Báo Cáo Môn Học Cad Cam Cnc

Bo co mn hc CAD CAM CNC

Sinh vin thc hin: L Thanh Tng CK08TKM Page 1

BO CO MN HC

CAD CAM CNC

Sinh vin thc hin: L Thanh Tng

MSSV: 20802534



LI NI U

Cng vi pht trin ca t nc trn con ng i mi, ngnh c kh ni chung, ngnh

k thut ch to ni ring cng c nhng tin trin v ng gp nht nh cho s pht

trin chung.

Tuy nhin, khoa hc ngy cng pht trin, khi nhng phng tin gia cng truyn

thng khng th p ng c nhng yu cu cng ngh th mt gii php mi trong ngnh

c kh c a ra l cng ngh CAD/CAM/CNC. Tuy trn th gii cng ngh ny khng cn

mi m, nhng hin nay n vn l gii php tt nht cho nhiu bi ton cng ngh.

Do tnh ng dng cao trong thc t nn mn hc CAD/CAM/CNC c a vo mt

trong nhng mn ging dy chnh trong ngnh k thut ch to ca i hc Bch khoa

TP.HCM. trng vi s hng dn tn tnh ca qu thy c, sinh vin chng em tip

thu v c kt c nhiu kinh nghim qu bo v cng ngh ny.

L mt phn quan trng trong qu trnh ging dy, mi sinh vin chng em u t lm

mt bi tp ln. Qua , da vo nhng kin thc bit v mn hc, chng em c th t

thit k mt quy trnh cng ngh hon thnh mt sn phm c kh bng cng ngh

CAD/CAM/CNC. Bi tp ln nh l mt bi ton thc t, chng em phi t a ra nhng

phng n ti u gii quyt. Tuy nhin, cng khng th hon thnh c bi tp ny nu

thiu s hng dn tn tnh ca qu thy c.

V kinh nghim cha cn yu, nn c s sai st l khng th trnh khi, em knh mong

qu thy c xem xt bi tp v hng dn chng em nhng phng n tt hn.

Hon thnh bi tp mn CAD/CAM/CNC l l yu cu bt buc i vi mi sinh vin

hoc mn CAD/CAM/CNC. Trong qu trnh thc hin em nhn ra c tnh hu ch ca bi

tp ny gip sinh vin cng c nhng kin thc hc v qua c nhng kh nng:

ng dng phn mm CAD xy dng m hnh 3D ca chi tit cn gia cng.

S dng phn mm CAM gia cng chi tit xy dng m hnh 3D.

Em xin chn thnh cm n thy Hunh Hu Ngh tn tnh ging dy cng nh

hng dn em thc hin tt bi tp ln ny.



I. Nhim v thit k

Thit k thit b optical mouse (chut quang)-thit b nhp cho

my vi tnh.

C th:

S dng phn mm Pro Engineer wildfire 5.0 thit k m

hnh ha mouse

S dng module CAM ca phn mm trn thit lp qu

trnh gia cng cho m hnh to trn.

Xut ra file NC code s dng cho vic gia cng to sn

phm trn my CNC

II. M hnh ha thit b Mouse

Sn phm c hnh dng v mu sc ging nh hnh bn di

Sau y l trnh t thc hin.

Double click vo biu tng m chng trnh.

Giao din hin ra nh sau:



Chn working directory xc lp th mc mc nh lu

cc file trong qu trnh lm vic.

To mt file mi m hnh ha sn phm. chn New

Mt ca s mi hin ra

Chn Part => Solid b chn Use defaut temple ri Ok

Xut hin ca s chn h n v m ta s thit k trn



Xut hin giao din thit k nh sau

C nhiu cch m hnh ha sn phm ny. y ti xin

trnh by bng cch dng cc mt phng v mt cong

(khc vi xy dng bng khi c solid)

To mt

Xy dng bn v phc sketch trn mt phng Top

y ta chn

mmns_part_solid

ri chn Ok



T sketch c ta to mt theo tit din va v bng lnh

Fill.

Chn Edit ri click vo biu tng lnh Fill trong khung

s xung

Trong giao din lnh Fill chn sketch trn ta c mt ca

mouse



Gi chng ta s to mt cong lng ca Mouse bng lnh

Swept Blend.

Trc tin ta xy dng sketch ca ng cong dn trong

mt phng Right nh hnh v

Vi lnh Swept blend ta s ph mt mt cong bt u t

ng cong section 1 n ng cong section 2 theo



ng dn origin l ng cong va to trn. C th cch

lm nh sau:

Section 1 chnh l ng offset ca ng cong ngoi

cng bn phi ca mt

Section 2 chnh l ng offset ca ng cong ngoi

cng bn tri ca mt

ng dn c chn l ng cong u tin dng



Sau khi dng cc ng trn ta chn ok

tin hnh dng mt cong. Ta c c kt qu



Tip theo ta s to cc mt cong ph xung quanh bng

lnh Boundary Blend hai chiu.

Trc tin ta s to 4 ng Curve ni cc nh ti cc

gc ca mt lng v mt tng ng.

Chn biu tng hin ln cc ca s bn di v yu

cu chn hai im. ta chn hai im nh hnh

Nh vy l ta c mt ng curve.

Tng t to 3 ng cho 3 gc cn li.

Thc hin lnh Boundary Blend bng cch chn biu

tng . Xut hin giao din bn di



Chn tng ng 2 cp ng spline theo 2 chiu. sau

chn ok ta c ngay mt ph bn hng ca Mouse. Ta c

kt qu

Tng t ta to ba mt cn li. ta c c kt qu



Cc mt chng ta va to l nhng mng tch ri. khi thc

hin lnh Round sau ny s b li. do vy ta phi dn

chng li bng lnh Merge. Chn tt c cc mt va dng

kt hp gi phm Ctrl. Sau chn biu tng lnh

Ta c kt qu, sau chn ok kt thc lnh.

Gi ta c mt th dnh lin cc mt

Sau y ta s bo trn cc cnh ca Mouse

Chn lnh Round nhp vo bn knh bo trn l 7

Sau chn cc cnh nh hnh



Chn ok hon tt lnh, ta c kt qu

Tng t nh vy vi lnh round cho cc cnh giao vi

mt . Ta c kt qu



Sau y ta s t mu cho sn phm bng cch chn biu

tng . Biu tng cy bt lng hin ra, chn cc mt

cn t mu, y ti c

Vy l ta hon thnh qu trnh m hnh ha Mouse

bng mt s lnh n gin.

III. M phng qu trnh gia cng Mouse trn phn mm CAD +

CAM Pro Engineer wildfire 5.0

1. To phi.

To file gia cng New >> manufacturing b chn use defaut

temple >> chn empty



Chn chi tit gia cng insert>>reference model>>assemble

Chn file part ca mouse va thc hin trc .

Chn same model

Chn insert>>workpiece>>create nhp tn phi mouse_wp

Ri ok.

Trong menu maneger hin ra chn solid>>Protrusion

Chn extrude>>solid>>done

hin ra giao din sketch dng phi.

Phi c dng c kch thc mt ct l tit din nh hnh

Chn front l mt phng v pht.



Sau chn ok, v chn chiu cao n l 42, hng v pha

ph ht chi tit.

Chn ok ta c phi ca chi tit cn gia cng, v lng bn

trong l chi tit



2. Cc nguyn cng

Ta thc hin 4 nguyn cng:

Phay ph mt xung quanh profile_rough

Phay tinh mt xung quanh profile_finish

Phay th mt cong lng face_rough

Phay tinh mt cong lng facre_finish

1. Nguyn cng 1

- Chn kiu my phay v trc ta

Chn steps>>operation hp thoi operation setup hin

ln, click chn open machine bn phi NC machine,

hp thoi machine tool setup hin ln



Chn machine type: mill, numbers of axis: 3 axis >>ok

Hp thoi operation setup ti hin, chn mi tn en

bn phi machine zero, chn PRT_CSYS_DEF mn

hnh bn tri trong mn hnh ha v

NC_PRT_CSYS_DEF hin ln c hp thoi ln m

hnh phi chi tit

Chn mt an ton cho dng c: trong retract mc

surface chn mi tn en ri chn vo

NC_ PRT_CSYS_DEF, nhp khong cch 30



Thay i v tr im 0 ca my

Trn model tree chut phi vo

NC_PRT_CSYS_DEF chn edit definition>>chn

attributes v reference, chn done>>chn 3 plane ri

chn done

Chn mt trn cng v hai mt bn tri phi t

im zero mi



Xc nh tham s my phay

Click phi vo phi trn model tree tm n

phi

Chn steps>profile milling

Click chn name, retract surf >done

Nhp profile_rough vo nhp liu > ok

Hp thoi tool setup hin ln nhp Name: T8,

Type:endmill, ng knh mi phay 8, click apply,

hp bn tri chn save>ok

Hp thoi edit parameters hin ln, nhp cc tr s

nh hnh ri file>save as: profile_rough



Chn cc mt chi tit trong hp thoi surface, kt hp gi

phm Ctrl to individuals surface>ok

Menu play path hin ln chn screen play ri play forward

Trong ca s play path hin ln, chn save as:

profile_rough

2. Nguyn cng 2

Phay tinh: thc hin ging nh phay th nhng chn tc

nhanh hn v ng knh dao nh hn. Khc bit cc

hnh nh sau



3. Nguyn cng 3

To mill window. Click cng c mill window bn

phi mn hnh, mt hp thoi hin ln v placement c

mu .



Chn mt trn cng ca phi>>apply kt thc vic

chn mill window

Phay th tch

Chn steps>>volume rough, menu maneger hin ln,

nh du chn cc thng s nh hnh >>done



Nhp face_rough >>ok hp thoi tool setup hin ln chn cc

thng s nh hnh v

Hp thoi select hin ln chn mill window 1>>ok

Menu play path hin ln chn screen play, file>>save as

4. Nguyn cng 4

Phay tinh nguyn cng 3. Trnh t ging ht, ch khc bit

l gim ng knh dao v tng tc trc chnh.

Chn steps>>finishing

Menu maneger hin ln chn



nhp: face_finish



Trong menu play path chn file >> save as :face_finish

3. Lin kt cc bc gia cng v xut file NC

Chn edit>>CL data>>output set

Menu output set hin ln, chn create nhp tn file tng hp

cc bc mousemfg_1234 ri apply

Chn tools>CL data>post process

Hp thoi m ra chn file mousemfg_1234 ri open

Menu PP OPTION hin ln chn done ri chn

UNCX01.P20

Hp thoi information window hin ln thng bo hon

thnh qu trnh xut file chn close. File c to c dng

mousemfg_1234.tap trong th mc mc nh

Ni dng file NC c on u nh sau: %

(Date:05/10/14 Time:02:56:11)

G98G80G90G49G17

( / MOUSE_MFG)

T1M6

S1000M3

M8

G0X69.203Y73.82

G43Z30.H1

Z-6.935

G1Z-10.935F500.

X99.447Y75.405

Z30.

G0Y4.595

Z-6.935

G1Z-10.935F500.

X69.204Y6.18

Z30.

G0X61.992Y73.442



TI LIU THAM KHO

1. Bi ging CAD CAM CNC thy Hunh Hu Ngh

2. Lp trnh gia cng trn my CNC vi phn mm Pro Engineer

wildfire 5.0 - on Cng m

3. Creating milling sequences with Pro Engineer wildfire - PTC

phay th 1phay tinh 1phay th 2phay tinh 2

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Báo Cáo Môn Học Cad Cam Cnc