BÀI GIẢNG GIA CÔNG CNC & TACH KHUON VOI CREO 2.0

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Transcript of BÀI GIẢNG GIA CÔNG CNC & TACH KHUON VOI CREO 2.0

Training CAD/CAM/CAE/CNC

Creo Parametric

PHN 1: LP TRNH GIA CNG KHUNI. GII THIU CHUNG Modul Manufacturing/ NC Assembly cho php bn to ra cc gi liu cn thit iu khin cc my CNC, c cc phng php gia cng sau. - Lp trnh gia cng Phay (Mill): 3 Axis (default), 4 Axis, or 5 Axis. - Lp trnh gia cng tin (Lathe): 1 Turret (default) or 2 Turrets. - Lp trnh gia cng Phay v Tin (Mill /Turn): 2 Axis, 3 Axis, 4 Axis, or 5 Axis (default). - Lp trnh gia cng ct dy Wire EDM: 2 Axis (default) or 4 Axis. Vi Manufacturing/ NC Assembly thc hin cc nhim v sau -Thit k hoc chn chi tit t phn mm khc. -Thit k quy trnh cng ngh v thng s gia cng. -Hiu chnh qu o v kin tra chy dao. -M phng chuyn ng kim tra ng chy dao (Screen Play v NC Check) -Hiu chnh xut file NC ph hp vi my CNC.

-Xut file CNC v hiu chnh chng trnh. II. Giao din mi trng Manufacturing 1. Giao din mi trng lm vic Creo Modul NC Assembly

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Training CAD/CAM/CAE/CNCIII. Quy trnh lm vic vi Modul NC Assembly

Creo Parametric

Cc khi nim trong Modul NC Assembly Operation : Nguyn cng, Thc hin cho 1 ln g NC sequence. Bc, mt phn ca nguyn cng IV. Trnh t thc hin lp trnh gia cng CNC B1: Nhp chi tit cn gia cng. B2: Nhp hoc to Phi cn gia cng. B3: Thit lp thng s cng ngh (NC, My, Trc ta , g, Mt phng li dao) B4: To dng c ct. B5: Chn phng php gia cng. B6: Thit lp thng s ch ct gt. B7: nh ngha i tng cn gia cng. B8: M phng qu trnh gia cng. B9: Hiu chnh li thng s Parameter nu cn. Gv-Ks: Nguyn nh Thng_0984499008 Page | 2

Training CAD/CAM/CAE/CNCB10: Hiu chnh my xut chng trnh CNC. B11: Xut chng trnh gia cng CNC. B12: Hiu chnh chng trnh CNC. V. Cc phng php gia cng phay trong Modul NC Assembly 1. Face: Phay mt phng phi t trn xung.

Creo Parametric

2. Volume Rough: Phay th tch. Phay tng lp iu khin 2.5 trc ct vt liu t mt th tch. 3. Roughing: Phay tc cao, tt c lp vt liu c ct nm bn trong bin dng Mill Window. Gia cng High-Speed. 4. Re-rough: S dng gia cng li (gia cng bn tinh hoc gia cng tinh) m trc phng php gia cng Roughing hoc Reroughing khng th t c. Gia cng High-Speed. 5. Finishing. c s dng gia cng tinh chi tit ca tham chiu Part sau cc phng php gia cng Roughing hoc Reroughing. Gia cng High-Speed. 6. Corner Finishing. Phay 3 trc. gia cng tinh t ng cc gc v rnh nh m cc bc trc gia cng khng t c bng dao u trn. 7. Plunge Rough: Phay th kiu khot 2.5 axis. 8. Local Milling: Phay cc vt liu cn st li NC trc Volume, Profile (thng s dng Tool nh hn). 9. Surface Milling: Phay nhng mt cong, nghin. iu khin 3 n 5 trc. 10. Cutline Milling: iu khin 3-5Axis, gia cng cc b mt m ng chuyn ng chy dao gii hn bi cc ng Cutline. 11. Swarf Milling: iu khin 5 Axis, chuyn ng dao theo mt lot phng ngang hoc cc mt phng nghing bng pha bn dng c ct. 12. Profile Milling: Phay cc mt bn ng hoc nghing. iu khin 3 n 5 trc. 13. Pocketing: Phay hc iu khin 2.5 trc. gia cng cc thnh ng, ngang hoc cc mt nghing. 14. Trajectory: Chuyn ng chy dao theo ng dn, iu khin 3 n 5 trc. 15. Custom Trajectory. nh ngha ng chy dao t 3 n 5 trc theo ng dn bng cch tng tc xc nh theo qu o in iu khin ca dng c ct. 16. Engraving: Khc ch, to hoa vn trn b mt bng cch chuyn ng dao dc theo i tng Groove cosmetic hoc theo 1 ng Curve. 17. Thread Milling: Chuyn ng chy dao theo ng xon c 3 Axis. 18. Drilling: Khoan l, ta r. 19. Round and Chamfer: iu khin 3-5 Axis. Bo trn v vt dc theo cc cnh. Gv-Ks: Nguyn nh Thng_0984499008 Page | 3

Training CAD/CAM/CAE/CNCVI. Hiu chnh my xut chng trnh CNC

Creo Parametric

VII.

Xut chng trnh CNC v hiu chnh chng trnh.

Xut chng trnh v hiu chnh chng trnh l khu cui cng cng l khu quan trng nht kt thc 1 qu trnh, hon thin chng trnh CNC i hi ngi hc phi nm vng b mn CAD/CAM/CNC v h thng cu trc ngn ng my CNC ang s dng.

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Training CAD/CAM/CAE/CNC

Creo Parametric

BI 1: CHUN B CNG C CHO QU TRNH GIA CNG1. Gi chi tit gia cng

File / New

2.

Nhp chi tit gia cng Reference Models Click Manufacturing / Reference Model.

Assemble Reference Model. Gi chi tit vo mi trng lp rp Gi chi tit ra v lp rp theo mc nh Default 3. Thit lp phi Workpieces

C 5 cch c bn thit lp phi nh Auto-Workpiace, Assembly v Create Nhng c 2 cch chng ta thng dng l to 1 phi bng cc lnh v c bn Create Workpiece v to phi t ng Automatic Workpiece Cch thc thc hin Chn biu tng B1. Chn to phi bng phng php Create

B2. t tn Phi B3. Chn Solid / Protrucsion. S dng cc lnh Extrude , revolve to phi cho khi /Done B4. Vo mi trng Sketch to Section /Ok Gv-Ks: Nguyn nh Thng_0984499008 Page | 5

Training CAD/CAM/CAE/CNCLc ny phi c mu xanh l m Chi tit v phi c to ra trong mi trng NC Assembly 4. Thit lp gc to Zero

Creo Parametric

Vo tab Model / Chn ln lt 3 mt phng to h trc to Zero theo th t Z, X, Y Vic to h trc Coordinate system tun theo quy tc bn tay tri

5. Chn my gia cng Click Manufacturing and the arrow next to Center Mill Mill-Turn Lathe Wire EDM Work

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Training CAD/CAM/CAE/CNC6. Thit lp thng s cng ngh Operation

Creo Parametric

To mt nguyn cng mi Click Manufacturing /

Click ln h trc ta Zero thit lp bc 4 Operation Tab

Coordinate system

-Clearance /Retract: To mt phng an ton bng Plane, Cylinder, Sphere, Surface, or None Sau khi thit lp xong trong Operation /OK th trn mn hnh xut hin thanh cng c Mill

7.

Thit lp dng c ct gt Tool. Click Tool Manager on the Manufacturing

Ta thit lp cc loi dao thch hp cho qu trnh gia cng -Tn dao, dao, loi dao, ng knh dao Sau chn Apply Trnh t vo File /New to ra cc dao mi , to xong dao /OK Gv-Ks: Nguyn nh Thng_0984499008 Page | 7

Training CAD/CAM/CAE/CNC

Creo Parametric

BI 2: PHNG PHP GIA CNG VOLUME MILLINGL phng php s dng my CNC 2.5 trc, tt c nhng lt ct u song song vi mt phng Retract Phng php ny thng c s dng gia cng th hoc gia cng tinh. Trnh t thc hin Sau khi thc hin cc bc thit lp chi tit gia cng, my,thng s cng ngh..ta chn phng php phay Volume Rough. i su vo qu trnh , chng ta s thc hin vi chi tit cn bn di y.

1. Click Mill /

Volume Rough.

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Training CAD/CAM/CAE/CNC

Creo Parametric

2. Chn dao v thit lp thng s ct gt trong Parameter

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Training CAD/CAM/CAE/CNCSCAN_TYPE. Cch qut dao v trnh o trn mt phng ngang

Creo Parametric

CUT_TYPE. Thng s ny kt hp vi SPINDLE_SENCE (Chiu quay trc chnh )

CLIMB+CW (default), Phay thun

UPCUT + CW, Phay nghch

CLIMB + CCWPhay nghch

UPCUT + CCWPhay thun.

ZIG_ZAG: Va quay thun, va quay nghch trn mi lt ct

ROUGH_OPTION ROUGH_ONLY Ch phay th bn trong th tch

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Training CAD/CAM/CAE/CNCROUGH_AND_PROF Gia cng th trc, sau gia cng tinh mt bn th tch

Creo Parametric

PROF _AND_ ROUGH Gia cng tinh mt bn trc, sau gia cng th th tch bn trong

PROF_ONLY Ch gia cng bin dng xung quanh th tch

ROUGH _AND_CLEAN_UP Gia cng th v qut cc thnh ca th tch m khng to lp gia cng tinh cho thnh bn

POCKETING Gia cng thnh bn th tch v sau phay mt di song song vi mt phng li dao Thng s dng cho phng php phay kiu khot

FACES_ONLY Ch gia cng tinh b mt cui cng nm trong th tch gia cng m song song vi mt phng li dao

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Training CAD/CAM/CAE/CNCCLEAR_DIST. Khong cnh an ton khi dao chuyn ng nhanh t chun my n b mt gia cng, khong cnh an ton s chy vi tc PLUNGE_FEED Cn khong cch mt phng RETRACT_SURFACE khong cch an ton li dao v chy nhanh vi tc G0 3. To mt phng an ton li dao Nhp gi tr an ton, l khong cch theo phng Z Nu trong Operation thit lp mt phng Retract th bc ny c th b qua 4. To th tch gia cng VOLUME Sau khi thit lp thng s trong Parameter /OK Xut hin dng nhc Select previously defined milling volume. nh th tch gia cng

Creo Parametric

-Ch ln trc tip th tch gia cng Mill Volume nu to trc hoc -Click Mill Volume thit lp th tch gia cng, lc ny dao s gia cng trong vng do ta thit lp nn. S dng cc cng c v trong mi trng Solid: Sau khi v th tch gia cng xong ta c th dng lnh Trim nu th tch gia cng giao vi chi tit Chn biu tng V chn vo chi tit

Ta c th xem th tch gia cng trc bng cng c Click View / Visibility / Shade

Shade trn thanh cng c hoc

V hon thnh vic to th tch gia cng 5. M phng gia cng Click Play Path vi 3 la chn sau -Screen Play: M phng di dng ng chy dao -NC Check: M phng di dng khi

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Training CAD/CAM/CAE/CNC-Gouge Check: Kim tra va chm dng c

Creo Parametric

Sau khi m phng gia cng ta chn Done Seq hon thnh gia cng Volume - m phng di dng khi trong mi trng VERICUT ta lm nh sau Vo File / Options / chn / Add Nccheck : M phng trong mi trng Creo Vericut: M phng trong mi trng Vericut Qa trnh ci t cn ci t thm Vericut trong Options 6. Hiu chnh li bc gia cng Volume 6.1 Hiu chnh li th tch gia cng Volume Click chut phi vo th tch cn gia cng chn -Redefine Mill Volume: vo mi trng to th tch gia cng to thm hoc hiu chnh th tch gia cng. -Edit Definition / Suspend All: vo mi trng Sketch hiu chnh li th tch gia cng. 6.2 Hiu chnh li Setup - Edit Definition: Hiu chnh li ton b quy trnh gia cng Seq Setup: Play Path: Customize: Seq Info: Done Seq: -Edit Step Parameters: Hiu chnh li thng s gia cng -Edit Step Tool: Hiu chnh li dng c ct gt -Pattern: Sao chp bc gia cng. Ging nh sao chp i tng trong mi trng Solid Gv-Ks: Nguyn nh Thng_0984499008 Page | 13

Training CAD/CAM/CAE/CNC-Play Path: M phng gia cng -Material Removal Simulation: M phng gia cng dng khi

Creo Parametric

-Save Step Parameters: Lu li thng s cng ngh dng cho cc bc k tip. Khi chn Seq Setup thit