doan_in

Chng I: GII THIU CHUNG

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

LI NI U

Ngy nay vi s pht trin ca khoa hc v k thut, ngi ta p dng cc thnh tu ca khoa hc v i sng v sn xut. Cng nh i vi cc ghnh khoa hc khc, nghnh c kh cng p dng rt nhiu tnh tu v khoa hc c bit l iu khin s. Phn ln cc my mc trong cng nghip hin i ngy nay u s dng my iu khin s.

i vi sinh vin nghnh c kh, vic tm hiu cc chng trnh iu khin s hay tham gia vo qu trnh lp trnh l vic lm c ngha nhm gip cho sinh vin nm c cc kin thc hin i cng nh hiu c bn cht ca cc my iu khin s. V vy thng qua vic lm n Cng ngh CAD/CAM/CNC gp phn nng cao kin thc cho sinh vin.

Trong khun kh n ny chng em s thc hin ti thit k khun thi chai nht . ti c ngha trong cuc sng, trong sut qu trnh lm n chng em cng tham kha nhiu ti liu lin quan cng vi s hng dn ca thy gio Trn nh Sn gip em hon thnh n ny. Do y l n u tin, mi m nn chc chn khng trnh khi sai st em mong c s gp ca cc thy. Em xin cm n

Sinh vin thc hin: H S Nam Chng I: GII THIU CHUNG1.1) Vai tr ca CAD_CAD_CNC:

CAD_CAM (computer aided design/ computer aided manufacturing) l thut ng ch vic thit k v ch to trn my tnh.S dng my tnh thc hin mt s chc nng nht nh trong thit k v ch to. CAD_CAM s to ra mt nn tng cng ngh cho vic tch hp my tnh trong sn xut

CAD(Computer Aided Design ) l vic s dng h thng may tnh h tr xy dng,phn tch hay ti u ha.

CAM (Computer Aided Manufacturing) l vic s dng h thng my tnh lp k hoch qun l v iu khin cc hot ng sn xut thng qua giao din trc tip hay gin tip gia my tnh v cc ngun lc sn xut.

CNC(Computer Numerical Controlled ) trc y cc chng trnh iu khin NC u thc hin thng qua bng c l,iu khin phi c b lc cung cp gii m tn hiu iu khin cho cc trc my,vi cch ny c nhiu hn ch,tn thi gian,cc chng trnh phi vit li v dung lng b.Chng trnh CNC khc phc cc nhc im bng cch c hng nghn bit thng tin trong b nh.Cho n nay chng trnh CNC xut hin trong hu ht cc ngnh cng nghip,y l lnh vc c s kt hp cht ch gia my tnh v my cng c.

1.2) ng dng CAD_CAM trong thit k v ch to sn phm:

Cho n nay vic ng dng cc thnh tu khoa hc cng ngh vo sn xut rt mnh m.Ngy nay,nhiu my cng c c thay bng my CNC.ng dng CAD_CAM_CNC t chc sn xut km theo l cc phn mm ng dng lp trnh v iu khin my.

Ton b cc thao tc gia cng trn my u c thit k v m phng trn my bng cc phn mm gip trnh c cc sai st c th xy ra.

Trnh thit k v ch to khun mu c th c coi l tiu ch nh gi s pht trin ca nn cng nghip. Sn phm khun mu hin nay l cc sn phm c in t k thut cao,vic ng dng cng ngh thng tin vo khun mu hin nay theo cc hng sau:

Hon thin v pht trin phn cng s iu khin CNC,pht trin phn mm theo hng n gin trong lp trnh,tch hp nhiu tnh nng ,giao din linh hot,thun li

ng dng h thng cc phn mm tch hp CAD_CAM_CNC ang l th trng mua bn v ng dng kh si ng.Nu khng c phn mm CAD_CAM th khng th thit k v ch to cc khun mu phc tp c chnh xc cao.

Trong vic ch to sn phm khun mu cng ngh cao th vic ng dng cng ngh thng tin rt c hiu qu v ng vai tr quyt nh quan trng trong ngnh c in t .Vic ng dng cng ngh thng tin trong gia cng c kh bng cc thit b iu khin s l vn c ngha khoa hc v thc tin ln trong o to cng nh trong sn xut c kh.

1.3) Gi thiu chung v chc nng ca PROE trong t hp CAD CAM CNC:

Phn mm PROE l phn mm tch hp y cc tnh nng thit k v m phng qu trnh gia cng chi tit, vi chc nng nh vy chng ta c th s dng cc chng trnh c lp trnh bng phn mm ny kt ni nhp vo b iu khin my CNC ,hay quan st qu trnh gia cng trc khi i vo gia cng thc t.

Trong phn mm PROE c nhiu modun khc nhau,sau y l mt s mondun dng thit k chi tit, phn khun v lp trnh gia cng.

- Modul Sketcher:

Sketcher l modul pht tho c nhim v chnh l to ra cc m hnh 2D v 3D t hnh thnh cc m hnh Solid hoc Surface. Tuy nhin do k tha cc cng c v ca CAD truyn thng, li c b sung cc cng c tham s ha,Sketcher tr thnh cng c v mnh v rt linh hot to ra cc bn v k thut.

- Modul Part:Thit k cc m hnh khi dng 3D da co phng php n khi hoc qut thnh khi c( solid) hoc thnh mng(shell) hoc mt phng (surface).- Modul Mannufacturing:

Thit k m phng tch khun v gia cng.

Chng II: PHN TCH V THIT K CHI TIT2.1) La chn chi tit: Cc chi tit gia cng trn my CNC th yu cu chnh xc v

nhm b mt cao, do khng th gia cng c trn cc may cng c thng thng.Gm cc chi tit: + Chi tit l mt b phn chnh ca cc khun dp, khun dp vut, khun c, khun p,... to ra cc sn phm nha, composite hoc cc sn phm c kh,...

+ Chi tit c hnh dng b mt phc tp, yu cu chnh xc cao nh: Turbin thy lc, kh nn, chn vt tu thy,....

+ Chi tit yu cu chnh xc v bng b mt cao, yu cu phi tch hp nhiu bc cng ngh trn mt nguyn cng khi thc hin gia cng ch to.

Trong khun kh n ny chng em s thc hin ti thit k khun thi chai nht2.2) Phn tch k thut v iu khin lm vic ca khun dp:a) iu khin lm vic

+ Chu tc dng c hc gy ra trn b mt khun.

+Vt liu lm khun yu cu phi c bn cao v t b mi mn + Lc va p do dng khun t 10 200KN

b) Phn tch cc yu cu k thut

+ Chi tit khun l phn to hnh b mt cnh qut0 do yu cu chnh xc cao

+ Mt phn khun di hi bng v chnh xc m bo kn kht,khng to bavia cho sn phm,c) Vt liu v c tnh yu cu

- Vt liu ch to l ht sc quan trng bi v n lin quan n tui th ca khun, chnh xc gia cng, tc gii nhitkhi trn vt liu tha mn cc yu cu sau:

+ Vt liu d tm, tnh gia cng tt

+Tnh chu mi mn,chu n mn cao

+ Thot nhit dng, t bin dng do nhit

Do cc yu cu trn nn vt liu ti s dng gia cng chi tit ny l thp C45 c cc thng s sau:

+ Gii hn bn: b= 610 MN\m2

+ Gii hn chy: c= 360 MN\m2

+ cng : HB = 190 HB

2.3) Thit k chai cnh qut: - thit k chi tit ny em dng phn mm PROENGINEER 4.0.

- Khi ng phn mm Pro/Engineer 2001 bng cch kch p chut vo biu tng trn mn hnh nn Desktop.

- Sau chn modul part nh hnh bn

Trong modul part ta v c hnh nh sau:

2.4) Thit k khun c cnh qut:T menu Mold Model chn CreateWorkpieceManualName: phoikhuon

Chn SoildProtrusionExtrudeSoildDoneBoth sidesDone.

Chn Setup NewPlanePickri chn vo mt phng MOLD_PARTING_PLN trn vng v ri OK. Ri chn TopPlanePickchn vo mt phng MOLD_FRONT vng Sketch hin ra.

Dng lnh circle v hnh ch nht c kch thc ng knh l 370mm. Sau BlindDoneEnter Depth: 130OKDone/ReturnDone/Return.

2.4.1) To cc mt phn khun:

+Mt phn th nht :- Chn Pating Surf/ Create/ nhp vo tn cho mt phn khun /Add / Copy /Done /Pick cc b mt cn copy /Done /OK.

- Chn Extend /Along Dir /Up To Plane /Done / Bndry Chain / Pick

mt Copy /Select All /Done / Plane / Pick mt phi di y cnh qut / Done

Extend ko di ra b mt phi.

+Mt phn th hai :

- Chn Pating Surf /Create / nhp vo tn cho mt phn khun

- Chn Edit / Fill .

- Chn / References / Define /Plane / Pick Surf :F1 Top/ lm mt

phng v phc.

- Chn Use / Single / chn hnh trn trong mt F1 / Done / Ok.

+Mt phn th ba : chia khun thnh 2 phn bng nhau.-Tr li mi trng part to mt phn khun th 3.

-Chn Edit / Sweep / Surface / Select traj / nhp vo cc i tng ta mun to surface / Done / Accept / Ok / Done vo mi trng v phc.

-Chn lnh Line v 1 on t tm ra di 150mm -Chn Done /OK. Kt qu cho ta mt phn khun nh hnh.

2.4.2) To cc th tch khun t cc mt phn khun hin c nh hnh

b khun:

Ta to cc th tch t cc mt phn khun c nh hnh b khun.

+ Chn Mode Volume /split/ two volume/ All wrkpcs /Done v pick vo mt side 2 ri nhn done th h thng hin sng phn th tch khun to ra v cn ta t tn cho n.

+ Nu tip tc mn to cc th tch nh hn trong phn th tch to ra th ta vo Mode Volume/ split/ two volume/ Mode Volume /done. + V y l khun thi nn trn ming khun ti phn ming chai phi c ming cn d cha u thi v ct keo nn ta n thm phn c hnh dng cn cha du thi v ct keo 2.4.3) Bung cc th tch thnh cc phn t khun bng lnh Extract v m phng m khun kim tra ly sn phm: -Chn Mold componen / Extract / chn tt c cc phn t.

-Chn Mold Opening / Define Step / Define Move / Chn phn khun v

phng m khun ca phn t / Done.- To 4 l nh v v 6 l bt ming cn trn hai na khun nh hnh di:

Khun trn: Khun di:Bu qut:

Chng III: LP QUY TRNH CNG NGH GIA CNG 3.1) Phn tch kh nng cng ngh gia cng chi tit:

- Trong cc dng sn xut hng lot ln v hng khi, qui trnh cng ngh c xy dng theo nguyn tc phn tn hoc tp trung nguyn cng. Do mi my thc hin mt nguyn cng th qui trnh cng ngh c chia ra cc nguyn cng n gin c thi gian nhp nh nhau hoc bi s ca nhiu.

- Theo nguyn tc chung nguyn cng th qui trnh cng ngh thc hin trn my phay CNC MORISEIKI MITSUBISHI MELDAS t ng. Da vo nguyn tc trn ta phn loi phng n gia cng theo cc c im sau:

- Nguyn cng: Tm khun di c bc dn hng. - Dng sn xut: hng khi. - Gia cng nhiu v tr ng vi nhiu bc cng ngh. - Gia cng bng nhiu loi dao. - Phng php gia cng tun t.

y l dng sn xut hng lot va, chuyn mn ha cao v t nng sut cao trong iu kin Vit Nam ng li cng ngh thch hp l phn tn nguyn cng. y l my CNC kt hp vi g chuyn dng3.2) La chn my v nu cc thng s k thut ca my:La chn my phay :EMCO CONCEPTMILL- 450

b)Thng s k thut:Khng gian lm vic ca my

Gii hn khng gian lm vic theo phng X[mm]600

Gii hn khng gian lm vic theo phng Y[mm]500

Gii hn khng gian lm vic theo phng Z[mm]500

Khong lm vic hiu qu theo phng Z[mm]250

Bn my v dao

Kch thc bn my[mm]700520

Thi gian thay dao s8.2

ng knh dao ln nht[mm]80

Chiu di ln nht ca dao [mm]250

Thng s khc

Cng sut my kW13

Tc quay trc chnh[v/ph]50 (10000

Ngun cung cp [V,Hz]450V,50/60Hz

Tng trng lng my [Kg]4000

S trc 3

Cc h iu khin dng trong myFanuc/Siemens/ Heidenhain

3.3 La chn th t cc bc cng ngh, nguyn cng:- Ta nh s cc mt ca chi tit nh hnh sau:

- Tt c cc b mt u c gia cng bng phng php phay3.3.1 Trnh t gia cng: -Nguyn cng 1: Bc 1&2:+ Chn chun l mt s (4), kp cht mt s (5) + Phay th mt s (23)

+ Phay tinh mt s (23) t kch thc 1000,2 ; Ra 1,6m

Bc 3:+ Chn chun l mt s (4), kp cht mt s (5) + Phay th mt s (6) v (8) Bc 4:+ Chn chun l mt s (4), kp cht mt s (5) + Phay tinh mt s (6) v (8)

- Bc 5: + Chn chun l mt s (4), kp cht mt s (5)

+ Phay th mt s (3),(9),(10),(11),(12),(13)

Bc 6&7: + Chn chun l mt s (4), kp cht mt s (5)

+ Phay bn tinh bin dng mt s (9), (10), (11)+ Phay tinh mt s (9), (10), (11) t nhm Ra = 1,6m

Bc 8&9: + Chn chun l mt s (4), kp cht mt s (5)+ Phay bn tinh mt s (3), (12), (13)+ Phay tinh mt s (3), (12), (13) t nhm Ra = 1,6m

Bc 10: + Chn chun l mt s (4), kp cht mt s (5)+ Phay th mt s (1), (2)

Bc 11&12: + Chn chun l mt s (4), kp cht mt s (5)

+ Phay bn tinh mt s (1), (2)

+ Phay tinh mt s (1), (2) t nhm Ra = 1,6m

Bc 13&14: Khoan v doa 4 l nh v khun (15), (16), (17), (18), (19), (20), (21), (22) t kch thc (16mm

3.4 Lu chn dao v cc thng s cng ngh cho cc bc cng ngh v nguyn cng:3.4.1 Nguyn cng 1:Bc 1&2: Phay th kt hp phay tinh mt u:

a. Chn dao:

Hnh 3.5: Dao phay mt u

Bng 4.1: Thng s kch thc ca mt s dao phay mt u

Thng s ca dao:

M Dao: APX3000-032A05RA

Hng Dao: MITSUBISHI TOOL

Kiu hnh hc dao: trn

D1 = 32 mm D8 = 9 mm D9 = 16mm D11 = 14mm D12 = 30mm

L1 = 40 mm L7 = 18mm L8 = 5.6mm

Loi : 1

S li ct: Z = 5

c. Lng d gia cng:

Lng d gia cng sau phay th Zn = 0.5 mm

Lng d gia cng sau phay tinh Zn = 0.01 mm.d. Ch ct:

Ta tra theo bng thng s ca nh sn xut a ra ta chn c cc thng s ca ch ct xem chi tit bng 4.2.

Bng 4.2: Cc thng s ch ct:

Vi vt liu gia cng l thp kt cu thng c cng l 270HB, ng knh dao phay mt u l D1 = 32 mm. Theo Bng 4.5 ta c cc thng s cng ngh nh sau:

Ta c:

- Tc quay trc chnh:n = (vg/pht)

- Tc ct:

Vc = (m/pht)

+ Lng chy dao pht: Vf = fz . n . Z (mm/pht)

Vn tc trc chnh:

n = 1691 vng/pht (phay th)

n = 1990 vng/pht (phay tinh)

Vn tc ct:

Vc = 170 m/pht (phay th)

Vc = 200 m/pht (phay tinh)

Vn tc chy dao:

Vf = 1691 mm/pht (phay th)

Vf = 1492 mm/pht (phay tinh)

Lng gia cng:

fz = 0.20 mm/rng (phay th)

fz = 0.15 mm/rng (phay tinh)

Chiu su ct:

ap = 3 mm (phay th)

ap = 1 mm (phay tinh)

Lng n dao ngang:

ae = 0,5D1 = 16 mm (phay th) ae = 0,25 D1 =8mm (phay tinh)

Ch lm mt: dng t Cng sut ct:

KWBng 4.6: Tra cng sut ct trn trang web ca hng MITSUBISHI:

Khi phay th: =3,04KWKhi phay tinh: =0,45KWBc 3&4: Phay th kt hp phay tinh bin dng mt s (6),(8)a. Chn dao:

*./ Phay th:

Thng s ca dao:

M Dao: VFSFPRD1200


D1 = 12 mm D4 = 12 mm L1 = 75 mm

Loi : 2

S li ct: N= 4

*./ Phay tinh:

Thng s ca dao:

M Dao: MS4SCD1000


D1 = 10 mm D4 = 10 mm L1 = 70 mm

Loi : 2

S li ct: N= 4

b. S g t:

Ging bc 1

c. Lng d gia cng:

Lng d gia cng sau phay th Zn = 1 mm

d. Ch ct:

Ta c:


- Tc ct:

Vc = (m/pht)

+ Lng chy dao pht:Vf = fz . n . N (mm/pht)

Vn tc trc chnh:

n = 2650 vng/pht (phay th)

n = 3820vng/pht (phay tinh)

Vn tc ct:

Vc = 100 m/pht (phay th)


Vn tc chy dao:

Vf = 640 mm/pht (phay th)


Lng gia cng:

fz = 0.06 mm/rng (phay th)


Chiu su ct:

ap = 2 mm (phay th)


Lng n dao ngang:

ae = 4 mm (phay th)

ae = 2 mm (phay tinh)

Ch lm mt: dng kh

Cng sut ct:

KW Theo bng 4.6 ta c:Khi phay th: =0,34KW. Khi phay tinh: =0,11KWBc 5: Phay th cc b mt cong lng khun, mt s (3),(9), (10), (11), (12), (13)

Chn s hiu dao VC3LBR1000 c :

+ S li ct N:3

+ ng knh dao D1: 20 mm

+Chiu di dao L1:250mm

+Bn knh u dao R: 3 mm Cc thng s cng ngh

+Vn tc ct:

Vc = 170 m/pht

+Vn tc trc chnh:

n == 2750 vng/pht

+Lng chy dao rng:

fz = 0.07 mm/rng

+Vn tc chy dao:

Vf = fz . Z.n= 0.07.3.2750 = 578mm/pht

+Lng d gia cng: Zn=1mm Bc 6&7: Phay bn tinh v phay tinh b mt s (9), (10), (11):

*./ Phay bn tinh:

Thng s ca dao:

M Dao: VC3LBR0400


D1 = 8 mm L1 = 150 mm

Loi : 3 S li ct: N= 3*./ Phay tinh:Thng s ca dao:

M Dao: VC3LBR0300 Hng Dao: MITSUBISHI TOOL

D1 = 6 mm L1 = 140 mm

Loi : 2

S li ct: N= 3 b. S g t:

Ging bc 1

c. Lng d gia cng:

Lng d gia cng sau phay bn tinh Zn = 0.5 mm

Lng d gia cng sau phay tinh Zn = 0.01 mm

d. Ch ct:

Ta c:


- Tc ct:

Vc = (m/pht)


Vn tc trc chnh:

n = 3978 vng/pht (phay bn tinh)


Vn tc ct:

Vc = 100 m/pht (phay bn tinh)Vc = 120 m/pht (phay tinh)

Vn tc chy dao:

Vf = 715 mm/pht (phay bn tinh)


Lng gia cng:

fz = 0.06 mm/rng (phay bn tinh)


Chiu su ct:

ap = 2 mm (phay bn tinh)


Lng n dao ngang:

ae = 3 mm (phay bn tinh)


Ch lm mt: dng kh

Cng sut ct:

KW Theo bng 4.6 ta c:Khi phay bn tinh: =0,18KW. Khi phay tinh: =0,08KW Bc 8&9: Phay bn tinh v phay tinh b mt s (3), (12), (3):

*./ Phay bn tinh:

Thng s ca dao:

M Dao: VC3LBR0600


D1 = 12 mm L1 = 200 mm

Loi : 1 S li ct: N= 3*./ Phay tinh:Thng s ca dao:

M Dao: VC3LBR0500 Hng Dao: MITSUBISHI TOOL

D1 = 10 mm L1 = 180 mm

Loi : 1 S li ct: N= 3 b. S g t:

Ging bc 1

c. Lng d gia cng:

Lng d gia cng sau phay bn tinh Zn = 0.5 mm

Lng d gia cng sau phay tinh Zn = 0.01 mm

d. Ch ct:

Ta c:


- Tc ct:

Vc = (m/pht)


Vn tc trc chnh:

n = 3180 vng/pht (phay bn tinh)


Vn tc ct:

Vc = 120 m/pht (phay bn tinh)


Vn tc chy dao:

Vf = 512 mm/pht (phay bn tinh)


Lng gia cng:

fz = 0.06 mm/rng (phay bn tinh)


Chiu su ct:

ap = 2 mm (phay bn tinh)


Lng n dao ngang:

ae = 3 mm (phay bn tinh)


Ch lm mt: dng kh

Cng sut ct:

KW Theo bng 4.6 ta c:Khi phay bn tinh: =0,12KW. Khi phay tinh: =0,05KWBc 10&11&12: Phay th kt hp phay bn tinh v phay tinh bu qut:a. Chn dao:

*./ Phay th:

Thng s ca dao:

M Dao: VFSFPRD1200


D1 = 12 mm D4 = 12 mm L1 = 75 mm

Loi : 2

S li ct: N= 4

*./ Phay bn tinh:

Thng s ca dao:

M Dao: MS4SCD1000


D1 = 10 mm D4 = 10 mm L1 = 70 mm

Loi : 2

S li ct: N= 4

*/ Phay tinh:

Thng s ca dao:

M Dao: MS4SCD0800


D1 = 8 mm D4 = 10 mm L1 = 60 mm

Loi : 2

S li ct: N= 4 b. S g t:

Ging bc 1

c. Lng d gia cng:

Lng d gia cng sau phay th Zn = 1 mm

d. Ch ct:

Ta c:


- Tc ct:

Vc = (m/pht)


Vn tc trc chnh:

n = 2650 vng/pht (phay th)n = 3820 vng/pht (phay bn tinh)


Vn tc ct:

Vc = 100 m/pht (phay th)Vc = 120 m/pht (phay bn tinh)Vc = 150 m/pht (phay tinh)

Vn tc chy dao:

Vf = 742 mm/pht (phay th) Vf = 920 mm/pht (phay bn tinh) Vf = 1195 mm/pht (phay tinh)

Lng gia cng:

fz = 0.07 mm/rng (phay th)fz = 0.06 mm/rng (phay bn tinh)fz = 0.05 mm/rng (phay tinh)

Chiu su ct:

ap = 3 mm (phay th)ap = 2 mm (phay bn tinhap = 1 mm (phay tinh)

Lng n dao ngang:

ae = 4 mm (phay th)ae = 3 mm (phay bn tinh)ae = 2 mm (phay tinh)

Ch lm mt: dng kh

Cng sut ct:

KW Theo bng 4.6 ta c:Khi phay th: =0,35 KWKhi phay bn tinh: =0,20 KWKhi phay tinh: =0,09 KWBc 13: Khoan 8 l nh v + Mi khoan MWE1580MB c cc thng s nh bng sau:

Cc thng s ct:

+ Tc ct : Vc = 90 (m/pht).

+ Suy ra s vng quay trc chnh l: n = 1791 vng/pht.

+ Lng chy dao vng : Sv = 0.3 (mm/vng).

+ Lng chy dao pht : Sph = 537 (mm/pht).Bc 7 :Doa 8 l nh v t kch thc (16 mm.Dng c ct : PM50-16H7-EB

+ Ch ct:

- Vn tc ct : Vc= 80 m/ph

- Vn tc trc chnh : n =

- fz = 0.04 mm/rng

- Vf = 398 mm/pht Chng IV: LP TRNH GIA CNG4.1) S dng phn mm Pro Engineer 2001 thc hin cc bc cng ngh, nguyn cng gia cng chi tit trn my tnh:

4.1.1) To phi chi tit: u tin ta to mi trng lm vic mi cch chn NEW trn thanh menu,hp thoi NEW xut hin hy chn mc Manufacturing trong mc Type, NC-Assembly trong mc Sub-Type,nhp GIA-CONG vo dng lnh Name sau chn OK kt thc khai bo.

- Tip theo gi chi tit bng cch chn MfgModel > Assembly >Ref Model trn thanh menu. Hp thoi Open xut hin hy chn chi tit khuon_duoi sau chn Open m file. Bc tip theo hy chn tn khi bao trm chi tit bng cch chn Create > Workpiece trn thanh menu.-Dng lnh Enter Part name xut hin hy nhp tn khi l Phoi sau Enter chp nhn

-To khi bao trm bng cch chn:Protrusion > Extrude > Solid > Done > One Side > Done theo kiu n ra mt bn .

-Bc tip theo thit lp dao:chn Done/Return > Mfg Sutup trn thanh menu.hp thoi Operation Setup xut hin hy chn mc NC Machine nh hnh:

-Hp thoi Machine Setup xut hin vi cc tu chn dao v my:

Ta khai bo y cc thng s nh sau:

-Machine name: EMCO CONCEPTMILL- 450

-Machine type :mill

-Number of Axes:3 axis

-Spindle:

+ Maximum:10000 RPM

-Travel

4.1.2) Phay cc mt:Nguyn cng 1:

- To gc ta phi: Create > 3 Planes >Done >Chn 3 mt v phng ca cc trc x, y, z >Done Oper.

Bc 1: Phay mt u

Phay th mt u :-Gia cng bc u tin bng cch chn Maching > NC Sequence > Face > Done . Trong Menu SEQ SETUP tu chn Tools, Parametets v Surface\Done. Lc ny ca s EMCO-450 Tools Setup m ra .Nhp cc thng s nh hnh :

-Sau khi ca s Param Tree c ng li ta chn Done\ Model, lc ny chn mt trn ca phi,xong Done Sel\Done Return. Nhn Play Path\Screen Play xem ng chy dao .Nhn NC check xem kt qu

Bc 2: Phay tinh mt u

Bc 3&4: Phay bin dng s (6),(8)-T ManuFacture\NC Sequence\New Sequenc, trn Menu MACH AaX\\Profile, lc ny trn Menu SEQ SETUP tu chn Tool, Parameters, Surfaces\Done

* Phay th : - Cc thng s v dao v ch ct chn nh hnh:

Ngoi ra cn c cc thng s nh:-NUM_PROF_PASSE: S ln n dao ngang. -PROF_INCREMENT: bc n dao ngang. (50-75 % ng knh dao).-PROF_STOCK_ALLOW: Lng d li mt bn.

*/ Khi phay tinh

V g vo bng parameters cc thng s sau:

-Cut Feed: 120-Step Depth: 1-NUM_PROF_PASSE: 2-PROF_INCREMENT: 2-PROF_STOCK_ALLOW: 0.01

-Spindle_speed : 3820

Kt qu l:

Bc 5: Phay ph cc b mt lng khun:

- T ManuFacture\NC Sequence\New Sequenc, trn Menu MACH AaX\ profile\Done, lc ny trn Menu SEQ SETUP tu chn Tool, Parameters,Surface\Done- Cc thng s v dao v ch ct chn nh hnh:

Kt qu l:

Bc 6&7: Phay bn tinh v phay tinhmt s 9, 10, 11:- T ManuFacture\NC Sequence\New Sequenc, trn Menu MACH AaX\ Surface mill\Done, lc ny trn Menu SEQ SETUP tu chn Tool, Parameters,Surface\Define cut\ Done- Cc thng s v dao v ch ct chn nh hnh:

*/ Khi phay bn tinh:

*/ Khi phay tinh

Kt qu ta cng c nh sau:

Bc 8&9: Phay bn tinh v phay tinhmt s 2, 12, 13:- T ManuFacture\NC Sequence\New Sequenc, trn Menu MACH AaX\ Surface mill\Done, lc ny trn Menu SEQ SETUP tu chn Tool, Parameters,Surface\Define cut\ Done- Cc thng s v dao v ch ct chn nh hnh:

*/ Khi phay bn tinh:

*/ Khi phay tinh:

Kt qu ta s nhn c l:

Bc 10&11&12: Phay th, bn tinh, tinh bu qut :

- T ManuFacture\NC Sequence\New Sequenc, trn Menu MACH AaX\ Volume\Done, lc ny trn Menu SEQ SETUP tu chn Tool, Parameters,Volume\ Done.

- V gii hn s trang ca n nay em ch trnh by cc thng s ca phay tinh, v hnh nh minh ha.

- Cc thng s dao v bng parameters.

Kt qu ca cc qu trnh gia cng nh hnh di y:

Bc 13: Khoan 4 l nh v t kch thc (15.8 mmMachining > NC Sequence > New Sequence > Holemaking > Drill > Done > Tool, Parameters, Retract, Holes > Done.- Xut hin bng thng s dao v ch cng ngh. Nhp vo cc kch thc ph hp vi vic gia cng nh hnh di y:

- Xut hin hp HOLE SET. Chn tab Diameters > Add > Chn 16 > OK > OK > Done/Return.

- Play path > NC Check > Display > Run xem kt qu Bc 14: Doa 4 l nh v t kch thc (16 mmMachining > NC Sequence > New Sequence > Holemaking > Drill > Done > Tool, Parameters, Retract, Holes > Done.- Xut hin bng thng s dao v ch cng ngh. Nhp vo cc kch thc ph hp vi vic gia cng nh hnh di y

- Xut hin hp HOLE SET. Chn tab Diameters > Add > Chn 16 > OK > OK > Done/Return.

- Play path > NC Check > Display > Run xem kt qu

4.2) Xut chng trnh gia cng:

- Chn Machining >CL Data > Select Set t menu OUTPUT > Create > chn

nguyencongkhuonduoi > Done Sel > Chn Set t menu SELECT SET > Done.

- Chn File t menu Path > Chn done t OUTPUT TYPE > OK > chp nhn tn file mc nh l nguyencongkhuontren.ncl > chn Done Output xut file NCL

- Chn NC Check > file > chn nguyencongkhuontren > Open > Post Process > Chn nguyencongkhuontren.ncl > Open > Done > Chn tn UNCX01.12 > Done to file nguyencongkhuontren.tap

Sau y l chng trnh gia cng:

Mt on chng trnh GC khun trn:N5 G71

N10 (GIACONGCHITIET)

N15 G0 G17 G99

N20 G90 G94

N25 G0 G49

N30 T1 M06

N35 S1691 M03

N40 G0 G43 Z20. H1

N45 X120.951 Y-216.666

N50 Z10.

N55 G1 Z2. F170.

N60 X-120.951

N65 X-145.245 Y-201.19

N70 X145.245

N75 X164.575 Y-185.714

N80 X-164.575

N85 X-180.535 Y-170.238

N90 X180.535

N95 X193.966 Y-154.762

N100 X-193.966

N105 X-205.363 Y-139.286

N110 X205.363

N115 X215.046 Y-123.809

N120 X-215.046

N125 X-223.245 Y-108.333

N130 X223.245

N135 X230.112 Y-92.857

N140 X-230.112

N145 X-235.768 Y-77.381

N150 X235.768

N155 X240.295 Y-61.905

N160 X-240.295

N165 X-243.759 Y-46.429

N170 X243.759

N175 X246.204 Y-30.952

N180 X-246.204

N185 X-247.657 Y-15.476

N190 X247.657

N195 X248.143 Y0.

N200 X-248.143

N205 X-247.657 Y15.476

N210 X247.657

N215 X246.204 Y30.952

N220 X-246.204

N225 X-243.759 Y46.429

N230 X243.759

N235 X240.295 Y61.905

N240 X-240.295

N245 X-235.768 Y77.381

N250 X235.768

N255 X230.112 Y92.857

N260 X-230.112

N265 X-223.245 Y108.333

N270 X223.245

N275 X215.046 Y123.809

N280 X-215.046

N285 X-205.363 Y139.286

N290 X205.363

N295 X193.966 Y154.762

N300 X-193.966

N305 X-180.535 Y170.238

N310 X180.535

N315 X164.575 Y185.714

N320 X-164.575

N325 X-145.245 Y201.19

N330 X145.245

N335 X120.951 Y216.666

N340 X-120.951

N345 Z20.

N350 G0 X120.951 Y-216.666

N355 Z7.

N360 G1 Z-1. F170.

N365 X-120.951

N370 X-145.245 Y-201.19

N375 X145.245

N380 X164.575 Y-185.714

N385 X-164.575

N390 X-180.535 Y-170.238

N395 X180.535

N400 X193.966 Y-154.762

N405 X-193.966

N410 X-205.363 Y-139.286

N415 X205.363

N420 X215.046 Y-123.809

N425 X-215.046

N430 X-223.245 Y-108.333

N435 X223.245

N440 X230.112 Y-92.857

N445 X-230.112

N450 X-235.768 Y-77.381

N455 X235.768

N460 X240.295 Y-61.905

N465 X-240.295

N470 X-243.759 Y-46.429

N475 X243.759

N480 X246.204 Y-30.952

N485 X-246.204

N490 X-247.657 Y-15.476

N495 X247.657

N500 X248.143 Y0.

N505 X-248.143

N510 X-247.657 Y15.476

N515 X247.657

N520 X246.204 Y30.952

N525 X-246.204

N530 X-243.759 Y46.429

N535 X243.759

N540 X240.295 Y61.905

N545 X-240.295

N550 X-235.768 Y77.381

N555 X235.768

N560 X230.112 Y92.857

N565 X-230.112

N570 X-223.245 Y108.333

N575 X223.245

N580 X215.046 Y123.809

N585 X-215.046

N590 X-205.363 Y139.286

N595 X205.363

N600 X193.966 Y154.762

N605 X-193.966

N610 X-180.535 Y170.238

N615 X180.535

N620 X164.575 Y185.714

N625 X-164.575

N630 X-145.245 Y201.19

N635 X145.245

N640 X120.951 Y216.666

N645 X-120.951

N650 Z20.

N655 G0 X120.951 Y-216.666

N660 Z4.

N665 G1 Z-4. F170.

N670 X-120.951

N675 X-145.245 Y-201.19

N680 X145.245

N685 X164.575 Y-185.714

N690 X-164.575

N695 X-180.535 Y-170.238

N700 X180.535

N705 X193.966 Y-154.762

N710 X-193.966

N715 X-205.363 Y-139.286

N720 X205.363

N725 X215.046 Y-123.809

N730 X-215.046

N735 X-223.245 Y-108.333

N740 X223.245

N745 X230.112 Y-92.857

N750 X-230.112

N755 X-235.768 Y-77.381

N760 X235.768

N765 X240.295 Y-61.905

N770 X-240.295

N775 X-243.759 Y-46.429

N780 X243.759

N785 X246.204 Y-30.952

N790 X-246.204

N795 X-247.657 Y-15.476

N800 X247.657

N805 X248.143 Y0.

N810 X-248.143

N815 X-247.657 Y15.476

N820 X247.657

N825 X246.204 Y30.952

N830 X-246.204

N835 X-243.759 Y46.429

N840 X243.759

N845 X240.295 Y61.905

N850 X-240.295

N855 X-235.768 Y77.381

N860 X235.768

N865 X230.112 Y92.857

N870 X-230.112

N875 X-223.245 Y108.333

N880 X223.245

N885 X215.046 Y123.809

N890 X-215.046

N895 X-205.363 Y139.286

N900 X205.363

N905 X193.966 Y154.762

N910 X-193.966

N915 X-180.535 Y170.238

N920 X180.535

N925 X164.575 Y185.714

N930 X-164.575

N935 X-145.245 Y201.19

N940 X145.245

N945 X120.951 Y216.666

N950 X-120.951

N955 Z20.

N960 G0 X120.951 Y-216.666

N965 Z1.

N970 G1 Z-7. F170.

N975 X-120.951

N980 X-145.245 Y-201.19

N985 X145.245

N990 X164.575 Y-185.714

N995 X-164.575

N1000 X-180.535 Y-170.238

N1005 X180.535

N1010 X193.966 Y-154.762

N1015 X-193.966

N1020 X-205.363 Y-139.286 Chng V: M PHNG GIA CNG5.1) M phng bc gia cng phay ca nguyn cng 1:

nhn thy dao chy v qu o dao di dng khung dy ta thc hin nh sau:

- Machining > NC Sequence > Trong NC SEQ LIST ln lt chn

Face Milling , Volume Milling, Surface Milling

- Play Path> Screen Play > Done

ng chy dao c to ra nh hnh di: 5.2) M phng ton b nguyn cng:

- Chn CL Data > Input > Chn file gia cng NCL cn chy > OK

- Chn Tool > Done chng trnh bt u gia cng

- Chn NC Check > Run m phng di dng Solid.

TI LIU THAM KHO[1]. Thit k v ch to khun mu vi Pro/engineer wildfifre 2.0

[2]. Gs.Ts. Trn Vn ch : Thit k n cng ngh ch to my Nh XB khoa hc k thut -2005.

[3]. Gs.Ts. Trn Vn ch(Ch bin) : Cng ngh ch to my Nh XB khoa hc k thut ,2005.

[4]. Gs.TS. Nguyn c Lc(ch bin): S tay cng ngh ch to my- Tp 1,2- Nh XB khoa hc k thut- 2005.

[5]. Chu Mnh Lc_Pham Vn Song: Trang b cng ngh v cp phi t ng-i hc bch khoa-Khoa C kh.

[6]. Pgs.Pts. L Vn Tin(Ch bin): g c kh ha v t ng ha- Nh XB khoa hc k thut

SVTH: H S Nam - 09CDT2 trang: 56

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