3 Axis Surface Machining

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3 AXIS SURFACEMACHINING

ENTER THE SURFACE MACHINING WORKBENCH:Start > Manufacturing > Surface Machining

Phn A:

STOCK(To phi)

I. CREATES ROUGH STOCK :- To phi mt cch t ng cho chu trnh gia cng th. Yu cu phi c mtchi tit Part gia cng trong Workbench.1. V d c 1 chi tit nh sau:

2. Click nt Create Rough Stock ICon. Hp thoi hin ra:


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3. Chn chi tit Part. Mt hp thoi hin ra cha ng gi tr nh nht v lnnht cn c theo to X, Y, Z to hp s bao quanh Part. Hp ny cngc hin th trn mn hnh ho vi ng en m.

- Destination: Chn ni s cha i tng hp Stock c to ra. C thchn trong cy ph h hoc ngay trn mn hnh ho.4. C th iu chnh cc gi tr X, Y, Z nu mun tng thm hoc gim ikch thc Box Stock to ra.

5. C th thay i trc h thng Axis System dng nh ngha Rough Stockbng cch Click vo nt Select an Axis v sau chn:- Mt trc khc.- Mt mt phng Plane khc.- Mt Surface Planar khc.


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6. Click OK hon thnh vic to Stock Rough.

II. INSERTS AN STL FILES :- M mt Files STL vo lm b mt phi gia cng.1. Click nt Inserts an STL file ICon.2. Chn 1 Part.3. Khi trnh duyt Files hin ra. Chn 1 Files STL. Sau Click Open.


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Phn C:

ROUGHING OPERATIONS(Gia cng th)

I. CREATE A SWEEP ROUGHING OPERATION :- To chu trnh gia cng th Sweep Roughing. Sweep Roughing l 1 chu trnhcho php gia cng th chi tit Part bi mt phng Planes thng ng Vertical.1. Chn Sweep Roughing ICon. Hp thoi xut hin:a. Geometry Tab Page: nh ngha thng s hnh hc cho chu trnh giacng.

- Mi vng mu trn ICon ng trong hnh trn c th Click ri chn trctip hoc Right Click vo n v chn cc cng c trong Menu ng cnh hinra.- Part: Vng mu , chn cc b mt Face (Right Click v chn trongMenu ng cnh) hoc chn ton b chi tit gia cng (Click v chn lunchi tit trong mn hnh ho). Part ny c th c Offset on part:imm.- Part Avoid: Vng tng t nh Check, l vng m khi gia cng s cntrnh.- Top/Down: nh ngha cc mt phng cao nht v thp nht. Cc mt phngny s nh ra vng dao s gia cng chi tit. Nu vng no ca chi tit nmngoi vng ny th s khng gia cng.- Check: nh ngha vng kim tra. L vng dao s trnh khng ng vo.- Limiting Contour: nh ngha gii hn gia cng bn ngoi ca chi tit.Cng c th kch hot cng c Part Autolimit v cc Contour gii hn ringl hoc cng nhau nh ngha vng mun gia cng. Trong hnh sau y,

Area to Avoid


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ng mu xanh l cc cnh ca chi tit, chi tit Part mu vng trong vng sc gia cng, ng Line mu en l Limitting Contour.

- Nu s dng Part Autolimit, tt c Part s c gia cng. Nu bn kch hotPart Autolimit, dng c ct s khng vt qua phm vi cc cnh ca Part.- Nu s dng Limitting Contour, ch c vng bn trong Limitting Contourmi c gia cng. Nu mun gia cng vng ngoi Limitting Contour.Chn Outside trong Box Side to machine.

Side to machine: Inside Side to machine: Outside

- Stop Position: V tr Toolpath so vi Limitting Contour. Gm On, Inside,Outside. C th thy qua hnh sau:

ON INSIDE

OUTSIDE- Offset: Limitting Contour s c Offset v Toolpath s tnh ton theovng Contour c Offset.


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b. Machining Parameter Strategy: nh ngha cc thng s cngngh.- Roughing Type: Kiu dao s i.

+ ZOffset : Vi mi lp ct th s l Offset caSurface.

+ Zplane : Mi lp ct th s cng phng.

+ Zprogressive : Mi lp ct th s un theo b mt.- Machining Tab:

Toolpath Style:+ Zig-Zag: Toolpath s i theo ng zig-zag v 2 pha. Pass n ni

tip pass kia. Nh trn 3 hnh trn ca Roughing Style.+ One-Way Next: Toolpath lun theo 1 hng. Sau khi cui ca Pass

ny th s nhc dao nhy n u ca Pass tip theo (u ca Pass tip theocng hng vi u ca Pass trc ).

+ One-way same: Toolpath s lun i theo 1 hng. Khi cui caPass ny, dao nhc ln v di chuyn v u ca pass ny, sau dch dao nu ca Pass tip theo.- Radial Tab:


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+ Max. distance between pass: Khong cch ln nht gia cc Pass

.

+ Stepoverside: Left/Right: Hng bt u gia cng bn tri hay bnphi ca Toolpath.

Right Left- Axial Tab: nh ngha su n dao ca mi lp ct.

c. Macros: nh ngha di chuyn dao theo Macro.

Along Tool Axis Along A Vector Normal

Tangent to movement Back Circular

Box Prolonged Movement


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II. ROUGHING :- Chu trnh Roughing l mt chu trnh cho php gia cng th chi tit Partstheo cc mt phng nm ngang Horizontal Planes.

- Trc ht, hin th m hnh di dng khung dy wireframe .1. Click nt Roughing ICon. Hp thoi xut hin

a. Geometry Tab Pages: Xc nh cc thng s hnh hc cho chutrnh.

- Chu trnh ny buc phi chn Rough Stock chng trnh s tnh tontng quan gia phi v chi tit thc hin tnh ton s lng lp ct cnthit.- Tt c cc thng s Geometry u tng t nh Geometry ca chu trnh giacng Prismatic Roughing Operation. Ch khc thng s Zone Order s ni phn sau.- Imposed Plane: L mt phng dng c ct phi i qua. Nu mun s dngtt c Surface Planar trong Part nh l Surface Imposed, s dng cng cSearch/View trong Menu ng cnh khi Right Click vo Imposed Planetrn ICon ng. Sau khi hp thoi hin ra, Click nt All Planes tm tt ccc Surface Planar hoc Click nt Reachable Planes tm cc SurfacePlanar c th vi ti c.

Sau khi c kt qu, Click chn cc Surface trong danh sch v Clickcc nt mi tn chn hoc xo b chn. Cc Surface khi c Click vo ssng ln trn mn hnh ho hin th cc Surface Planar .


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- Tool/Rough Stock:

+ Position: nh ngha v tr ng ca tm dng c ct so vi phi th.Gm Inside/Outside/On.

+ Offset: nh ngha khong cch dng c ct vt qu v tr. N thhin bng % ca ng knh ca dng c ct. Thng s ny hu dng trongtrng hp c cc o gn cnh ca Part v ng knh dng c ct qu rngcho php vng sau ca o b ct phi. Thng s ny ch s dng khi Positionl Outside hoc l Inside.

+ Minimum thickness to machine: nh ra chiu dy vt liu nh nhts c ct gt khi s dng Overshoot (Vt qu) hoc trong chu trnh giacng li Rework.

+ Force Replay: S dng cho chu trnh gia cng li ReworkingOperation. N s tnh ton phn phi th cn li t chu trnh trc n. Sdng n trong chu trnh Reworking Operation trc khi Click Replay mphng.b. Machining Parameter Strategy: Thng s cng ngh.- Machining Tab:

+ Machining Mode: gii thch phn Prismatic Milling.


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+ Toolpath Style : Kiu ng Toolpath chydao, kiu ng c chn s p cho tng th cc vng trn Part khi gia cngth.

* Spiral: Dng c di chuyn gia cng ng tm theo hnh xoyc theo ng bao ca vng c gia cng.

* Helical: Dng c ct di chuyn gia cng theo cc Pass ngtm t ng bao ngoi ca vng gia cng v pha bn trong.

S khc nhau vic chuyn t pass ny sang passkia.

* Contour Only: Ch gia cng xung quanh Contour ngoi caPart.

* Concentric: Dng c ct lin tc ct gt lng vt liu ln nhtc th ti mi Pass trn ng tm. Dng c ct s khng bao gi tc ng trctip n li ca vt liu. N cng c kha cnh a kiu Cut trong tt c cctrng hp. Kiu n dao Approach Mode lun lun l kiu Helix.

+ Distinct Style in Pocket: nh kiu Toolpath ring cho gia cng cchc Pocket ca Part. Khi gia cng Part, Toolpath s thc hin kiu ToolpathStyle trn, tuy nhin nu kch hot Distinct Style in Pocket th khi gia cngn cc hc Pocket ca Part th kiu gia cng chn trong Distinct Style inPocket s thc hin cc hc , cn bn ngoi hc vn thc hin chy daotheo kiu Toolpath Style.

+ Helical Movement: nh ngha kiu di chuyn ca dng c ct trong1 hc hoc mt vng bn ngoi. N c th l:

Inward: Dng c ct bt u t 1 im pha trong khu vc vtheo hng vo trong song song vi ng bao.

Outward: Dng c ct bt u t 1 im pha trong ca khu vcv theo ng dn hng ra ngoi, song song vi ng bao.

Both: Trong hc, dng c ct nh l kiu Outward, cn bnngoi zone th theo kiu nh Inward.

Inward Outward Both


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+ Always Stay on bottom: Cng c ny c th c s dng khiToolpath style l Helical hoc Concentric. Khi chn kim cng c ny, ngni Linking Path gia 2 vng s nm trn mt phng gia cng hin thi. iuny th hin 2 hnh di y:

Check Uncheck+ Part Contouring: S dng khi Toolpath Style l Zig-Zag. Vi cng

c ny c kch hot, dng c ct i gia cng xung quanh cc ngContour bn ngoi ca Part trc khi tip tc gia cng Zig-Zag. Ngng kchhot cng c ny cho php gim thi gian gia cng. Hnh sau minh ho khicng c ny khi bt v khi tt.

Vi Part Contouring: Check, ti mi lp Cut, u tin dao s di chuyntheo ng Contour bao quanh vng ct, sau dao s chuyn ng Zig-Zag gia cng phn vt liu ti vng gia cc ng ct Contour trc nhbnh thng.

Vi Part Contouring: Uncheck, th s Cut nh bnh thng, dao s chytheo ng Zig-Zag lun ct vt liu.

- Axial Tab: Nhp chiu su ln nht ca mi lp gia cng.


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+ Variable cut depths: Nhp cc lp ct thay i dao s thc hinth t theo cc lp ct c chiu su thay i . Gi tr nhp s theo vng su. V d t Top ca Stock n su 15mm, Cut Depth l 2mm;

- Zone Tab:

+ Small pass filter : nh ngha vng nh nht gia cngtheo dng c s dng (%).

+ Pocket filter: Chn cng c kch hot cng c. Sau nhp ToolCore Diameter (%). Khng phi Pocket no cng c gia cng nu nkhng su cho dng c ct i xung. Mt gi tr rng ngha l dng c ctcho php i xung c hc Pocket. Kch c Pocket nh nht c a rapha di.- Bottom Tab:

+ Automatic horizontal areas detection: Khi kim ny c chn, l con ng duy nht chc chn rng cc mt phng ct tng ng vi 1vng nm ngang c nh ngha cho Imposed Plane ct qua vng . Nghal bn phi tnh ton n Offset ca Part. Plane ny p t cho tt c cc Part(nhng th l khng tt nhin). Nu c vi vng nm ngang c tnh ton ticc lp khc nhau bn phi nh ngha tt c theo cc Imposed Plane.


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Chn kim cng c ny :+ Nhn t ng cc vng nm ngang trn Part.+ Gii hn mt phng Plane ct tc ng n vng .+ p t mt Offset chuyn dng trn Part cho vng .

Sau khi nhp gi tr ca Offset p cho vng (Offset on areas) vnh ngha gc ln nht Maximum Angle c th c coi nh l nm ngang.Gc c o vung gc vi ng dng c.

+ Same Offset on bottom as on Part: Offset on Area trn Part v trnBottom ging nhau cho vng gia cng.

Check On Check off- HSM Tab:


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+ To vic phay tc cao, gip tic kim thi gian. Chn kim vnhp bn knh cho gc.

Check Off Check On.V d sau s minh ho r hn:

Khng dng HSM.

C dng HSM.

Retract khi khng dngHSM.

Retract khi c dng HSM.ng Retract s ngn hn rt nhiu. Tic kim thi gian hn.- Macro Tab:

+ Optimize retract: Ti u ho s li dao. Ngha l khi dng c dichuyn trn Surface ni m khng c s cn tr, n s khng i ln cao nmt phng Safety Plane bi v khng c s nguy him ca s va chm dngc ct. Kt qu l c li v mt thi gian. Trong mt vi trng hp (ni m 1vi vng no ca chi tit cao hn vng gia cng v khi s dng SafetyPlane ), dng c ct s ct vo chi tit. Khi iu ny xy ra, ngng kch hotcng c ny.


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- Axial safety distance: Khong cch ln nht dng c ct s i ln khi dichuyn t cui ca 1 Pass n bt u ca pass tip theo.- Mode: Kiu vo khp ca dng c ct n vt liu.

+ Plunge: dng c ct n theo chiu thng ng.+ Drill: Dng c ct lao xung theo h khoan.+ Ramping: Dng c ct di chuyn xung theo gc nghing. c p

t cho cc hc nhng cng bn ngoi vi iu kin sau: Nu 1 limit linec s dng, dng c ct s n dao vng ngoi ca chi tit v hc trong kiuRamping; Nu n dao bn khng kh thi (do i tng check), n dao ctheo kiu Ramping Mode.

+ Helix: Dng c di chuyn xung vi gc nghing v theo mt ngxon.

Nu Toolpath Style l Concentric, Approach lun lun l Helix.

III. ROUGHING - ORDERING ZONES:- Thit lp th t cc vng trn Part s c gia cng trc sau. Cc vngZone c th l Pockets hoc l vng ngoi ca Part.1. Click Roughing ICon .


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2. Click vng mu Part v chn tt c Part cn gia cng.

3. Click vng mu nht Zone order.

- Chn cc vng s c gia cng bng cch Click trn cc face, .

- Click Replay. Cc vng Zonei s c gia cng theo ng th t m chngc chn.


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4. to mt chu trnh khc nhng li mun gia cng vi cng kiu OrderedZones. Right Click vo Ordered Zone trong Geometry Tab v Click voMachine only ordered zones trong Menu ng cnh hin ra.

Phn D:

FINISHING AND SEMI-FINISHING OPERATIONS(Cc chu trnh gia cng tinh v bn tinh)

I. SWEEPING :- Sweeping Operation l chu trnh gia cng bn tinh v gia cng tinh v cs dng sau khi Part c gia cng th v gia cng tt c Part. Toolpathsc thc hin trong mt phng Plane song song Parallel thng ng Vertical.1. Click nt Sweeping ICon. Hp thoi hin ra:

a. Geometry Tab Page:

Cc thng s tng t nh trong chu trnh gia cng Sweep RoughingOperation.

b. Machining Parameter Strategy Tab Page:- Machining Tab:

+ Reverse Toolpath: o chiu Toolpath. Nh hnh minh ho diy:


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No Check Check On+ Max Discretization: Mt s Surfaces, nh l Surface Flat phng,

dng c ct c th i qua t mt s im b thiu. Bi vy khi kch hot cngc ny v nh bc Step th khong trng c th c in y bi cc im trn Surface chnh xc, kt qu l Toolpath s trn hn v vic gia cng ccht lng hn.

Uncheck CheckVi cng c Distribution Mode dng iu khin v ci thin cht

lng b mt gia cng Surface Machining. C 2 gii php ca cng c ny c

th c chn la l Aligned v Shifted .Vi Aligned (ging), cc im ca Toolpaths c ging (nh l gii

php tt nht c th) vi Toolpaths di v trn. Nh hnh minh ho sau:

Vi Shifted (x dch, thay i), cc im ca Toolpath khng nh hnhtrn 1 ng thng vi Toolpaths trn v di. Nh hnh minh ho sau:

Parameter ny ch cho php vi dng c ct Dao Phay dng mi cu.S im ca Toolpaths s bin i theo Distribution Mode.

+ Plunge Mode: Kiu dao m xung cho kiu Toolpath Style l One-way.

Step


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* No Check : Dng c ct c th i xung v i lntheo Surface.

* No Plunge : Dng c ct s khng i xung theoSurface.

* Same Height : Dng c ct khng i xung nhng skhng dng li khi n gp mt nh, chp.- Radian tab:

+ Stepover : 2 dng:* Constant: Khong cch dch dao gia cc Pass trong mt

phng l c nh.

* Via Scallop height: Bc dch dao gia cc Pass ph thucvo chiu cao Scallop bn chn. Bn cng c th nh ngha khong cch lnnht v nh nht c th c gia cc Pass tng ng vi Scallop bn nhngha.


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* Scallop Height : Chiu cao ln nht cho php cavy vt liu cha li khng ct gia cc ng dch dao sau khi gia cng.

Ch vic nhp trc hay sau ca cc thng s khong cch v Scallops c th dn n cc kt qu khc nhau; hoc cc d liu trn khng choc c th c lin thng tnh ton quan h vi nhau tu iu kin. Nn ch trnh ng nhn.

+ Collision Check: Ch c kch hot khi s dng chiu trc chnhOther kim tra s va chm. Khi c bt, tt c cc im thuc v cndng c ct c va chm vi Part s c hin th trn Toolpath.- Axial tab: Nhp cc gi tr su Depth cho cc lp gia cng.

Multi-Pass:

+ Maximum cut depth & Total depth : Nhp tng chiu suv chiu su ln nht cho 1 lp ct. Chng trnh s t ng tnh ton s lpLevel cn tng ng.

+ Number of levels & Total depth : Nhp s lp vt liucn ct v tng chiu su gia cc lp. Chng trnh s t ng tnh tonchiu su ln nht ca mi lp Cut theo 2 d liu trn.


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+ Number of levels & Maximum cut Depth : Nhp s lpct v chiu su ln nht gia cc lp. Chng trnh s tnh ton chiu sutng cng ca tt c cc lp.- Zone Tab:

nh ngha cc phn ca Part hoc vng gia cng m mun gia cng.

+ All : Tt c cc Surfaces s c gia cng.

+ Frontal walls : Ch Surface thuc mt trc ca Part

c gia cng. Gi tr Min.frontal slope l gi tr gc nh nhtgia trc dng c ct v Surface Part Normal m da vo Surface cth c coi hay khng c coi l Frontal walls.

+ Lateral walls : Ch Surface bn ca Surface c

gia cng. Gi tr Min.lateral Slope l gi tr gc nh nht giatrc dng c ct v Surface Part Normal m da vo Surface c thc coi hay khng c coi l Lateral walls.

+ Horizontal : Ch c Surface nm ngang mi c gia

cng. Gi tr Min.horizontal slope l gi tr gc nh nht giatrc dng c ct v Surface Part m da vo Surface c th c coihay khng c coi l Horizontal Area.- Island Tab:


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Chn kim Island Skip nu mun dng Approach v Retracts trung gian (l ng link ni gia vng khc nhau gia cng 1 cch lin tc 2 vng cng lc v khng bt u v cng khng kt thc ca ng Toolpath).

+ Island Skip Check : Hnh 1

+ Island Skip UnCheck : Hnh 2

Hnh 1 Hnh 2+ Direct: Khi Check, dng c ct khng cho php i ln theo Approach

v Retract trung gian. Khi Uncheck, dng c ct s i ln 10mm trnApproach v Retract trung gian.

Direct Check Direct Uncheck

+ Feedrate Length : Khong cch khng thuc Toolpath thngs thay th bi Approach v Retract trung gian. Trong hnh di y, di


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Feedrate Length s c thit lp l 45mm. Ch rng khong trng l nhhn 45mm ct qua bi ng thng Toolpath v n ln hn 45mm ct quaToolpath trung gian tiu chun vi Approach v Retract.

II. ZLEVEL MACHINING :- Chu trnh gia cng Zlevel l chu trnh gia cng tinh hoc bn tinh, chu trnhny gia cng tt c Part bng cc mt phng Planes song song nm ngangvung gc vi trc dng c ct Tool Axis.1. Click nt Zlevel ICon. Hp thoi hin ra:a. Geometry Tab Pages:- Tng t nh chu trnh Sweep. Tuy nhin cn ch mt iu l nu chnvng gia cng l theo kiu Select Faces trong Menu ng cnh hin ra khiRight Click vo vng mu Part trn ICon ng sau chn 1 mt Facesn v khng s dng cng c Part Autolimit, dng c ct s gia cng c 2pha ca Face. Nu s dng Part Autolimit, dng c ct s dng khi n vnti cnh ca Face (nh hnh di y):

b. Machining Parameter Strateg Tab Page:

+ Machining Mode: nh ngha kiu vng gia cng.

By Plane Pocket Only Outer Part Outer Part & Pockets+ Pass Overlap: Chiu rng ca phn ln nhau ca cui ca 1 pass

trn phn u ca n (pass ).


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2. Gi Menu ng cnh ca vng mu Part trong Geometry Tab. ChnSelect Faces chn cc Faces tht lng xung quanh bn ngoi ca Part.

- Click OK xc nhn.3. Click Replay. Nh vy bn ngoi ca Part c gia cng.

III. CONTOUR - DRIVEN MACHINING :- To chu trnh gia cng mt vng trn 1 chi tit bng cch s dng Contournh l ng dn.- Cc Geometry Tab Page v Machining Parameter Strategy Tab Page ccc thng s tng t nh cc chu trnh gia cng tinh trnh by trn.C 3 kiu chu trnh gia cng Contour Machining. Vo Machining ParameterStrategy Tab Page . Trong phn Guiding Strategy:

1. Parallel Contour:- Toolpath qut mt vng to cc Pass lin tc vi xa tng dn (hoc gndn) so vi pha c 1 ng Contour lm ng dn, cc Pass Toolpath l ccoffset song song vi ng Contour dn.- Trong Machining Parameter Strategy Tab Page, Click chn ParallelContour. Click Strategy Tab.- Trn ICon ng, Click vo Guide 1 v chn 1 Contour trn mn hnh ho. s l ng Contour Guide m cn c vo s to ng Toolpathgm nhiu Pass lin tc song song vi ng dn Contour Guide , mi


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ng cch nhau 1 khong cch nht nh v vng c Toolpath s cchContour Guide 1 khong cch yu cu theo nh ngha.

- Pencil Rework: Cho bn bt u mt chu trnh Pencil t ng (nh nghathit lp thng s mc nh) ti cui ca chu trnh Contour Driven. y lchu trnh gia cng li ti cc v tr gia cng cn tha vt liu nh gcCorner, .Nu chn Without th s khng to chu trnh Pencil Operation ticui chu trnh Contour Driven, cn nu chn With th s to ra chu trnh giacng Pencil Operation. C th thy qua 2 hnh sau:

With WithoutC th thy, vi la chn Pencil Rework l With th ta thy trn hnh

xut hin cc ng Toolpath gia cng li cc gc v cc ng gc ca hctrn hnh. Cn vi la chn l Without th khng h c.


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- Offset on Contour: Khong cch dng c ct s l t ng Contour Guidedn bt u t ng Contour Guide ti v tr bt u chu trnh. Nh hnhsau:

- Maximum width to machine: nh ngha chiu rng ca vng gia cng btu t Contour Guide.

- Step Over Side: nh ngha pha vng s gia cng (tri Left hoc phi Rightca ng Contour Guide).- Direction: Hng ca Pass ca Toolpath. To Contour ngha l Pass u tinca chu trnh gia cng s v tr xa Contour Guide nht, v dao s bt u giacng ng Pass v cc ng pass tip theo s hng v pha ContourGuide. From Contour th ngc li, dao s bt u gia cng ng Pass thnht ti Contour Guide v cc Pass tip theo s i ra dn Contour Guide.- Initial Tool Position: V tr ni m dng c ct s bt u so vi ngContour. Gm On/To/Past.

2. Between Contours:

Offset on Contour

Contour GuideMaximum Width to Machine


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- Dng c ct qut gia 2 ng Contour Guide dc theo Toolpath c c tvic ni suy gia 2 ng Contour Guide. Cui ca mi Pass nm trn 2 StopContour.- 4 Open Contours (C th khng cn thit phi kt ni hon ton tt cchng). Dao s gia cng qut qua vng gia 2 Contour Guide. Guide 1 vGuide 2 l 2 Contour gia chng s c gia cng. Stop 1 v 2 l gii hn giacng ca cc Machining Paths.

- 4 Points on Closed Contour: P1, P2, P3, P4 l 4 im la chn trn Contourtrong vng s c gia cng. Lu Click vo ng Contour trn IConng v chn Contour kn trn mn hnh ho.

- Stepover: Constant on Part: Khong Stepover vi cc khong cch khngi trn Part; Maximum on Part: Khong Stepover vi mt khong cch giacc pass phi c lu .

+ Distance : Khong cch c nh gia cc Pass k tip nhau.+ Sweep strategy: nh ngha ni bt u gia cng v ni kt thc, c

cc kiu l:

* From Guide 1 to Guide 2 : Bt u ti Guide 1 vkt thc ti Guide 2.


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* From Guide 2 to Guide 1 : Bt u ti Guide 2 vkt thc ti Guide 1.

* From guide to Zone Center : Bt u t Guide tinv tm khu vc .

* From zone center to Guide : T tm khu vc giacng tin ra cc ng Guide.

* From guide to zone center (Spiral) : T Guide tinvo tm vng gia cng theo ng xon Spiral.

* From zone center to guide (Spiral) : T tm vnggia cng tin ra cc ng Guide theo ng xon Spiral.- Reference: nh ngha ni im cui dng c ct hoc im tip xc cadng c ct c s dng trong tnh ton.

- Position: nh v tr ca dng c ct so vi ng Guide Contour(Inside:Pha trong; Outside: Pha ngoi; On: Trn).

- Offset : Offset dng c ct so vi Contour Guide. Vi gi troffset m, Toolpath s bt u bn ngoi ca ng Contour Guide, vi 1 gitr dng n s bt u ti pha trong ca ng Contour.


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- Collision check: Khi trc khc Other Axis c kch hot, s dng checkBox kim tra s va chm phn ga kp dao ca dng c ct Toolholder.

3. Spine Contour:

- Chn 1 Contour trn Part lm tham kho cho chu trnh gia cng. Cc Passs c to trn vng chi tit tng ng vi Contour nm trn , tuy nhincc Pass s giao ct vi ng Guide Contour theo phng vung gc. Mts vng m ng Guide Contour khng ti th s khng c c ng Passgia cng. Nh hnh sau:

IV. CONTOUR - DRIVEN MACHINING - STEPOVER STRATEGY :- Hng dn to chu trnh gia cng mt phn nh ca mt chi tit Part.1. Click nt Contour - Driven ICon. Hp thoi xut hin:2. T Geometry Tab Page, Right Click vo vng mu Part trn ICon ngv chn Select Face. Sau chn mt Face trn chi tit Part.

3. Vo Machining Parameter Strategy Tab Page. Chn Between Contours.4. Vo Radial tab, chn Constant on Part trong Stepover List v chn GuideContour v Stop Contour nh hnh sau:

5. Thay i Distance = 5mm.


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6. Chn From guide 2 to Guide 1 v Click nt Replay.

- Nh vy th khong cch t cc ng pass l bng nhau.7. Vi cng thng s trn, chuyn Stepover thnh Maximum on Part v Clicknt Replay.

- Ta thy c s thay i khong cch gia cc Pass.

V. ISOPARAMETRIC MACHINING :- Chu trnh ny l chu trnh cho php chn cc Strips(di, mnh) ca ccFaces v gia cng chng dc theo cc ng cong tham s ca b mt.1. Click nt Isoparametric Machining ICon. Hp thoi hin ra.

Geometry Tab Page:

- Part: Click vo vng mu trn ICon ng v chn cc mt cn gia cngtrn View. Vng ny bt buc phi chn.- Points on Part: nh ngha hng ca Isoparametric.


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- Collision Checking: Thc hin kim tra i tng Part v Check vi kiuOn Tool Assembly (kim tra va chm c ca li ct ln gi kp dao ca dngc ct vi cc phn khc) hoc l On Cuttiong Part of Tool (ch kim tra vachm phn li ct). tic kim thi gian tnh ton, nn s dng On ToolAssembly ch khi dng hnh hc c kim tra c th cn tr phn trn cadng c ct.

- Part Tab: Thng s kim tra va chm vi chi tit.+ Active: Kch hot kim tra va chm Collision trn i tng chi tit

Part, bn phi chn kch hot Active checkbox. Ci ny hu dng vi trnghp gia cng chi tit lm (Concave) vi kiu trc dng c khng i FixedTool Axis Mode hoc mt lm v khng phay trn chi tit vi kiu trc dngc 00 Lead Angle. Ch cng c Allowed Gouging, Part phi c thit lpgi tr khc 0, nu khng th mt thng bo "Nothing to Mill" c th s xuthin.

Vng gia cng lmVic kim tra va chm c th khng cn thit trong trng hp sau:

Vng gia cng l li vi dao phay hnh trn Ball, phng Flat hoc Filletedhoc vi kiu trc dng c la chn l c nh Fixed hoc trc dng c ctthay i;

Hoc l vng gia cng lm vi kiu 00 Lead Angle. Mt thng bo"Nothing to Mill" s xut hin.


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+ Accuracy: chnh xc sai lch ln nht chp nhn c tng ngvi Part (hoc Check) so vi chiu dy ca n.

+ Allowed Gouging: Gi tr Interfernc (giao thoa, nhiu) ln nht vichi tit Part (hoc Check) trong lc dng c ct di chuyn theo Macro.- Check Tab: Thng s kim tra s va chm vi Check (cc vng khng cth vo).

+ Accuracy( chnh xc): nh ngha sai lch ln nht c th chpnhn tng ng vi g v Offset ca n. Thit lp thng s ny to gitr ngn nga ng dng nhiu trong tnh ton thi gian hon tt s chnhxc khng cn thit.

+ Allowed Gouging: Gi tr Interfernc (giao thoa, nhiu) ln nht vi g trong lc dng c ct thc hin chuyn ng "Lingking passes" (gmc chuyn ng n dao Approach v chuyn ng rt dao Retract Motion).

Minh ho chuyn ng quay li khng cMacro hoc nhy Jump.


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Minh hochuyn ng quay li c Macro giaPath v g.Lu : Dng c ct s lun lun bt u trn im Point 1 v kt thc Point4. Ngha l nu cc tham s ca bn thit lp theo 1 cch, tnh hung phptuyn di, Toolpath s cui cng trn im th 3, Toolpath s tnh tontheo cch chc chn rng n kt thc im Point 4. lm iu ny th 5Pass cui cng c th c ng kn vi nhau hn nhng Pass khc (khong20%).2. Click vo vng Part mu trn ICon ng v sau chn Faces trongmn hnh ho.

- Ch rng cc Face phi kt ni vi nhau.3. Click vo cc im mu trn ICon ng v sau Click chn 4 imgc ca Part Surface. Part Surface v cc im gc ca ICon ng by gichuyn thnh mu xanh.

4. Thit lp cc thng s cng ngh gia cng:

Machining Parameter Strategy Tab Page:- Machining Tab:


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+ Max discretization step : Vi 1 vi Surfaces, nh lSurface phng flat, Toolpath c th b thiu 1 s im. Thit lp gi trkhong cch ln nht ny, cc khong trng trn Toolpath s c thm vobng cc im chnh xc trn b mt Surface v phn phi cc im tt hn,to ra c Toolpath trn hn v cht lng gia cng cao hn.

+ Max discretization Angle : Gc ln nht gia ccim lin tip trn Toolpath Machine t c.- Radial Tab:

+ Skip Path: Chn b qua pass u tin First hoc pass cui

cng Last ca Toolpath hoc b qua c 2 ci First & Last

hoc khng b qua ci no None .


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+ Start Extension : nh ngha chiu di thm vo ca 1vng gia cng pha trc Pass u tin ca chu trnh. Gi tr c th l m hocdng.

+ End Extension : nh ngha chiu di thm vo ca 1 vnggia cng pha sau Pass cui cng ca chu trnh. Gi tr c th m hoc dng.- Axial Tab:

Kiu trc dng c ct khi gia cng Tool axis mode:

+ Fixed axis : Hng trc dng c ct c hng c nhtrong sut chu trnh.

+ Interpolation with :

* Allowed tilt angle (cho php c nghing vi gcnghing): Trc dng c ct ni suy gia 2 trc c chn. y, Click vocc mi tn trn ICon ng trn hp thoi v chn 2 mt Surface xc nhphp tuyn ca chng, hng trc dng c ct l hng vct tng ca 2 phptuyn.

+ Lead and tilt with : Hng trc dng c ct s phptuyn (hoc nghing vi php tuyn) vi b mt ti v tr dao ang di chuyn.


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* Gc ch Lead c th c nh Fixed hoc thay i trongvng no ; hoc c th c nghing gc Tilt Angle no .

+ Optimized lead with : Ti u ho hng trc dng c ctthng gc vi Surface ti v tr dng c ct gia cng gia khong gi tr gcch Lead ln nht v nh nht, chng trnh s chn v ti u gc Lead trongkhong ; ng thi vo l nh ra gi tr nhc gt nh nht cho php ca

dao khi nghing theo gc Lead l Min Hell Distance .Ti u ho gc ch Lead lm vic nh sau: Gc Lead nh ngha nh

nht sao cho kht vi cong ca Part; Gc Lead tng ln nu cn thit ph hp vi khong gi tr nhc gt chn nh nht Minimum heel distance.

+ 4-Axis lead/lag with : Trc dng c ct s php tuynvi Part Surface ph hp vi gc ch Lead Angle hng v pha trc vrng buc vi 1 mt Plane nh ngha (Click vo Plane trm ICon ng vchn mt mt Face to php tuyn ca n). Hng ca trc dng c ctc tnh ton ging nh kiu Lead and Tilt Mode v sau chiu ln mtrng buc Constraint Plane.

+ 4-Axis Tilt with :

* Tilt Angle :

+ Thru a point : Trc dng c ct s lun phi i qua 1im nh ngha (Click im trn ICon ng v chn 1 im).


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+ Normal to line : Trc dng c ct s lun lun phivung gc vi 1 ng thng line nh trc (Click vo line trn ICon ngv chn 1 line trong mn hnh ho).Guidance: iu khin cc gi tr gc ca cc kiu Tool Axis Mode trnhby trn. Ch c 1 s chu trnh c la chn ny:

+ Fixed lead and tilt : Gc ch Lead nh ngha v gc nghingTilt nh ngha c nh khng i.

+ Variable lead and fixed tilt : Gi tr gc Lead Angle thay it Min n Max v gc Tilt Angle khng i.

+ Fixed lead and Variable Tilt : Gi tr Lead Angle khng iv gc Tilt Angle thay i.5. Click Replay:

VI. SPIRAL MILLING :- Chu trnh Spiral Milling (phay xon c) gia cng rt tt Surface m khngcn s dng nhng dng c ct nh c bit. N a ra nhng kt qu cbit cho vng tng i phng. S dng kiu chu trnh ny ti u ho thigian gia cng bng cch gim bt StepOver.1. Click nt Spiral Milling ICon. Hp thoi xut hin:- Chn thng s hnh hc cho chu trnh ti Geometry Tab:

2. Thit lp cc thng s gia cng Machining Parameter Strategy :- Machining Tab:


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ICon ng.+ Horizontal zone selection: La chn vng gia cng Zone nm ngang.

C 2 kiu: Automatic (Cc Surfaces coi nh l nm ngang tngng tho mn gc ln nht cho php c t ng chn gia cng); Manual

(Mt ng mu hin ra trn ICon ng. Click n v chn SelectContours v chn cc Contour, edge (phi khp kn) trn Viewer nh ravng gia cng, la chn ny s tnh ton ton b cc Surface bn trong vnggia cng gia cc Contour, edge d Surface c nm ngang hay l khng.C th nh ngha nhiu Contour, edge khp kn - nu chn 1 Contour, edgekhp kn bn trong 1 Contour, edge khp kn khc th ch vng gia 2Contour,edge khp kn mi c gia cng).

+ Offset on Contour : Contour s c Offset v vng gia cngs l vng Contour Offset.- Radial Tab:

- Axial Tab:


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+ Sequencing: Xp th t gia cng. C 2 dng l: By Zone

; By Level .

Phn E:

REWORKING OPERATIONS(To chu trnh gia cng li)

I. CREATE A PENCIL OPERATION :- Chu Pencil Operation thng c dng gia cng phn nh giao ct ca2 Surfaces c b li bi chu trnh gia cng trc.

1. Click nt Pencil ICon. Hp thoi xut hin ti Geometry Tab Page .- Chn cc thng s hnh hc tng t nh cc chu trnh gia cng khc.2. Thit lp cc thng s gia cng khc trong Maching Parameter Strategy

:

Machining Tab:- Axial Strategy: Thng s theo chiu trc.


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+ Axial Direction: Hng u tin ca trc dng c ct dc theo trc

ca n. N c th ln UP hoc DOWN hoc Either

.

+ Minimum Change Length : Khong cch nh nht cho sthay i hng trc Axial Direction hoc kiu Cutting Mode. V d, nu 1phn ca Pass l ngn hn gi tr ny, dng c ct s b qua n v tip tcchuyn ng nh c, cng hng (Same direction) hoc cng kiu Mode.- Radial Strategy: Thng s hng knh.

+ Minimum Change Length : Khong cch nh nht cho sthay i kiu Cutting Mode. V d, nu 1 phn ca Pass l ngn hn gi trny, dng c ct s b qua n v tip tc chuyn ng nh c, cng hng(Same direction) hoc cng kiu Mode.Axial Tab: Thit lp cc thng s lp ct nh chiu su, ct, s lp, chiu sumi lp, ct theo tng vng hoc ct theo lp.

THE END


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MC LC

STOCK ...........................................................................................................86I. CREATES ROUGH STOCK : .........................................................86

II. INSERTS AN STL FILES :...........................................................88ROUGHING OPERATIONS.......................................................................89I. CREATE A SWEEP ROUGHING OPERATION :.........................89

II. ROUGHING :................................................................................93III. ROUGHING - ORDERING ZONES: .................................................100

FINISHING AND SEMI-FINISHING OPERATIONS ..........................102I. SWEEPING :...................................................................................102

II. ZLEVEL MACHINING :...........................................................108

III. CONTOUR - DRIVEN MACHINING : ...................................109IV. CONTOUR - DRIVEN MACHINING - STEPOVER STRATEGY :...................................................................................................................114V. ISOPARAMETRIC MACHINING : .............................................115VI. SPIRAL MILLING : .....................................................................122

REWORKING OPERATIONS .................................................................124I. CREATE A PENCIL OPERATION :.............................................124

3 Axis Surface Machining

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Transcript of 3 Axis Surface Machining