1 Sn phm: Con ln cn tole.

2 phi :

Phi thng dung cho bnh cn tole l thp C45 Kch thc phi thng c chn tu thuc cht lng,hnh dng phi. y phi c kch

thc nh sau : Dy :78mm (chun)

ng knh phi :156mm L :ng knh 70

3. Yu cu v chnh xc. Dung sai cho phm 0.2mm

3.Tin hnh lp trnh gia cng trn MasterCam X3: Khi ng MX v m file bn v ca chi tit :.dwg

Dng lnh Xform translate di chuyn chi tit v gc to gia cng.

M layer v n cc layer khng cn dng lp trnh,mi ng chy dao s dng mt layer duy nht :

Trang anhso.net bi vn cha up nh qua c nh chu.Up sau. up tip vy :

To ng chy dao(bin dng chi tit)

Chn my tin mc nh l Generic

nh ngha phi.

nh ngha mm cp

cho an ton th chng ta nn nhp cc thong s ca mm cp nh vy khi MX thc hin tnh ton gia cng s pht hin va chm vi mm cp y l iu nn lm.

Chn Rough toolpath tin hnh gia cng th.

Chn hng chy dao kiu chain

Chn kiu dao v chnh sa theo mun

Chn Insert tng ng loi cn dao (holder)

Chn v nhp cc thong s holder.

Trong parameter chn kiu b dao compensation l dao tm,nhp cc gi tr v feed rate (0.12),Plunge rate (bc tin xung dao thng gc) 0.08.,m ngui coolant (Flood),tc

trc chnh (spindle speed) 650.Cc thong s ny c th nhp li trong tab Toolpath Parameter,c th b qua bc ny.

Chn kiu chy dao ZigZag,chiu su ph th 1.5 lng d cha li cho pass semi (bn tinh) l 0.2mm

Trong hp thoi Senmi finish nhp lng d cha li cho gia cng tinh l 0.1 theo trc X v Z.

Kiu vo dao Lead in -90,ra dao +90.Chn ch gia cng rnh nu c.

Kt qu

Gia cng tinh : Vo toolpath chn finish :

Chn Chain l ng chy dao trc Vo tab tool parameters v chnh sa cc thong s dao cho ng yu cu. y

chn loi dao tm.Insert c chiu dy 4mm,bn knh nh dao 0.8mm Cc thong s v la chn khc lm ging nh dao ph th (l do cng loi cn dao tm,ch khc loi Insert)Nhp cc thong s cho toolpath l feed rate :0.12,tc

trc chnh 720 vng/pht. Cc thong s cho finish parameter :

Finish stepover :Chiu su ct cho Pass gia cng cui l 0.1mm. Number of finish stepover :S Pass gia cng tinh (cho bao nhiu Pass l ty

ngi lp trnh), y mnh nhp l mt Pass,v lng d ca Pass gia cng trc li l 0.1mm.

Stock to leave in X :Lng d cha li sau gia cng tinh. y mnh chn l 0 v l tinh.

Stock to leave in Z :Lng d cha li cho phng Z l 0.tng t phng X Cc thong s khc trong hp thoi c th gii thch nh sau :

Phn Tool compensation :B dng c ct Compensation type :Kiu b dao c cc la chn sau,nhng mnh bit ci no ni

ci y,cc kiu khc cc bn t tm hiu . Kiu Computer :B dao bng cch phn mm t tnh tan v khi xut chng

trnh ch c ta ,khng c G40,G41,G42.

Kiu Control :B dao theo h iu khin ca my CNC.Khi xut chng trnh s c G40,G41,G42.

Compensation direction :Hng b dao :Right :B dao phi,Left :b dao tri. Roll cutter around corners :Chn x l cnh chi tit hoc khng hoc chy theo

hnh dng. Corner Break : cc kiu ph b gc cnh hoc bo cnh.

Lead in/out : Nhp cc thong s cho vic vo dao ra dao.Thng thng mnh chn

Lead in :-90. Vo dao thng gc. Lead out +90 .Rt dao thng gc.

Plunge Parameter :Ch cho php hoc khng cho php gia cng rnh nu c trn chi tit.La chn ny thch hp vi trng hp khi s dng dao ny gia cng nhng khng cho ph rnh v loi dao

khng thch hp gia cng rnh, li cho bc khc lm.

Z-234.874 Z0.000

Nhn OK tip tc.Mastercam s t ng tnh ton cho bn.

Gia cng tin : Tin vt mt :Lnh face

Chi tit :Gi s chng ta gia cng chi tit nh sau. y mnh ch ni v gia cng vt mt thi nha.

Chn my gia cng.

Vo machine type\lathe chn loi my l defaut,bn c th ng loi my m bn ang lm vic bng chn vo Manage list.

nh ngha phi v mm cp :

Hp thoi Machine Group properties. Xut hin vi tap stock.

chn properties trong phn stock nh ngha phi.

Tap Geometry :Hnh hc ca phi.

Trong geometry s c vi loi kiu hnh hc phi nhng mt nh l Cylinder ri nn bn khi cn chnthm,trng hp l phi c dng bt k khc mi chn loi khc,hn na gia cng CNC l gia cng hang lot nn d nhin phi

phi thch hp.

Nu bn chn Make from 2 point th vic nh ngha phi s thc hin bng cch pick chn 2 im 2 gc ca hnh ch nht trn mt

top tng t nh 2 gc ca chi tit. OD :nhp gi tr ng knh ngoi chi tit,nu nh ngha phi bng 2

im th y c th nh ngha li,cc bn hy th lm cho bit.

ID :chn ng knh trong nu c hy nhp them gi tr cho ng knh trong ca chi tit.

Length :nhp chiu di chi tit

Axis :t gc ta phi bn phi hay phi chi tit,thong s ny c ngha quan trng, y mnh t gc ta phi bn tri chi tit.

Use margins:s dng cc lng d.Khi chn vo cc thong s lng d theo ng knh v chiu dy s hin ra,chng ta hy nhp vo nu c.

y mnh cho lng d theo ng knh l 1mm.v lng d theo chiu dy bn phi l 3mm.

Chn Ok.

Xong bc to phi v quay li hp thoi Machine Group Properties. Chng ta tip tc nh ngha mm cp

Trong phn Chuck Jaws c 2 la chn l left v right ,mnh chn left spindle tc bn tri trc chnh cng l bn tri phi.V tip tc chn

vo Properties.

Xut hin hp thoi : Trong phn Geometry ny s nhp cc thong s quan trng sau y :

Ok chp nhn. Ok tip tc.

Nu thong s no sai ta c vo hp thoi m nhp li.

Bc tip theo to toolpath : Vo toolpath chn Face :

Hin ra hp thoi : C OK

Tip tc hin ra hp thoi .

Pha bn tri hp thoi tool parameter chn dao cn gia cng hoc c th bn to mi mt dng c ct ty theo dao m bn c.Phn ny s cp sau nu nh bn no cn hi hy t vn . y mnh ch chn ly mt

dao lm v d,cn nhiu vn khc lien quan n thc t chng ta s bn tip.

Trn hp thoi ny s c mt s iu ta cn quan tm sau : Tool number :s th t dao

Offset number :s ch v tr Offset ca dao trn my gia cng.Ci ny rt quan trng,cng cp sau nu cc bn hi.

Feed rate :Bc tin dao.ci ny lien quan n nhiu th,cn kinh nghim. Spindle speed :tc trc chnh.

Max spindle speed :gii hn max ca tc trc chnh ty thuc my. Coollant :ngui,m nc ty thuc vo chc nng m nc, y mnh

chn flood. Chuyn qua tap Face parameter :

Select point :chn vng b gia cng.bng cch chn 2 im gii hn. Use stock :s dng kch thc phi cn li sau gia cng.iu ny c ngha

bn phi nhp chiu dy ca phi cn li sau khi thc hin vt mt. Compesation type :

Computer :phn mm s t ng tnh ton v cho xut ra chng trnh l ta dao

Control :b dao theo b iu khin ca my gia cng CNC.

Compensation direction :hng b dao,ch ny bn khi lo,khi chn hng gia cng phn mm t ng hiu hng b dao tri hoc phi,bn khi cn chn,tuy nhin cng c khi phn mm chn hng b dao sai cc bn

phi chn li.

Entry amount :V tr t dao bt u gia cng..Nu dao ang v tr home th trc khi gia cng,n s thc hin chy dao nhanh n v tr

sau mi thc hin gia cng.

Rough stepover :Chn vo y bn s nhp chiu dy cho mi pass gia cng th.Nu khng chn th s thc hin gia cng theo gia cng tinh.

Finish stepover :Nhp chiu dy pass tinh,pass ny phi c chiu dy gia cng cho mi pass l t hn so vi gia cng th.

Maximum number of finish passes :S pass gia cng tinh ln nht l bao nhiu.Ci ny cn ty thuc vo chiu dy ca mi pass gia cng tinh nn

mi c ch MAXIMUM. Overcut amount :Nhp them khong dao i qu tm,ci ny dao ct

ht qu tm phi. Retract amount :Nhp khong li dao, bt u thc hin pass tip theo. Rapid retract :Ch li dao nhanh (G0).Ci ny nu khng chn th khi ct xong mi pass dao s li v v tr bt u cho pass tip theo vi bc

tin khi ct gt.Ni chung l nn chn. Stock to leave:Lng d cha li.Nu l gia cng th th cha li cn

khng nhp 0 vo. Cut away from center line :la chn ny c ngha l s thc hin vt t tm ca phi hng ra ngoi ng knh phi,ch dnh cho trng hp

phn c l. Hon tt chn OK.

MasterCam s thc hin tnh ton. M phng chy th v xut chng trnh.Bc ny bi trn c ni n,nn

mnh dng bi ny li