Lap trinh phay bang Creo

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B GIO DC V O TO

Trng i H T C

oa o To Ch Lng Cao

-----------------

N MN HC CAD/ CAM/ CNC

Ti: TM HIU CNG NGH LP TRNH GIA CNG

VI CREO PARAMETRIC 2.0

SVTH: NGUYN NGC T MSSV: 09112140

NGUYN HONG TR MSSV: 09112240

GVHD: NGUYN VN SN

TP. H CH MINH, thng 9 nm 2012

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NI DUNG BO CO

Phn 1: GII THIU PHN MM CREO PARAMETRIC 2.0 ............................................ 4

1. Hng sn xut, phm vi ng dng v cc module .................................................. 4

a. Thit k sn phm ................................................................................................... 4

b. Thit k khun......................................................................................................... 5

c. Lp trnh gia cng CNC ......................................................................................... 5

d. M phng ng, tnh ton ng sut ....................................................................... 6

e. Thit lp v xut bng v 2D .................................................................................. 7

2. Nhim v ca n ................................................................................................... 7

3. Li c n .................................................................................................................. 7

Phn 2: NI DUNG N ................................................................................................... 8

1. Cc khi nim ............................................................................................................. 8

a. Qu trnh gia cng (Machining Process) ............................................................... 8

b. Nguyn cng (Operation) ....................................................................................... 8

c. Bc (NC sequence) ............................................................................................... 8

d. ng chuyn dao (Tool Path) .............................................................................. 8

e. M hnh thit k (Design model) ............................................................................ 8

f. M hnh gia cng (Manufacturing Model) ............................................................. 8

2. To m hnh gia cng ................................................................................................. 8

a. a chi tit vo mi trng gia cng: ................................................................... 9

b. To phi ................................................................................................................ 12

3. Thit l p nguyn cng .............................................................................................. 14

a. To chun gia cng .............................................................................................. 14

b. To my gia cng (Work Center) ......................................................................... 18

c. To nguyn cng (Operation) .............................................................................. 20

4. Gii thiu Mill Window, Mill Volume v Mill Surface ........................................ 21

a. Mill window .......................................................................................................... 21

b. Mill Volume .......................................................................................................... 24

c. Mill surface ........................................................................................................... 28

5. Cc lnh gia cng trn my phay CNC .................................................................. 31

a. Face Milling ......................................................................................................... 31

b. Chu trnh Volume Rough v Local Milling: ......................................................... 42

b.1. Volume Rough .................................................................................................... 42

b.2. Local Milling ...................................................................................................... 49

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c. Rough, Rerough, Finishing Milling ...................................................................... 64

c.1. Chu trnh Roughing ............................................................................................. 64

c.2. Chu trnh ReRough ............................................................................................. 69

c.3. Chu trnh Finishing ............................................................................................. 70

d. Profile milling ....................................................................................................... 81

f. Surface Milling v Cut Line Milling................................................................... 100

f.1. Surface Milling .................................................................................................. 100

f.2. Cut line milling .................................................................................................. 109

g. Trajectory Milling .............................................................................................. 128

g.1. Trajectory Milling 2 Axis ................................................................................. 129

g.2. Trajectory Milling 3 Axis ................................................................................. 133

h. Drilling (Standard) ............................................................................................. 136

i. Engraving ........................................................................................................... 142

6. Xut file gia cng trong Creo ................................................................................ 145

DANH MC HNH NH

Hnh 1: Thit k m hinh 3D trong Creo ................................................................................. 4

Hnh 2: Tch khun trong Creo ............................................................................................... 5

Hnh 3: M phng ng chy dao trong Creo ....................................................................... 5

Hnh 4: M phng ng trong Creo ......................................................................................... 6

Hnh 5: Phn tch lc trn 1 chi tit trong Creo ....................................................................... 6

Hnh 6: Xut bng v 2D trong Creo ....................................................................................... 7

Hnh 7: Giao din module gia cng ca Creo 2.0 .................................................................. 10

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Phn 1: GII THIU PHN MM CREO PARAMETRIC 2.0 1. Hng sn xut, phm vi ng dng v cc module

Creo 2.0 l phn mm ca hng Prametric Technology Corp. c nng cp ln t

phin bn Pro/E vi giao din c thay i gn nh hon ton ngi dng c th thao

tc d dng hn.

y l phn mm thit k theo tham s, c nhiu tnh nng mnh trong lnh vc

CAD/CAM/CAE. Ch vi Creo 2.0 ngi dng c th thit k, to khun, lp trnh gia cng

CNC v lp m hnh m phng c tt c cc chi tit hay vt th.

Mt s module ni bt ca Creo 2.0:

a. Thit k sn phm

Hnh 1: Thit k m hinh 3D trong Creo

Ngi dng c th thit k c tt c cc sn phm t n gin bng cc cng c:

Extrude, Revolve, Sweep n phc tp bng cc lnh: Blend, Warp, Section Sweep,

Sweep Blend,Hn na, Creo 2.0 cn h tr thit k sn phm theo tham s to

m hnh cc chi tit my tiu chun mt cch nhanh chng. Ngoi ra cng nh cc

phn mm 3D khc, Creo 2.0 cho php chnh sa li thng s thit k trong tng

bc v cp nht t ng cho cc bc tip theo.

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b. Thit k khun

Hnh 2: Tch khun trong Creo

Creo 2.0 m phng cc qu trnh lp khun v tch khun to sn phm. Sau khi thit

k xong chi tit mu, Creo 2.0 cho php chng ta tnh ton co rt ca vt liu, t

ng thit k hnh dng lng khun cho chi tit mu v m phng qu trnh tch

khun vi chc nng Mold Cavity.

c. Lp trnh gia cng CNC

Hnh 3: M phng ng chy dao trong Creo

Vi s h tr ca phn mm Creo 2.0, vic lp trnh gia cng CNC tht s linh hot

hn v d dng hn, ngi dng c th la chn nhiu kiu Phay khc nhau gia

cng ra chi tit: Profile, Pocketing, Face, Roughing, Reroughing, Finishing v khc

ch bng Engraving. Ngi dng cng c th Tin mt ngoi, mt u, tin l, rnh,

ren,trn cc b mt trn xoay mt cch d dng.

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d. M phng ng, tnh ton ng sut

Hnh 4: M phng ng trong Creo

Vi chc nng m phng ng, Creo 2.0 gip ngi dng lp rp cc chi tit thnh 1

sn phm hon chnh, sau to cc khp ni gia cc chi tit gip cho m hnh c

th chuyn ng. Ngoi ra, Creo 2.0 cn c kh nng kim nghim ng sut, chuyn

v, bin dng tuyn tnh v phi tuyn, xc nh v d on kh nng ph hy vt liu.

Hnh 5: Phn tch lc trn 1 chi tit trong Creo

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e. Thit lp v xut bng v 2D

Hnh 6: Xut bng v 2D trong Creo

Cng nh cc phn mm v khc, Creo cung cp module to cc hnh chiu ng,

bng hay cnh, t m hnh 3D ca chi tit. Ngoi ra phn mm cn cung cp cc

k hiu c sn nh nhm, cc k hiu dung sai hnh hc v v tr, iu khng

nhng gp phn lm bn v tr nn p hn, sng sa hn m cn gii phng sc lao

ng con ngi.

2. Nhim v ca n

Tm hiu cc lnh gia cng trong Creo cho my CNC 3 trc.

Ti u ha ng chy dao trong tng lnh ca Creo.

Gii thiu l thuyt mi quan h gia cng ngh ch to v cc thng s gia cng.

3. Li c n

n tm hiu cng ngh lp trnh gia cng trong Creo Parametric 2.0 c bt u

thc hin t ngy 25/ 9/ 2012. Tnh n thi im hon thnh n ny gn c

hai thng, trong sut khong thi gian , di s h tr tn tnh ca ging vin

hng dn Nguyn Vn Sn, chng em hc c rt nhiu iu, t cch trnh by

mt bi bo co n kin thc chuyn mn v k nng lm vic nhm. Mt ln na

xin cm n thy v nhng ch dy qu bu .

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Phn 2: NI DUNG N 1. Cc khi nim

a. Qu trnh gia cng (Machining Process)

L qu trnh trc tip bin i phi (Workpiece) thnh chi tit my (Part). Trong

ti liu ny qu trnh gia cng l qu trnh ct gt.

b. Nguyn cng (Operation)

L mt phn c bn ca qu trnh gia cng. Nguyn cng c thc hin trn mt

my (Work center) v mt phi .

c. Bc (NC sequence)

Mt phn ca nguyn cng, thc hin ct gt trn mt b mt hay mt t hp cc

b mt vi mt dao v mt ch ct nht nh.

d. ng chuyn dao (Tool Path)

L ng hnh hc m t qu o ca dao trn m hnh gia cng. Nh ng

chuyn dao, c th kim tra bng hnh hc qu trnh ct. cng l c s hnh

thnh CL Data File.

e. M hnh thit k (Design model)

L chi tit thit k, sn phm nhn c sau gia cng. Cc Feature, mt cnh ca

m hnh thit k c chn sinh ra ng chy dao. Gia Design model v

phi c mt lin kt. Cc thay i t chi tit c th cp nht vo nguyn cng.

File Part, Assembly hay Sheermetal Part u c th lm Design model phc vu

ch gia cng.

f. M hnh gia cng (Manufacturing Model)

M hnh gia cng gm chi tit (cn c gi l Reference Part) v mt phi lp

ghp vi nhau. M hnh gia cng cho php th hin lng d gia cng v m

phng gia cng. Thng th sau khi gia cng phi s trng kht vi chi tit.

2. To m hnh gia cng

Nhng iu cn l rc khi l p trnh gia cng:

M hnh chi tit v g phi c t trong cng 1 th mc.

Thc hin Set Working Directory cho th mc ni trn, m bo

file gia cng cng c lu vo y, tun th iu ny, vic sp xp cc

file trong my vi tnh s c h thng, thun tin cho vic tm kim li sau

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ny, c bit l khi chp t my tnh ny sang my tnh khc, n gin l

ngi dng ch cn chp c th mc .

a. a chi tit vo mi trng gia cng:

Bc 1: Click chut ti biu tng New

Bc 2: Thc hin thao tc theo cc s th t hnh bn

Xc lp chc nng cn s dng l gia cng

t tn cho chng trnh gia cng

B chn ny, chn li h thng n v cho phn mm

Bc 3: i vi tiu chun Vit Nam, click chut vo: mmns_mfg_nc

Hon thnh bc ny, giao din chng trnh gia cng hin ra nh hnh di y:

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Hnh 7: Giao din module gia cng ca Creo 2.0

Bc 4:

Click chut ti biu tng Reference Model, khi c 3 s la chn nh hnh v

di y

D la chn bt k la chn no th vic cn lm l phi tr ng dn n chi tit

cn gia cng, v v lc bt u Set Working Directory, nn th mc cha chi tit

s hin ra d click chut bt c la chn no.

Tip theo l ngha ca tng la chn trn:

Assemble Reference model:

Chi tit a vo mi trng gia cng, v bt k chnh sa no mi

trng gia cng hay thit k u c cp nht ln bn v gc. Khi lu th

khng pht sinh tn file mi.

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Ti model tree, click chn biu tng ca m hnh gia cng.

Sau biu tng ny chnh l cc lnh dng thit k ra chi tit.

Inherited Reference model:

Chi tit c sao chp vo mi trng gia cng, cc lnh thit k ca chi tit gc c lit k 1 nhm ring nh hnh bn cnh.

Vi tnh nng ny c th thay i c cc lnh to hnh ca chi tit gc

mi trng ny. Tuy nhin, nhng cp nht ny s khng n ng n chi

tit gc. Nhng cc cp nht ca chi tit gc cng s c t ng cp nht ti

chi tit gia cng.

Merge reference model:

Chi tit c sao chp vo mi trng gia cng, khng th sa c cc lnh thit k trong bn v gc, nu mun chnh sa th phi lm trn file gc. C th thy iu c th hin di y, ti th External Merge id 1788, khng h c bt k 1 lnh thit k m hnh no hin ra.

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Tuy nhin, nhng cp nht ca chi tit trong mi trng thit k s c cp

nht trong mi trng gia cng.

b. To phi

Click chut ti biu tng Workpiece nh hnh v. Khi cc chc nng hin ra nh sau.

Sau y l phn i vo ngha ca tng lnh:

Automatic Workpiece (To phi t ng):

Vi tnh nng ny, Creo t ng nhn dng chi tit v to ra phi c hnh dng tng thch vi chi tit

iu chnh kch thc:

Cch 1:

Click vo biu tng hnh vung mu trng v ko th chut

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Cch 2:

Click trc tip vo cc kch thc n khi hin ln hp thoi nhp s.

Creo cn cho php chn loi phi gia cng (gm phi tr v phi hnh

hp), bng cc la chn di y:

Tip theo l tnh nng Envelope

Tnh nng ny tt i cc kch thc thng (gm c chiu di, chiu rng v chiu cao) v ch li cc kch thc gc (cho php xoay phi theo cc trc ta mt gc ty ).

phn iu chnh kch thc, tng t nh trn cng c hai cch.

Create Workpiece (to phi bng cch dng hnh):

Click chut vo biu tng hnh bn cnh

Lc ny Creo yu cu t tn cho phi sp c to

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Tip theo chng trnh gi n bng danh sch v cch xy dng phi i vi hu ht cc loi phi, trnh t thc hin c th hin nh hnh bn tri S 1 ngha l: M hnh phi to ra l mt khi c S 2 ngha l: Phng php to phi l Protrusion, tng t nh xy dng cc m hnh bng lnh Extrude S 3 ngha l: Click Done/ return n cc la chn k tip

Tip theo Creo cung cp cc lnh to phi t tit din phng. Ty thuc vo hnh dng m hnh gia cng m c s la chn khc nhau. Sau khi la chn hy nhn Done. Sau , Creo a chng trnh v mi trng thit k, mi thao tc cc bc tip theo xin tham kho ti liu v thit k .

Ti y, vic to phi hon tt

L :

Khi bm save chng trnh, c 2 file c lu l file gia cng .asm v file phi va

mi thit k .prt (c 2 file ny u c lu trong th mc Set working directory

lc u.

3. Thit l p nguyn cng

a. To chun gia cng

i vi lp trnh trn my CNC, chun gia cng rt quan trng, v y l c s

xc nh ta cc im trn phi, ng thi l c s to ra cc lnh gia cng.

Chun trn phn mm phi trng vi chun c thit lp trn my CNC, nu khng

cc bc lp trnh sau s thnh v ngha.

i vi phay, chun gia cng c th nm gc phi, hoc nm ngay tm ca phi,

vic ty thuc vo cng ngh ch to.

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to chun gia cng trong Creo, click vo biu tng hnh bn cnh

Sau y l trnh by chi tit cch s dng Coordinate System:

To chun ti gc ca chi tit:

Cch 1:

Chn 1 mt phng. Ko th 2 vung mu xanh vo 2 cnh bt k trn phi hay chi tit, thm ch c th th vo cc Datum plane.

Sau khi ko th xong, vic tip theo l xc lp cc kch thc, cng vic ny hon ton tng t phn to phi gia cng. Ngoi ra y, Creo cn cho php chnh sa cc kch thc trong hp thoi Coordinate System.

Cch 2:

Tng t cch 1, click chn mt phng v ko th 2 mu xanh, nhng y khng cn nh p trc ti k c. Ti hp thoi Coordinate system, click chn Align, iu ngha l 1 trc trong h trc ta thuc v cnh c chn. Nu chn Align cho c 2 cnh ca phi, khi 2 trc ta ca h ta trng vi 2 cnh ca phi, v v vy gc ta trng vi giao im 2 cnh ca phi.

Cch 3:

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Trn c s chun lp trnh tin hnh suy lun ngc li im ny l giao im ca nhng cnh no. Click vo nt Coordinate system v chn 2 cnh xc nh trn (khi chn cnh th hai nh nhn gi phm Ctrl).

Tuy nhin, trong hu ht trng hp, h ta mc nh ca phn mm khng tha mn ng nhu cu, do cn tin hnh iu chnh. V d nh hnh bn cnh, cn o chiu trc Ox.

iu chnh, click chn th Orientation, cc lnh trong th Orientation hin ra nh hnh di y. Trong : Use: l cnh c chn xc nh chun lp trnh. To determine: l cnh c chn s trng vi trc no trong h trc ta Oxyz.

Filp: dng i chiu dng ca trc ta . Thc hin cc ty chnh ny n khi thayu cu th nhn nt OK

To chun ti tm chi tit:

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Vic to chun ti tm thng thng p dng khi chi tit c tnh i xng. Do , u tin cn to 2 mt phng, l 2 mt phng i xng ca chi tit .

Ln lt click chut vo 2 mt phng i xng ny (khng quan trng th t),

phn mm s t to chun lp trnh trn c s l giao ca 2 mt phng ny.

(Click chut vo 2 mt phng theo cch th nht)

(Kt qu ca cch click th nht)

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(Click chut vo 2 mt phng theo cch th hai)

(Kt qu ca cch click th hai)

Hy so snh hai kt qu hai cch trn vi nhau

b. To my gia cng (Work Center)

y l th xc nh loi my gia cng chi tit.

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V d: nu chn my gia cng l my phay Mill.

Khi 1 hp thoi hin ra nh hnh bn cnh.

Sau , hy chuyn i qua li gia cc th lnh ca Milling Work Center

Hp thoi ny cha cc thng s ca my gia cng trong thc t nh:

Number of axes Xc nh s trc ca my CNC

Horsepower Cng sut my

Maximum speed (RPM) Tc ti a ca trc chnh (vng/ pht)

Travel Hnh trnh di chuyn theo cc trc Ox v Oy ca bn my

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Khi s dng cc lnh gia cng trong phn mm, nu nhp mt thng s no vt

qu gi tr, nh tc trc chnh chng hn th chng trnh s gi li cnh bo. chnh

l ngha ca cc thng s ny

c. To nguyn cng (Operation)

Click chut vo th Operation nh hnh

Giao din ca th ny xut hin nh hnh bn cnh

to c mt nguyn cng, c hai iu kin tin quyt l:

My gia cng ( hng dn trn)

Chun gia cng ( hng dn trn)

Nu khng thit lp mt trong hai yu t trn, Creo s khng cho php thit lp

nguyn cng

Ngoi ta trong th Operation cn c mt tnh nng rt quan trng l mt li dao

(Retract)

Mt li dao l mt m khi :

Kt thc 1 nguyn cng, dao nhc ln v mi dao s nm ngang mt li

dao

Khi bt u gia cng, dao chy t trn xung vi tc G0, nhng khi

mi dao nm ngang mt li dao, ng c gim tc v dao di chuyn chm

li

Mt li dao c nhiu hnh dng khc nhau, c th l mt phng (plane),

mt cong (surface), mt tr (cylinder), mt cu (sphere)

Trong gia cng phay CNC, mt phng l loi mt li dao thng dng nht

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thit lp mt li dao, cn thc hin cc bc sau:

Bc 1: click chn hnh dng mt li dao Bc 2: click chn mt tham chiu (i vi phay thng l mt trn cng ca phi) xc nh mt li dao Bc 3: nhp gi tr khong cch tng i gia mt tham chiu v mt li dao Bc 4: nhp dung sai cho khong cch tng i trn

(Mt trn cng ca phi c chn l mt chiu cho mt phng li dao)

Ti y, vic thit lp 1 nguyn cng hon tt

4. Gii thiu Mill Window, Mill Volume v Mill Surface

C th hiu mt cch n gin Mill Window, Mill Volume v Mill Surface l khng

gian gii hn vng gia cng, cc th lnh ny khng ng n c mt mnh m lun

c phi hp cng vi mt lnh no nh Phay mt phng (Face milling) hay Gia

cng ph th (Volume rough). Sau y l phn gii thiu chi tit

a. Mill window

Click chut vo biu tng hnh bn cnh.

Giao din ca Mill window hin ra nh hnh bn cnh

Tip sau y xin gii thiu chi tit hn.

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Th lnh Silhouette type (tnh nng mc nh ca Creo)

Nhp chn vo mt phng trn b mt phi hay chi tit gia cng (ty theo ngi dng). Lc ny b mt s chuyn mu.

V ng thi ti th Placement, tn ca mt phng c chn hin ln trong Window Plane

Tuy nhin nu b chn Keep Inside Loops, Mill window tr thnh hnh bn cnh

Vic g b ng bin ca cc l c mt ngha quan trng, v n quyt nh

ng chy dao trong gia cng.

Di y l minh ha v s khc nhau trong lnh Face milling.

(Khng chn Keep inside loops)

(C chn Keep inside loops)

V y l kt qu m phng qu trnh gia cng

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(Khng chn Keep inside loops)

(C chn Keep inside loops)

Th lnh Sketch window type

Vi tnh nng ny, Creo cho php t thit k vng gia cng.

Cc bc thc hin nh sau: Bc 1: Click nt Sketch window type. Bc 2: Chn mt phng m cn xy dng Mill window. Bc 3: Kt thc cc th tc v bt u i vo mi trng v.

Ngoi ra Mill window cn c vi tnh nng khc:

Click chut vo th Option v quan st cc tnh nng di dng Machine With Tool.

Trong :

Inside window contour: dng c ct ch chuyn ng bn trong vng gia cng chn

On window contour: bin

gii ti a cho dng c ct l nhng ch m ng tm dao trng vi bin dng chi tit gia cng

Outside window contour:

dng c ct di chuyn hon ton t do, c th ra ngoi c vng gia cng

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Click chut vo Th Depth: Nu click chn ti Specify the depth, Creo cho php ch nh su gia cng cho cc lnh gia cng (v d lnh Volume Rough)

Cn nu khng Click chn, Creo s t quyt nh su gia cng ty thuc tng lnh (V d i vi lnh Volume Rough, Creo s gia cng n su nht c th t c ty thuc vo kch thc dng c ct v ch c chn trong th Options)

b. Mill Volume

Cng ging nh Mill window, Mill volume dng gii hn khng gian gia

cng. Trong nhiu trng hp, vic dng Mill Volume tr nn thun tin hn

nhiu so vi mill window.

V d to mill volume cho phn vng di y

u tin, Click biu tng Mill volume

Giao din ca Mill volume xut hin

Click chut vo biu tng lnh Extrude (Bn cnh vn c th to ra bng lnh Revolve).

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Ging nh trong phn thit k, Creo yu cu la chn mt phng v phc. Click chn vo b mt hnh bn cnh.

S dng lnh Project dng bin dng 2D nh hnh di y:

Kt thc lnh bng cch click chut gia. Chn lnh Extrude to Surface. Chn b mt cn Extrude n.

n y, 1 khi hp ch nht c to ra, tuy nhin y cha phi l vng gia

cng v 1 vi phn ca khi hp ny vn cn nm trong chi tit.

x l ccphn , Click chut vo lnh Trim.

V chn m hnh gia cng, vic to Mill volume n y l hon tt

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nhn r hn kt qu, click chut vo biu tng Shade.

(Mill Volume cn to)

Creo cn cho php chnh sa vng khng gian gia cng.

lm iu , ti model tree, click chut phi vo phn lnh Mill volume.

Click chn Redefine Mill Volume.

(S dng lnh Round bo cnh)

Sau , s dng cc lnh Round v Edge Chamfer iu chnh.

Mt tnh nng khc phi nhc n trong Mill volume l kh nng Offset cc b

mt.

minh ha cho lnh ny hy thc hin v d di y.

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(M hnh chi tit cn gia cng)

(Mill Volume c to ra cha c p dng lnh Offset)

Nu gi nguyn vng khng gian gia cng l trn, khi dng c ct i xung,

dng c c th n trc tip vo phi, v vy tt nht nn m rng vng gia cng,

y Creo cung cp cng c lm vic l lnh Offset

Xt trng hp cn m rng b mt A hnh bn cnh

Click chut vo m hnh gia cng (Lc ny ton b vng khng gian gia cng i mu)

Click chut vo b mt A (Lc ny ch c b mt A l i mu, cc b mt khc tr li mu trc )

Click chut ti nt lnh Offset

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Nhp gi tr Offset vo c nh du Sau , Click chut gia v kt thc lnh

Vic to Mill Volume c Offset b mt n y l hon thnh

c. Mill surface

Nhn t kha cnh no , vic to Mill surface cng ging nh to 1 surface trong

mi trng thit k ca Creo. d hiu hy to mt mill surface c th nh di y

(Chi tit ban u)

(Mill surface cn to)

Click chut ti biu tng Mill surface

Khi , giao din ca Mill surface hin ra

Tip theo:

Click chut vo m hnh chi tit (khi m hnh chi tit s i mu).

Chn cc b mt trn (khi chuyn t b mt ny sang b mt khc

nh nhn gi phm Ctrl).

Sau khi chn xong ht cc b mt, thc hin ln lt:

Nhn t hp phm Ctrl + C.

Nhn t hp phm Ctrl + V.

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1 giao din mi hin ra v

ch cn click chn nt

Finish .

Ti y, Creo to ra surface nh yu cu trn.

Khng dng li , phn mm cn cho php thay i bin dng ca Mill surface nh hnh bn: l mt Mill Surface c mt phn b bc i.

thc hin vic trn, cn tri qua cc bc nh sau:

Click chut phi vo biu tng Mill surface ti Model Tree v chn Redefine Mill surface.

Nhp chn biu tng Extrude.

V chn mt phng v phc l b mt trn cng ca chi tit. K , dng 1 hnh bt k v kt thc lnh bng chut gia.

Chn ch Extrude l ct .

Quan st Mill Window v iu chnh hng mi tn cho ph hp (nu cn). Sau , click chut vo biu tng Shade quan st r hn hnh dng Mill Window.

Page | 30

Khi Mill Window ph hp, click chut gia kt thc lnh.

n y phn gii thiu cc cng c h tr cho cc lnh gia cng trong Creo kt

thc, k t phn ny ti liu cp n tng lnh c th. Tuy nhin v gia cc lnh

u c nhng thng s cng ngh chung nn cc thng s ny c trnh by trc

ht, iu ny mang li hai ngha to ln.

em li ci nhn ton cnh.

Trnh c s lp i li li gy nhm chn.

Di y l cc thng s ny:

SPINDLE_SPEED Tc quay ca trc chnh.

CUT_FEED Trong m phng l tc di chuyn ca dao theo phng X v Y. Nhng trong thc th th l tc di chuyn ca bn my theo phng X v Y (cc phng X, Y, Z cp n trong bi vit ny l phng ca h ta c chn lm chun gia cng c to bc thit lp nguyn cng).

STEP_OVER Bc dch chuyn dao ngang. L khong cch gia 2 ng chy dao lin tip theo phng X hoc Y

STEP_DEPTH Chiu su ca mt lt ct (theo phng Z).

CLEAR_DIST Khong li dao

RETRACT

PLANE

Mt phng an ton ca khi gia cng.

Phn bit gia CLEAR DISTANCE v RETRACT PLANE:

Trong mt chu trnh gia cng s gm nhiu lt ct, khi hon thnh mt lt ct th dao

s phi li v mt mt phng Retract tin hnh di chuyn dao n v tr bt u

cho lt ct tip theo. dao di chuyn n mt phng Retract th dao phi i qua mt

mt phng song song vi n l mt phng CLEAR_DIST. Trong qu trnh li dao

n mt CLEAR_DIST, dao s di chuyn theo lnh G1. Ri t mt CLEAR_DIST

n mt Retract dao s duy chuyn theo lnh G0 tit kim thi gian chy dao.

(Hnh minh ha s khc nhau gia Retract Plane v Clear Distance)

Page | 31

xc nh mt phng CLEAR_DIST ny, cn nhp vo mt gi tr (mm). Gi tr

nhp vo ny chnh l khong cch t v tr lm vic ca dao n mt phng

CLEAR_DIST theo chiu Z. Trong mt chu trnh gia cng, v tr lm vic ca dao s

thay i theo tng lt ct, nn mt phng Clear_dist cng s thay i theo, cn mt

Retract lun l mt c nh trong sut qu trnh gia cng.

5. Cc lnh gia cng trn my phay CNC

a. Face Milling

hiu r chu trnh ny hy thc hin cc v d sau:

V d 1:

Bc 1: a chi tit vo mi trng gia cng, bao gm cc cng vic sau.

Khi ng creo parametric 2.0 Thc hin Set Working Directory

n th mc FACE, click New. hp thoi New chn

Manufacturing.

Ti Name t tn FACE_VIDU_1. B chn du stick ti Use default

template, click OK.

Chn h n v mmns_mfg_nc, OK. Click Assemble Reference model

a chi tit vo mi trng gia cng. Chn chi tit tn FACE.prt, OK. Chn kiu lp Default, click chut

gia hon tt. Bc 2: To phi.

Chn Automatic Workpiece to phi t ng.

To phi c lng d gia cng mt trn l 5mm.

Click chut gia kt thc lnh. To chun gia cng trng vi tm

mt phng phi.

.

(B mt trn c lng d gia cng l 5mm)

(Chun gia cng trng vi tm mt phng

phi)

Bc 3: Chn my phay gia cng. Click Work Center, chn Mill. Chn my phay ba trc. Click chut gia kt thc lnh.

Page | 32

Bc 4: Thit lp Operation. Click Operation, chn chun gia cng l h trc ta to trn.

th Clearance: Chn Plane ti Type. Reference: chn vo mt phng

trn cng ca phi. Value: nhp 15

Click chut gia kt thc. Bc 5: trang Mill click chn Face.

Bc 6: Chn loi dao phay mt u chi tit.

(Ti No tool Click chn Edit Tools).

.

Lc ny, xut hin hp thoi Tools setup chn dao thch hp v ci t cc thng

s cho dao.

Ti trang General:

t tn dao Name: End_mill_40

Chn loi dao dng cho chu trnh phay ti Type: chu trnh ny ta

phay mt phng u nn cn dng dao End mill.

Thit lp ng knh dao: Nhp vo gi tr ng knh dao phay cn

dng, nn nhp vo gi tr ng knh ca dao phay c sn trn

my. y nhp gi tr l 40.

Ti trang Settings:

Page | 33

Tool Number: Nhp s th t dao phay c gn trn my phay CNC. V d ny nhp l 1.

Click Apply v OK kt thc qu trnh ci t dao.

Bc 7: Ti trang Reference: Chn mt phng cn gia cng

Type: C 2 la chn Surface hoc Mill Window.

Mill Window: Khai bo mt phng cn gia cng thng qua Mill Window.

Khuyn khch ngi dng nn s dng Mill Window (s trnh by v d

2). Cc bc ty chn vi Mill Window gm:

Bc 1: Type chn kiu Mill Window.

Bc 2: Click chn Mill Window to trc.

Surface: Khai bo mt phng cn gia cng. Ch s dng trng hp ny

khi chi tit khng c lng d gia cng thnh bn hoc lng d gia cng

thnh bn nh. Cc bc thc hin ty chn vi Surface:

Bc 1: Type chn kiu Surface.

Bc 2: Click vo Machining Reference

Bc 3: Click chn vo mt u ca chi tit (mt cn gia cng).

Trong v d ny do cha to Mill Window nn chn Surface ri chn vo mt phng

trn chi tit gia cng.

(Minh ha bc 1 v 2)

(Minh ha bc 3)

Page | 34

Bc 6: Ti trang Parameter: Thit lp ch ct Click vo Edit machining Parameter hin ra bng thit lp y .

Click all hin th tt c cc thng s.

Nhp vo cc gi tr:

CUT_FEED 1000

STEP_DEPTH 2

STEP_OVER 30

CLEAR_DIST 5

SPINDLE_SPEED 2500

Bc 7: Xem ng chy dao:

Click vo Display . Xut hin hp thoi PLAY PATH .

Click Play xem ng chy dao.

Page | 35

Nh n xt v hiu chnh li mt vi thng s:

Hiu chnh chin lc chy dao

v d ny, dao ct b qua phn hc gia chi tit, nhng trong trng

hp ny ta mun dao phay ht c mt phng ca phi. lm c iu ny

cn hiu chnh thng s SCAN_TYPE bng Parameter.

Gii thiu v SCAN_TYPE:

SCAN_TYPE: Chin lc chy dao (l cch di chuyn dao trong vng gia cng)

TYPE_1: Khng b qua hc.

TYPE_3: B qua phn hc.

TYPE_SPIRAL: Chy theo ng

xon c (dao chy t ngoi vo

trong)

TYPE_ONE_DIR: Chy theo 1

chiu.

y chn TYPE_1 ct ht mt phng trn chi tit. Xem ng chy dao:

Page | 36

Hiu chnh s ln ct

Ta thy rng gia cng xong mt phng dao thc hin 3 ln ct. Do lc to

phi c lng d gia cng l 5mm m STEP_DEPTH nhp bng 2mm.

Trong trng hp ny dao ct 2 ln u, mi ln xung 2mm. ln ct cui

dao s ct n mt phng chi tit, lc ny dao ch ct 1mm. Nu mun tng s

ln ct th cn xc lp thng s NUMBER_CUTS (S ln ct theo phng Z)

bng Parameter.

Chiu su mt lt ct (csmlc) s bng lng d gia cng chia cho gi tr nhp NUMBER_CUTS.

V c cc trng hp xy ra sau y:

Trng hp csmlc nh hn gi tr STEP_DEPTH:Dao ct theo NUMBER_CUTS.

Trng hp csmlc ln hn STEP_DETH: Dao ct theo STEP_DEPTH.

mt nh NUMBER_CUTS l khng:S ln ct c tnh theo STEP_DEPTH

Trong v d ny nhp NUMBER_CUTS l 5 th dao s ct 5 ln, mi ln

1mm. nu nhp vo NUMBER_CUTS mt gi tr nh hn 3 th dao cng s

ct 3 ln theo STEP_DETH.

To lng d gia ng

Page | 37

thit lp lng d gia cng, nhp gi tr lng d (mm) vo BOTTOM_STOCK_ALLOW.

Gi tr mt nh l 0 ngha l khng c lng d gia cng.

Hiu chnh v tr ln dao v xung dao

Quan st li ng chy dao v c cc nhn xt di y:

Trong mi ln xung dao v ln dao tin hnh ct, ng tm dao trng vi

cnh chi tit theo phng X v dao th tip tuyn vi cnh chi tit theo

phng Y. Nh vy, trong lc xung dao th mt phn ca dao s m thng

vo phi c th gy hi cho dao. l trng hp ta chn kiu Type l

Surface v click mt phng trn cng ca chi tit.

Nu trong trng hp trang Reference ta chn kiu Type l Mill window

(vi mt Mill window trng vi mt phi) th ng tm dao trng vi cnh

phi theo phng X v dao th tip tuyn vi cnh phi theo phng Y. Nh

vy, trong lc xung dao th dao s va chm vo thnh ca phi c th gy hi

cho dao.

iu chnh v tr xung dao v ln dao hp l, khc phc nhc im trn

ta cn thit lp mt s thng s sau:

INTIAL_EDGE_OFFSET (khong cch t ng tm dao n cnh bn theo phng Y)

Page | 38

APPROACH_DISTANCE (khong cch t ng knh dao n cnh bn theo phng X)

FINAL_EDGE_OFFSET

EXIT_DISTANCE

Gi tr ca cc thng s:

Trng hp trang Reference chn kiu Type l Surface v click mt

phng trn cng ca chi tit th qu trnh tnh ton nhp 4 thng s trn s

gp kh khn khi chi tit c lng d gia cng thnh bn ln. Trong v d ny

do lng d gia cng thnh bn ca chi tit nh nn nhp cc gi tr:

INTIAL_EDGE_OFFSET 0

FINAL_EDGE_OFFSET 0

OPPROACH_DISTANCE 9

EXIT_DISTANCE 9

Click xem ng chy dao: Lc ny, v tr xung dao v ln dao c di ra mt khong. Trnh c trng hp dao i xung m vo phi.

Bo cung nhng v r dao i ng

Page | 39

Hnh trn thy c nhng v tr dao i phng, dao chy theo gc vung

nn qu trnh dao i phng xy ra t ngt. iu ny d gy ra rung ng

trn my CNC v gy hi cho ng c my. Ti v tr dao i phng nh vy

s c mt khong thi gian ngn dao dng li. Lc ny dao khng tham gia

ct nhng vn cn tip xc vi phi to ra ma st gy nng dao v phi.

khc phc tnh trng ny cn hiu chnh li thng s LACE_OPTION.

LACE_OPTION: Bo cung ti v tr dao i phng. Gi tr mc nh l NO. v d ny, cn chn ch ARC_CONNECT.

Lc ny ti nhng v tr dao i phng c bo cung nh hnh bn

Hiu chnh gc chy dao

C th thay i gc chy dao bng thng s CUT_ANGLE bng paremeter.

CUT_ANGLE: Gc nghing ca ng chy dao so vi phng X. Nhp:

CUT_ANGLE 30

Page | 40

Kt qu ng chy dao

Trong v d ny nn mt nh:

CUT_ANGLE 0

Sau khi hiu chnh xong cc thng s. Click vo biu tng kt thc

chu trnh FACE.

lu li, vo File chn save.

V d 2:

T Bc 1 n bc 4 thc hin hon ton tng t nh v d 1 nhng chi tit

c t tn l: FACE_VIDU_2.

Tip theo click vo biu tng mill window

Click vo mt phng trn cng ca phi

Ti trang Option: Stick vo Outside window contour (dao c th chy ra ngoi vng mill window).

Done chut gia kt thc qu trnh to mill window.

Tip theo: trang Mill click chn Face.

Page | 41

Chn dao phay l End_mill_40 ging nh v d 1.

Ti trang Reference: Chn mt phng cn gia cng. Sau ln lt thc hin cc bc sau:

type: Chn mill window. Click vo Machining References. moldel tree click chn Mill

Window va to

Ti trang Parameter: Thit lp ch ct.

CUT_FEED 1000

STEP_DEPTH 2

STEP_OVER 30

CLEAR_DIST 5

SPINDLE_SPEED 2500

SCAN_TYPE TYPE_1

LACE_OPTION ARC_CONNECT

Trong v d ny s dng Mill Window nn thit lp v tr xung dao v ln dao nh

di:

INTIAL_EDGE_OFFSET 10 (nhp gi tr bng 0.25*ng knh dao)

FINAL_EDGE_OFFSET 10 (nhp gi tr bng 0.25*ng knh dao)

APPROACH_DISTANCE 3

EXIT_DISTANCE 3

Xem ng chy dao

Page | 42

lu li, chn file save (phi lu li tip tc thc hin chu trnh Volume Rough

v d tip theo).

Ngoi ra trong bng Parameter cn rt nhiu thng s hiu chnh khc, ngi dng

c th t tm hiu thm.

n y, phn gii thiu lnh Face Milling kt thc

b. Chu trnh Volume Rough v Local Milling:

Volume Rough: Thng dng phay th mt vng th tch.

Local milling: Dng gia cng li nhng vng m chu trnh Volume rough khng

gia cng c do ng knh dao qu ln.

b.1. Volume Rough

hiu r chu trnh ny cn thc hin v d sau:

V d 1:

Bc 1: M file gia cng lu V d 2 trong chu trnh FACE.

Khi ng creo. Chn File Open. Dn n th mc FACE, chn file tn FACE_VIDU_2. Click Open. Ta c:

Bc 2: trang mill click chn Volume Rough.

Page | 43

Bc 3: bng Menu Manager click chn vo cc Name, Tool, Parameter, Window.

Ri click Done.

Bc 4: t tn cho chu trnh l: PHAY_THO

Bc 5: Thit lp dao ct. Ti trang General: To dao END_MILL_20. Ti trang Settings: Nhp vo Tool Number: 2

Click Apply v OK kt thc qu trnh ci t dao.

Bc 6: Thit lp ch ct bng Parameter.

CUT_FEED 100

STEP_DEPTH 2

STEP_OVER 5

CLEAR_DIST 2

SPINDLE_SPEED 2500

PROF_TOCK_ALLOW 0.5 (lng d gia cng tinh thnh bn).

ROUGH_TOCK_ALLOW 0.5 (lng d bn tinh thnh bn).

BOTTOM_TOCK_ALLOW 0.5 (lng d gia cng mt y).

SCAN_TYPE TYPE_SPIRIAL

ROUGHOPTION ROUGH_ONLY

Xin gii thiu ngha ca cc thng s trn:

Page | 44

SCAN_TYPE: Kiu chy dao trong vng gia cng. Mt s kiu chy dao hay dng:

TYPE_1: Dao ct theo tng ng thng. Gp o th

nhc dao ln.

TYPE_2: Dao ct theo tng ng thng. Gp o th

chy vng qua.

TYPE_3: Dao ct theo tng vng. Dao ct ht vng ny

sang ct vng khc.

TYPE_SPIRAL: Dao ct theo ng xon c t trong

vo.

ROUGH_OPTION: Cc

phng thc gia cng. Mt s kiu thng dng:

ROUGH_ONLY: Ph th to bin dng cho chi tit.

Thng dng phay th.

PROF_ONLY: Dao ch ct to thnh bn. Thng

dng gia cng tinh thnh bn.

FACE_ONLY: Dao ch tham gia ct to cc b mt

song song vi mt phng XY. Thng dng gia cng

tinh mt phng y.

Click OK kt thc qu trnh thit lp ch ct.

Bc 7: Chn mill window Model Tree.

Bc 8: Xem ng chy dao.

Click vo Play Path.

Click vo Screen Play.

Page | 45

(Kt qu ng chy dao)

Trong trng hp ny c qu nhiu ng chy dao nn kh quan st c qu trnh

ct. xem m phng qu trnh ct chn Play Path ri chn NC Check. Ta c:

(M phng bng NC Check)


Cch xung dao trong mt vng gia cng kn.

thc hin mt lt ct, dao phi m thng xung phi mt lng bng vi

gi tr STEP_DEPTH. iu ny gy hi cho dao nn cn hiu chnh vi thng

s ci t qu trnh xung dao trong mt vng gia cng kn (vng hc

gia chi tit).

C 3 cch xung dao trong mt vng gia cng kn.

Page | 46

Plunge: Dao m thng xung phi theo phng Z. Phng dao c

xc nh bng cch ch ra mt trc (axis) dao i xung theo trc .

Cch ny ch c s dng khi ti trc c khoan trc mt l.

Nh vy dao s i xung theo l khoan ri mi tin hnh ct, trng

hp ny trnh c h hi cho dao.

Ramp: Xung dao theo gc nghing. Cn xc lp cc thng s bng

Parameters cho cch xung dao ny:

RAMP_ANGLE: Gc xung dao so vi phng Z. Gi tr mc

nh l 90 . Nh vy dao s m thng xung phi. iu ny

gy hi cho dao nn cn phi hiu chnh gi tr RAMP_ANGLE

cho ph hp.

S li ct ca dao end mill 2 3 4

Thp v gang 15 10 5

Nhm ng nha 30 20 10

Hp kim 4 3 2

(Bng tra RAMP_ANGLE)

RAMP_FEED: Tc ct khi xung dao. Thng nhp bng

0,5 ln gi tr CUT_FEED. Nu mc nh th gi tr

RAMP_FEED s t ng ly bng vi gi tr ca CUT_FEED.

Helical: Xung dao theo ng xon c. Cc thng s cn xc lp l

RAMP_ANGLE v RAMP_FEED th c nhp nh cch xung dao

Ramp. Ngoi ra cn phi xc lp thng s HELICAL_DIAMETER

(ng knh vng xon c).

v d ny chn cch xung dao l Helical.

hiu chnh li ch ct trong Parameter, nhp thm cc gi tr:

RAMP_FEED 500

RAMP_ANGLE 5

HELICAL_DIAMETER 30

Page | 47

Quan st li ng chy dao, thy mi ln dao xung s chy theo ng xon c.

Hiu chnh vng gia cng.

trc chu trnh Volume Rough c chu trnh Face Milling phay mt

u ca chi tit. Th nhng trong chu trnh Volume Rough ny dao vn chy

li phay mt u chi tit. Lc ny dao chy khng, nh vy s tn thi

gian. khc phc c tnh trng ny, cn hiu chnh li vng cn gia cng

ln lt theo th t sau.

Bc 1: Click vo Customize.

Bc 2: Hp thoi Customize click chn Automatic Cut. Bc 3: Click vo nt Delete

Bc 4: Xut hin hp thoi Confirm chn YES.

Bc 5: Chn Insert. Bc 6: Chn From-To-Depth:

Page | 48

Vng gia cng c gii hn bi 2 mt phng. Bc 7: Done

Bc 8: Click chn From Depth: Ch ra mt phng bt u. .

Bc 9: Click chn mt phng bt u l mt phng trn cng ca chi tit.

Bc 10: Click chn To Depth: Ch ra mt phng cui. Bc 11: Click chn mt phng bc bn ngoi chi tit. Bc 12: Click Done Cut.

hp thoi Customize click OK kt thc qu trnh hiu chnh vng gia cng.

Page | 49

Quan st ng chy dao, lc ny dao khng cn phay mt u ca chi tit na m

ch gia cng thnh bn v phn hc ca chi tit.

Chn Done Seq kt thc chu trnh Volume rough.

M phng NC_CHECK ca 2 chu trnh Face Milling v Volume Rough c:

Nhn xt: 2 rnh hai bn chi tit do c kch thc hp, nn dao ng knh 20

khng th ct c. Lc ny dng chu trnh Local Milling ct.

b.2. Local Milling

Tip tc v d trn

Page | 50

Bc 1: Vo trang Mill chn Local Milling chn Previous Step.

Bc 2: Xut hin hp thoi Menu Manager yu cu chn chu trnh trc cn gia cng li.

Bc 3: Click chn chu trnh Volume Rough vi tn PHAY_THO Model Tree.

Bc 4: Click chn CUT MIN #1 hp thoi Menu Manager.

Bc 5: Stick chn cc Name, Tool, Parameters ri click Done. Sau , t tn chu trnh l

Previous_Step

Page | 51

Bc 6: Dng c ct l: END_MILL_10 vi Tool Number l 3

Bc 7: Thit lp ch ct bng Parameters.

CUT_FEED 1000

STEP_DEPTH 2

STEPOVER 7.5

CLEAR_DIST 2

SPINDLE_SPEE 2500

PROF_TOCK_ALOW 0.2

BOTTOM_TOCK_ALLOW 0.2


trnh tnh trng phay li mt u. Click chn Customize hiu chnh li vng

gia cng (ging vi bc hiu chnh vng gia cng trong chu trnh Volume Rough

c hng dn trn).

Sau , Click Play Path xem ng chy dao

ng chy dao gi ch chy li phn bin dng chi tit t lng d gia cng t

0,5 mm xung cn 0,2 mm. ng thi, do chn dao ng knh 10 mm nn dao

ct c 2 rnh hai bn chi tit.

Page | 52

M phng NC Check c 3 chu trnh c kt qu sau. Sau chn Save lu li

V d 2: Gia cng chi tit c vng h.

Bc 1: a chi tit vo mi trng gia cng.

Khi ng Creo Parametric 2.0 Thc hin Set Working Directory n

th mc VOLUME_ROUGH / VIDU_2, click New.

hp thoi New chn Manufacturing.

Ti name t tn VOLUME_ROUGH_VIDU_2.

B chn du stick ti Use default template, OK.

Chn h n v mmns_mfg_nc, OK. Click Assemble Reference model

a chi tit vo mi trng gia cng. Chn chi tit tn VI_DU_2.prt, OK. Chn kiu lp Default, click chut

gia hon tt.

Page | 53

Bc 2: To phi. Chn Automatic Workpiece to

phi t ng. To phi bao kht chi tit. Click chut nt Finish To chun nm mt gc ca phi.

Bc 3: Chn my phay gia cng.

Click Work Center, chn Mill. Chn my phay 3 trc. Click chut nt Finish

Bc 4: Thit lp Operation.

Click Operation, chn chun gia cng l h trc ta to trn.

th Clearance: Chn Plane ti Type.

Reference: chn vo mt phng trn cng ca phi. Value: nhp 15

Done chut gia kt thc qu trnh thit lp Operation.

Bc 5: To vng gia cng bng Mill Volume.

Ch : vng h ca Mill Volume phi Offset ra 6mm trnh trng hp khi gia cng song cn st li mt lng ba via. Gi tr Offset ny phi ln hn bn knh dao.

Page | 54

Bc 6: trang mill click chn Volume Rough. Bc 7: Click chn vo cc name, tool, parameter, Volume, App Walls (thip lp vng xung dao). Ri click Done. Bc 8: t tn cho chu trnh. Name: Volume_milling Bc 9: Ci t dao. To dao ct l END_MILL_10 (dao c ng knh 10) Settings vo Tool Number: 1

Bc 10: Thit lp ch ct bng Parameter. Nhp v bng cc gi tr:

CUT_FEED 1000

STEP_DEPTH 2

STEP_OVER 7.5

CLEAR_DIST 2

SPINDLE_SPEED 2500

SCaN_TYPE TYPE_SPIRIAL

PROF_TOCK_ALLOW 0.5

Click OK kt thc qu trnh thit lp ch ct.

Bc 11: Click chut chn vo vng Mill Volume va to bc 5.

Bc 12: Thit lp mt phng vo dao (App Walls) bt u tham gia ct

Click chn vo mt h ca Mill Volume (mt phng Offset ra 6mm). Mc ch ca bc ny l ch ra mt phng dao i t ngoi mt phng tin vo vng gia cng gia cng. Nh th s trnh c trng hp dao m thng xung phi.

Click OK.

Click Done/Reaturn kt thc qu trnh

thit lp mt phng vo dao.

Page | 55

Ch : i km vi thit lp App Walls ny c thng s APPR_EXIT_EXT bng Parameter. APPR_EXIT_EXT: Khong cch t b mt dao n mt phng App Walls. Cn ci t khong cch ny trnh trng hp dao i xung s c vo phi. Thng nhp t 2 n 5.

Trong v d ny do bc to Mill Volume Offset vng h ra 6mm ri nn

APPR_EXIT_EXT c mt nh l 0.

Bc 13: Click Play Path ri click Screen Play xem ng chy dao.

(Nhn t hng nhn Left)

(Nhn t hng nhn 3D)

Quan st thy c ng xung dao nm ngoi phi, trnh c tnh trng dao m

thng xung phi.


Page | 56

Tuy nhin, nhng ch chuyn tip, dao i phng t ngt nh hnh di y.

iu ny th khng tt cho c dao v my ( c cp chu trnh Face Milling)

(Hnh nh ng chy dao ti cc ch chuyn tip)

Do vy cn hiu chnh li thng s CORNER_ROUGH_RADIUS (Bo cung ti v tr dao i phng) bng Parameters.

CORNER_ROUGH_RADIUS 2

Sau , bm Play Path quan st ng chy dao

Bc 14: Sau khi hiu chnh li thng s CORNER_ROUGH_RADIUS bng Parameters.

Chn Done Seq kt thc chu trnh Volume Rough.

Bc 15: trang Mill click chn Volume Rough thc hin gia cng tinh thnh bn. Do

chu trnh Volume Rough trn cn cha li lng d gia cng tinh thnh bn l 0.5

(PROF_TOCK_ALLOW: 0.5).

Bc 16: Click chn vo cc Name, Tool, Parameter, Volume. Ri click Done.

Bc 17: t tn cho chu trnh. Name: TINH_THANH_BEN

Bc 18: Ci t dao. Click chn dao END_MILL_10 c ci t chu trnh trc . Click OK.

Bc 19: Thit lp ch ct bng Parameter. Sau , Click OK kt thc qu trnh thit lp ch ct.

CUT_FEED 1000

STEP_DEPTH 2

CLEAR_DIST 2

SPINDLE_SPEED 2500


ROUGH_OPTION PROF_ONLY (ng chy dao ch ct b mt thnh bn)

Page | 57

Bc 20: Click chut chn vo vng Mill Volume va to Bc 5.

Bc 21: Click Play Path ri click Screen Play xem ng chy dao.


v tr xung dao, dao tham gia ct. iu ny th khng tt cho dao. Mt khc, chu trnh ny ang gia cng tinh, nu dao xung nh vy th trn chi tit s c mt vt xt do ng xung dao li. khc phc tnh trng ny, c th cho dao i t ngoi vo bng cch ci t App Walls (thip lp vng xung dao) nh chu trnh Volume Rough trn thc hin. Nhng gi s vng gia cng l vng kn th khng thit lp c App Walls. Lc cn hiu chnh li mt vi thng s bng Parameters lc vo dao v ra dao th dao s i theo mt cung trn tip tuyn vi chi tit gia cng.

Cc thng s cn hiu chnh nh sau:

LEAD_IN YES (dao vo theo cung trn tip tuyn vi chi tit).

LEAD_OUT YES (dao ra theo cung trn tip tuyn vi chi tit).

LEADRADIUS 10 (ng knh cung trn).

ENTRY_ANGLE 45 (gc hp bi cung trn v tr vo dao).

EXIT_ANGLE 45 (gc hp bi cung trn v tr ra dao).

Sau khi hiu chnh xong, quan st ng chy dao

Page | 58

Bc 22: Sau khi hiu chnh li thng s CORNER_ROUGH_RADIUS bng Parameters.

Chn Done Seq kt thc chu trnh Volume Rough.

Bc 23: lu li, vo File chn Save.

V d 3: Gia cng chi tit c thnh mng.


Thc hin Set Working Directory n th mc VOLUME_ROUGH / VIDU_3 a chi tit tn VIDU_3.prt vo mi trng gia cng. Bc 2: To phi. To phi c va bao kht chi tit. Done. To chun nm mt gc ca phi.


Chn my phay 3 trc.


Chn chun gia cng l h trc ta to trn.

th Clearance: Chn Plane ti Type v Reference l mt phng trn cng ca phi, ng thi nhp vo Value l 15 mm


Bc 5: To vng gia cng bng Mill Window.

Click Mill Window

Click chn mt phng trn cng ca phi. Done chut gia kt thc qu trnh thit lp Mill Window.

Bc 6: trang Mill click chn Volume Rough.

Bc 7: Click chn vo cc Name, Tool, Parameter, Mill Window , Build Cut (kiu ct)

Bc 8: t tn cho chu trnh. Name: Volume_milling

Bc 9: Ci t dao.

To dao ct l END_MILL_10 (dao c ng knh 10) v Settings vo Tool Number: 1

Bc 10: Thit lp ch ct. CUT_FEED 1000

Page | 59

STEP_DEPH 2

STEP_OVER 7.5

CLEAR_DIST 2

SPINDLE_SPEED 2500


RAMP_FEED 500

RAMP_ANGLE 5

HELICAL_DIAMETER 30

Bc 11: Click chut chn Mill Window to bc 5.

Bc 12: Bng Menu Manager yu cu thit lp Build Cut (kiu ct). By Slice: Ct theo tng lt. By Region: Ct theo tng vng.

Trong v d ny, do chi tit c nhiu thnh mng nn phi ct theo tng lt ct chi tit sao khi gia cng xong s khng b bin dng. Click chut chn kiu By Slice Click chn Confirm Click chn Done/Return kt thc

qu trnh thit lp Build Cut.

Bc 13: Click Play Path ri click Screen Play xem ng chy dao. Quan st qu trnh dao tham gia ct. Dao ct tng lt ct trong 4 vng gia cng. Lm nh vy s tn thi gian gia cng do dao phi nht ln lin tc. Nhng b li s hn ch c bin dng do b dy chi tit mng.

Bc 14: Click Done Seq kt thc chu trnh Volume Rough.

Bc 15: lu li chi tit vo File chn Save.

V d 4:

Page | 60


Thc hin Set Working Directory n th mc VOLUME_ROUGH / VIDU_4.

a chi tit tn VIDU_4.prt vo mi trng gia cng.

Bc 2: To phi. To phi bao kht chi tit. To chun nm gc ca phi nh hnh.

Bc 3: Chn my phay gia cng. Chn my phay 3 trc. Bc 4: Thit lp Operation.

Chn chun gia cng l h trc ta to trn.

th Clearance: Chn Plane ti Type v Reference l mt phng trn cng ca phi, ng thi nhp vo Value l 15 mm Done chut gia kt thc qu trnh thit lp Operation.


Click Mill Window

Click chn mt phng trn cng ca phi. Done chut gia kt thc qu trnh thit lp Mill Window.

Bc 6: trang Mill click chn Volume Rough.

To dao ct l END_MILL_30, Settings vo Tool Number l 1

Thit lp ch ct bng Parameter.

CUT_FEED 1000

STEP_DEPTH 2

STEP_OVER 20

CLEAR_DIST 2

SPINDLE_SPEED 2500


RAMP_FEED 500

RAMP_ANGLE 5

HELICAL_DIAMETE

R 30

Click chn vo Mill Window Model Tree.

Page | 61

(ng chy dao trong Play Path)

(ng chy dao trong NC Check)

Chn Done Sequence kt thc chu trnh Volume rough.

4 gc ca chi tit vn cn lng phi khng ct c do dao ln. ct c 4

gc s dng chu trnh Local Milling vi Corners. Do :

Bc 7: Dng chu trnh Local Milling gia cng 2 gc vung.

trang Milling click chn Local Milling chn Corners.

Bc 8: To dng c ct v thit lp ch ct bng Parameter.

ENDMILL 4 v Tool Number l 2

CUT_FEED 1000

STEP_DEPTH 5

STEP_OVER 2

CLEAR_DIST 2

SPINDLE_SPEED 2500

CORNER_OFFSET 35

ngha ca CORNER_OFFSET:

CORNER_OFFSET: Gi tr ny xc nh v tr vo dao v ra dao cho chu trnh. Thng th gi tr ny c nhp ln hn gi tr ng knh dao ca chu trnh trc mt t. Trong v d ny, do bc trc s dng chu trnh VOLUME ROUGH vi dao c ng knh 30 nn ti chu trnh Local Milling ny nhp gi tr CORNER_OFFSET l 35

Page | 62

Bc 9: Bng Menu Manager xut hin SURF FICK Chn Model ri click Done.

Bc 10: Hp thoi Select xut hin, yu cu

chn cc b mt to nn cc gc cn gia cng.

Chi tit trong v d ny c 2 gc vung v 2 gc c bo cung. chu trnh ny hng dn gia cng 2 gc vung.

Click chut chn 3 mt phng to nn 2 gc vung.

Sau , Click chut gia 2 ln kt thc qu trnh chn mt phng

Bc 11: Bng CRNR REGION xut hin. Chn Define. Sau , chn Edges

Bc 12: Click chn cnh th nht, nhn v gi phm Ctrl chn cnh th 2 cho n khi c 2 cnh c chn u sng ln

Bc 13: Click chut gia 4 ln kt thc qu trnh chn cc cnh ca gc cn gia cng. Ri, Click Play Path

Page | 63

Ch m phng cho thy, dao ct 2 gc vung c chn. Click Done Seq

kt thc chu trnh Local Milling

Tip theo sau y, dng chu trnh Local Milling gia cng 2 gc bo cung cn li

ca m hnh trn. Sau khi chn Local Milling vi ch l Corners. Ri ln lt

lm theo cc bc sau:

Thit lp dao.

To dao ct l ENDMILL 8 v Tool number ca dao l 3

Thit lp ch ct bng Parameter CUT_FEED 1000 STEP_DEPTH 5

STEP_OVER 4

CLEAR_DIST 2

SPINDLE_SPEED 2500

CORNER_OFFSET 35

Bng SURF FICK xut hin, chn Model ri click Done

Click chut chn 5 b mt to nn 2 cung trn.

Ri click chut gia 2 ln kt thc qu trnh chn mt phng

Bng CRNR REGION xut hin, chn Define

Xut hin hp thoi Select yu cu

chn cc b mt bo cung cn c gia cng.

Click chn b mt bo cung th nht, nhn v gi phm Ctrl chn b mt bo cung th 2.

Click chut gia 4 ln kt thc qu trnh chn cc cnh ca gc cn gia cng.

Page | 64

Click Play Path chn Scrren Play xem ng chy dao. Quan st thy, Dao ct 2 gc c bo cung.

Click Done Sep kt thc chu trnh Local Milling.

n y phn gii thiu lnh Volume v Local Milling kt thc

c. Rough, Rerough, Finishing Milling

c.1. Chu trnh Roughing

Dng trong gia cng tc cao (High-Speed). Thng dng chu trnh ny gia cng th, to bin dng cho chi tit. hiu r chu trnh ny cn thc hin v d sau

V d 1: Vng gia cng l vng h.


Thc hin Set Working Directory n th mc ROUGHING RE_ROUGH / VIDU_1 a chi tit tn VIDU_1.prt vo mi trng gia cng.

Bc 2: To phi. To phi bao kht chi tit. To chun nm mt gc ca phi.


Chn my phay ba trc.


Click Operation, chn chun gia cng l h trc ta to trn. th Clearance: Chn Plane ti Type. Reference: chn vo mt phng trn cng ca phi, sau nhp vo Value gi tr l 15

Page | 65

Bc 5: To vng gia cng bng Mill Window ( chu trnh ny ch s dng Mill Window khai bo vng gia cng). Click Mill Window

Click chn mt phng trn cng ca phi.

Bc 6: trang Mill click chn Roughing.

Bc 7: Thit lp dao ct.

To dao ct l ENDMILL 10 vo Tool Number ca dao l 1

Bc 8: Khai bo Mill Window. Ti Machining References click vo dng ch: Click here to add item. Sau , ti Model Tree, click vo Mill Window to trc .

Bc 9: Thit lp ch ct (Parameter).

CUT_FEED 4000 STEP_OVER 3 MAX_STEP_DEPTH 20 ROUGH_STOCK_ALLOW 0.5 SPINDLE_SPEED 6500 CLEAR_DIST 1

Bc 10: Xem ng chy dao:

Click vo Display . Xut hin hp thoi PLAY PATH . Click Play

xem ng chy dao.

Page | 66


Chin lc chy dao trong vng gia cng h:

bng Parameter mt d nhp STEP_OVER: 3. Nhng lt ct u tin ton b dao u tham gia ct. n nhng lt ct tip theo dao mi ct theo STEP_OVER. iu ny th gy hi cho dao v d gy ra trng hp qu ti trong lt ct u tin. khc phc tnh trng ny cn hiu chnh li thng s OPEN_AREA_SCAN trong bng Parameter.

OPEN_AREA_SCAN CONSTANT_LOAD

Trong v d ny vng gia cng l vng h, nn OPEN_AREA_SCAN chn kiu CONSTANT_LOAD (dao chy ngang t vng h tin vo).

Sau khi hiu chnh xong, quan st ng chy dao:

ng chy dao l nhng ng ngang t vng h tin vo trong. Nh vy, mi lt ct dao s ct ng vi lng STEP_OVER c khai bo.

Bo cung nhng v r dao i ng.

Page | 67

C nhng v tr dao i phng t ngt. iu ny th khng tt cho dao v c

my, c bit l trong gia cng tc cao. Nn cn hiu chnh li vi thng s

trong Parameter.

CORNER_ROUND_RADIUS 3

RETRACT_TRANSITION ARC_TRANSITION

RETRACT_RADIUS 4

Trong :

CORNER_ROUND_RADIUS: Bo cung nhng v tr dao i phng

t ngt khi dao ang gia cng, cn nhp vo gi tr bn knh cung.

RETRACT_TRANSITION: Chn ARC_TRANSITION (bo cung

nhng v tr dao i phng mt phng Retract a dao v v tr

bt u cho mt lt ct tip theo). Khi chn ARC_TRANSITION th

RETRACT_RADIUS sng ln yu cu ngi dng nhp gi tr cung

trn.

RETRACT_RADIUS: Gi tr bn knh cn bo cung v tr dao di

chuyn mt phng Retract.

Sau khi hiu chnh xong, quan st ng chy dao ng chy dao lc ny c ti u.

Click vo biu tng kt thc chu trnh Roughing.

lu li, vo File chn Save.

Page | 68

V d 2: Vng gia cng l vng kn.


Thc hin Set Working Directory n th mc ROUGHING RE_ROUGH / VIDU_2.

Chn chi tit tn VIDU_2.prt, OK. Chn kiu lp Default, click chut gia hon

tt. Bc 2: To phi. Chn Automatic

Workpiece to phi t ng.

To phi va bao kht chi tit. Done.

To chun nm mt gc ca phi.


Click Work Center, chn Mill. Chn my phay ba trc.



th Clearance: Chn Plane ti Type. Reference: chn vo mt phng trn cng ca

phi v nhp vo Value l 10. Done chut gia kt thc qu trnh thit lp

Operation.

Bc 5: To vng gia cng bng Mill Window

Bc 6: trang Mill click chn Roughing. Sau , Thit lp dao ct.

Dao ct l ENDMILL 10 v Tool Number l 1

Bc 8: Khai bo Mill Window.

Ti Machining References click vo dng ch: Click here to add item. Sau , ti Model Tree, Click vo Mill Window to trc .

Bc 9: Thit lp ch ct (parameter).

CUT_FEED 4000

STEP_OVER 3

MAX_STEP_DEPTH 20

ROUGH_STOCK_ALLOW 0.5

SPINDLE_SPEED 6500

CLEAR_DIST 1

CLOSED_AREA_SCAN CONSTANT_LOAD

CORNER_ROUND_RADIUS 5

Page | 69


RETRACT_RADIUS 4

Trong :

CLOSED_AREA_SCAN c thit lp kiu CONSTANT_LOAD l kiu chy dao

mc nh, dao xung theo kiu xon c v ct t trong ra ngoi

(Kt qu m phng ng chy dao bng Play Path)

(Kt qu m phng ng chy dao bng NC Check)

Sau khi hiu chnh xong cc thng s. Click vo biu tng kt thc chu

trnh Roughing.

Nh n xt: xem m phng NC Check. bn gc ca chi tit vn cn lng phoi ln

cha c gia cng. Nguyn nhn l do ng knh dao ln v do thit lp bn knh

bo cung v tr dao i phng (CORNER_ROUND_RADIUS: 5) nn dao khng

ct ti c. gia cng li, s dng chu trnh RE_ROUGH.

c.2. Chu trnh ReRough

Dng trong gia cng tc cao (High-Speed). S dng gia cng li (gia cng bn tinh hoc gia cng tinh) m trc chu trnh Roughing khng th t c.

Tip tc v d trn:

Page | 70

Bc 11: Chn lnh Re- rough

Bc 12: Thit lp dao ct.

To dao ct l ENDMILL 3 v nhp vo Tool Number gi tr l 2

Bc 13: Ti No Previous Step, click chn chu trnh Roughing trc cn gia cng li.

Bc 14: Thit lp ch ct (parameter).

CUT_FEED 2000

STEP_OVER 1

MAX_STEP_DEPTH 20

ROUGH_STOCK_ALLOW 0.5

SPINDLE_SPEED 6500

CLEAR_DIST 1


RETRACT_RADIUS 4

OPEN_ARE_SCAN

MAINTAIN_CUT_TYLE

(bo cung nhng v tr vo dao).

Quan st ng chy dao:

Trong chu trnh Re_Rough ny, dao ch ct bn gc ca chi tit m chu trnh

Roughing trc khng ct c. Click vo biu tng kt thc chu trnh

Roughing.

lu li vo File chn Save.

c.3. Chu trnh Finishing

Dng trong gia cng tc cao (High-Speed). c s dng gia cng tinh sau cc

phng php gia cng Roughing hoc Re_Rough.

Trong chu trnh Finishing ch s dng Mill Windown khai bo vng cn gia cng.

Cc b mt cn c gia cng trong chu trnh ny c chia lm 3 loi:

Mt phng nm ngang: l nhng b mt song song vi mt phng OXY.

Page | 71

B mt dc cao: l nhng b mt c dc ln, nhng mt ny gn nh

thng ng.

B mt dc thp: l nhng b mt c dc nh, nhng mt ny gn nh

nm ngang.

phn bit r rng gia b mt dc cao v b mt dc thp th c tham s

SLOPE_ANGLE Parameter yu cu nhp gi tr gc t 0 n 90 (gi tr mc nh

l 45).

Nhng b mt no trong vng gia cng m c gc nghing so vi mt

phng OXY nh hn gi tr nhp SLOPE_ANGLE th c xem l mt

dc thp.

Ngc li, nhng b mt no trong vng gia cng c gc nghing so vi

mt phng OXY t gi tr nhp SLOPE_ANGLE cho n 90 th c

xem l b mt dc cao.

hiu r hn v chu trnh ny cn thc hin mt vi v d sau:

V d 1:


Thc hin Set Working Directory n th mc FINISHING / VIDU_1.

a chi tit VI_DU_1.prt mi trng gia cng

Bc 2: To chun.


Chn my phay ba trc.



th Reference: chn mt phng trn cng ca chi tit v ti Value nhp vo gi tr 15.


Page | 72


Bc 6: trang Mill click chn Finishing.

Bc 7: Thit lp dao ct To dao ct l BALLMILL 30 (dao cu c ng knh 30) v ti Tool Number nhp gi tr l 1

Bc 8: Khai bo Mill Window.

Ti trang Reference: Khai bo vng cn gia cng l Mill Window to bc 5.

Bc 9: Thit lp ch ct (Parameter).

CUT_FEED 1500

STEP_OVER 5

SPINDLE_SPEED 3500

CLEAR_DIST 1

FISNISH_OPTION PROFILE_CUT

STEEP_CONNECT_OPTION S_CONNECT

Gii thiu qua v tham s FISNISHING OPTION v TEEP_CONNECT_OPTION.

FISNISHING OPTION: Cch xc nh b mt cn gia cng v cch thc

chy dao, bao gm bn s la chn sau y cng vi ngha ca chng.

PROFILE_CUT Ch gia cng nhng b mt dc cao.

SHALLOW_CUT Ch gia cng nhng nhng mt phng nm ngang v b mt dc thp.

COMBINED_CUT Gia cng tt c cc b mt nm trong Mill Windown. y l kiu mc nh ca phn mm.

STRAIGHT_CUTS_WITH_CROSSCUT Ging vi kiu COMBINED_CUT nhng ng chy dao l nhng ng thng

STEEP_CONNECT_OPTION: Cch thc chy dao chuyn i gia 2

lt ct, bao gm ba s la chn sau y cng vi ngha ca chng:

S_CONNECT: Dao chy theo ng spline (ng cong hnh ch S). y l kiu mt nh ca phn mm.

Page | 73

LINE_CONNECT: Dao chy theo ng thng.

RETRACT: Trong mi lt ct dao s nhc ln mt phng Retract.

Tr li gia cng chi tit trn.

Bc 10: Click Play Path xem ng chy dao

Khi phng ln quan st thy rng: Dao ch tham gia ct nhng b mt c dc cao.

v tr vo dao v ra dao, do STEEP_CONNECT_OPTION chn kiu S_CONNECT nn gia cc lt ct vi nhau th dao chy theo ng cong hnh ch S nn cch vo dao v ra dao lc ny c ti u.

Cn lt ct u tin th dao tin thng xung phi v lt ct cui cng dao li thng ln mt Retract. iu ny th khng tt nn cn chnh li tham s LEAD_RADIUS (bo cung nhng v tr vo dao v ra dao) bng Parameter.

LEAD_RADIUS 5

V y l kt qu:

Page | 74

By gi hiu chnh li:

STEP_OVER 0.1

SCALLOP_HGT HC cn nhp, quy i t Ra ly bn v chi tit

Click vo biu tng Finish kt thc chu trnh.

Bc 11:

trang Mill tip tc chn Finishing.

Dao ct vn s dng dao BALL_MILL_30.

Th Reference: Khai bo vng cn gia cng l Mill Window bc 5.

Bc 12: Thit lp ch ct CUT_FEED 1500 STEP_OVER 10

SPINDLE_SPEED 3500

CLEAR_DIST 1

FISNISH_OPTION SHALLOW_CUT

Quan st ng chy dao

Do FISNISHING OPTION chn kiu SHALLOW_CUT nn dao ch ct nhng

mt phng nm ngang v nhng mt phng c dc thp.

Page | 75

Nhng chu trnh ny, khng mun dao gia cng nhng mt phng nm ngang nn

cn chnh li thng s FLAT_AREA bng parameter.

FLAT_AREA FLAT_ EXCLUDED

FLAT_AREA: Cch xc nh b mt cn gia cng, bao gm cc s la chn sau

cng vi ngha

FLAT_ INCLUDED Dao s gia cng nhng mt phng nm ngang v nhng mt phng c dc thp. (kiu mt nh ca phn mm)

FLAT_ EXCLUDED Dao ch gia cng nhng mt c dc thp.

FLAT_ONLY Dao ch gia cng nhng mt phng nm

ngang.

(M phng ng chy dao)

Quan st dao ct t trong ra ngoi. Nu mun dao ct ngc li t ngoi vo trong

cn thc hin:

Bc 1: Click chn Tool Motions Bc 2: Click chn 3. Follow Cut id 1916 Bc 3: Click Edi

Page | 76

Bc 4: Click vo Reverse Cut

Bc 5: Click vo biu tng kt thc hiu chnh.

Sau khi chnh xong, quan st ng chy dao thy c dao s gia cng t ngoi vo

trong.

bng parameter mc nh STEEP_CONNECT_OPTION l kiu S_CONNECT

nhng lt ct u tin th dao vn m thng xung phi nn cn chnh li vi

thng s bng parameter.

ENTRY_TO_SHALLOW_AREA LEAD

LEAD_RADIUS 30

ENTRY_ANGLE 45

V tr xung dao by gi c bo cung. Dao xung theo cung trn tip tuyn vi

chi tit.

By gi cn hiu chnh li:

STEP_OVER 0.1

SCALLOP_HGT HC cn nhp, ly t bn v thit k

Click vo biu tng Finish kt thc chu trnh Finishing.

Bc 12: trang Mill tip tc chn Finishing. By gi s gia cng nhng mt phng

Page | 77

nm ngang.

Dao ct vn s dng dao END_MILL_20.

Th Reference: Khai bo vng gia cng l Mill Window to bc 5.

Thit lp ch ct. CUT_FEED 1500 STEP_OVER 10

SPINDLE_SPEED 3500

CLEAR_DIST 1

FISNISH_OPTION SHALLOW_CUT

FLAT_AREA FLAT_ONLY


LEAD_RADIUS 20

ENTRY_ANGLE 15

Quan st ng chy dao:

Thy rng dao ch tham gia ct hai mt phng song song vi mt OXY. Nhng trong

v d ny ch mun dao tham gia ct mt mt phng trong hc thi. lm c

cn thc hin:

Bc 1: Click vo trang Reference Bc 2: Ti Excluded Surfaces click vo dng Click here to add item

Page | 78

Bc 3: Click vo mt phng trn cng (click chn nhng mt phng khng cn gia cng, lc ny dao s khng gia cng nhng mt phng c chn).

Quan st ng chy dao:

Lc ny dao ch gia cng mt mt phng nm trong hc.

Click vo biu tng kt thc chu trnh Finishing.

lu li vo File chn Save.

V d 2:


Thc hin Set Working Directory n th mc FINISHING / VIDU_2. t tn FINISHING_VIDU_2 a chi tit vo mi trng gia cng tn VI_DU_2.prt

Bc 2: Chn my phay gia cng. Chn my phay ba trc.

Page | 79

Bc 3: Thit lp Operation. Click Operation, chn chun gia cng nh hnh bn

th Clearance: Reference l mt phng di cng ca chi tit. V nhp vo Value gi tr l 10 Done chut gia kt thc qu trnh thit lp Operation.

Bc 4: To vng gia cng bng Mill Window

1. Click vo biu tng v Mill Window.

2. Ti Window Plane click vo Select 1 item chn mt phng cn v Skech

3. Ti Model Tree click chn mt phng Top trong mi trng Part.

4. Click vo biu tng Skech

Click vo mt phng bn to Reference. Click Skech.

Tip tc Click vo mt phng bn mt ln na to ng Reference th hai. Click Close

V Skech:

Chn project ri ly li bin dng ngoi ca chi tit.

Click thot khi mi trng Skech. Done chut gia kt thc qu trnh thit lp Mill Window.

Bc 6: click chn Finishing sau to dng c ct.

Dao ct l BALLMILL 12

Page | 80

Ti trang Reference: Khai bo vng cn gia

cng vn l Mill Window to bc 5.

Ti Excluded Surfaces click vo dng Click

here to add item

Click chn mt phng khng cn gia cng trong chu trnh ny (xem hnh

di)

Thit lp ch ct CUT_FEED 1500 STEP_OVER 2

SCALLOP_HGT 0.3

CLEAR_DIST 1

SPINDLE_SPEED 3500

FISNISH_OPTION COMBINED_CUT


LEAD_RADIUS 10

ENTRY_ANGLE 30

Quan st ng chy dao:

Dao tham gia ct khng lin tc m phi vo dao v ra dao nhiu ln do phi phn

bit gia b mt c dc cao v b mt c dc thp. dao c th ct lin tc

cn chnh li thng s SLOPE_ANGLE bng Parameter:

SLOPE_ANGLE 90

Lc ny tt c cc mt phng trong Mill Window u c hiu l mt phng c

dc thp. Nn ch cn vo dao mt ln l c th ct ht chi tit.

Page | 81

Quan st ng chy dao:

By gi cn hiu chnh li:

STEP_OVER 0.1


Click vo biu tng Finish kt thc chu trnh Finishing.

n y l kt thc phn gii thiu khi lnh Rough, Re- rough v Finishing

d. Profile milling

Trong ting vit, Profile c ngha l bin dng, nh vy lnh ny chuyn dng

gia cng bin dng, thng l nhng mt ng hay nhng b mt nm ngang, i khi

c th l mt tr ca l. V l m dng c ct thng s dng l dao phay ngn.

Profile milling c th dng gia cng th, bn tinh hay tinh

Tin hnh gia cng chi tit nm r Profile Milling

Bc 1:

Import chi tit tn l Insert (trong th mc Profile Milling) vo mi trng gia cng

Bc 2:

To phi To chun lp trnh Chn my l my phay CNC 3 trc Retract plane cch b mt cao nht ca phi l 10 mm

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Bc 3: Click chut vo biu tng ca Profile Milling

Bc 4: Chn dng c ct End Mill 20 Bc 5: Chn Reference (i tng gia cng trong bi ny l cc thnh bn ca khi hp ch nht pha trn): chn cc i tng ny c th chn bt k mt trong cc b mt yu cu, sau nhn gi phm Ctrl chn cc b mt cn li. Tuy nhin ti mc ny, nh sn xut cung cp cc cng c qu trnh tr nn nhanh chng hn

Lc ny mt th lnh hin ra v yu cu chn mt i tng m t y cc b mt khc s c chn v tun theo cc lut sau: Loop surface

Seed and boundary surface

All solid surfaces

y, chn cc i tng l cc thnh bn ca khi hp ch nht pha trn, chn lut l Loop surface v mt phng cn chn l mt phng hnh bn cnh

Bc 6: La chn Loop edge, l c s chng trnh quyt nh b mt no cn gia cng

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Hnh trn l cnh Loop edge cn chn

V y l kt qu ca th Reference, nh vy tnh nng Detail tht s gip cng vic ny gim bt thi gian c bit l nu s lng b mt cn gia cng tng ln

Ti th Parameter, nhp cc thng s sau:

STEP_DEPTH 5

CUT_FEED 1200

SPINDLE_SPEED 3000

CLEAR_DISTANCE 2

Ch : i vi Profile Milling, thng s bt buc khng phi l STEP_OVER (nh

Surface Milling) m l STEP_DEPTH

V y l kt qu ng chy dao

(Hng nhn Standard Orientation)

(Hng nhn Front)

Tuy nhin khi dao i xung, dao ct trc tip vo chi tit (nh hnh bn cnh), iu ny s lm nh hng n tui th dng c ct v gy rung ng cho my

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Do cn phi ti u ha qu trnh ct bng cc thng s sau:

LEAD_RADIUS 30

CUT_ENTRY_EXT LEAD IN

CUT_EXT-EXT LEAD OUT

ENTRY_ANGLE 50

EXIT_ANGLE 50

Di y l hnh minh ha gii thch cho cc i lng trn

Khi thit lp cc thng s trn, dng c ct khng vo v ra dao mt cch t ngt, m n theo hng tip tuyn Hy tng tng v mt cung trn c gc chn cung l 100o v bn knh l 30 mm m tip xc vi b mt gia cng ca chi tit, khi : Bn knh cung trn l LEAD_RADIUS

Tng hai gc chn cung l tng ca EXIT_ANGLE v ENTRY_ANGLE

Gc vo dao v ra dao cng ln th qu trnh cng mt, nhng iu li lm tng thi gian chy khng ca dng c ct tng ln nn thng hai gc c thit lp ny nh hn 90o

V y l kt qu ca vic thit lp cc thng s trn:

(Hng nhn Standard Orientation)

(Hng nhn Front)

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Bn cnh , Creo cn cung cp thm mt s thng s khc to nn s a dng cho qu trnh ny

(Thng s TANGENT_LEAD STEP v NORMAL_LEAD_STEP)

(Thng s OVERTRAVEL_DISTANCE)

ngha ca OVERTRAVEL_DISTANCE: Lc ban u, khi dng c ct vo dao,

vt dao n s li trn b mt ca chi tit (d cho thng s LEAD IN c xc

lp v LEAD RADIUS c mt gi tr ln). xa i vt n ny, lc kt thc qu

trnh gia cng, dng c ct cn ct li vt ny, v l ngha ca i lng

OVERTRAVEL_DISTANCE

Khi gia cng mt hc, im khi u ca dng c ct c bit quan trng nu khng

gian hc l rt cht hp, y nh sn xut cho php la chn chnh xc im khi

u dao thng qua cc Axis c to trc

(Click vo biu tng trn to Axis ngay trong lnh Profile Milling)

(Sau khi to xong Axis th click vo Approach Axis v chn Axis )

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(Axis c chn)

(M phng chy dao vi Axis c chn trc)

Ngoi ra, vn t ra l nu b dy cn ct theo chiu ngang qu ln ( chi tit ny

l 5 mm) trong khi dng c ct l 20

Creo cung cp hai tham s iu khin qu trnh ny, v y tin hnh thit lp

sn

PRO_INCREMENT (Khong cch gia hai lp ct lin tip) 2

NUMBER_PRO_PASSES (S ln ct) 3

(ng chy dao sau khi thit lp)

Mt thng s khc cng rt quan trng l: SLIDE_PATH_SCAN vi hai s la chn

l SLICE_BY_SLICE v PASS_BY_PASS

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SLICE_BY_SLICE

Dng c ct di chuyn xung mt on STEP_DEPTH bng 5 mm, sau thc hin ct ton b lng d gia cng trn b mt ny. Sau khi hon thnh xong b mt ny, li tip tc di chuyn xung mt on STEP_DEPTH bng 5 mm v thc hin li qu trnh trn n khi bc ht lng d gia cng.

PASS_BY_PASS

Dng c ct di chuyn xung mt on 5 mm v ct i mt lp kim loi chiu dy l 2 mm. Dng c ct ht lp ny, sau tip tc i xung mt on 5 mm. Sau khi i n gii hn ny th dao rt ln v tr lp ct u tin, tip tc n vo thm mt lp dy 2 mm v thc hin li quy trnh trn n khi bc ht lng d gia cng.

Ngoi ra, m bo qu trnh vo dao v ra dao ca dng c c bit khi dng c

ct mn, vic b dao cn c tnh n, trong Parameter Model Tree, iu chnh cc

thng s sau:

CUT_COM ON

CUT_COM_REGISTER 11

CUT_COM l vit tt ca Cutting Compensation (b dao), cn

CUT_COM_REGISTER l xc nh nh cn nhp bn knh ca dng c ct trn

my CNC.

kim tra iu ny, click chut vo biu

tng hnh bn cnh

y l ni dung file CL Data, dng lnh c khoanh trn cho bit ch b dao c bt, gi tr bn knh dao c nhp vo nh 11 v ng chuyn dao u tin ct vo chi tit l b dao tri.

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Cng ging nh lnh Surface Milling, chc nng Sloped trong Mill Surface cng kt

hp c cng vi Profile Milling. Tuy nhin khc nhau ch, Surface Milling dng

gia cng cho cc b mt Shallow Surface, cn Profile Milling th dng cho Steep

Surface. By gi, hy ng dng ngay lnh ny hiu r vn hn.

Trong th mc Profile Milling, import chi tit tn l Base_Punch vo mi trng gia cng. To phi, thit lp gc lp trnh gia cng, my gia cng l my phay CNC

3 trc.

Click chut vo biu tng Mill Surface, sau chn tip lnh Sloped, by gi p

dng phng php Seed and Boundary surface la chn nhanh nht v thun tin

nht cc b mt cn gia cng

Click chn b mt hnh bn cnh (Seed Surface)

Nhn gi phm Shift, ln lt chn hai b mt pha trn

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Hnh bn cnh l kt qu, la chn theo phng php ny r rng nhanh hn rt nhiu so vi la chn trc tip

Click chut gia kt thc lnh, sau chn b mt di y xc nh chiu xc nh i lng Sloped Angle

Click chut gia, nhp vo Draft Angle l 60, chn tip l Keep Steep Side, sau click chut gia kt thc lnh

Trong Model tree, n chi tit gia cng thy r Mill Surface va c to ra

Click chut vo Profile Milling

Chn dng c ct l dao phay ngn 10 mm

Reference l Mill Surface va mi to

Vo th Parameter, nhp cc thng s sau CUT_FEED 1000 STEP_DEPTH 3

SPINDLE_SPEED 2000

CLEAR_DISTANCE 2

CUT_ENTRY_EXT LEAD_IN

CUT_EXIT_EXT LEAD_OUT

ENTRY_ANGLE 15

EXIT_ANGLE 15

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(ng chy dao gc)

(Qu trnh vo dao)

By gi hy kim tra trong qu trnh vo dao, dng c ct c n trc tip vo chi tit hay khng (tng t nh kim tra xem dao c n vo g lm lnh Surface Milling)? Click chut vo biu tng hnh bn cnh

Click chut vo dng Add Ref Prts (Add Reference Parts), iu ny c ngha l phn mm kim tra xem dng c ct c n vo bt k b mt no ca chi tit. Sau , click chut gia

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Click tip vo dng Run nh hnh bn cnh v ch cho chng trnh chy

Kt qu kim tra c thng bo gc phi pha di ca chng trnh Creo, y dng c ct khng n trc tip vo bt k b mt no ca chi tit

Sau cng, click chut gia kt thc lnh

By gi hy p dng Profile Milling gia cng i tng l mt tr trong l (khng

gian tip cn cht hp) v chi tit c nhiu l

(Mt ct ca chi tit theo hng nhn Front)

(Chi tit nhn t hng nhn 3D)

Tin hnh: To phi To Retract Plane cho chi tit (cch b

mt cao nht mt khong l 10 mm) To chun lp trnh gia cng

Gi s rng bc cng ngh trc, su l trn u gia cng xong phn tr 50,

nhim v cn li l gia cng ni rng to ra phn tr 53 v su 15 mm

Click chut vo lnh Profile Milling

Ti th Reference, chn i tng gia cng l b mt tr hnh bn cnh

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Thit lp dng c ct: Ti Type chn loi dng c l SIDE_MILLING

Sau nhp vo cc thng s hnh hc nh hnh bn cnh

Ti th Parameter nhp cc thng s sau:

CUT_FEED 800

STEP_DEPTH 2

SPINDLE_SPEED 2000

CLEAR_DIST 2

CUT_ENTRY_EXT LEAD_IN

CUT_EXT_EXT LEAD_OUT

ENTRY_ANGLE 25

EXIT_ANGLE 25

Quan st ng chy dao.

(ng chy dao nhn t hng Front)

(ng chy dao nhn t hng Top)

Nhn t hng chiu Top, mt phn ca dng c ct ph c phn vng khng gia

cng. Do m bo hy s dng tnh nng Gouge Check ca Creo c trnh

by phn trc

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Sau khi nhn nt Show All trong Gouge Check, Creo cung cp cc v tr m dng c ct trc tip vo phi Nh vy, dng c ct n trc tip vo phi trong c qu trnh a dao xung v rt dao ln. V vy m cn iu chnh li thng s cng ngh

Trong Model Tree Parameter, iu chnh thng s sau:

NORMAL_LEAD_STEP 5

Quan st kt qu ng chy dao:

Khi so snh vi ng chy dao pha trn c mt s khc bit rt ln, v tr bt u ca dng c khng cn tim n nguy c n vo phn khng ct na

m bo, hy s dng tnh nng Gouge Check thm mt ln na, v kt qu nhn

c l:

Nh vy tnh n thi im ny, mt l c gia cng hon tt, vn l trn chi

tit ny c n 6 l, vic lp li ton b quy trnh trn cho 5 l cn li gy tn nhiu

thi gian v cng sc. V vy nh sn xut phn mm cung cp cng c Pattern cho

phn gia cng

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Click chut phi vo biu tng ca bc cng ngh va thc hin gia cng l trn xong

Sau click chut vo lnh Pattern

Bc 1: Chn cnh th nht sau nhp s i tng Pattern l 3 v khong cch gia 2 i tng l 80

Bc 2: Chn cnh th hai sau nhp s i tng Pattern l 2 v khong cch gia 2 i tng l 70

Sau chn Finish kt thc lnh

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Ti Model Tree, chn biu tng ca lnh Pattern v click chut phi, sau bm Play Path

y l kt qu ca ng chy dao:

(Hng nhn 3D)

(Hng nhn Top)

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Tuy nhin trong qu trnh gia cng, gi s nh phoi sinh ra qu nhiu lm kh quan

st qu trnh gia cng chi tit, r rng trong trng hp ny cn tin hnh dn phoi.

Hoc gi s khi chuyn dao t gia cng l ny sang l khc, cn tin hnh o kim

kch thc do theo thi gian dao b mn. Do vic dng my kim tra khi

chuyn t gia cng l ny sang l khc l cn thit

Ti Model Tree, chn bc cng ngh gia cng l u tin, sau click chut phi chn Edit Definition.

Giao din ca lnh Profile Milling hin ra, click chut vo th Tool Motion

u tin click chut vo dng Insert Here.

Sau , click chut nt CL Command.

Click chut nt Menu.

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Click chut ti dng lnh LOADTL-OPSTOP, load lnh Option Stop.

Click chut ti dng lnh OPSTOP.

Kt qu ca cc s la chn trn l dng lnh OPSTOP c thm vo CL Command, lc ny click chut vo biu tng Finish kt thc lnh.

Bm tip biu tng Finish kt thc lnh Profile Milling.

Ngoi ra, xem r thm kt qu, hy tin hnh xut file gia cng v tm hiu, lnh

Optional Stop hay l dng c iu kin tng ng vi m lnh M01.

n y phn trnh by lnh Profile Milling kt thc.

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e. Pocketing Milling

Chu trnh Pocketing: Dng gia cng tinh hc. Chu trnh ny ging vi chu trnh

Profile Milling. Nhng chu trnh Profile Milling th cc b mt c chn gia

cng ch l nhng thnh bn ca chi tit. Cn chu trnh Pocketing c th chn thm

c b mt y (b mt song song vi mt phng OXY) gia cng.

V d 1:


Thc hin Set Working Directory n th mc POCKETING.

a chi tit vo mi trng gia cng tn VI_DU_1.prt

Bc 2: To chun.

Bc 3: Chn my phay gia cng Chn my phay ba trc.

Bc 4: Thit lp Operation


Reference: chn vo mt phng trn cng ca chi tit v nhp vo Value gi tr l 15 mm


Bc 5: trang Milling chn chu trnh Pocketing.

Bc 6: To dng c ct Dao ct l ENDMILL 20 v Tool Number ca n l 1

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Thit lp ch ct bng Parameter.

CUT_FEED 1000

STEP_DEPTH 4

STEP_OVER 15

SCAN_TYPE TYPE_SPIRAL

CLEAR_DIST 2

SPINDLE_SPEED 2500

LEAD_IN YES

LEAD_OUT YES

LEAD_RADIUS 30

ENTRY_ANGLE 45

EXIT_ANGLE 45

Ti th Reference: lm theo trnh t sau Click chn ch Model Chn Done Click chn tt c cc b mt bn trong

hc cn gia cng tinh.

Click Play Path chn Screen Play xem ng chy dao:

(Dao gia cng cc b mt c chn)

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f. Surface Milling v Cut Line Milling

f.1. Surface Milling

Gii thiu s lc:

Surface milling l lnh chuyn dng gia cng bn tinh v tinh cc b mt cong

phc tp. lnh ny, Creo cung cp nhiu loi ng chy dao khc nhau, i vi

tng loi b mt, ta phi a ra s la chn c c cht lng b mt tt nht

Khi gia cng bn tinh v tinh b mt cong, dao c s dng thng l dao cu, tn

ting anh l BALL NOSE END MILL hoc BALL END MILL v SPHERICAL

END MILL. Di y l cc c im loi dao ny v mt s lu trong qu trnh

gia cng ny:

tnh vn tc ct trong gia cng, khng th da vo bn knh R m phi da vo DE (effective diameter)

Cng thc tnh DE:

DE = 2*

R: bn knh dao

Ap: chiu su ct Cng thc tnh vn tc ct:

Vc =

Khi cc dng c ct c b mt y khng l mt phng dch chuyn, nh dao cu chng hn, s c 1 lng nh kim loi khng b ct v c tnh theo cng thc:

HC = R (

)

Ae: lng dch dao ngang Hay:

Ae = 2*

Bng lin h gia nhm v Hc

Khi tin hnh so snh thu c cng thc xp x gip qu trnh tnh ton nhanh hn:

Ra 0,25* HC

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Nh vy t nhm trn bn v c th tnh c lng lch dao ngang (Step over

hay Ae)

Cng thc kinh nghim tnh chiu su ct Ap khi gia cng cc vt liu cng:

Phn tip theo l gii thiu v cch s dng lnh Surface milling

Cc bc thc hin lnh surface milling

Bc 1: a chi tit vo mi trng gia cng (tn l cover_insert)

Bc 2: Thc hin to phi, chun gia cng, chn my gia cng l my phay 3 trc, mt phng retract

(M hnh gia cng di dng 3D)

(Hnh chiu bng m hnh gia cng)

(Xc lp khong cch ca mt phng retract, tnh t mt cao nht ca phi)

Bc 3: Clich chut vo biu tng ca Surface milling

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1 th lnh hin ra nh chn cc nh hnh v 1: t tn cho bc 2: Chn dao gia cng, bao gm Loi dao ng knh dao S th t ca dao trong cha dao

3: Chn i tng gia cng, y l b mt c th chn ngay trn m hnh gia cng hay t c to trc t Mill surface

Ngoi ra cng c th dng Mill window chn i tng gia cng 4: nh ngha ng chy dao Sau khi chn xong cc ny, click chn Done. Khi , cc th lnh trn s ln lt hin ra theo th t trn

Sau ln lt thc hin cc bc sau:

(t tn Bc l finishing)

(Thit lp cc thng s cho dao)

(Tool Number trong chng trnh gia cng v

trn my CNC phi trng nhau)

CLEAR DISTANCE 2

CUT FEED 1200

SPINDLE SPEED 8000

STEP OVER 2

(Nhp cc thng s gia cng)

Tip theo:

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(Chn loi i tng l Model v click vo m hnh chi tit, sau Click Done)

(Click chn b mt cn gia cng, sau click Done/ Return)

( Define cut, chn ch ct l Straight Cut)

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(Kt qu ng chy dao)

By gi ti Define cut, trong Cut angle, g 90

iu c ngha l ng chy dao s vung gc vi trc Ox mt gc l 90o.

Tuy nhin vi ng chy dao nh trn, s ln vo v ra dao l rt nhiu, ng ngha

vi vic ng c s tng v gim tc ngt, v vy m nh hng n cht lng

ca my nhiu.

Mt trong nhng bin php khc phc l bin on chuyn tip gia cc ng

chuyn dao t on thng sang cung trn, tr li phn Parameter v thit lp.

LACE OPTION ARC CONNECT

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(ng chy dao vi Lace option l Arc connect)

Ngoi ra, iu chnh i lng HC trnh by phn u, hy iu chnh i

lng sau trong th Parameter:


Ch : i vi surface milling, i lng STEP_DEPTH c thay th bng hai i

lng sau.

NUMBER_CUTS

c hiu l s ln chuyn dao

OFFSET_INCREMENT c hiu l khong cch gia cc ng chuyn dao

hnh di y, chiu su ct c iu khin bng cch chnh:

NUMBER_CUTS 3

OFFSET_INCREMENT 0,5

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Trong trng hp khng chnh hai i lng ny, dng c ct s n thng xung i

tng gia cng, v nu lng d gia cng l dy c th lm h hi n dao.

By gi hy iu chnh li:

STEP OVER 0,1

Phn tip theo xin trnh by v kt hp gia Surface milling Mill surface:

Bc 1: a chi tit vo mi trng gia cng (tn l surface_milling_1).

Bc 2: Thc hin to phi, chun gia cng, chn my gia cng l my phay 3 trc, mt phng retract (khong cch l 10mm tnh t mt cao nht ca phi).

Nhng y, i tng gia cng l b mt A khng bao gm l gia.

lm c iu , cn s dng Mill surface to ra i tng gia cng.

Sau khi Click chn biu tng Mill surface

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Tin hnh tng t nh hng dn Mill surface, nhng sau khi bm t hp phm

Ctrl+V thc hin 2 thao tc sau.

(Th Options, click chn Exclude surfaces and fil

holes)

(Click chn l cn loi ra)

V y l kt qu:

Sau chn lnh Mill surface, thit lp ch ct v chn dao:

CUT FEED 600

CLEAR DISTANCE 2

LACE OPTION ARC CONNECT

STEP OVER 12.5

SPINDLE SPEED 2000

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Ch : s dng Mill surface to ra trc lm i tng gia cng, cn phi

tri qua 2 bc nh sau.

(Click chn Mill Surface v chn Done)

(Chn Add v Select, sau click chn vo Mill surface trn m hnh 3D

V y l kt qu.

By gi hy iu chnh li:

STEP OVER 0,1

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f.2. Cut line milling

Trong cc phin bn trc y, lnh Cut line milling c tch hp sn trong lnh Surface milling. Tuy nhin phin bn Creo 2.0, lnh ny c tch ra hon ton thnh mt lnh ring Cut line milling c o ch n to ra cc ng i ca dao ging vi ng bao ca b mt gia cng, v vy m lnh ny c s dng nhiu trong gia cng

nm bt r rng v cch s dng lnh ny hy tin hnh gia cng 1 chi tit

Import chi tit gia cng lnh Surface milling vo chng trnh (chi tit cover_insert)

Gi nguyn gc ta v hnh dng phi to

Chn dng c ct l dao cu 10

Nhp cc thng s gia cng di y vo:

CLEAR DISTANCE 2

CUT FEED 1200

SPINDLE SPEED 8000

STEP OVER 2

Click vo th Cut line

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Cutline 1 hay Cutline 2, l cc ng bin gii hn b mt gia cng (on thng hay ng spline, ) Nu nhiu ng bin thuc cng mt Cutline th gia cc ln chn phi nhn gi

Shift

(Chn cutline th nht)

(Chn cutline th hai)

(Kt qu ng chy dao vi hng nhn TOP)

Page | 111

(Qu trnh vo dao)

Tip theo tin hnh gia cng chi tit khc thy c im mnh ca Cut line

milling

M file gia cng chi tit Surface _ milling_1, dng lnh Mill surface to i tng

gia cng mi nh hnh di y:

Click chut lnh Cut line milling, chn dao phay cu 25, nhp cc thng s sau:

CUT FEED 600

CLEAR DISTANCE 2

STEP OVER 12.5

SPINDLE SPEED 2000

Sau vo th Cut line, chn cc ng bin nh sau

(Chn cutline th nht)

(Chn cutline th hai)

V y l ng chy dao tng ng:

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Nh vy ch cn quy nh cc ng Cut line ng th s thu c vt cc ng

chy dao theo ng nh hnh dng ca b mt cn gia cng

Bn cnh , Creo cn cho php thay i hng ca dao i, bng cch click chut

vo biu tng mi tn di y

(Dng c ct di chuyn theo hng khc nhau khi i chiu mi tn dn hng)

Phn mm cn cho php i th t ca cc Cut line, iu ng ngha vi vic thay

i v tr dao bt u n vo phi

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(Di chuyn Cut line 1 xung bng cch click chn tn v bm vo mi tn)

(V tr vo dao c thay i)

By gi hy chnh li thng s sau t c cht lng b mt tt nht:

STEP OVER 0,1

Cc thng s va gii thiu trn gip cho qu trnh gia cng c nhiu s la chn,

tuy nhin trong qu trnh dch dao ngang, ng chuyn dao l on thng, iu

gy ra s tn

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