__ án môn h_cCadCam_27.11HoanChinh

8/3/2019 __ n mn h_cCadCam_27.11HoanChinh

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n mn hc: CAD/CAM/CNC GVHD: Trn nh Sn

LI NI U

Ngy nay cng vi s pht trin ca nn kinh t th trng ha nhp vo nn kinh t thgii, ngnh cng nghip Vit Nam ang thay i mt cch nhanh chng. Cng ngh v thit b hi dn dn thay th cc cng nghip lc hu v thit b c k, cc thit b, cng ngh tin tincng c ng dng rng ri trong cc c s sn xut to ra cc dy chuyn bn t nng nng cao nng sut, nng cao cht lng sn phm.

Ngnh c in t hin nay ang l ngnh c s quan tm v u t ch ng ca nc. S ng dng my cng c iu khin theo chng trnh s CNC to nn bc nhy mnng cao cht lng sn phm nng cao nng sut, ci thin c iu kin lao ng cho ncng nhn, cc chi tit ch to ngy cng t cp chnh xc cao, cc chi tit c hnh dng phcu c kh nng gia cng c. c bit s ra i cng ngh CAD/CAM/CNC gip cho nh k ch to rt ngn thi gian chun b thit k thay th quy trnh cng ngh, c kh nng cpnhanh chng, cng ngh tin tin cc nc thng qua mng Internet.

Vic ng dng cng ngh thng tin m phng qu trnh gia cng cc chi tit trn mtnh to ra mt cng c hc tp trc quan, t tn km, s gip ch rt nhiu cho sinh vin trongtip thu nhng l thuyt rt kh ny ti trng cng nh khng b b ng khi ra lm vic tcng ty, cc nh my Mt khc, n gip cho cc c s o to vn m bo c cht ln

to m khng nht thit phi u t, trang b thm cc thit b, my mc thc rt tn km, c thn hng t ng. iu ny c ngha rt thit thc trong cng tc o to, nghin cu khoa h

Sau thi gian tm hiu v c s hng dn ca thyTrn nh Snnhm chng em hon thnh n ny. Do trnh cn hn ch chc chn s khng trnh nhng thiu st rt mc cc qu thy c gp b sung.

Chng em xin chn thnh cm n !

Nng, Ngy19 Thng 11 nm 2010Sinh vin thc hinNguyn Vn Qunh

SVTH:Nguyn Vn Qunh_Lp 06CDT2Trang:1


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Chng 1: GII THIU V CNG NGH CAD-CAM-CNC1.1/Gii thiu chung v CAD/CAM trong lnh vc ch to khun mu

CAD/CAM (Computer Aided Design/ Computer Aided Manufacturing) l thung ch vic thit k v ch to c h tr bi my tnh. Cng ngh CAD/Cs dng my tnh thc hin mt s chc nng nht nh trong thit k vto. Cng ngh ny ang c pht trin theo hng tch hp thit k vi xut, CAD/CAM s to ra mt nn tng cng ngh cho vic tch hp my trong sn xut.

CAD l vic s dng h thng my tnh h tr trong xy dng, sa i, ptch hay ti u ho. H thng my tnh bao gm phn mm v phn cng dng thc thi cc chc nng thit k chuyn ngnh. Phn cng CAD gmmy tnh, cng ho, bn phm v cc thit b ngoi vi khc. Phn mm CAgm c cc chng trnh thit k ho, chng trnh ng dng h tr cho nng k thut cho ngi s dng nh: phn tch lc ng sut ca cc b ph phn ng ng lc hc ca cc c cu, cc tnh ton truyn nhit v lp trniu khin s.

CAM l vic s dng h thng my tnh lp k hoch, qun l v iu kcc hot ng sn xut thng qua giao din trc tip hay gin tip gia my v cc ngun lc sn xut. Cho ng dng ca CAM c chia thnh hai phtr:

1.2/Vai tr v chc nng ca CAD trong h thng sn xut tch hp (CIM) COMPUTER INTEGRATED MANUFACTURING (CIM)

Hnh 2. Vai tr ca CAD/CAMtrong h thng sn xut tch hp


tng

CAD CAE

CADCAPP

CADCAPP

CADCAPP

Lu tr

CADCAPP

CADCAPP

CADCAPP

Nhu cu

Phn phi

C s dliu trung tm


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n mn hc: CAD/CAM/CNC GVHD: Trn nh SnCAD - Computer Aided Design : Thit k vi s gip ca my tnhCAE - Computer Aided Engineering : Phn tch k thutCAPP - Computer Aided Process Planning : Lp quy trnh ch toCAM - Computer Aided Manufacturing: Gia cng vi s gip ca my tnh

CNC - Computer Numerical Controlled : Thit b iu khin sCAQ - Computer Aided Quality Control: Gim st cht lng sn phmMRP II - Manufacturing Resource Planning : Hoch nh ngun lc sn xutPP - Production Planning: Lp k hoch sn xutCc phn mm CAD/CAM chuyn nghip phc v thit k/ gia cng khun m

kh nng thc hin cc chc nng c bn sau:- Thit k m phng hnh hc 3 chiu (3D) nhng hnh dng phc tp- Giao tip vi cc thit b o, qut to 3D (Coordinate Measuring Machine

CMM) thc hin nhanh chng cc chc nng m phng hnh hc t d liu s (digitdata).

- Phn tch v lin kt d liu: to mt phn khun, tch khun, qun l kt cughp,....

- To bn v v ghi kch thc t ng: C kh nng lin kt cc bn v 2D vhnh 3D v ngc li

- Lin kt vi cc chng trnh tnh tn thc hin cung cp chc nng phn tch

thut (CAE): tnh bin dng khun, m phng dng chy vt liu, trng p sut, cvt liu,...

- Ni suy hnh hc, bin dch cc kiu ng chy dao chnh xc cho cng ngh cng iu khin s.

- Giao tip d liu theo cc nh dng ho chun: DXF, IGES, VDA, PTC,...- Xut d liu ho 3D di dng tp tin STL (Stereolithograth) giao tip

thit b to mu nhanh theo cng ngh to hnh lp th (Stereolithograth Apparatus - SL 1.3/Phng php m t khi hnh hc (solid):

Khc bit c bn vi m hnh mt cong, ngi d liu hnh hc thuc mt b phng php m t theo cu trc khi, cho php qun l d liu thuc min khngtrong thc th hnh hc.

1.4/ng dng CAD/CAM trong ch to khun mu:Trnh thit k v ch to khun mu c th coi l mt tiu ch nh gi s p

trin ca nn cng nghip. Trn th gii c tnh 40 - 90 % cc sn phm trong cc ncng nghip c ch to bng vic s dng cc h thng khun mu khc nhau. Snkhun mu thuc loi sn phm C - Tin - in t (Mechatronics) k thut cao, vicdng cng ngh thng tin vo cng nghip khun mu hin nay theo cc hng sau:



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n mn hc: CAD/CAM/CNC GVHD: Trn nh Sn- Hon thin v pht trin phn cng iu khin s CNC, pht trin phn mm t

hng : n gin trong lp trnh, tch hp nhiu tnh nng v giao din linh hot, thun - Xy dng cc h phn mm tch hp CAD/CAM/CAE tr gip trong thit k v chkhun mu. Hng pht trin ca h thng tch hp CAD/CAM l s b sung cc m

thit k, cp nht thm cho phng php gia cng chnh xc, hiu qu v hin i.- Pht trin cc phn mm tr gip thit k, tnh ton, kim nh v m phHng pht trin ny mi m v ang c u t u tin hng u.

ng dng cc h phn mm tch hp CAD/CAM/CAE hin nay ang l th trmua bn v ng dng kh si ng. C th ni rng: khng c phn mm CAD/CAMkhng th thit k v ch to khun mu phc tp, c chnh xc cao.

Trong cng ngh ch to sn phm khun mu cng ngh cao th cng ngh thnc ng dng rt c hiu qu v ng vai tr quan trng quyt nh trong ngnh C-

t. Vic ng dng cng ngh thng tin trong gia cng c kh bng cc thit b iu khil vn c ngha khoa hc v thc tin ln trong o to cng nh trong sn xut c



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Chng 2: PHN TCH THIT K V CHN CCTHNG S K THUT

2.1/La chn chi tit:Chi tit c gia cng cn chnh xc cao v bng b mt cao , tch hp nhiu b

cng ngh trn mt nguyn cng. Phi c hnh dng phc tp i hi my cng c thkhng th gia cng c . n ny ta chn chi tit l khun c n p h p ng c, ccng dng dng y ng c cho my bm khm bo an ton trong qutrnh lm vicca ng c thc hin gia cng Cad/Cam ,CNC.Bn v 3D ca np hp ng c.

Hnh1.1 N p h p ng c 2.1.1/Phn tch chi tit:T tnh nng ca sn phm, bdy thnh mng ca n p h p l2.5mm dy.Do vt

liu lm khun c phi m bo ng vi yu cu nh bn, mi mn, tnh chnt, kh nng chu lc v bin dng, ng thi tui th cao khi lm vic trong iu klin tc. V vy ta chn vt liu cho khun gia cng l thp dng c hp kim, theo tichun ca Nht k hiu l thp SKD11, sau khi gia nhit c cng 60-65 HRC.



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n mn hc: CAD/CAM/CNC GVHD: Trn nh Sn2.1.2/Bn v chi tit ca khun di: 2.1.2.1/Bn v 2D ca khun di:

Bn v chi tit khun di np ng c 2.1.2.2/Bn v 3D ca khun di:

Bn V khun di np ng c



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n mn hc: CAD/CAM/CNC GVHD: Trn nh Sn 2.1.2.3/Yu cu i vi khun c:

+ C chnh xc theo bn v thit k.+ Chi tit khng bbin dng sau khi c.+ C bn v tui th cao.

2.2 Chn vt liu, phi ban u ca chi tit:a. Chn vt liu:T tnh nng ca sn phm, b dy thnh mng ca n p h p l 2.5mm.Do vt liu

lm khun c phi m bo ng vi yu cu nh bn, mi mn, tnh chng nnng chu lc v bin dng, ng thi tui th cao khi lm vic trong iu kin lin tvy ta chn vt liu cho khun gia cng l thp dng c hp kim, theo tiu chun ca Nk hiu l thp SKD1, sau khi gia nhit c cng 60-65 HRC. Khun c nhm b R z=20. C mt cnh c dung sai khng vt qu 0,02mm c biu din bn v c

ngh. b. Chn phi ban u:Chn phi ban u dng tr hp v c cc kch thc 120x120x51(mm) nh hnh v

Hnh 2.2 S biu din cc mt

2.3 Phn tch cc bc cng ngh gia cng chi tit:



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n mn hc: CAD/CAM/CNC GVHD: Trn nh Sn1: l mt phng trn2: mt phng bn3: mt phng di

Dng to kp cht mt phng (2) v tin hnh gia cng mt phng (1)

*.Cc bc cng ngh :1.Bc 1 :Phay mt u ca khun2.Bc 2:Phay th lng khun3.Phay tinh lng khun4.Bc 4 :Phay th rnh y v 3 tai khun khun5.Bc 5 :Phay tinh rnh y v 3 tai khun khun6.Bc 6 :Khoan th 4 cht nh v7.Bc 7 ;Khoan tinh 4 cht nh v

3. Chn my gia cng :3.1 Kiu my:My phay CNC MCV-1000

3.2 Thng s k thut :

Bn my:+ kch thc bn my: 1200 x 400 (mm). (47.24" x 15.75")+ Rnh ch T (Rng x s rnh x Bc) 16x3x100 (mm)+ Ti trng bn 800 kg.Hnh trnh dch chuyn+ Hnh trnh dch chuyn theo trc X, Y, Z l: 1000 x 510 x 510 (mm).+ Khong cch theo chiu dc t mi trc chnh ti bn my: 120-630 (mm).+ Khong cch theo chiu dc t mi trc chnh ti mt ct : 550 (mm).u trc chnh+ Mi trc chnh: BT40.+ Tc trc chnh: 6000-8000 vng.


My phay CNC MCV-1000


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n mn hc: CAD/CAM/CNC GVHD: Trn nh Sn+ Hnh trnh dch chuyn trc chnh: 140 (mm).+Tc n dao trc chnh: 3-5 m/pht.+ Tc n dao ngang, dc: 5-10 m/pht.ng c + ng c trc chnh: 5 kw.+ ng c cc trc XYZ: 1 kw.+ ng c dung dch ct gt 1/8 HP.Kch thc my:+ Trng lng tnh / ng thng: 3200/3400 kg.+ Kch thc my: 1600 x 1700 x 2600 (mm)Kh nng t ng thay i+ Cng c la chn 2 chiu+ Thn dao BT 40.+ Kh nng t ng thay i dng c: 16 dng c.

4. Chn dao v thng s k thut ca dao:4. La chn dao cho cc nguyn cng:4.1. Tnh ton ch ct cho cc dng gia cng

tnh ton v chn ch ct khi gia cng phay cho cc bc ca nguyn cng, ta dng tnh ton cho tng dng gia cng nh hnh 3.4


Hnh 3.4 : S tnh ton cho cc dng gia cng

(a): Gia cng bin dng, (b): Gia cng rnh,(c): Gia cng mt phng v bin dng, (d): Gia cng l


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n mn hc: CAD/CAM/CNC GVHD: Trn nh SnVn tc ct C V (m/pht) c tra bng ng vi tng loi vt liu lm dao, vt liu

cng, bin dng cn gia cng, dng gia cng (th, bn tinh hay tinh).+ Tnh ch ct khi gia cng bin dng (bng 4.1a):

* Chiu su ct ap 0.1ng knh dao DC .* B rng ct ae 0,1ng knh dao DC .

* Vn tc ct chn theo vt liu gia cng: khi gia cng nhm c cng 90 HBV C = 1000 m/pht; khi gia cng thp c cng l 200 HB th Vc = 140 - 190 m/pht; khigia cng thp c cng 63 HRC th VC = 30 - 50 m/pht

Bng 4.1a. Quan h gia ng knh dao vi lng ct dao rng khi gia cng bin dng

Dc(mm)

Lng ct daorng f z (mm/Z)

Dc(mm)


Dc(mm)


34

5

0.01 - 0.020.02 - 0.04

0.03 - 0.06

68

10

0.03 - 0.070.05 - 0.09

0.07 - 0.12

1216

20

0.08 - 0.130.09 - 0.15

0.10 -.016+ Tnh ch ct khi gia cng mt phng v gia cng bin dng (Hnh 4.1c):Khi chn ch ct tu theo vt liu ta chn vn tc ct, lng ct dao rng chn theo

Bng 4.1b. Quan h gia ng knh dao vi lng ct dao rngkhi gia cng mt phng v gia cng bin dng

Dc(mm)


Dc(mm)


Dc(mm)


345

0,03 - 0.040.04 - 0.070.05 - 0.09

6810

0.05 - 0.100.06 - 0.110.07 - 0.12

121620

0.08 - 0.130.09 - 0.160.13 - 0.25

+ Tnh ch ct khi gia cng l (Hnh 4.1c): Khi gia cng ta cn ch v lng khi dao ct xung v ch chn ng knh dao khi gia cng.

Ta c cng thc tnh nh sau:Vf = f z . n . Zn (mm/phut)

Vc =1000

.. Dcn (m/pht)

n = Dc

Vc

.

1000.

(vg/pht)Vi dao cu ta c s tnh nh Hnh 3.6.

Ta c cng thc tnh nh sau:

Vf = f z . n . Zn (mm/pht)


Dc2

Dap a p

Hnh 3.5: S tnh ch ct bng dao u cu v chm cu


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1000

n.D. V ape

= (m/pht)

ap

e

.D1000.V

n

= (vg/pht)

Vi: ap p c2 pD = 2 a (D - a ) (mm)Tng t nh chn ch ct khi gia cng mt phng, vi lng ct dao rng

chn nh Bng 4.1cBng 4.1c. Quan h gia ng knh dao vi lng ct dao rng khi gia cng bng dao

Dc(mm)


Dc(mm)


Dc(mm)


2456

0.015 - 0.0200.04 - 0.070.05 - 0.090.05 - 0.10

781012

0.06 - 0.100.06 - 0.110.07 - 0.120.08 - 0.13

14161820

0.08 - 0.150.09 - 0.160.09 - 0.160.09 - 0.16

Bng 4.1d Bng chn lng chy dao khi phay

4.1/Bc 1:Phay mt uca khun:Chn dao phay mt u c cc thng s k thut nh sau :Chn dao c s hiuR245-063Q22-12MGc nghing rng:450 , D= 63mm, c 5 li ct , ct th.Chn inserts cho dao phay mt u l loi R245-12 T3 M-PH c GC = 2040.



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n mn hc: CAD/CAM/CNC GVHD: Trn nh SnBng thng s tra hm ty vo insert ca mi loi dao phay .Tra bng pha di ta chn hm =0.08

Phay mt u: Chn hm=0.08mm,ap=1mm

4.2 Dao phay hc: Chn dao phay th hc c cc thng s k thut nh sau :

Chn dao c s hiuR390-020C3-11M050Gc nghing rng: , Dc = 20, c 3 li ct



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n mn hc: CAD/CAM/CNC GVHD: Trn nh SnBng tra Gc,ty thuc vo inserts ca dao vi tng loi vt liu phi khc nhau m ta cGc khc nhau.

Chn inserts cho dao:GC =2030



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n mn hc: CAD/CAM/CNC GVHD: Trn nh SnCh phay th cho hc khun di. Chn fz=0.1mm,ap=0.5mm,ae=10mm

*Chn dao phay tinh hc c cc thng s k thut nh sau :Chn dao c s hiuR216-20B25-050,cD3 =20,c 2 li ct.

Bng tra Gc,ty thuc vo inserts ca dao vi tng loi vt liu phi khc nhau m ta cGc khc nhau.

Chn insert cho dao c GC=1030

Ch phay tinh cho hc khun di. Chn fz=0.5mm,ap=0.2mm,ae=10mm



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4.3 Dao phay rnh:Chn dao phay rnh c cc thng s k thut nh sau :Chn dao c s hiu R216.23-02050BAK70H 1620Gc nghing rng: 45 , Dc= 2, c 3 li ct

Ch phay th cho cc tai v rnh y ca khun. Chn fz=0.7mm,ap=0.5mm,ae=1mmPhay th s dng dao phay ngn (dao thp gi)Thng s k thut

+Chn ng knh dao2=

c D

mm.+ Chiu di dao:57 mm+ Tc ct cho php: 6369

214.3100040

.1000.

===

x x

DcVc

n

(vg/pht)+ Ch ct 7.19103.06369.. ==== xn f V F v f (mm/pht).

* Vi 5.025.0 =v f (mm/vng) l lng chy dao. Tra bng 4.1d+ Bc tin S=5 mm.



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n mn hc: CAD/CAM/CNC GVHD: Trn nh SnChn dao phay tinh cc rnh c cc thng s k thut nh sau :Chn dao c s hiu R215.24-03050BAC08H 1610C Dc= 3, c 4 li ct

Ch phay tinh cho cc tai v rnh y ca khun.Chn fz=0.07mm,ap=0.2mm ,ae=1mm

Phay tinh ta chn dao phay chm cu.+ S me:4~6 me. Chn 4=n Z me+ Chn dao c ng knh 3=c D mm+ Chiu di dao:57mm

+ Tc ct cho php: 74315.114.3

351000.D

1000.V n

ap

e ===

x x

(vg/pht)

*. Vi 5.1)2.03(2.02)(2 2 === pc pap a Da D (mm), 35=eV (m/pht) Tc ct chn theo vt liu gia cng.

+ Ch ct 20804743105.0..==== x x Z n f V F n z f (mm/pht)

*. Vi 1.005.0 = z f (mm/rng) l lng ct dao rng+ Bc tin S=2 mm.

4.4/Chn dao khoan 4 cht nh v:4.4.1/ Khoan th:

- Mi khoan hp kim cng c D = 10 mm, l = 100 mm

Hnh 3.7. Mi khoan hp kim cng *. Dao phay ngnXs nhiu me

Thng s k thut ca dao+ S me:6~8 me. Chn dao 6= Z me+ ng knh ca dao:3~20 mm.Chn dao c ng knh10 mm+ Chiu di dao:50~100 mm

* c im: Dao khoan tc rt cao, b mt gia cng bng, khoan t thp thng

thng n thp c cng rt cao 60-62 HRC.Vn tc ct c chn theo vt liu. Vi cng 60-65 HRC ta chn VC = 30 -50 m/pht SVTH:Nguyn Vn Qunh_Lp 06CDT2Trang:16


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+ Tc ct 42.9551014.3100030

.

1000.===

x x

DcVc

n (vg/pht)

+ Ch ct 27.401642.95507.0.. ==== x x Z n f V F n z (mm/pht).* Vi 12.007.0 = (mm/rng). Bng 4.1b, ta chn 07.0= (mm/rng).

+ Bc tin S=3 mm.

4.4.2/: Doa 4 cht nh v : - Mi doa hp kim cng

Thng s k thut ca dao+ S me:4~8 me. Chn dao 4= Z me+ ng knh ca dao:3~20 mm.Chn dao c ng knh6 mm+ Chiu di dao:50~100 mm

Hnh 3.8. Mi doa hp kim cng Vn tc ct c chn theo vt liu. Vi cng 60-65 HRC ta chn VC = 30 - 50m/pht

+ Tc ct 36,1592614.3100030

.1000.

===

x x

DcVc

n (vg/pht)

+ Ch ct 8,445439,159207.0.. ==== x x Z n f V F n z (mm/pht).* Vi 10.005.0 = (mm/rng). Bng 4.1b, ta chn 05.0= (mm/rng).

+ Bc tin S=2 mm.

C hng 3: THIT K, TCH KHUN,



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LP TRNH GIA CNG KHUN CHI TIT NP HPNG C TRN PHN MM Pro ENGINEER

1) Tch khun:+ Bc 1 :Vo mi trng gia cng.Sau khi thit k chi tit np hp ng c ta m 1 Flie miFile\New, hp thoiNewm ra tatu chn vo cc mcMANUFACTURINGv Mold Cavity, t tn lKhuonv b dutch mcUSE DEFAULT TEMPLATEchnOK,hp thoiNew File Optionsm ra,chn n vMMNS_MFG_MOLDri chnOK.

+ Bc 2 :Gi chi tit tch khun.T ca sMENU MANAGER pick chut chnMold Model\ Assemble\ Ref Model\.CasOpenm ra ta chnphoi_napdc.prt, chnOpen.

+Bc 3 :Gn trc ta .Gn 3 mt phng trong mi trngPart vi 3 mt phng trong mi trng MOLD. Chn

. ChnOK ng . Ca sCreate Reference Modelhin ra ta chn nh hnh vOK kt thc.



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+ Bc 4 :To phi khun.Trong ca sMENU MANAGER chnMold Model\ Create\ Workpiece\ Manual.CasComponent Createhin ra ta t tn lphoi_khuon chnOK ng . Ca sCreation Options xut hin, chn Create features, chnOK . Trong ca sMENUMANAGER chnSolid\ Protrusion\ Extrude\ Solid\ Done.Thanh trng thi hin ra, tachnPlacement\ Define.Ca sSketchhin ra ta chon mt phngMOLD_FRONTchnSketch, ca sReferenceshin ra ta chn cc mt phng gii hn bt im cho thutin khi v phc, sau chnClose.



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n mn hc: CAD/CAM/CNC GVHD: Trn nh SnDng cc cng c v phc v mt hnh vung c chiu di 120mm, c tm trngtrc i xng ca chi tit np hp, chn , chn nh hnh sau xc nh chiu ca phi

Chn , chnDone/Return kt thc vic to phi.Ta c phi khun nh hnh

+ Bc 5 :To mt phn khun. to mt phn khun ta pick chut chnParting Surf t ca sMenu Manager.Pick

chut chn Create,Pro/Engineer se trnh by ca sParting Surface Nameyu cu ta nhptn cho mt phn khun. mcName ta nhp tn cho mt phn khun l sau chn OK chp nhn.Pick chut chnAdd >Shadow >DonePro/Engineer s trnh by ca sFEATURE REFSyu cu ta pick chut chn mu sn phm.Pick chut chn Done/Return ra lnh cho h thng Pro/Engineer thc hin lnh to phn khun.Kt thc lnh ta c mt phn khun nh hnh sau:



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+Bc 6:Chia khun thnh hai na khun. thc hin vic phn mnh khun ta pick chut chnMold Volume, t ca sMOLD

pick chut chnSplit bo choPro/Engineerbit ta mun tch khun.Sau khi chia khunthnh hai na khun.Kt thc vic to khun, chnSave.



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n mn hc: CAD/CAM/CNC GVHD: Trn nh Sn+Bc 7:M khun

2.Khi to mt nguyn cng cho gia cng+ Bc 1 :Vo mi trng gia cng.

Sau khi tch khun cho chi tit gt tn ta m 1 Flie mi (File\New), hp thoi New m ra tatu chn vo cc mcMANUFACTURING v NC ASSEMBLY, t tn lGiaCongKhuonDuoiv b du tch mcUSE DEFAULT TEMPLATEchnOK vchn n vMMNS_MFG_NCri chnOK.

+ Bc 2 :Gi chi tit cn gia cng.TInsert\Reference Model\Assemble. Ca s Open m ra ta chnlong.prt, chnOpen.

+Bc 3 :Gn trc ta .

Gn 3 mt phng trong mi trng Part vi 3 mt phng trong mi trng NC. Chn hoc Align sao cho vt th v tr thun li. Chn ng . Ca s Create ReferModel hin ra ta chn Inherited. ChnOK kt thc.

+ Bc 4 :To phi ban u.ChnInsert\Workpice\Create. Ca sMessage Input Windownhin ra ta t tn l

phoi-gc-long chn ng . Trn ca sMenu Manager mi chn



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n mn hc: CAD/CAM/CNC GVHD: Trn nh SnSolid\Protrusion\Solid\Extrude\Done. Trong khung la chn ca chng trnh chn mcPlacement\Definechn mt mt ca vt th, trong ca s Sketch chn Sketch, ca References hin ra ta gii hn bt im sau chnClose,v mt mt phng lm c s thc hin lnh Extrude. Sau c ty chn khong cch to phi gia cng.

+ Bc 5 :Thit lp cc thng s k thut cho my.TResources\Work Center, lc ny ca s Machine Tool Setup m ra. Ta chn thng sca my nh cc thng s sau:

Trong mc Machine Name: MACH01+ Machine Type: Mill+ Number of Axis: 3 Axis.

Trong mc Spinde thit lp cc thng ssau:+ Maximum Speed:+Horsepower :

Trong mc Feed:+Rapid Traverse: MMPM+ Rapid Feed rate :0.5

Trong mc cutting tools (tool change time: 5 sec)Trong mc Travel

+ X Axis Travel: 500500+Y Axis Travel: 250250+ X Axis Travel: 200200

Kt thc vic thit lp thng s k thut cho my chnApply\OK. + Bc 6 :Thit lp to ban u cho dao.

Chn biu tng trn mn hnh ca chng trnh, ca sCOORDINATE SYSTEMhin ra, chn 3 mt phng vung gc ti mt im, qua th Orientation iu chnh saotrc z hng ln trn phi, cn trc x v y th hng theo cc cnh ca phi. Kt thc thit lp ta ta chnOK

+ Bc 7 :Thit lp cc thng s ca ch ctChn Steps\Operation ca s Operation Setup hin ra, chn biu tng v chn mMACH01 ta va thit lp. Chn th Machine Zero, chn biu tng v chn trc tASC0 m ta thit lp bc trc. Trong th Surface, chn biu tng v cRetract Setup hin ra, chn mt phng thun li gia cng, trong th Value ta nhp g5, chn OK. Trong th Tolerance gi tr mc nh 1. Chn Apply\OK kt thc tlp bc cng ngh.



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3.Lp trnh gia cng cho bc cng nghphay3.1/Chn my v thit lp gc ta :

3.1.1)Phay mt u:

To Mill Window. Chn , chn , chn Placement, chn mt trn ca phi Sketch, chn vo mi trng Sketch, ca s Sketch xut hin chn Sketch, cReferences, xut hin v ta gii hn im cho qua trnh v Sketch. Tch chn

thc v Sketch, chn kt thc to Window cho qu trnh gia cng.Chn Steps\Face, ca Menu Manager hin ra, tu chn Name, Tools, Parametets, MaGeom chn Done.

Ca s Message Input Window t tn PHAYMATDAU, chn .Ca s Tools Setup m ra, ta chn theo mt s thng s sau:

- Name: T0001- Type: End Milling- Units: Millimeter - Number of Teeth: 5

Chn Apply\OK. Ca s Edit Parameters of Squence PHAYMATDAU thit lp cc ths theo nh sau:

- CUT _FEED: 140 mm/phut- STEP_DEPTH: 0.5 mm- STEP_OVER: 40 mm- CLEAR_DIST: 10 mm- SPINDLE_SPEED: 686 vg/phut

Chn OK. Ca s Surfaces xut hin, ta chn Mill Window khi hi ta to c, chn kt thc vic chn Surface. Trong Manu Manager chn Play Path\ Screen Play, ca s P



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n mn hc: CAD/CAM/CNC GVHD: Trn nh SnPath xut hin, x l thy c qu trnh phay mt u. Chn Done Seq lu cng ngh va thc hin.

3.1.2)Ph phi:Chn Steps\Volume, v ty chn Name, Tools, Parametets, Window chn Done.

Ca s Message Input Window t tn PHAPHOI chn .Ca s Tools Setup m ra, ta chn theo mt s thng s sau:

- Name: T0002

- Type: Milling- Units: Millimeter - Number of Teeth: 3



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n mn hc: CAD/CAM/CNC GVHD: Trn nh SnChn Apply\OK. Ca s Edit Parameters of Squence PHAPHOI thit lp cc thng s tnh sau:

- CUT _FEED: 140 mm/phut- STEP_DEPTH: 0.5 mm- STEP_OVER: 1 mm- SCAN_TYPE: TYPE_3- CLEAR_DIST: 10 mm- SPINDLE_SPEED: 2228 vg/phut

Chn OK, ta chn Mill Window khi hi ta to c. Trong Manu Manager chn Play PScreen Play, ca s Play Path xut hin, x l thy c qu trnh phay mt u. CDone Seq lu bc cng ngh va thc hin.

3.1.3)Phay tinh:Chn Steps\Profile, v ty chn Name, Tools, Parametets, Window chn Done.

Ca s Message Input Window t tn PHAYTINH chn .Ca s Tools Setup m ra, ta chn theo mt s thng s sau:

- Name: T0003- Type: Milling- Units: Millimeter - Number of Teeth: 3



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Chn Apply\OK. Ca s Edit Parameters of Squence PHAYTINH thit lp cc thngtheo nh sau:

- CUT _FEED: 743 mm/phut- STEP_DEPTH: 0.05 mm- STEP_OVER: 1mm- CLEAR_DIST: 1mm- SPINDLE_SPEED: 3713 vg/phut


3.1.4 /Phay th cc rnh:Chn Steps\Volume, v ty chn Name, Tools, Parametets, Window chn Done.

Ca s Message Input Window t tn PHAYTHOCACRANH chn .Ca s Tools Setup m ra, ta chn theo mt s thng s sau:




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Chn Apply\OK. Ca s Edit Parameters of Squence PHAPHOI thit lp cc thng s tnh sau:

- CUT _FEED: 165 mm/phut- STEP_DEPTH: 0.5 mm- STEP_OVER: 0.5mm- SCAN_TYPE: TYPE_3- CLEAR_DIST: 10 mm- SPINDLE_SPEED: 4356 vg/phut




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n mn hc: CAD/CAM/CNC GVHD: Trn nh Sn3.1.5)Phay tinh cc rnh:

Chn Steps\Profile, v ty chn Name, Tools, Parametets, Window chn Done.

Ca s Message Input Window t tn PHAYTINH chn .Ca s Tools Setup m ra, ta chn theo mt s thng s sau:


Chn Apply\OK. Ca s Edit Parameters of Squence PHAYTINH thit lp cc thngtheo nh sau:

- CUT _FEED: 546 mm/phut- STEP_DEPTH: 0.2 mm- CLEAR_DIST: 10mm- SPINDLE_SPEED: 3713 vg/phut

Chn OK, ta chn Mill Window khi hi ta to c. Trong Manu Manager chn Play PScreen Play, ca s Play Path xut hin, x l thy c qu trnh phay mt u. CDone Seq lu bc cng ngh va thc hin.3.1.6/Khoan 4 l:a/Nguyn cng khoan th l 10:Gm cc bc sau:

TrongMenu ManagerchnMachining NC Sequence New Sequence MachiningHolemaking Done Drill Standard Done. Trong menu bn di, nh du cc Name,Comments, Tool, Parameters, v Holes, sau chnDone.

Xut hin bng Tool Setup v in cc thng s dao nh hnh 4.18Chn Done>Set, xut hin hp thoi Param Tree, chn cc thng s nh hnh 3.18



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Chn Done, xut hin bng HoleSet, ta chn cc thng s nh hnh 4.19Chn Ok>Done Return>Play Path>Nc Check xem m phng gia cng. Chn Done Seq kthc nguyn cng.Xut file CNC: Chn CL Data>Output>Select One>SELECTFEAT>Operation.Chn nguyn cng phay th ang gia cng, chn Done>File>Done, xut hin bng, t tn nguycng l khoantho12 ri save, chn Done output>Post Process, chn file khoantho12>Open>Done,chn bt k trong PP list, nhp s bt k>Enter>Close>Done/Return. M file khoantho12.tap bnoterpad s c chng trnh gia cng bng my CNC nguyn cng khoan th l 12.

b-Nguyn cng khoan tinh l 10:Tng t nh khi khoan th, ta chn dao s 3 c Cutter Diameter l 12, t tn nguyn cng lkhoantinh12, ta c m phng nh hnh 4.20


Hnh 4.18: Cc thng s k thut khi khoan th l 10


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n mn hc: CAD/CAM/CNC GVHD: Trn nh Sn**Kt ni 7 bc cng ngh thnh mt cng on hon thnh.

T Menu Manufacture\Machining \CL data\Selec set\Seleat\Creat\Enter ouput set name: tn lLien-ket\. Trong mc CREAT SET\Select All\Done. Kt thc vic kt ni bnnguyn cng thnh mt cng on. Trn Menu Path\File\OutputType\File\Interactive\Don

Lc ny hp thoi save a copy ta t tnHoan-Thanh. xem kt qu vic kt ni, tMenu\Path\Done output\Cl Data\Nc check\Run. Lc ny trn mn hnh chy ln lt tnguyn cng 1 n nguyn cng 5.

Cui cng xut File chng trnh\Done\Return\Post Process, lc ny hp thoi Open xuhin, ta chn File\Hoan-Thanh-cd1\Open\Done, lc ny xut hin PP List ta kch chutvo Uncx01.P01, mc ENTER PROGRAM NUMBER ta nhp vo mt s bt k, sau chn Enter.

Lc ny mun m c chng trnh gia cng ta m fileHoan-Thanh.tap.



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Chng 1:GII THIU V CNG NGH CAD-CAM-CNC

1.Gii thiu chung v CAD/CAM trong lnh vc ch to khun mu:..............22.Vai tr v chc nng ca CAD trong h thng sn xut tch hp (CIM):........2

COMPUTER INTEGRATED MANUFACTURING (CIM)3. phng php m t khi hnh hc (solid):.....................................................34. ng dng CAD/CAM trong ch to khun mu:...........................................3

Chng 2: PHN TCH THIT K V CHN CC THNG S. .5 K THUT

1.c im v sn phm ca chi tit gia cng:.................................................. 62.Tnh nng k thut ca chi tit gia cng.:.......................................................10

3. Chn my gia cng :.......................................................................................10

4. Chn dao v thng s k thut ca dao :........................................................11CHNG 3: THIT K, TCH KHUN, LP TRNH GIA CNGKHUN CHI TIT NP HP NG C TRN PHN MM

Pro / ENGINEER1.Tch khun:.........................................................................................................16

2.Khi to mt nguyn cng cho gia cng:.........................................................203.L p trnh gia cng cho bc cng nghphay:......................................................21

3.1)Lp trnh cho bc cng ngh phay khun trn:............................................21

3.2) Lp trnh cho bc cng ngh phay khun di:..........................................28

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