bai giang pro-e-bai 1-8

1KHA HC V CAD/CAMTS. Trn c Tng

Khoa Hng khng-V tr, Hc vin KTQSTel. 0973 991486; Email: [email protected]

2 2009 Dr. Tran Duc Tang Military Technical Academy

Mc tiu chung ca kha hc

Trang b cho hc vin nhng k nng to lp cc bn v 3D, cc m hnh lp ghp, cc bn v k thut.

Trang b cho hc vin nhng cng c to lp cc m hnh hnh hc trong mi trng Pro/Engineer

Gip hc vin nm c quy trnh thit k c s dng cc phn mm thit k c tr gip ca my tnh (CAD)

Nm c cc m un, cc ng dng ca phn mm Pro/Engineer

Nm c trnh t thit k cc m hnh hnh hc trong cc hthng CAD.

Thit k khun v lp trnh gia cng (CAM) cho chi tit bng phn mm Pro/Engineer


Chng trnh kha hc

Bi 1. Gii thiu, hng dn ci t Pro/Engineer, mi trng lm vic ca Pro/Engineer


1.1 Gii thiu v phn mm Pro/ENGINEER

Pro/ENGINEER l sn phm phn mm ca hng Parametric Technology Corporation (PTC) M.

Pro/ENGINEER l phn mm thit k 3D, cung cp cc gii php 3D CAD/CAM/CAE cho ngi thit k sn phm vi tt c cc kthut thit k theo tham s (Parametric Design), v thit k hng i tng (Feature Base Design)

Pro/ENGINEER c dng trong thit k c kh, t, khun mu, hng khng, kim loi tm,

Pro/MECHANICA cho php m phng ng hc, kin nghim ng sut, chuyn v, bin dng,...

Cho php to cc chng trnh gia cng trn my CNC, m phng v kim tra ng chy dao,


1.2 Hng dn ci t phn mm SolidWorks

Yu cu v cu hnh my tnh:- H iu hnh Windows (XP, Vista), hoc UNIX- RAM: Ti thiu 256 MB (nn: 1GB RAM hoc cao hn)- CPU: Ti thiu 500 MHz (nn: 2.4 GHz hoc cao hn)- cng cn trng 2 2.5 GB- Cc thit b khc: Card mn hnh, chut, mn hnh, bn phm, DVD hoc CD-ROM- Internet Explorer, Adobe Acrobat- Mn hnh: phn gii 1280x1024 hoc cao hn

Hng dn qu trnh ci t:


Cc module ca phn mm Pro/ENGINEER

Pro/ENGINEER bao gm rt nhiu modules khc nhau, v d: Pro/ENGINEER

Integrated, parametric 3D CAD/CAM/CAE software. Pro/ENGINEER Plastic Advisor

Simulates plastic-filling process for injection-molded parts. Pro/ENGINEER Complete Machining

A full solution for creating all types of programs for CNC machines used in production environments.

Pro/ENGINEER Complete Mold Design Core, cavity and moldbase design capabilities all in one package.

Pro/ENGINEER Advanced Rendering Quickly create high-quality, photo-realistic product images.

Pro/ENGINEER Reverse Engineering Transform existing physical products into digital models.


1.3 Cc khi nim c bn

Sketch- Sketch l i tng hnh hc n gin, dng khung dy 2D hoc 3D,

c dng to ra cc Feature.- Sketch bao gm cc phn t hnh hc c bn (Entity) ca CAD, nh

on thng (Line), cung trn (Arc), vng trn (Circle), ch nht (Rectang),... c sp xp v nh hnh mt cch c ch ch nh cc lin kt (Constraint) v cc kch thc (Dimension).

Constraint quy nh v tr tng quan gia cc phn t hnh hc. Cc Constraint thng dng l:- Horizontal: ging mt ng thnh nm ngang- Vertical: ging mt ng thnh thng ng- Perpendicular: buc 2 ng thng vung gc vi nhau- Parallel: buc 2 ng thng song song vi nhau


- Point: 2 im trng nhau- Mid-point: trng im gia- Collinear: buc 2 ng thng trng nhau- .

Feature- Feature l i tng hnh hc 3D c bn nht ca Feature Based

CAD, hnh thnh hoc tr gip cho hnh thnh cc m hnh chi tit (Part) hoc m hnh lp rp (Assembly).

- Theo vai tr ca Feature v cch to ra n trong thit k hoc trong kt cu, ngi ta phn bit cc loi Feature sau:


Sketched Feature: l Feature c to ra t Sketch. + Sau khi c Sketch, ngi ta mi dng cc cng c m hnh ho (Extrude, Revolve, Sweep, Loft,...) to ra Feature.+ Feature u tin trong mi chi tit phi l Sketched Feature.+ Sketched Feature cn c gi l Feature c s. Cc SketchedFeature thng l cc b mt c bn trong chi tit.

Placed Feature: l Feature c to ra trn c s cc Feature khc. + Chng khng da vo Sketch hoc ch da mt phn vo Sketch. + Cc loi Placed Feature c bn l:

Hole (l),Fillet hoc Round (v trn cnh hoc gc),


Chamfer (vt cnh hoc gc),Rib (gn),Shell (v mng).

Work Feature: l Feature khng cu thnh chi tit m ch gip ch cho hnh thnh chi tit. - Chng thng c dng lm chun kch thc nh v cc

Feature khc trong chi tit hoc nh v cc chi tit trong cm lp.

- Tng ng vi 3 loi chun c bn (mt chun, trc chun, im chun) c 3 loi Work Feature l:

Datum Plane, Datum Axis v Datum Point.


Part- Khi nim Part tng ng vi khi nim chi tit my trong c kh. V

vy, khi lm vic vi cc phn mm thit k c kh nn gi Part l chi tit my, hay n gin l chi tit.

- Khi lp rp, ngi ta cn dng t Component (cu t) ch Part hoc Sub Assembly (cm lp con).

- Cc Part c ghi di tn file vi phn m rng l .PRT

Assembly- Assembly c hiu tng t nh trong c kh l cm lp c lp. - Assembly c hnh thnh bng cch ghp chi tit hoc cc cm lp

con (Sub Assembly) nh cc mi ghp (Constraint). S cu trc ca Assembly c dng nhnh cy.

- Cc Assembly c ghi di tn file vi phn m rng l .ASM


Mi trng Drawing: Cho php chng ta to cc bn v k thut To cc hnh chiu, mt ct, hnh ct ring phn, Ghi kch thc, dung sai,. Cc Drawing c ghi di tn file vi phn m rng l .DRW Khi thay i kch thc trn bn v 2D, kch thc ca m hnh

3D cng cp nht thay i s thay i v ngc li. Mi lin kt gia cc chi tit, cc bn v lp ghp, v cc bn

v k thut cho php chng ta cp nht nhanh chng s thay i gia cc bn thit k (lin kt End-to-End).


1.4 Giao din ca Pro/ENGINEER

Phm vi lm vic ca Pro/ENGINEER gm 2 phn chnh: Cy qun l thit k-bng iu khin (Model Tree) Vng ha

Model Tree

Vng ha


Giao din ca Pro/ENGINEER

Menu Bar Menus

Menu Bar Toolbar

Thanh cng c Toolbar: Gm cc nt lnh, c th thay i v tr, n hoc hin cc thanh cng

c

bt hoc tt cc thanh cng c: a con tr chut vo vng thanh cng c, bm phm phi chut, chn cc cng c mun hin th.


Cy qun l thit k-bng iu khin (Model Tree) Hin th tn file v danh sch ca cc features trong file chi tit, bao gm c cc Datums

i vi file lp rp, model tree hin th file lp rp v cc file chi tit s dng trong lp rp Gip d dng trong qun l, to lp v hiu chnh m hnh thit k, la chn cc i tng trong m hnh, C th n hoc hin Model TreeC th n hoc hin cc i tng trong Model Tree


Shortcut Menus Thc n phi chut (shortcut menus) cho php s dng mt s chc

nng ca Pro/ENGINEER m khng phi di chuyn chut n thanh cng c hoc thanh thc n

Flyout Tool Buttons Cc lnh tng t c nhm vo trong Flyout bottons trn Toolbar


1.5 Lm vic vi Pro/ENGINEER

1.5.1 Th mc lm vic (Working Directory)- ProE t ng tm v lu cc files trong 1 th mc mc nh gi l th mc lm vic (Working Directory).- Cc files c to ra t ng v cc files do ngi thit k to ra nu khng ghi sang th mc khc th mc nh c lu trong th mc lm vic.- ProE s dng th mc khi ta bt u chng trnh lm th mc mc nh.- t th mc lm vic khc, s dng: File\Set Working Directory

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1.5.2 M mt bn thit k mi trong mi trng ProE m mt tp tin mi cho thit k chi tit (Part), bn v lp (Assembly), bn v k thut (Drawing):- Chn File\New trn Menu Bar Menus (phm tt Ctrl + N)


- Hoc chn biu tng New trn thanh Menu Bar Toolbar

T hp thoi New Chn Part: m tp tin mi cho thit k chi tit Chn Assemby: m tp tin mi cho bn v lp Chn Drawing: m tp tin mi cho bn v k

thut

Nhp vo tn file mc name v chn kiu Sub-type tng ng

Chn OK

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1.5.3 M mt tp tin c

Chn File\Open trn Menu Bar Menus (phm tt Ctrl + O) sau tm file cn m v bm chn nt Open

Hoc chn biu tng Open trn thanh Menu Bar Toolbar

Bm va In Session t danh sch Look in ca hp thoi Open hin th cc file dang m trong cng thi im.

S dng nt Preview hin th ha chi tit trc khi m


1.5.4 M mt tp tin c thng qua cng c Explorer

Dng Windows Explorer tm tp tin cn m sau : Kch p chut vo tp tin Hoc bm phm phi chut\chn Open with Pro/ENGINEER

1.5.5 Lu tp tin Chn File\Save (Ctrl + S) Hoc bm vo biu tng Save trn thanh Menu Toolbar

Khi dng lnh Save, ProE to ra mt phin bn mi ca file v s dng con s phn m rng ch phin bn mi, v d: cover.prt.1, cover.prt.2, V vy chng ta lun c cc phin bn trc s dng trong trng hp file hin hnh b li.

Khi dng lnh Open m mt file, phin bn mi nht ca file c hin ra

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1.5.6 Lu tp tin vi tn file khc Chn File\Save a Copy Trong trng hp ny File c vn cn, ProE to ra mt copy ca file

vi tn File c nhp bi ngi s dng1.5.7 Backup file

Nu khng mun lu cc file lp trong th mc lm vic ta c th sdng File>Backup ch nh mt th mc cho cc file lp li.

1.5.8 ng File hin hnh Chn File\Close Windows (File vn lu trong b nh ca my tnh) g b file t b nh my tnh chn File\Erase (ng file hon ton

m khng xa file t a my tnh) Ta c th s dng File\Erase\Not Display hin th danh sch cc

file ng nhng cn trong b nh my tnh, sau xa file khi bnh)


1.5.9 Xa file S dng File>Delete xa cc file trn a Ta c th ch xa cc file phin bn c, phin bn sau cng khng b

thay i, hoc ta c th xa tt c cc files. S dng File>Delete>Old Versions xa cc file phin bn ca S dng File>Delete>All Versions xa tt c cc file

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1.5.10 Cc iu khin khung nhn

Cc nt lnh iu khin khung nhn

Repaint: V li Zoom in: phng to Spin center: quay quanh tm Zoom out: thu nh Orient mode on/off: bt/tt Orient mode Reorient view: nh li hng nhn Save view list: Danh sch cc khung nhn lu

Cho php chng ta quay, phng to, thu nh, nhn i tng cc mt chiu khc nhau,.

Dng phm gia chut iu khin


1.5.11 Bng nhp cc tham s

Cho php chng ta s dng cc ci t tham s nh ngha hnh hc mi hoc nh ngha li cc dng hnh hc ang tn ti

1.5.12 Cc ty chn hin th khiShade: hin th m hnh nh 1 khi cHidden line: hin th cc ng khut vi mu khcNo hidden line: khng hin cc ng khut sau b mtWireframe: dng khung dy

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1.5.13 Hin th cc chun

Ta c th hin th hoc n cc mt phng chun, cc im chun, cc trc v cc h trc ta

Chn mt chun, im chun hoc h trc ta trn Model tree v s dng ln Hide trn menu tt t nt chut phi

1.5.14 Chn la cc kiu lc Cc thit k phc tp kh c th chn la chnh xc mt i

tng no , ProE cung cp cc kiu lc i tng gii hn cc kiu i tng m ta c th chn.


1.5.15 Th t v chn cc feature

Th t cc feature l trnh t cc feature a ra trn model tree, khi ta thm mt feature n b sung vo nh mt nt trn model tree.

Ta c th ko mt feature ln t n vi mt feature khc, tuy nhin khng th sp xp mt feature con trc mt feature cha m

Chn mt feature l g b tm thi n trong m hnh C th s dng lnh Hide trn t menu phi chut trn feature c chn Nu cc feature sau khi b chn khng c trong model tree, s dng Setting v chn Tree Filter. Trong hp thoi Model Tree, chn Display>chn Feature, chn Suppressed Objects

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1.6 Design Intent ( nh, mc ch thit k) Automatic (sketch) Relations Added Relations Equations Link Values

Dimensions


THC HNH1. Ci t phn mm Pro/ENGINEER 2. Lm quen vi mi trng Pro/ENGINEER

- M cc tp tin trong mi trng Pro/ENGINEER - Lu v qun l cc tp tin- Giao din ca Pro/ENGINEER - Ca s lm vic ca Pro/ENGINEER - Cc thanh cng c- Qun l cc Features trong Model Tree- Thc n phi chut- Cc phng php truy bt i tng- Cc iu khin khung nhn- Cc ty chn hin th khi,

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To cc Sketch trong mi trng Sketch


1. Mi trng sketch

Khi ng Pro/ENGINEER Chn File>New Trong hp thoi New chn Sketch t tn cho sketch mc Name OK

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Mn hnh giao din trong mi trng Sketch


2. Cc cng c v trong mi trng Sketch

Lnh v ng thng, ng tm V hnh ch nht V hnh trn V cung trn V hnh ellipse V ng spline V im,

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2.1 Cc lnh v ng thng

V ng thng Menu: Sketch\Line\Line Toolbar: Sketcher\LineCc rng buc c hin th khi chng ta v, nh ng thng ng,

ng nm ngang, tip tuyn, Kt thc lnh bng cch bm phm gia chut

V ng centerline Menu: Sketch\Line\Centerline Toolbar: Sketcher\Centerline

V ng thng tip xc vi 2 i tng Menu: Sketch\Line\Line Tangent Toolbar: Sketcher\Create line tangent to 2 entities


2.2 V hnh ch nht

V hnh ch nht bng cch nhp ta 2 gc i nh Menu: Sketch\Rectangle Toolbar: Sketcher\Rectangle

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2.3 V hnh trn

V ng trn qua tm v mt im trn ng trn Menu: Sketch\Circle\Center and Point Toolbar:

V ng trn ng tm Menu: Sketch\Circle\Concentric Toolbar:

V ng trn qua 3 im Menu: Sketch\Circle\3 points Toolbar:


V ng trn tip tuyn vi 3 cnh Menu: Sketch\Circle\3 Tangent Toolbar:

V hnh ellip Menu: Sketch\Circle\Ellipse Toolbar:

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2.4 V cung trn

V cung trn qua 3 im Menu: Sketch\Arc\3-Point/Tangent End Toolbar:

V cung trn ng tm Menu: Sketch\Arc\Concentric Toolbar:

V cung trn tip tuyn vi 3 i tng Menu: Sketch\Arc\Concentric Toolbar:


V cung trn qua tm-im u-im cui Menu: Sketch\Arc\Center and Ends Toolbar:

V cung hnh nn Menu: Sketch\Arc\Conic Toolbar:

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2.5 V ng Spline

Nhp lnh: Menu: Sketch\Spline Toolbar: chn biu tng trn thanh cng c sketcher

2.6 V im Nhp lnh:

Menu: Sketch\Point Toolbar: chn biu tng trn thanh cng c sketcher

2.7 Xa cc i tng Xa cc i tng ca Sketch bng cch s dng chut chn

cc i tng cn xa v bm phm Delete t bn phm hoc chn Delete t thc n phi chut


2.8 Ghi kch thc cho Sketch

Sau khi v Sketch chng ta cn ghi kch thc cho Sketch Mc ch c bn ca vic ghi kch thc l iu khin kch c

ca Sketch v nh v Sketch vi cc tham chiu Sau khi v sketch, phn ln cc i tng c ghi kch thc t ng, ghi bng tay:

Nhp lnh: Menu: Sketch\Dimensions Toolbar: chn biu tng trn thanh cng c sketcher

Thay i kch thc Kch chut vo gi tr kch thc cn thay i Thay i gi tr kch thc trong hp thoi OK

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2.9 To cc rng buc

To cc rng buc c thc hin theo 2 cch To t ng bng phn mm ProE To rng buc bng tay theo ngi thit k

2.9.1 To rng buc t ng Khi v Sketch biu tng rng buc s xut hin bn di con tr

Sketch

2.9.2 To rng buc bng tayThc hin: Chn Sketch\Constraints Hp thoi Constraints xut hin La chn cc rng buc theo yu cu, chn i tng, OK


THC HNH Chy phn mm Pro/ENGINEER Vo mi trng Sketch S dng cc cng c ca Sketch v cc hnh v sau:

Hnh 1-1. Bi tp 1 Hnh 1-2. Bi tp 2

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Hnh 1-3. Bi tp 3


Hnh 1-4. Bi tp 4

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Hnh 1-5. Bi tp 5 Hnh 1-6. Bi tp 6

Hiu chnh v bin i Sketch

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1. Cc cng c hiu chnh v bin i trong mi trng Sketch

Ct ta hoc ko di i tng (Trim) Ly i xng (Mirror) V trn (Fillet) Sao chp i tng (Copy) Phng to, thu nh v quay i tng (Scale and Rotate) Ghi ch thch (Text)


1.1 Ct xn hoc ko di i tng (Trim)

Cho php ct ta cc on ti giao ca cc ng thng, ng cong, ng trn, ellipse

Thc hin Chn lnh Edit\Trim

hoc kch vo biu tng trn thanh cng c Sketcher La chn cc Options:

Delete Segment: Xa cc phn on tha Conner: Ct 2 i tng gc giao ca n, phn on c chn bi con

tr chut c gi li Divide: Chia i tng im la chn

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1.2 Ly i xng Mirror

Dng ly i xng cc i tng sketch qua mt ng tm Cch thc hin

V i tng cn ly i xng V ng tm Chn lnh Mirror t menu Sketch\Mirror, hoc biu tng

trn thanh cng c Sketcher Chn ng i xng OK


1.3 V trn Fillet

To ra ng cong dng cung trn hoc cung hnh ellipse tip tuyn ti giao ca 2 i tng Sketch

Thc hin Chn lnh t menu Sketch\Fillet hoc biu tng trn thanh

cng c Sketcher Cc ty chn:

Circular: to ra ng cong dng cung trn ti giao ca 2 i tng Elliptical: to ra ng cong dng ellip ti giao ca 2 i tng

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1.4 Sao chp i tng (Copy) Cho php chng ta sao chp, phng to, thu nh v quay i tng Thc hin:

Chn cc i tng cn sao chp Vo Edit/Copy t i tng copy ti v tr mong mun Nhp t l phng to hoc thu nh mc Scale ca hp thoi Scale

rotate

Nhp gc quay nu cn mc Rotate Chn OK


1.5 Phng to, thu nh v quay i tng (Scale and Rotate) Dng phng to, thu nh v quay i tng i mt gc Thc hin:

Chn i tng cn phng to, hoc thu nh, quay Chn Edit/Scale and Rotate Nhp t l mc Scale, v gc quay mc Rotate ca hp thoi

Scale and Rotate OK

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1.6 Ghi ch thch (Text) Dng ghi ch trong bn v Thc hin:

Vo Sketch\Text Hoc chn biu tng trn thanh cng c Sketcher Dng phm tri chut kch chn 2 im xc nh chiu cao ca ch Hp thoi Text xut hin Nhp ni dung vn bn mc Text line Chn font ch mc font T l v khong cch gia cc ch mc

Aspect ratio Gc nghing ca ch mc Slant angle OK


THC HNH S dng cc cng c v v hiu chnh Sketch v cc hnh v sau:

Hnh 1-7. Bi tp 7

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Hnh 1-8. Bi tp 8Hnh 1-9. Bi tp 9


Hnh 1-10. Bi tp 10 Hnh 1-11. Bi tp 11

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Bi 2. To lp cc Feature 3D c s


1. Khi nim

Feature c s l solid feature c to u tin khi chng ta to m hnh chi tit (Part)

V d:

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2. Vo mi trng thit k chi tit (Part) Khi ng Pro/ENGINEER Vo File\New Chn Part trong vng Type v Solide trong vng Sub-type Nhp tn cho chi tit Name OK


Mn hnh giao din khi bt u vo mi trng thit k chi tit

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3. To feature 3D c s bng lnh Extrude

Nhp lnh Vo Insert\Extrude hoc chn biu tng trn thanh cng

c Base Feature

Chn Placement -> chn Defind bng nhp Dashboard


Chn 1 mt phng lm mt phng Sketch (v d mt phng Front) Bm nt Sketch -> vo mi trng v phc Sau khi v Sketch xong, bm nt quay v bng nhp

Dashboard Nhp cc tham s theo yu cu trong bng Dashboard

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Revolve quay mt Profile xung quanh mt ng tm vi mt gc cho trc.

3. To Feature c s bng cng c Revolve


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Nhp lnh Vo Insert\Revolve hoc chn biu tng trn thanh cng

c Base Feature

Chn Placement -> chn Defind bng nhp Dashboard

Chn 1 mt phng lm mtphng Sketch(v d mt phng Front)

Bm nt Sketch -> vo mi trng v phc Sau khi v Sketch xong, bm nt quay v bng nhp

Dashboard


Nhp cc tham s theo yu cu trong bng Dashboard

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THC HNH M phn mm Pro/ENGINEER Vo ch thit k chi tit (Part) S dng cng c Extrude v Revolve to lp cc m hnh khi

rn 3D Lu bn v V cc m hnh nh m t di y


Hnh 2-1. Bi tp 12

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Hnh 2-2. Bi tp 13


Hnh 2-3. Bi tp 14

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Hnh 2-4. Bi tp 15


Hnh 2-4. Bi tp 16

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Hnh 2-5. Bi tp 17

To lp cc i tng hnh hc tham chiu Datums

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1. Khi nim v cc chun (Datums) Datums (cc chun) l cc feature o (tng tng) khng c khi

lng hay th tch, c s dng tr gip trong qu trnh to m hnh, chng hot ng nh cc i tng tham chiu cho cho cc sketch ca feature, nh hng m hnh, lp rp cc b phn, v.v

Cc datums ng vai tr rt quan trng trong to cc m hnh phc tp trong Pro/ENGINEER

Datums c xem nh l cc feature nhng khng phi l cc m hnh hnh hc (model geometry)

Trong Pro/ENGINEER c cc datums: datum plane, datum point, datum curve, datum coordinate system,


Cc mt chun mc nh

Khi vo mi trng Part hoc Assembly, c 3 mt phng mc nh c hin ra trn mn hnh ha. 3 mt phng ny vung gc vi nhau, chng c gi l cc mt chun mc nh.

S khc nhau gia cc mt chun ca mi trng Part v mi trng Assembly tn ca cc mt chun.

Tn cc mt chun mc nh trong mi trng Part l FRONT, TOP v RIGHT. Trong mi trng Assembly tn cc mt chun mc nh l: ASM_FRONT, ASM_TOP, v ASM_RIGHT.

Tn ca cc mt chun mc nh c th c thay i nu cn.

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S cn thit ca cc chun trong to m hnh

Thng thng cc thit k u c nhiu hn mt feature. u tin feature c s c to sau cc feature khc ca m hnh c to.

Do tt c cc feature ca m hnh khng th v trn mt mt phng, v vy v cc feature khc, i khi chng ta phi thm cc mt phng.

Mt khc trong phn ln cc trng hp, 3 mt chun mc nh khng to cc m hnh phc tp c nhiu features

V d: hnh sau ch ra mt m hnh n gin c 2 featre, yu cu 2 mt chun khc nhau:


M hnh c 2 Extrude Features Features c s ca m hnh

Mt phng c chn to feature c s

Mt phng c chn to feature th 2

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2. Cc lnh to cc Datums

2.1 Mt phng chun (Datum Plane) Mt chun c th c s dng cho cc mc ch sau:

S dng lm mt sketch Lm cc mt tham chiu cho sketch S dng nh cc mt tham chiu t cc l (holes)

hay cc lp rp S dng lm cc mt tham chiu ly i xng

cc feature, copy features,

Nhp lnh: Vo Insert\Model Datum\Plane Hoc chn biu tng trn thanh cng c Datum

Thanh cng c Datum


Hp thoi Datum Plane xut hin Cc ty chn:

Placement Tab Through: t mt chun mi i qua i

tng tham chiu c chn Offset: t mt chun mi cch i

tng tham chiu mt khong bng gitr offset

Parallel: t mt chun mi song song vi i tng tham chiu

Normal: t mt chun mi vunng gc vi i tng tham chiu

Tangent: t mt chun mi tip tuyn vi i tng tham chiu c chn

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Display Tab Flip: quay hng vc t vung gc ca mt

chun mi

Adjust Outline check box: iu chnh kch c ng bao ca mt chun Reference: kch c ca mt chun bng kch c

ca i tng tham chiu Size: cho php nhp gi tr chiu rng (Width)

v chiu cao (Hight) Properties Tab: Xem cc thng tin v mt

chun hin ti


Mt s v d v to mt chun:

Mt chun vung gc vi mt th nht (planner surface) v tip tuyn vi mt tr

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Mt chun i qua tm hnh tr v nghing mt gc


Mt chun song song vi mt chun mc nh v i qua mt im c chn

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2.2 Cc trc chun (Datum Axes)

Trc chun l trc o c to trong Pro/ENGINEER tr gip trong qu trnh to m hnh. Cc trc chun c to bng tay. Chng cng c to t ng khi mt feature hnh tr c to

Cc trc chun c s dng cho cc mc ch sau:

S dng nh cc trc tham chiu to cc feature

to cc mt chun

t cc features

Tn trc chun c t mc nh trong ProE l A_(s), trong s biu din s ca trc chun , v d A_1, A_2, chng ta cth thay i tn nu cn


Nhp lnh: Vo Insert\Model Datum\Axis Hoc chn biu tng trn thanh

cng c Datum Hp thoi Datum Axis xut hin

Cc ty chn Placement Tab

References: s dng la chn cho tham chiu trc chun mi Through: trc chun i qua i tng tham

chiu c chn Normal: t trc chun mi vung gc vi i

tng tham chiu c chn

45


Offset References: c kch hot khi ty chn Normal trong References c chn. S dng ty chn ny la chn Offset References

Display Tab Adjust Outline: cho php iu chnh chiu di

ca trc chun Size: iu chnh iu di ca trc chun theo

gi tr c nhp vo mc Length Reference: iu chnh chiu di ca trc chun

theo i tng tham chiu

Properties tab Hin th thng tin v trc chun feature hin

hnh


Mt s v d v to trc chun:

Trc chun vung gc vi 1 mt phng

Trc chun i qua 1 cylinder

46


Trc chun c to trn cnh giao ca 2 mt phng

Trc chun i qua 2 im


2.3 im chun (Datum Points) Cc im chun l cc im o (tng tng) trong ProE tr

gip trong qu trnh to m hnh, bn v, Cc im chun dng :

To mt chun v trc chun To h ta

Tn mc nh khi to cc im chun c dng PNT(S), v d: PNTO, PNT1, PNT2,

Nhp lnh: Vo Insert\Model Datum\Point hoc chn biu tng trn

thanh cng c Datum Hp thoi Datum Point xut hin

47


Cc ty chn: Placement Tab:

References: lit k cc tham chiu cho im chun cn to (v d: nu chng ta to mt im nm trn giao ca 3 mt phng, 3 mt phng c chn s lit k trong danh sch)

Offset: nhp gi tr khong cch offset

Properties: cho php sa tn, xem thng tin v feature


THC HNH S dng cc lnh hc to cc m hnh 3D sau:

48



49



50


Bi 3. Cc cng c xy dng m hnh 3D - I

51


1. To l (Hole) Nhp lnh:

Vo Insert\Hole hoc bm biu tng trn thanh cng cEngineering Features

Thanh hp thoi (bng nhp cc tham s Dashboard) xut hin

Cc ty chn gm: Straight Holes ( )

Simple: To l n gin s dng Pre-defined geometry Sketched: To Sketched holes s dng bin dng sketch to trong

sketcher


Diameter box ( ) iu khin ng knh ca l Depth options list (danh sch cc la chn chiu su l)

Khoan l theo hng th nht vi chiu su c ch ra

Khoan l theo c 2 hng

Khoan ti b mt k tip

Khoan xuyn qua tt c cc b mt

Khoan ti b mt c la chn

Khoan ti im, ng cong, mt phng hay b mt ca 1 khi

52


Standard Holes ( ) Thread type box (cc kiu ren): nh ngha cc bin dng l tiu chun, cc

kiu ren tiu chun (ISO, UNC, UNF) Screw size box (kch thc bulong)

Depth options list (danh sch cc la chn chiu su l)

Ren trong l tiu chun

To ming l cn cho l tiu chun

To ming l dng khot cho l tiu chun


Cc v d v to l:

53



2. To chi tit c thnh mng (Shell) Lnh Shell xc b vt liu t m hnh ng thi b b mt c

chn

54


Nhp lnh Vo Insert\Shell hoc bm vo biu tng trn thanh cng c

Engineering Features Thanh hp thoi xut hin

Cc ty chn Hp Thickness: nhp gi tr dy Thay i hng to shell (vo pha trong hay ra ngoi)

References: Removed surfaces: chn b mt ct vt liu Non-default thickness: chn b mt m chng ta mun gn dy thnh

vi gi tr khc


3. To g (Rib) G l mt chi tit c to gia cc chi tit trn mt b phn, n

c th trn hoc thng. G ging nh cc phn ko c hai bn ca mt phc tho

Mt ct ca mt chi tit g phi m Cc phn cui trong mt mt ct ca mt chi tit g phi c

ging thng vi cc mt b phn hin c.

55


Nhp lnh Vo Insert\Ribs hoc bm biu tng trn thanh cng c

Engineering Features Thanh hp thoi xut hin

Cc ty chn: Hp Thickness: iu chnh dy ca gn Thay i hng to dy ca gn (v pha tri, phi, hoc

u sang 2 bn) References:

Sketch: cha sketch to gn Define: m hp thoi sketch, nh ngha mt ct ca gn


4. To vt mt (Draft) Nhp lnh

Vo Insert\Draft hoc bm vo biu tng trn thanh cng cEngineering Features

Thanh hp thoi xut hin

Cc ty chn (Draft hinge collector): chn ng lm trc quay

cho mt vt (Draft surface). (Pull direcion collector): hng s dng o gc

vt (Draft Angle) Thay i hng gc vt

56


5. Bo trn (Round) Lnh Round dng bo trn cc cnh hoc cc gc ca m hnh


Cch nhp lnh: Vo Insert\Round hoc bm biu tng trn thanh cng c

Engineering Feature Thanh hp thoi xut hin

Cc ty chn Bo trn cc gc, cnh

To s chuyn tip trong cc gc, cnh c bo trn

57


6. Vt cnh, gc (Chamfer) Lnh Chamfer dng vt cc cnh hoc cc gc ca m hnh


Cch nhp lnh: Vo Insert\Chamfer hoc bm biu tng trn thanh cng c

Engineering Feature Thanh hp thoi xut hin

Cc ty chn Vt cc gc, cnh

To s chuyn tip trong cc gc, cnh c vt

58


THC HNH S dng cc lnh hc to cc m hnh 3D sau:


59



60


Bi 4. Cc cng c xy dng m hnh 3D - II

61


1. To cc Pattern

Pattern l mng 1 hoc 2 chiu ca cc features, c to t mt feature, gi l feature gc.

Lnh Pattern dng to mng ca cc Features, c sp xp theo dng hng-ct hoc sp xp hng tm (radial)-xung quanh 1 tm

Khi thay i feature gc, cc features khc (Feature con) trong pattern, c to t feature gc cng thay i.


62


Cch nhp lnh: Chn Feature cn to mng Vo Edit\Pattern hoc bm vo biu tng trn thanh cng c

Edit Feature Thanh hp thoi xut hin

Cc ty chn: Dimension: To pattern bng cch dng cc kch thc iu khin Direction: To pattern bng cch ch ra hng t cc feature con Axis: To pattern dng hng tm


Fill: To pattern bng cch sp xp cc feature con trong mt vng Table: To pattern bng cch nhp s feature v khong cch gia

cc feature trong mt bng

63


2. Copy v ly i xng (Mirror) i tng Nhm copy mt feature bng cch ly i xng Feature qua mt

mt chun hoc mt mt phng, gip tng tc qu trnh to m hnh

Cch thc hin Chn Feature cn ly i xng Vo Edit\Mirror hoc bm biu tng trn thanh cng c Edit

Feature

Thanh hp thoi xut hin

Chn mt phng i xng OK


3. Lnh Sweep

Lnh Sweep qut mt mt ct trt dc theo mt ng dn to m hnh khi

Th t thc hin: u tin to ng dn (ng dn c th kn hoc h), sau to mt ct

64



Cch nhp lnh: Vo Insert\Sweep\Protrusion (hoc Thin Protrusion) Hp thoi Protrusion: Sweep v Menu Manager xut hin

Chn Sketch Traj Chn mt mt phng lm mt phng Sketch Okay

65


Dng cng c Sketch, v ng dn OK V mt ct (lm mt trt theo ng dn) Bm Preview xem trc

OK


4. Lnh Blend

Blend Feature l feature c to t nhiu Sections (ln hn 2), cc sections c ni vi nhau qua cc b mt chuyn tip

V d:

66


Cch thc hin: Vo Insert\Blend\Protrusion (hoc Thin Protrusion) Menu Manager xut hin Chn Parallel, Rgular Sec, Sketch Sec, Done Chn Straight (hoc Smooth) Done

Chn mt phng v Sketch Okay V Section th nht v Section th hai, vo Sketch\Feature Tool\Toggle Section Section th nht m i. V Section th hai. Nu mun tip tc to cc

sections, bm Toggle Section sau mi Section


Khi kt thc to sections, bm thot khi Sketcher Nhp chiu su cho mi section OK

67


THC HNH S dng cc lnh hc v cc m hnh 3D sau:


68



69

Bi 5. To lp m hnh lp rp


1. M hnh lp rp

Phn ln cc thit k bao gm nhiu chi tit c lp rp cng nhau, v tr lm vic tng ng ca chng

Qu trnh lp rp c thc hin ch lp rp (Assembly Mode) ca Pro/ENGINEER

vo ch lp rp: Chn File\New, hp thoi New xut hin: Chn Assembly mc Type Chn Design mc Sub-type Nhp tn cho lp rp mc Name OK

70


2. Cc rng buc lp rp

Mate: Rng buc Mate s dng t hai mt phng hoc 2 mt phng chun, mt mt phng v mt mt phng chun sao cho vector php tuyn ca chng hng vo nhau.


Nu ty chn Offset c chn khi 2 mt phng cch nhau mt khong bng gi tr Offset

71


Nu ty chn Coincident c chn hoc gi tr Offset bng 0, khi 2 mt phng lp ghp trng nhau


Nu ty chn Offset l Oriented, khi cc b mt lp ghp hng theo cng mt hng (song song vi nhau)

72


Align: Rng buc Align lm cho hai mt phng ng phng (trng nhau v cng hng v mt hng), hai trc ng trc, hoc hai im trung nhau.


Ty chn Offset: 2 mt song song v cch nhau mt khong bng gitr offset

73


Ty chn Coincident: t 2 mt c chn hng v cng mt hng


Ty chn Oriented: lm cho hai b mt c chn cng hng theo hng c chn

74


Insert: rng buc Insert c s dng lp rp cc i tng dng tr(dng quay trn), to cho cc tr, l ng trc vi nhau


Coord Sys: Rng buc Coord Sys sp xp h ta ca thnh phn thnht tng ng vi h ta ca thnh phn th hai. S dng t mt thnh phn trong mt lp ghp bng cch sp xp h ta ca n tng ng vi h ta trong lp rp.

75


Tangent: S dng rng buc Tangent iu khin tip xc ca hai bmt im tip tuyn ca chng, v d tip xc ca b mt hoc im gia cam v c cu truyn ng.


Pnt On Line: S dng rng buc ny iu khin tip xc ca mt cnh, trc hoc ng cong chun vi mt im.

Pnt On Srf: s dng rng buc Pnt On Srf iu khin tip xc ca mt b mt vi mt im.

Edge On Srf: iu khin tip xc ca mt b mt vi mt cnh

Automatic: t ng gn rng buc ty theo i tng c chn

76


3. Cc mt phng chun lp rp

Khi chng ta vo mi trng lp rp, c ba mt chun lp rp mc nh hin th trn mn hnh.

Nu khng mun s dng cc mt chun mc nh ca ProE, bty chn Use default template hp thoi New.

Cc mt chun mc nh gip ta d dng hn trongqu trnh lp rp v chnhsa lp rp.

Cc mt chun lp rp


4. Lp rp cc chi tit

Cc chi tit trong lp rp c th c xp t parametrically hoc nonparametrically. Nu cc chi tit c xp t s dng cc rng buc gi l lp rp theo tham s (parametric assembly), nu cc chi tit c xp t khng s dng cc rng buc gi l lp rp khng theo tham s (nonparametrically assembly) hay Pakage

lp rp cc chi tit theo tham s:

Chn: Insert\Components\Assemble

Chn chi tit cho lp rp t hp thoi Open

Hp thoi Component Placement xut hin. Hp thoi ny c sdng t cc rng buc cho lp rp

77


Cc ty chn trong hp thoi Component Placement Hin th chi tit lp rp trong mt ca

s ring. Khi chn ty chn ny mt ca s mi hinra hin th chi tit s c lp rp, gip ta d dngquan st chi tit s c lp rp v lp rp. Tuy nhinkhi gn cc rng buc chng ta kh quan st sthay i v tr v hng ca chi tit trong lp rp

Hin th chi tit s c lp rp trong cng ca s lp rp. Ty chn ny gip ta d dngquan st s thay i v tr ca chi tit trong lp rpkhi gn cc rng buc


Place Tab Vng Constraints: hin th tt c cc kiu rng buc gn cho cc chi

tit theo th t m cc rng buc c gn Thm mt rng buc lp rp chi tit

Xa rng buc gn cho chi tit

Thay i rng buc gn cho chi tit

C nh chi tit lp rp v tr hin ti

Gn h ta ca chi tit vi h ta mc nh ca lp rp, cc mt chun Front, Right, Top ca chi tit c sp t tng ng vi cc mt chun ca lp rp

78


Vng Component Reference

chn tham chiu cho rng buc trn chi tit s c lp rp

Vng Assembly Reference

chn tham chiu cho rng buc trn lp rp

Vng Placement Status

Hin th trng thi ca chi tit trong lp rp (Partially constrained hay Fully constrained)

Ty chn Allow Assumtions: bt tt ch Constraint Orientation Assumptions gip lp rp cc chi tit hiu qu hn


Lp rp cc chi tit khng theo tham s - Packaging Vo Insert\Component\Package

Menu Manage xut hin

Cc ty chn: Add: thm thnh phn (chi tit vo lp ghp)

C th chn chi tit t hp thoi Open

Chn chi tit t lp rp

Chn chi tit chi tit cui cng trong lp rp lp li

Move: di chuyn chi tit ti v tr mi

Fix Location: c nh chi ti v tr hin ti ca n

Finalize: to rng buc cho chi tit

79


5. To khung nhn khai trin ca lp rp

Thng mt lp rp gm rt nhiu chi tit. Mt s chi tit c thnhn thy, mt s khng nhn thy sau khi chng c lp vo trong lp rp, do chi tit bn ngoi che khut cc chi tit bn trong. Trng thi ny lm cho ngi nhn rt kh quan st tt c cc chi tit

khc phc trng thi trn mt khung nhn khai trin c sdng trong khung nhn lp rp.

Khung nhn khai trin l mt trng thi trong cc chi tit c dch chuyn t v tr thc ca n, v vy chng c th c nhn thy.


to khung nhn khai trin: M file lp rp, Vo View\Explode\Explode View (khai trin lp rp theo v tr mc

nh)

80


Hiu chnh v tr cc chi tit khai trin(di chuyn cc chi tit tch ra ti mt v tr mi) Vo View\View Manager,

hp thoi View Manager c a ra Chn tab Explode, chn Edit,

v Redefine. Trn Manu Managerchn Position. Hp thoiExplode Position m ra


Cc ty chn trong hp thoi: Translate: Khi ty chn ny c chn cho php ta di chuyn mt chi tit

trn mn hnh t v tr ca n trong lp rp Copy Pos: ty chn ny c s dng khi phc chi tit khai trin

v v tr gc ca n Default Expld: chi tit c chn s c khai trin ti v tr mc nh trn

mn hn Reset: t chi tit c chn v v tr gc ca n trong lp rp

81


6. Hiu chnh lp rp

Ta c th to, xa, v hiu chnh cc Feature t ch lp rp. Khi ta hiu chnh mt b phn trong ch lp rp, nhng thay i st ng cp nht trong cc ch Part v Drawing

Chng ta c th thc hin cc hiu chnh: nh ngha li cc rng buc

Bm phi chut vo tn chi tit cn nh ngha li cc rng buc trn model tree, chn Edit Definition

G b v ly li cc chi tit Bm phi chut vo tn chi tit trn Model Tree, chn Suppress

Hiu chnh cc gi tr kch thc ca chi tit Bm phi chut vo tn chi tit trn Model Tree, chn Active t menu tt,

v kch p ln chi tit cn hiu chnh kch thc. Cc gi tr kch thc hin th trn m hnh. Chn gi tr kch thc hiu chnh. Sau vo Edit\Regenerate


THC HNH T cc chi tit ca m hnh in thoi di ng to, lp rp m

hnh in thoi di ng

82

Bi 6. To bn v k thut


1. Mi trng to bn v k thut - Drawing

vo mi trng to bn v k thut: Chn File\New hoc chn biu tng Create a new object t thanh

cng c Hp thoi New xut hin Chn nt Drawing Nhp tn bn v OK Hp thoi New Drawing xut hin

83


Cc ty chn trong hp thoi New Drawing Default Model: Chn file m hnh m chng

ta cn to cc hnh chiu. Bm nt Brow tm file m hnh

Vng Specify Template Use template: ty chn mc nh, s dng

Template ca ProE

Empty with format: cho php la chn cc

File bn v c nh dng sn, v d: khung

tn,

Empty: khi chn ty chn Empty, hp thoi

New Drawing khc xut hin


Vng Orientation: chn hng ca bn v Portrait: theo hng dc

Landscape: theo hng ngang

Variable: ty bin bng cch nhp vo cc

gi tr kch thc

Vng Size: Standard Size: chn cc bn v vi kch thc

tiu chun A0, A1, .v.v

Inches/Milimeters: chn n v In hay mm

Width/Height: dng nhp chiu rng vchiu cao ca bn v

84


2. To cc hnh chiu

General View: l hnh chiu u tin c t vo trong bn v, y l hnh chiu linh hot nht, ta c th thay i t l, quay mi hng

chn hnh chiu General View vo trong bn v: Chn Insert\Drawing view\

General Chn mt v tr trn mn hnh

t hnh chiu, hnh chiuxut hin v hp thoiDrawing View m ra

Mc nh, ty chn View Typec chn


Chng ta c th thay i tn hnh chiu mc View Name Hng ca hnh chiu trn bn v c chn bng cc ty chn trong

mc View Orientation View names from the model: nh hng gc nhnh hnh chiu trn c

s cc khung nhn lu t model, v d: FRONT, LEFT, BOTTOM, v,v, Geometry references: nh hng gc nhn hnh chiu da trn tham

chiu hnh hc ca m hnh hin th trc trn bn v Angles: nh hng gc nhn hnh chiu da trn gc quay ca tham

chiu c chn. La chn gc quay tham chiu Normal: quay m hnh quanh trc i qua hnh chiu v vung gc vi mn hnh Vertical: quay m hnh xung quanh trc i qua hnh chiu v thng ng, dc

theo bn v Horizontal: quay m hnh xung quanh trc i qua hnh chiu v nm ngang theo

bn v Edge/Axis: quay m hnh quanh trc qua hnh chiu vi mt gi tr gc no

85


Projection View: l hnh chiu trc giao bng cch chiu theo hng vung gc t General View. Ty thuc vo v tr tm ca Projection View so vi hnh chiu chnh (General View), Projection View c th l Top, Front, Left hoc Right

chn Projection View vo trong bn v: Chn Insert\Drawing view\Projection Chn hnh chiu chnh m t chng ta mun chiu ra cc hnh

chiu khc, mt hp mu xut hin

Ko hp nm ngang hoc thng ng ti v tr mong mun, sau bm tri chut t hnh chiu


Detailed View: dng phng to mt vng ca hnh chiu hin c

chn Detailed View vo trong bn v: Chn Insert\Drawing view\Detailed

Chn mt im trn vng hnh chiu

m chng ta mun phng to

V mt ng spline bao quanh vng

m chng ta mun hin th trong

Detailed View, bm phm gia chut

khi kt thc v ng spline

Chn v tr t Detailed View trn bn v

86


Auxiliary View: l hnh chiu ph c chiu theo hng vung gc vi mt b mt hay trc c chn

chn ph vo trong bn v: Chn Insert\Drawing view\Auxiliary

Chn mt cnh, trc, mt chun hay b

mt to hng chiu cho hnh chiu

ph. Mt hp xut hin bao quanh hnh

chiu ph xut hin

Ko hp theo hng nm ngang hoc

thng ng ti v tr mong mun, bm

phm tri chut t hnh chiu


Revolved View: l hnh chiu c to t mt hnh chiu hin cbng cch quay mt ct mt gc 90 quanh mt ct sau chiu n dc theo chiu di

chn ph vo trong bn v: Chn Insert\Drawing view\Revolved

87


Sectional Views: hnh ct, chng ta c th to cc loi hnh ct sau:

Full Section View: hnh ct ton phn


Half Section View: hnh ct bn phn

88


Local Section View: hnh ct cc b


3. Hin th kch thc

hin th kch thc trn bn v chn View\Show and Erase Hp thoi Show/Erase xut hin Chn Show Chn biu tng trong mc Type

S dng tab Options lc cc kch thcchng ta mun hin th: Erased: hin th cc kch thc xa

trc Never Shown: hin th cc kch thc cha

c trn bn v

89


Switch to Ordinate: chuyn cc kch thc thng sang dng kch thc Ordinate

Cc la chn di mc Show By: Feature: hin th cc kch thc cho mt Feature trn bn v Part: hin th cc kch thc cho mt Part trn bn v View: hin th cc kch thc cho cc Features v cc Parts trong mt

hnh chiu Feature and View: Hin th cc kch thc cho mt Feature trn mt

s hnh chiu Part and View: hin th cc kch thc cho mt Part trn mt s hnh

chiu

Show All: hin th cc kch thc trong mt bn v


La chn mt Feature, Part, hay mt hnh chiu hin th kch thc, khi cc kch thc hin ln, tab Preview m ra, cc ty chn trong tab Preview: Sel to Keep: la chn cc kch thc chng ta mun hin th trn bn

v, cc kch thc khng c chn s b xa Sel to Remove: la chn cc kch thc chng ta khng mun hin

th trn bn v, cc kch thc khng c chn s hin th trn bn v

Accept All: gi tt c cc kch thc Erase All: xa tt c cc kch thc

Sau khi kt thc cc la chn, bm OK trn hp thoi Select Bm nt Close

90


THC HNH S dng cc lnh to hnh chiu v mt ct hc, to cc hnh

chiu v mt ct cho chi tit v trong bi tp trc


To v ghi kch thc cho cc hnh chiu ca m hnh 3D sau:

91

Bi 7. Thit k khun trong Pro/ENGINEER


1. Qu trnh to khun

To m hnh khun To mt phn khun Ct khun thnh hai na theo mt phn khun To cc chi tit c lp cha m hnh ca cc na khun Tch khun

92


2. To m hnh khun

M hnh khun biu din khi khun, c to trn c s chi tit mu

to m hnh khun: Chn File\New, hp thoi New xut hin Chn Manufacturing trong mc Type Chn Mold Cavity trong mc Sub-Type Nhp tn File OK


Gi chi tit mu Trong Menu Manager, chn Mold Model Assemble Ref Model

Trong hp thoi Open hin ra, chn tn file chi tit cnto khun

Nhp tn File m hnh vo mcReference Model Name

OK

93


To khi khun Trong Menu Manager, chn Mold Model Create Workpiece Manual

Nhp tn cho khi khun trong hp thoi ComponentCreate

OK


Chn Create feature OK

Trn Munu Manager chn Solid Protrusion Extrude Solide Done Vo mi trng to khi quen thuc

94


Kt qu ta to c hp khun bao ngoi chi tit mu


3. Ct khun

Ct khun l ct khi khun thnh hai phn ti v tr mt phn khun t to ra cc chi tit na khun

3.1. To mt ct khun Mt ct l mt Feature ng vai tr li dao, ct qua khi khun

to ra mt phn khun Cch thc hin

Trong Menu Manager, chn Mold, chn Parting Surf Nhp tn cho mt ct

OK

95


Tip theo chn Add Flat

Chn mt phng Sketch

Chn biu tng Create an entity from an edge

Chn 4 cnh bao ca hp khun

OK mt phn khun c hnh thnh (ng mutm trn hnh v)


3.2. Ct khun Trong bc ny chng ta dng mt phn khun va to ct khi

khun thnh hai na Trong Menu Manager Mold Mold Volume Split Two

Volume All Wrkpcs Done Chn mt phng phn khun va to OK ProE a ra danh sch cc khi s c tch c lp vi nhau Di chut qua tng mc trong danh sch cc

Island, ta s thy khi vt liu tng ng imu ( l hai na khi khun c tch timt phn khun v mt khi vt liu nmtrong lng chi tit mu)

96


4. To cc chi tit na khun

Trong Menu Manager Mold Comp Extract Hp thoi Create Mold Component a ra hai i tng b mt tngng vi hai na khun

Bm nt chn c hai nakhun

OK ProE chuyn hai i tng trn thnh hai chi tit c lp, ghi ra file sau ny c th s dng vo cc vic nh gia cng


5. Tch khun

Trong Menu Manager Mold Opening Define Step Define Move

Chn na khun trn cho dch chuyn Chn mt cnh lm phng dch chuyn Nhp khong cch dch chuyn Tip theo lm tng t vi na khun di Chn Explode to ra trng thi m khun Chn Done/Return khun tr li trng thing nh ban u

97


THC HNH To hai na khun t chi tit sau

Bi 8. CAM trong Pro/ENGINEER

98


1. Gii thiu

Module Pro/NC: l mt module ca Pro/ENGINEER to ra cc dliu cn thit iu khin my CNC gia cng mt chi tit ca ProE.

Nhim v ca Pro/NC: T m hnh thit k, cc d liu cng ngh, tnh ton qu o chy

dao, xut ra file toopath (CL data file) di nh dng ASCII, ngn ngdng trong file ny c dng ngn ng APT (Automatically Programmed Tools)

CL data file cha th dng iu khin my CNC, m phi dng Post-Processor thch hp to ra chng trnh iu khin my chng trnh NC

Cu trc v ngn ng dng trong chng trnh NC phi tng thch vi b iu khin lp trn my CNC.


Ty theo yu cu, PTC c th cung cp cc module sau:

Pro/NC-MILL: cho php phay 2.5 3 trc v gia cng l

Pro/NC- TURN: cho php tin 2 4 trc v khoan l tm

Pro/NC- WEDM: cho php ct dy 2 4 trc

Pro/NC-ADVANCED: cho php phay 2.5 5 trc v gia cng l, thc hin phay/tin v gia cng l trn trung tm phay/tin, tin 2 4 trc, ct dy 2 4 trc

99


2. Cc khi nim v qu trnh gia cng

Machining Process (qu trnh gia cng): l qu trnh trc tip bin i phi (Workpiece) thnh chi tit my (Part).

Operation (nguyn cng): l mt phn c bn ca qu trnh gia cng. Nguyn cng c thc hin trn mt thit b, mt phi, vi mt h ta xc nh.

NC Sequence (bc): l mt phn ca nguyn cng, thc hin ct gt trn mt b mt hay mt t hp cc b mt vi mt dao v mt b cc thng s cng ngh xc nh.

Toolpath (ng chy dao): l ng hnh hc m t qu o ca dao trn m hnh gia cng. Nh ng chy dao ta chng ta c th kim tra bng hnh hc qu trnh ct vt liu.


3. Cc thn phn ca m hnh gia cng

Design model (m hnh thit k): l chi tit thit k, sn phm nhn c sau gia cng, m hnh thit k c dng lm c s hnh thnh cc nguyn cng Cc Features, mt, cnh ca m hnh thit k c chn sinh ra

ng chy dao

1. Cc l khoan2. Cc b mt cn phay

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Workpiece (phi): l phi ban u, c dng gia cng, phi sau khi ct i phn vt liu tha s to nn chi tit cn gia cng Phi c th c biu hin di dng thanh hay vt c, c th c

to ra bng cch thay i kch thc to lng d gia cng hoc xa, n cc features.

V d: hnh di minh ha phi c c thit k bng cch cho n cc l ti v tr 1 v tng kch thc v tr 2, hoc gim kch thc v tr 3

M hnh thit k Phi gia cng


M hnh gia cng (manufacturing model): m hnh gia cng gm chi tit v mt phi lp ghp vi nhau. M hnh gia cng cho php th hin lng d gia cng v m phng gia cng, sau khi c gia cng, phi strng kht vi chi tit. V d v m hnh gia cng c minh ha hnh di: m hnh gm

c chi tit (mu en) v phi (mu xanh)

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4. Cc yu t ca qu trnh gia cng

Cc yu t vt cht ca qu trnh gia cng c th hin di dng cc m hnh gia cng v c lu thnh cc file.

ProE s dng cc file sau:

Ref.Model.part (Design Model): l m hnh cui cng phi hon thnh Workpiece: l phi ban u gia cng nhn c Ref.Model

Manufacturing.asm l m hnh lp rp ca phi v chi tit

Manufacturing.mfg: l file cha m hnh lp rp v cc d liu cng ngh


5. Trnh t thc hin

5.1. To m hnh gia cng V d lp trnh gia cng chi tit c bin dng, hc v l nh hnh di

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Chn File\New, hp thoi New xut hin

Chn Manufacturing NC Assembly

Nhp tn file

OK

ProE to ra file *.Mfg trng, sn sng

nhn cc thng s hnh hc v cng

ngh gia cng


T Menu Manager chn Mfg Model Assemble Ref Model Chn tn file chi tit cn gia cng Open Hp thoi Component Placement xut hin Chn Assemble component

at default location OK Chn Done/Return t

Menu Manager

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a phi vo m hnh gia cng D liu phi c th c cha trong file .Prt c lp

hoc c to ngay trong file m hnh gia cng to phi trong file m hnh gia cng:

T Menu Manager chn MFG Model CreateWorkpiece

Nhp tn phi Tip theo chn Solid Protrusion

Extrude Solid Done


ProE m bng nhp Extrude, chn Placement Define Chn mt phng Sketch T thanh cng c Sketcher, chn

v ln lt chn tt c cccnh bin ca ca ch nht

Sau khi chn tt c cc cnh yca chi tit lm thnh chu vi khpkn, chn biu tng trnthanh cng c Sketcher

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Quay li bng nhp tham s Extrude nhp khong ko (trong v d ny nhp gi tr 50)

Bm khi hp biu din phi xut hin Ta to c m hnh lp rp chi tit lng phi


Hoch nh tin trnh cng ngh Chi tit trong v d c gia cng bng mt nguyn cng (nguyn

cng phay), thc hin trn my phay ng 3 trc. Nguyn cng gm 4 bc sau:

1. Phay bin dng ngoi to khi ch D(t tn l Profile)

1. Phay hc ch nht (t tn l Pocket)2. Khoan 6 l ng knh 10 (t tn l Drill1)3. Khoan l ng knh 15 (t tn l Drill2)

Chng ta phi tnh ton cc thng s cngngh

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Bng cc thng s cng ngh


5.2. To nguyn cng

Trong bc ny chng ta phi chn my gia cng, xc nh ta gc phi, mt phng thot dao

V qu trnh gia cng ch qua mt nguyn cng nn chng ta ch phi thc hin bc ny mt ln

Cch thc hin:

Trong Menu Manager, chn Mfg Setup

Hp thoi Operation Setup xut hin

chn my, xc nh ta ca phi,

mt phng thot dao

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Chn v nhp cc thng s trong hp thoi Operation Setup Operation Name: t tn nguyn cng, v d Phay NC machine: xc nh loi my gia cng, chn Hp thoi Machine Tool Setup

xut hin

Chn Mill mc Machine type Chn 3 Axis mc Number

Of Axes OK


Machine Zero: nh ngha h ta phi (im Zero phi) cn ch nh gc ta v phng cc trc X, Y, Z Chn nt sau chn Create Chn phi Bm v gi phm Ctrl + chn 3 mt phng xc nh gc h ta phi

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cc trc ta hng theo 3 cnh ca khi hp phi, s dng nt Fliptrong Tab Orientation chn hng ph hp

Phng cc trc trn phi phi ng vi hTrc ta trn my, nu khng khi gia cngS b sai kch thc

Ch chiu dng ca trc Z phi hng rakhi phi nu khng s nguy him trong qutrnh gia cng

H ta trn phi


Retract: l mt phng an ton, xc nh v tr dao trc v sau khi thc hin mt bc gia cng. Mt phng ny nm ngoi phi v cch mt phi mt khong nht nh Trong trng Retract ti vng Surface, chn nt nh ngha mt phng

an ton Hp thoi Retract Selection xut hin, chn

Surface Along Z Axis Nhp vo khong cch theo trc Z

Enter Z Depth (v d 15) OK

n y nguyn cng Phay nh nghaxong, tuy nhin mi ch cha cc thng schung, cha c lnh gia cng no. Tip theochng ta phi nh ngha cc bc cng ngh gia cng cc b mt c th

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5.3. To cc bc (NC Sequences)

5.3.1. Phay bin dng (Profiling) Phng php ny dng phay th hoc

phay tinh mt b mt thng ng hoc xin.Mt ng chy dao theo Profile s cto ra, c b bn knh dao m bo kchthc theo yu cu

Trong Menu Manager, chn Machining NC Sequence Machining Profile, 3 Axis Done. Trong hp thoi SEQ SETUP, nh du cc : Name, Comments, Tool, Parameters v Surface, sau chn Done.


Name: g Profile t tn choNC Sequence

Comments: g li ch gii, v dphay bin dng ngoi OK

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Tool: nh ngha thng s daobng cch in cc gi tr vohp thoi Tool Setup


Parameters: chn Set trong Menu Manager m hp thoi Param Tree CUT_FEED: lng chy dao, nhp

360 (mm/ph) STEP_DEPTH: chiu su mt lp ct

Nhp 5 (mm) PROF_STOCK_ALLOW: lng d li theo Profile, thng l giacng tinh. Nhp 0 (khng gia cngTinh)

CHK_SRF_ALLOW: lng d trn b mt kim tra va chm. Nu khng t ch kim tra va chm th khng nhp gi tr ny

WALL_SCALLOP_HGT: chiu su lp ct khi gia cng khi (Volume Milling). Khi khng dng ch ny gi tr 0

110


SPINDLE_SPEED: tc trc chnh, nhp 1500 (v/ph) COOLANT_OPTION: ch ti dung dch trn ngui, OFF (khng ti) CLEAR_DIST: khong chc an ton so vi mt phng an tonSau khi nhp xong cc thng s, chn File Save. Nhp tn File OKSau chn File Exit

Surfaces: Xc nh b mt (Profile) gia cng Chn Model Done Add, Surface,

sau chn chnh xc b mt cn gia cng Done Done/Return.

Chn cc b mt hnh thnh Profile cn gia cng


kim tra kt qu, chn Play Path Screen Play. Hp thoi Play Path

m phng di dng solid,chn NC Check Run

Chn Done Sequ Done/Return ktthc

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5.3.2. Phay hc (Pocketing) Bc ny nhm phay hc ch nht trn nh chi tit Chn Maching NC Sequence New Sequence Machining Poketing Done.

T Menu Manager, chn cc : Name, Comments,Tool, Parameters, Surfaces. Cui cng chn Done. Name: g tn bc Pocketing Comments: ghi ch gii phay hc ch nht Tool: nh ngha dao

Nhp ng knh dao l 10 Nhp 2 vo Number of teech Chn Apply OK


Hp thoi nhp cc thng s dao

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Parameters: Chn Set t Menu Manager, hp thoi Param Tree xut hin Nhp cc thng s vo bng BOTTOM_SCALLOP_HGT: chiu

su lp ct y khi gia cng khi SCAN_TYPE: kiu ct, i vi phay

hc c th chn cc kiu sau:


1. TYPE_1: Ct thng, gp o th nhc dao qua2. TYPE_SPIRAL: ct theo ng xon c, gp o

th chy vng quanh3. TYPE_2: ct thng, gp o th chy vng quanh4. YPE_3: ct lin tc theo tng vng, ht mt vung

th nhc dao sang vng khc, gp o th chy vng quanh.

5. TYPE_ONE_DIR: ch ct theo mt chiu, n cui ng th nhc dao, chy v pha u vct tip nh ng trc

6. TYPE_1_CONNECT: ct mt chiu, ht mt ng th nhc dao, chy nhanh vpha u, khoan xung v ct tip nh c, nu c ng bn cnh th ct ni trnh va chm

Khi phay hc thng chn 4 kiu: TYPE_1, TYPE_2 TYPE_3 v TYPE_SPIRAL

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Surfaces: chn cc b mt hnh thnh hc, gm cc thnh v y Chn Play Path Screen Play kim tra kt qu m phng di dng Solid chn NC Check Run


5.3.4. Khoan cc l 10 (Holemaking) Bc ny khoan 6 l cng ng knh 10 Trong Menu Manager chn Machining NC Sequence New Sequence Machining Holemaking Done Drill Standard Done.

Trong menu bn di chn cc : Name,Comments, Tool, Parameters, Holes,sau chn Done.

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Name: g Drill1 Comments: g ch gii, v d khoan 6 l OK Tool: nhp cc thng s dao


Parameters: chn Set trong Menu Manager, nhp cc thng s vo trong hp thoi Param Tree BREAKOUT_DISTANCE: khong chy qu ca mi khoan, thng dng

khi khoan l thng

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SCAN_TYPE: quy nh th t khoan cc l1. TYPE_1: chy theo chiu dng

ca trc Y v chy i chy li theotrc X

2. TYPE_SPIRAL: chy vng theochiu kim ng h

3. TYPE_ONE_DIR:chy theo chiutng X, gim Y

4. SHORTEST: h thng t xc nh sao cho khong chy khng ct l ngn nht CLEAR_DIST: im kt thc chy dao nhanh, bt u chy dao vi tc

gia cng, mc nh -1 PULLOUT_DIST: im dng dao sau khi khoan. Gi tr mc nh (-), dng

chnh im CLEAR_DISTSau khi nhp xong cc thng s, chn File\Save, sau File\Exit, ri chn

Done


Hp thoi HoleSet xut hin Hole Selection: cho php chn 6 phng php

chn l khc nhau:1. Axes: Cho php chn tng l nh ng tm2. Group: Chn mt nhm l c thit lp trc3. Points: chn v tr khoan nh im chun (datum

point)4. Diameters: Chn cc l cng ng knh5. Surfaces: Chn cc l cng nm trn mt b mt6. Parameters: Chn mt l theo thng s no

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Depth: xc nh chiu su ca l Blind: ch im u v im cui ca mi

khoan bng cch nhp gi tr Z hoc ccb mt tng ng

Auto: chiu su l c xc nh t ngtheo kch thc thit k

Through All: khoan thng Mc Tool Depth: cho php tnh chiu su

l theo nh mi khoan (Tip) hoc phn thn (shoulder) Chn Play Path Screen Play kim tra kt qu


5.3.5. Khoan l 15 Lm tng t nh khoan cc l 10 Trong hp thoi Select Hole Diameter chn Diameter l 10

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Nh vy chng ta thc hin xong 4 bc ca nguyn cng Phay.

kim tra ton b nguyn cng, trong Menu Manager, chn CL Data Ouput Operation.

Chn Phay Play Path Screen Play Done kim tra ton b nguyn

cng m phng di dng solid, chn NC Check Run


5.4 Ghi v s dng CL Data File

5.4.1. Xut CL Data ra File Trong Menu Manager, chn Manufacture Machine CL Data Output Select set => Creat tn Operationhoc tn NC Sequence

M Menu Create Set, chn ton b cc nguyn cng Chn Done Sel

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Trong menu Output Type, nh du chnCL File v Interactive Done


Trong hp thoi Save a Copy Nhp tn file OK

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5.4.2. c d liu t file Khi ng ProE File\Open Chn tn file gia cng M hnh xut hin trn mn hnh T Menu Manager, chn CL data Operaton tn nguyn cng

(Phay) Display Done chy m phng dng solid, chn NC Check Run.


THC HNH Lp trnh gia cng cho chi tit sau

bai giang pro-e-bai 1-8

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