Thuat Ngu Cam

8/7/2019 Thuat Ngu Cam

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3 gi tr X,Y,Z trong m hnh :nhp kch thc phi bng tay.

Ty chn Bounding box phi s t ng nhn bng gii hnbin ca chi tit.

Select corners :To phi bng cch chn cc gc ca chi tit.

Stock origin :Gc ca phiin view coordinates :Trong cc h ta trong khung nhn. (ccbn nhn thy mi tn ch tm khi hp trong hp thoi y).

Ok kt thc qu trnh to phi. tip tc chng ta vo toolpath chn surface rough (gia cngth b mt cong) chn Pocket tin hnh bc gia cng th.


4/19

Xut hin dng nhc :Select drive surfaces (chn cc b mtcn gia cng).Trn chi tit gia cng ca chng ta c nhng bmt khng cn gia cng nn ta khng cn phi chn.Nh lchn y cc b mt ca hc chi tit,nu thiu MX s loi tr

b mt v khng tnh ton gia cng cho b mt .

Trn hnh trn c ch b nhm l vng ch nht khoanhvng,bc ny khng ng,nhng khng th ch tip nn phiup i thi.Nn nh l ch chn cc b mt cn gia cng thi(hc-Cavity).Enter tip tc.S hin ra hp thoi


5/19

Surface selection :Cc la chn b mt gia cngDrive :B mt cn gia cng.Tr chut nt chn l ch vo chnb mt cn gia cng,Nt c du cho l hy b la chn vchn li.Nt show :Cho xem cc mt va chn,khi chn nt ny cc bmt khng c chn s n i cc bn s thy cc thiu xt nuc,hoc cc b mt chn tha,ch cn pick chut ch vo b mtcn loi b thi.

Check :Cc b mt khng gia cng,trng hp cc bn thchin chn cc mt drive l ton b cc b mt ca chi tit th phn check ny cc bn c th chn nt con tr chut chncc b mt khng cn gia cng,tt nhin cc b mt cn giacng-drive s gim i.Cc nt chn trong phn check tng t nh phn drive.

containment :Gii hn vng bin gii gia cng. y bn chn


6/19

phay hc nn bc ny b,khng cn a vo,trng hp hch th hy chn phn ny. bc ny nu bn chn vng bin lcc cnh ngoi cng ca mt bn chi tit (nhn t mt top) thMX s gia cng lun phn ngoi ca chi tit.Ch ny c th giithch sau nha.

Entry point :Chn im vo dao.Bn nn chn im ny nmngoi bin ca chi tit (trn cng c view chn top thy) Ccla chn khc ca phn ny tng t nh drive,check.Chn Ok.Tip tc hin hp thoi sau :

Trn hp thoi s c nhng thng s sau :


7/19


8/19

Hp thoai define tool /type c nhng thng s dao sau :End mill :dao phay ngn.spher mill dao phay cuBull mill dao phay c bo R y dao.Face mill dao phay kha mtRad Mill dao phay R :loi dao phay nh hnh bn knh b mtsau gia cng.Slot mill dao phay rnh nh hnh.

Bore bar dao doa.Taper mill :dao phay rnh cn.Drill :Mi khoan..........Cc loi khc t dng nn cng khng r lm.Calc.Speed/Feed :Tnh ton ch ct bao gm tc v bctin,nhng thc s cha cn thit lm,i chn dao xong,thitlp chiu su ct mi tnh n.


9/19

Save to library tool :Lu vo th vin dao.Cc dao do cc bnnh ngha c th lu li dng ring.

Chn spher mill :dao phay cu v OK.Xut hin hp thoi sau :

Trn y s hin ra hp thoi hnh hc ca dng c ct :C ccthng s cn quan tm sau :

Flute :Chiu di phn ctShoulder :chiu di n vai dao.Overall :Chiu di ca dao.Corner radius :bn knh ca y cu-bng na ng knh dao.Diameter :ng knh dao.Arbor diameter :ng knh phn kp dao.

capable of:C kh nng dng cho


10/19

Rough :Ch gia cng thFinish:Ch gia cng tinh.Both dng cho c 2 trng hp.Phay th v tinh.

Trang Parameter

Rough XY Step :B rng ca phn dng c ct n phi trongmt phng XY,tnh theo % ca ng knh dng c ct.V d

dao ng knh 20mm vi gi tr trong ny l 60 th b rngct s l 12mm.

Finish XY step :Tng t nh trn. rng ca phn dng cct n vo phi khi gia cng tnh theo % ca dng c ct.

Rough Z step : su ct mi pass tnh theo % ca ng knhdng c ct.


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Finish Z step : su lt ct tinh tnh theo % dng c ct.

Required pilot dia: ng knh l dn hng dng khi khoan,tar ren,khot l...

Material :Vt liu ca dng c ct :HSS :High speed steel :Thp gi hay theo cao tc.CarbideCeramic :sBorzonUnkown :ngi dng ch nh.

% of matl. cutting speed :tc ct mc nh ly theo % tc ct b mt trong d liu tnh ton ca MX.

% of matl. feed per tooth :Tc ct mt nh ly theo % tc ct b mt trong d liu tnh ton ca MX,thng s nyquyt nh do vt liu ca dng c dao ct v vt liu phi bct.Tool file name :Tn tp tin ca dng c ct.

Tool name :tn dng c ct.

Chuck :dng c kp,mm cp.

Manufacturer's tool code :m dng c ca nh sn xut.Feed rate :Bc tin dao ngang.

Plunge rate :Bc tin xung dao.

Retract rate :bc tin li dao.

Spindle speed :Tc trc chnh.Coolant :Ngui

off:tt ngui.Mist dng sng m.

flood :dng dng chy.

Phm chn Calc. speed/feed :Mastercam s tnh ton cho tabc tin v tc .


12/19

Phm save to library :Lu dng c ct va nh ngha vo thvin ring.Ch ny cc bn c th to cho ring mnh nhiu loidng c ct khc nhau,khi mc cng nh ngha li.

Trn y cc bn c th nhp cc thng s sau y cc thng skhc khng cn thit lm.Rough XY Step. C th mc nhFinish XY step C th mc nhRough Z step C th mc nhFinish Z step C th mc nhfeed rate :200Plunge rate 200Spindle speed 1000flood

Tr li trang surface rough Pocket.Mt dng c ct c to ra.Cc bn c th to ra nhiu daophc v cho cc bc gia cng tip theo,v khng hn l chi titny c th gia cng c bng mt loi dao,m bng nhiu dao.


13/19

Qua trang Surface parameter :cc thng s b mt gia cng.


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Trn trang ny s c nhng thng s sau :

Clearance :Mt phng an ton.L mt phng m sau khi ktthc gia cng ca con dao ,dao s rt v v tr ny.Absolute :Ly theo ta tuyt iIncremental :Ly theo ta tng i.

Tip comp (tip compensation) :cc kiu b dao.Retract :Li dao.Ch nh mt phng li dao sau mi ln chuyndao gia cng lt ct tip theo.Feed plane :mt phng n phi.Hay l mt phng gia cng,ty dao s bt u thc hin gia cng.


15/19

Regen (regenerate )Xut li thng s b mt.

Qua th Rough parameter :Cc thng s gia cng th.

Total tolerance :dung sai tng ca b mt sau gia cng.

Maximum stepdown :Chiu su ct ln nht cho mi lt ctClimb :phay thunConventional :phay nghch.

Hai thng sclimb v conventional cn phi hiu r,khi cn sup hnh ln gii thch,vn ny c nhiu ti liu gii thchnhng cha rng.


16/19

Entry options : Cc ty chn vic vo dao thc hin ct gt kL.Use entry :S dng chc nng vo dao.Align plunge entries for start holes : Chnh hng xung daotheo cc l khoan bt u.

Qua th Pocket parameters :Cc thng s gia cng ti hc.

Phn rough:Cutting methods :Cc phng php ct gt,hay cc kiu chinlc chy dao.Nh hnh hin th,khng gii thch thm phnny.

Stepover percentage phn trm b rng ct ngang so vi ng


17/19

knh dao.spiral inside to outside :Chy xon c t trong ra ngoi.Use quick zigzag :S dng kiu chy zigzag nhanh.Roughing angle :Gc ct th so vi phng X.Finish :gia cng tinh.Nu chn vo y,sau gia cng th s thc

hin lun gia cng tinh bng dao ny.Pass :s lt ct tinh.Cutter compensation :B dao.Lead in/out :thit lp vo v ra dao.

xong th pocket parameter :

Chn OK kt thc hp thoi surface rough pocket.MasterCams thc hin tnh ton ng chy dao trong khong thi gian30s.

V kt qua cui cng


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