napcam dien bao cao thi nghiem khuon mau

7/31/2019 NAPCAM DIEN Bao Cao Thi Nghiem Khuon Mau

1/22

Th nghim khun mu

GVHD:NGUYN VN SN Page 1

ti:NG DNG PHN MM PRO/ENGINEER WILDFIRE 4.0THIT K KHUN NP CM IN I 2 CHU

NHM THC HIN1. Trn Vn Cng - 071030142. Cao Minh c - 07103027

NI DUNG BO COI.Sn phmII. Chn vt liu v thng s ca vt liuIII. Bdy sn phmIV. M phng dng chy ca nha trong qu trnh p phunV. Tch khun v p thVI. Kim tra gc thot khun

VII. Gia cng lng khun


2/22

Th nghim khun mu


I. Sn phm1.Gii thiu:- Tn sn phm: NP CM INI 2 CHU

Hnh 1.1-Np cm l thit b bao bn ngoi cm in nhm mc ch cch ly mi trng lm

vic ca cm vi bn ngoi bo v ngi s dng v tng tnh thm m cho sn phm.2.Cc bc thit k sn phm- u tin khi ng phn mmPro/ENGINEER Wildfire 4.0, to file Partmi, t tn

l san_phamchn n v mms_part_solid. Sn phm c thit k theo cc bc di y: - Bc 1: To mt khi c tit din nh hnh 1.2, n 45mm v hai pha, ta c nh

hnh 1.3.

Hnh 1.2 Hnh 1.3

- Bc 2: Dng lnh draft surface to gc nghing 2

0

thot khun cho 4 mt bnnhhnh 1.4

Hnh 1.4- Bc 3: Dng lnh hole, to l bc c kch thc nh hnh 1.5, v tr ca lnh hnh

1.6

Hnh 1.5 Hnh 1.6


3/22

Th nghim khun mu


- Bc 4: Dng Round bo cc cnh nh trnhnh 1.7 vi bn knh bo l 2mm

Hnh 1.7 Hnh 1.8- Bc 5: Dng Shell khot rng bn trong vi chiu dy l 1mm, nh hnh 1.8- Bc 6: Cng Cut Extrude khot sut l bt vt 3.5mm.

- Bc 7: To mt cha cc l cm bng lnh Extrude, chn phng n n l ToSelect, vi mt phng v phc l mc phng DTM1 nm song song v cch mt thp nhtca sn phm 20mmnh hnh 1.9, tit din nh hnh 1.10

Hnh 1.9

Hnh 1.10- Bc 8: Khot 4 l cm, dng Cut Extrude tit din nh hnh 1.11, ta c sn phm

nh hnh 1.12


4/22

Th nghim khun mu


Hnh 1.11 Hnh 1.12- Bc 9: To vng lm xung quanh 4 l cm, dng Cut Extrude tit din nh hnh

1.13, ta c sn phm nh hnh 1.14

Hnh 1.13 Hnh 1.14- Bc 10: Dng round bo trn cc cnh nh trn hnh 1.15 vi bn knh bo l 0,5mm

Hnh 1.15- Bc 11: To gn tng cng cho lng trong sn phm. u tin, to gn bn tri trc,

tit din nh hnh 1.17, c sn phm nh hnh 1.18

Hnh 1.17 Hnh 1.18Tip theodng lnh mirror to bn gn cn li, ta c nh hnh 1.19


5/22

Th nghim khun mu


Hnh 1.19- Bc 12: To b phn ngn cch 2 cc in, dng extrude c tit din nh hnh 1.20

trn mt phng v phc l mt trn ca gn tng cng ta c sn phm nh hnh 1.21, vichiu di n nh hnh 1.22, mt bn chn To Select ti mt di ca mt cong

Hnh 1.20 Hnh 1.21

Hnh 1.22

II. Chn vt liu nha v thng s ca vt liuCc loi nha thng dng hin nay l: Polypropylene (PP), Polyethylene (PE),

Polystyrene (PS), Styrene co-polymers (ABS) Trong , nha ABS l loi nha k thutchu mi mn cao, chng va p, bn chc, cch in h th. V vy, chn nha ABS lmvt liu cho sn phm trn.

Cc thng s ca nha ABS: ( theo sch THIT K KHUN CHO SN PHMNHA- 1994 - V Hoi n)

- Nhit khun: 10oC - 80oC- Nhit cui piston vit: 220oC -235oC- Nhit ph hy (ra nt): 310oC- co rt: 0.4% - 0.7%- Nha ABS d b oxy ha trong khun nu gin on sn xut qu 15 pht.

III. Bdy sn phmMt ctca sn phm th hin b dy ln nht, nh nht ca sn phm.


6/22

Th nghim khun mu


Hnh 3.1: B dy ln nht v nh nht ca sn phm B dy nht ca sn phm l phn cha bn l ca cm, b dy nh nht ca sn phm

l cc thnh bn, v thnh l bt vt, nh hnh 3.1Kim tra b dy chi tit: menu Analysis/ Model/ thich ness, chn tit din ct ngang l

tit din nh hnh 3.1-Nhp b dy l MAX l 4.5, MIN l 4, phn mm thng bo chi tit khng c ch

no dy hn 4.5mm, nhng c chiu dy ln hn 4mm, nh hnh 3.2vi din tch b mt l247,318638

-Nhp b dy 3mm, kt qu cnh hnh 3.3, thng bo c mt phn din tch lnhn 3mm

Hnh 3.2 Hnh 3.3

IV. M phng dng chy ca nha trong qu trnh p phunbng Moldflow


7/22

Th nghim khun mu


Kt qu phn tch bng phn mm Moldflow:- Qu trnh in y:

- Biu lc kp:

- ng hn:

- L kh:

- Hngchyca dng nha


8/22

Th nghim khun mu


V. Tch khun v p th:- u tin khi ng phn mm Pro/ENGINEER Wildfire 4.0, to fileManufacturing

mi vi sub-type lMold Cavity, t tn lMold_openingchn h n v mms_mfg_mold.Sn phm c tch theo cc bc di y:

- Bc 1: a chi tit vo mi trng Pro/Mold, thit lp s lng khun l 4, hiu chnhsao cho 4 sn phm quay v cng mt hng theo hng tch khun, nh hnh 5.1

Hnh 5.1- Bc 2: To phi bng cch to phi t ngvi cc thng s nh hnh 5.2, ta c

sn phm nh hnh 5.3

Hnh 5.2 Hnh 5.3- Bc 3: Nhp h s co rt ca vt liu l 0,05%- Bc 4: To mt phn khun

- Chn Parting Surface, ta c 4 mu sn phm, chn copy cc b mt bao bn ngoi

ca 1 sn phm, sau paste ln chnh v tr nh hnh 5.4. Nhng v trn b mt c ccl cmlm cho b mt b thngnn phi trm cc l ny li bng cch m tab Option vchnExclude surfaces and fill holes nh hnh 5.5, sau chn 5 tit din cn trm li , tac nh hnh 5.6


9/22

Th nghim khun mu


Hnh 5.4 Hnh 5.5

Hnh 5.6- Tng t, to cc surfacecho 3 sn phm cn li. bc ny, ta cn c th dng

lnh Mirror thc hin. Ta c nh hnh 5.7

Hnh 5.7- To mt Fill bng cch vo menu Edit/Fill, chn mt phng v phc l mt i qua

chn ca np cm c secsion nh hnh 5.8, ta c nh hnh 5.9


10/22

Th nghim khun mu


Hnh 5.8 Hnh 5.9- Merge 4 mt ca 4 sn phm vi mt Fill ta c mt phn khunth nhtbng

cch chn c 5 mt ri vo menu Edit/Merge- To mt phn khn th hai trn chia cc tm khun, mt ny cch mt phn

khun 20mm theo hng tch khunbng lnh Extrude.- Bc 5: To cc tm lng khun- Chia hm khun thnh hai phn trc, chn Volume Split trn thanh cng c, chn

Two Volume chia thnh 2 phn v All Work pieces ct c hm khun. Chn mtphng ct l mt phn khun, t tn phn di l TAM_DUOI(Hnh 5.10), phn trn lTIEP.

- Tip tc chiaTIEPthnh hai phn, chn Volume Split trn thanh cng c, chnTwo Volume chia thnh 2 phn v Mold Volume, chn phn tn TIEP ct,t tn

phn trn l TAM_TREN(Hnh 5.11) vphn di l TAM_GIUA (Hnh 5.12)- Extract cc tm khun ra, trong menu MOLD chn Mold Comp/Extract chn cc

tm mun extract ra.

Hnh 5.10 Hnh 5.11

Hnh 5.12- Bc 6: M khun


11/22

Th nghim khun mu


Trong menu MOLD chn Mold Opening/ Define step/ Define move, xc nh chiuv gi tr di chuyn ca cc tm ta c nh hnh 5.13 v hnh 5.14

Hnh 5.13 Hnh 5.14- Bc 6: p th

- Thit lp h thng knh dn nha, sau dng Moding p th c sn phmnh hnh 5.15

Hnh 5.15VI. Kim tra gc thot khunTrong menu Mold/Mold Opening/Define Step/ chn Draft check, sau khi phn tch vi

gc draft l 2

o

, ta c kt qu nh hnh 6.1


12/22

Th nghim khun mu


Hnh 6.1T kt qu phn tch, ta thy cc thnh ng, gn u tha mn gc thot khun.

VII. Gia cng lng khun7.1. Quy trnh cng ngh gia cng TAM_DUOI- Bc 1: gia cng th- Bc 2 : gia cng bn tinh- Bc 3 :Gia cng tinhv nh bng lng khun Bc gia cng th :- Khi ng Pro Engineer / manufacturing / NC assembly- a tm di vo mi trng lm vic ca Pro Engineer- To phi cho tm di

Hnh 7.1 phi ca tm di


13/22

Th nghim khun mu


- Chn my v chn chun

Hnh 7.2 chn my , chn chun- Chn phng php gia cng : gia cng bng phng php pocketing ( phng

php ny gia cng c c bin dng mt bn v mt y ) .+ chn dao :

Hnh 7.3 chn dao+ Chn ch ct :

Hnh7.4 ch ct


14/22

Th nghim khun mu


- Chn bin dng gia cng

Hnh 7.5 Chn bin dng gia cng- Tin hnh gia cng

Hnh 7.6 gia cng th Gia cng bn tinh : bng phng php :surface Mill ( gia cng mt y )- Dng my cc dng c ct nh ch gia cng th

hnh 7.7 dao


15/22

Th nghim khun mu


Chn ch ct :

Hnh 7.8bng ch ct gia cng bn tinh- Tin hnh gia cng :

Hnh 7.9 gia cng bn tinh Bc 3 : gia cng tinh- Chn my v chun nh cc bc trn :- Chn phng php gia cng finishing

+ chn dao :


16/22

Th nghim khun mu


Hnh 7.9 dao gia cng tinh+ Chn ch ct :

Hnh 7.10 ch ct gia cng tinh+ tin hnh gia cng tinh :


17/22

Th nghim khun mu


Hnh 7.11 gia cng tinh tm di .- Tin hnh nh bng b mt

7.2 Quy trnh cng ngh gia cng TM _GIA :Bc 1 : gia cng thBc 2 : Gia cng tinhv nh bng lng khun .

Gia cng th : Tng t nh gia cng tm di ta cng tin hnh a tm giavo mi trng lm vic , tin hnh to phi , chn my chn chun :

Hnh nh phi tm gia


18/22

Th nghim khun mu


Hnh 7.2 chun , my- Chn phng php gia cng : gia cng bng phng php pocketing ( phng

php ny gia cng c c bin dng mt bn v mty ) .+ chn dao :

Hnh 7.3 :Dao ph Hnh 7.4 ch ct


19/22

Th nghim khun mu


Chn bin dng gia cng :

Hnh 7.5 bin dng gia cng- Tin hnh gia cng :

Hnh 7.6 gia cng thBc 2 : gia cng bn tinh :

Gia cng bn tinh : bng phng php :surface Mill ( gia cng mt y )- Dng my cc dng c ct nh ch gia cng th- Chn dao :


20/22

Th nghim khun mu


hnh 7.7 dao bn tinh

- Chn ch ct :

Hnh 7.8 ch ct bn tinh- Tin hnh gia cng


21/22

Th nghim khun mu


Hnh 7.9 gia cng bn tinh

Bc 3 :chn phng php gia cng finish- Chn dao

Hnh 7.7 dao tinh-Ch ct


22/22

Th nghim khun mu

-Hnh 7.8 ch ct .

Tin hnh gia cng :

Hnh 7.9 gia cng tinh- dng tia laser lm tinh bin dng ca cc rnh gn . -Tin hnh nh bng lng khun

napcam dien bao cao thi nghiem khuon mau

Documents