Phan Ivlap Trinh Gia Cong Tien Lathe

8/2/2019 Phan Ivlap Trinh Gia Cong Tien Lathe

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Trung Tm o to CAD/CAM-CNC Tinh Vit MC X6

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PHAN IV. LAP TRNH GIA CONG TIEN VAGIA CONG CAT DAY

CHNG I : LAP TRNH GIA CONG TIEN

Vetiet dien gia cong nh (Hnh1).

Hnh 1

I . Lap trnh gia cong tien tho(Lathe Rough).1. Xac nh dang gia cong:

Chon dang gia cong latien tho(Toolpath Rough)2. Chon bien dang gia cong:

Chon bien dang gia cong nh (Hnh 2)

Hnh 2


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3. Thiet lap thong socong nghe:

3.1. Chon dung cucat vathiet lap cheocat:

Trong Tab Tool parameter chon dao tien trai T0202 R0.8 OD ROUGH LEFT- 80

DEG nh (Hnh 3)

Hnh 3

+ Feed rate: Bc tien an dao: 0.5mm/vong

+ Plunge rate: Bc tien am dao ngang: 0.25mm/vong

+ Spindle speed: Toc oquay truc chnh: 550 vong/phut


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Hnh 4

Cl ick phai chuot vao dao ta chon exac nh cac kch thc dao( Hnh 4)

- Tab Insert: Xac nh dang manh hp kim ghep coten la:CNMG12 0408

+ C: Hnh dang manh hp kim lahnh thoi cogoc nhon la800

+ N: Goc sau la00

+ M: Vat lieu manh hp kim laCacbit loai M

+ G: Dang tiet dien manh hp kim

+ 12: ng tron noi tiep hnh thoi cong knh la12mm


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+ 04: Chieu dai manh hp kim la04mm

+ 08: Ban knh mui dao 0.8 mm

Hnh 5

- Tab Holder: Chon can dao (Hnh 5)

+ Name: MWLNL 2525M08

+ M: Cach kep manh hp kim laM

+ C: Dang manh hp kim lahnh thoi goc 800

+ L: Goc nghieng li cat la950, goc nghieng li cat phula950

+ N: Goc sau li cat la00

+ 2525: Kch thc can dao la25x25mm


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+ M: chieu dai la150mm

+ 12: Kch thc manh hp kim la12mm

Hnh 6

- Tab Type- general Turning: Xac kieu cat , chon kieu nh hnh 6

- Thiet lap cach botr dao :


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Chon Setup tool chon cac thong sonh hnh 7

Hnh 7


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- Thiet lap phoi vamam cap (Stock setup) Hnh 8

Hnh 8- Stock: Thiet lap phoi

Chon cach gaphoi len truc chnh ben trai (Lef t spindle)

Chon Parameter ekhai bao kch thc phoi (hnh 9)


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Hnh 9

Hnh 10

- Chuck: Chon dang mam cap


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Tren Hnh 10 ta thay conhieu cach kep phoi, chon cach kep vakhai bao kch thc chau kepnh Hnh 10

Hnh 11

3.2. Chon Tab Rough Parameter ethiet lap cac thong sogia cong (Hnh 11)

+ Depth of cut: Chieu sau cat

+ Minimum cut depth: Chieu sau cat nhonhat

+ Stock to leave in X: Lng d cha lai theo phng X

+ Stock to leave in Z: Lng d cha lai theo phng Z

+ Entry amount: khoang cach xac nh iem vao dao

+ Cutting method: Xac nh kieu cat: oneway(1 hng), zigzag ( qua lai 2 hng)

+ Rough direction/ angle:


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Rough direction (OD): Dang cat latien ngoai

Angle: Goc gia ng chay dao

+ Overlap: Thiet lap khoang lui dao nh (Hnh 12)

Hnh 12

4. Mophong gia cong:

- Backplot: ta coket quang chay dao nh (hnh 13)

Hnh 13


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- Verify: Ket quamophong Verify ( hnh 14)

Hnh 14

I I . Lap trnh gia cong tien tinh (Lathe finish).1. Xac nh dang gia cong:

Chon dang gia cong latien tinh (Toolpath lathe finish)2. Chon bien dang gia cong:

Chon bien dang gia cong nh phng phap gia cong tho.

3. Thiet lap thong socong nghe:


Chung ta khai bao giong nh gia cong tho.

3.2. Chon Tab Finish Parameter ethiet lap cac thong sogia cong (Hnh 15)

+ Number of step: Solan cat tinh

+ Finish stepover : khoang cach gia 2 lan cat tinh

+ Stock to leave in X: Lng d cha lai theo phng X la0

+ Stock to leave in Z: Lng d cha lai theo phng Z la0


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Hnh 15


- Backplot: ta coket quang chay dao nh (hnh 16)

Hnh 16


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- Verify: Ket quamophong Verify ( hnh 17)

Hnh 17

I I I .Lap trnh gia cong tien ranh (Lathe Groove)1. Xac nh dang gia cong:

Chon dang gia cong latien tinh (Toolpath Lathe Groove)2. Chon bien dang gia cong:

Xac nh hnh dang ranh trong menu nh (Hnh 18)

Hnh 183. Thiet lap thong socong nghe:



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Luc nay dao ta chon xuat hien tren th muc dao trong thong soTool Parameter vi sohieudao laT2424 R0.3 W4 FACE GROOVE RIGHT- MEDIUM ( Hnh 19).

Hnh 19

- Cl ick vao dung cunay exac nh cuthedao trong hop toai Lathe Tool- Chon Insert exem hnh dang vakch thc manh hp kim ghep.- Chon Holder exac nh can dao vasa lai kch tht chieu dai can dao.- Chon Setup Tool echon cach botr dao, chon cach botr dao nh ( Hnh 20).- Chon Tab Parameter exac nh cheocat (Hnh 21).+ Chon Compute from material ehethong tnh toan cheocat toi u nhattheo vat lieu mata axac nh.

- Chon OK ehoan thanh menu Toolpath Parameters.


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Hnh 20

Hnh 21


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- Chon Menu Groove Shape parameter : menu nay dung exac nh hnhdang ranh, do ta axac nh hnh dang ranh roi nen ta khong can phai xacnh lai vaginguyen cac mac nh cua hethong.

Hnh 22- Chon Menu Groove rough parameter exac nh cac thong socat thova

xac nh cac thong sonh (Hnh 22) Chon Depth Cut exac nh chieu sau cat cho moi bc, xac nh cac

thong sonh (Hnh 23).+ Depth per pass: Khai bao giatrcuthecho moi bc cat+ Number of passes: khai bao solan cat

Move Between Depths: Xac nh kieu di chuyen gia 2 bc tien dao+ Zigzag: 2 hng+ Same direction: Cung 1 hng


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Retract to stock clearane: Xac nh khoang cach lui dao vemat ngoaiphoi theo toaotuyet oi (Absolute) hay tng oi (Incremental).

Hnh 23 Chon Filter : Chap nhan cac mac nh cua hethong nh hnh 24.

Hnh 24

Chon Peck Groover . exac nh chieu sau nhap dao(Hnh 25).


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Hnh 25- Chon Menu Groove Finish Parameter vakhai bao cac thong sogia cong tinh nh

(Hnh 26). Hnh 26


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- Backplot: ta coket quang chay dao nh ( Hnh 27).

Hnh 27

- Verify: Ket quamophong Verify ( Hnh 28)

Hnh 28

( chuy: cach lap trnh tien ranh mat au cung tng tnh tien ranh mat tru).


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IV.Lap trnh gia cong tien ren (Lathe Thread).Trong phan lap trnh tien ren khac vi lap trnh cac kieu gia cong khac lata khongcan tao hnh hoc trc . Do ota phai xac nh hnh dang ren mata muon gia cong

bang cac thong soren tieu chuan.Toolpath Lathe Groove.

1. Chon dung cucat:

Hnh 29

Trong bang chon dung cucat chon T0303 R0.144 THREAD RIGHT LARGE (Tien renngoai cln). Cl ick vao dung cuexem hnh dang dung cucat, trong Insert ta thay hnhdang manh hp kim ghep nh( Hnh 30). Chon manh hp kim hnh tam giac Metric 60 deg

+ OD (tien ren ngoai)

+ ID ( tien ren trong)


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Trong bai thc hanh nay ta chon tien ren trong

+ mm/thread :2 (loai manh hp nay cothedung tien ren vi bc ren la2mm).

Hnh 30

Chon Holdersexem hnh dang can dao vachap nhan cac thong somac nh nh (Hnh 31)

Hnh 31

Chon Setup tool vaginguyen cac la chon .


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2. Khai bao hnh dang ren- Chon MenuThread Shape Parameter.

Hnh 32+ Lead : Bc ren+ I nclude angle: Goc chan ren+ Tread angle: Goc vao ren+ Major Diamater: ng knh nh ren+ Minor diameter : ng knh chan ren

+ Thread depth: Chieu cao ren+ Start position: Vtr bat au ren+ End position: Vtr ket thuc ren


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Neu chung ta biet rocac thong soveren th ta nhap trc tiep cac thong sohnhdang ren vao. Neu ta chbiet ng knh ngoai cua ren vabc ren vata muonbiet cac thong sokhac th hethong cothegiup ta tnh toan cac thong sokhacbang cach chon Select from table vata cobang nh (Hnh 33)

Hnh 33

+ Tren la chon thread from ta chon ren hemet (Metric M Profile).

Neu ren chung ta khong theo tieu chuan ta chon Computer from fomula ekhai bao ren chung ta can (Hnh 34)

Ta sa Lead (bc ren), sau ohethong tnh toan lai cac thong song knhchan ren, chieu cao ren.


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Hnh 343. Thiet lap cac thong sogia congThiet lap cac thong sogia cong nh (Hnh 35)

Hnh 35


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- NC code format: Xuat chng trnh gia cong di dang chu trnh (Canned)

- Determine cut depths from: Thong sonay xac nh chieu sau cac bc cat ren

+ Equal area: Chieu sau cat c xac nh bi cac tiet dien lp cat bang nhau

+ Equal Depth: Chieu sau cat c xac nh bi chieu day cac lp cat bang nhau

- Determine number of cuts from: Xac nh sobc cat ren

+ Amount of first cut: Sobc cat ren c xac nh theo chieu day lp cat au tien, sau ohethong ttnh toan ra solan cat

+ Number of cuts: Sobc cat ren c xac nh , sau ohethong ttnh ra chieu sau cacbc cat.

- Stock clearance: khoang cach thoat dao ra khoi mat phoi

- Over cut: Khoang chay dao vt quavtr ket thuc ren

- Anticipate pullof: Khoang giam toc cuoi hanh trnh tien ren (lui dao)

- Acceleration Clearance: khoang cach tang toc luc vao dao, thong sonay etang toc odichuyen ttrang thai ng yen sang trang thai toc okhong oi trong quatrnh tien ren

- Lead in angle: Xac nh goc vao dao

- Finish pass allowance: Lng d cho bc tien tinh etao khe hcho moi lap ghep

- Number of spring cuts: Solan dao chay vet lai makhong cat phoi, bc di chuyen naydung ekhsai lech do bien dang gia cong.


- Backplot: ta coket quang chay dao nh ( Hnh 36).

Hnh 36


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- Verify: Ket quamophong Verify ( Hnh 37)

Hnh 37

- Chon exuat chng trnh gia cong sang maG-Code ta c

chng trnh NC nh sau:%

O0000

G21

G0T0202

G18

G97S1716M04

G0G54X102.015Z5.5

G50S3600

G96S550

G99G1Z3.5F.5

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G0Z5.5

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G0Z5.5

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X66.148

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X39.814Z-3.093

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Z.2

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G0Z5.5

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G3X45.992Z-40.291K-.4

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G1X83.997

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G1X80.992

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X79.519Z-119.982

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X80.986

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G1X73.982

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G0X78.983

Z-112.297


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