Olimpic Chi Tiet May 16-08-2010 [Compatibility Mode]

NG DNG TIN HC TRONG THI OLYMPIC MN CHI

TIT MY

1

Ngi trnh by: PGS. TS. Nguyn Hu Lc

NI DUNG TRNH BY

I. Gii thiu ng dng tin hc trong c hcmy va thit k chi tit my

II. M hnh ha vi Autodesk InventorIII. Phn tch kt cu, m phng, ng hc v

ng lc hc phn mm Inventor

2

ng lc hc phn mm InventorV. V d ng dng tin hc trong olympic Chi

tit my va xut

PGS. TS. Nguyn Hu Lc

Phn I. Gii thiu ng dng tin hc trong c hc my v thit k chi tit my

3


ng dng cc h thng CAD/CAE gii quyt cc vn sautrong thit k my va chi tit my:- Tnh ton thit k cc chi tit my- V bn v 2D (AutoCAD..) - To m hnh 3D: wireframe, mt cong v solid. T m hnh bachiu:

+ Hin th hnh nh: mu sc, cht liu v nh sng.

4

+ Hin th hnh nh: mu sc, cht liu v nh sng.+ Din hot my tnh+ M phng lp rp, chuyn ng, ng hc, ng lc hc.

+ Tnh ton phn tch v thit k ti u.+ To cc bn ve ky thut 2D t m hnh 3D+ Chuyn d liu gia cng va to mu


1.1 Qu trnh thit k

5

1.2 Cc h thng CAD, CAE

Cc h thng tch hp bao gm: Unigraphics (NX), Ideas NX, Pro/ENGINEER, Catia, CADCEUS thch hp cho cc i cng ty. - V cng c CAD th Pro/ENGINEER hn ch hn NX v CATIA.

- CAM th NX tt hn. CAE th c ba nh nhau.

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Pro/ENGINEER l phn mm CAD u tin a ra khi nim Parametric v rt mnh v m hnh solid, CATIA v NX l hai phn mm rt mnh v dng ng cong v mt cong v s dng dng mt cong t do sau chuyn thnh solid trong thit k. Do trong lnh vc thit k t v my bay, CATIA v NX c dng nhiu hn Pro/ENGINEER (trong ngnh t th NX 25%, Catia 26%, Ideas NX 11%, Pro/E 7% cn li l cc phn mm khc).


Cc phn mm theo nhm chc nng: thit k m hnh 3D hoc bn v 2D, phn tch phn t hu hn, m phng ng lc hc Gi thnh r hn, khai thc tnh nng tng i n gin nn ph hp cc cng ty nh v va. Bao gm:- Phn mm CAD: Autodesk Inventor (c phn Design Accelerator tnh ton thit k chi tit my), AutoCAD, SolidWorks, SolidEdge, Intergraph, Mechanical Desktop, CADAM,, ThinkDesign l cc phn mm hng trung ph bin.- Cc phn mm CAE: ANSYS, MSC Nastran, SIMULIA (Abaqus), Autodesk Algor Simulation, DADS, ADAMS

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(Abaqus), Autodesk Algor Simulation, DADS, ADAMS- Cc phn mm CAM: MasterCam, PowerMILL, SolidCAM, Vericut, Duct, Cimatron, Visi- Cc phn mm din hot my tnh: 3D Studio VIZ, 3DS MAX, Envision, Vis Mockup- Cc phn mm h tr thit k to kiu dng cng nghip -CAID: Autodesk Alias Studio, CATIA Shape Design and Styling, NX Shape Studio, solidThinking, Rhinoceros

Ngoi ra cn cc phn mm chuyn dng, c s dng ch cho 1 lnh vc c th. Ta c th pht trin cc phn mm theo hng ny.


Mt s thng tin thm v cc h thng CAD/CAM:

T nhng nm 2004 tr v sau th cng nghip phn mmCAD nm trong tay 4 nh sn xut ln: 3 cng ty gii phpPLM: Dassault vi CATIA v ENOVIA, Simens PLM softwarevi Unigraphics v iMAN, PTC vi Pro/ENGINEER vWindChill v cng ty Autodesk vi ADP (Autodesk solution forDigital Prototyping): Autodesk Inventor, AutoCAD... Gia ccphn mm hng trung l s cnh tranh gia SolidWorks(Dassault), Inventor (Autodesk) v SolidEdge (Simens)

Th hng cc cng ty s hu cc h thng CAD/CAE trong nm 2009 (ng u l Microsoft v IBM):- Autodesk (hng 16) s hu: AutoCAD, Autodesk Inventor

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- Autodesk (hng 16) s hu: AutoCAD, Autodesk Inventor (bao gm Mold design v Simulation), AutoCAD Mechanical, Autodesk Algor Simulation, Autodesk AliasStudio, Autodesk Moldflow, AutoCAD Architecture, Autodesk Maya, Revit Architecture, Autodesk 3ds Max, AutoCAD Civil 3D- Dassault (hng 17) s hu: Catia, Solidworks, SIMULIA (Abaqus), DELMIA, ENOVIA v 3DVIA - PLM Siemens software (hng 40): Unigraphics, Ideas NX, SolidEdge, Feamap, iMAN- PTC (Parametric hng 50): Pro/ENGINEER, Windchill, Mathcad, ProductView, CoCreate, InSight


Autodesk Inventor

Trong cc nm gn y pht trin nhanh chng, c phttrin t nm 1999 v n 2005 l phn mm CAD bn chynht trn th gii. Ngoi chc nng m hnh ha trongAutodesk Inventor cn c th:

M phng lp rp.

9

Tnh ton chi tit my. M phng ng hc, ng lc hc. Phn tnh kt cu chi tit v m hnh lp rp: ng sut, bin

dng, tn s dao ng ring. Thit k ng ng


Phn II. M HNH HA SN PHM C KH

Trong CAD c phng php xy dng m hnh 3 chiu:- u tin to solid c s, sau khc, ct, dn bng cc

php i s boole. ng dng trong Pro-ENGINEER, SolidWorks, Autodesk Inventor, SolidEdge

- To hnh t nhng mt cong phc tp trn c s nhngng cong bin 3 chiu, sau to mt cong va chuyn sang solid. ng dng trong CATIA, Unigraphics (NX), Autodesk Alias

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solid. ng dng trong CATIA, Unigraphics (NX), Autodesk Alias Studio, Rhinoceros

- Nn hnh - tng t vi cc thao tc lm vic nn, ko gin, to hnh vi t st. y l k thut dng hnh CAD 3D dngtrong ngnh m thut cng nghip, mt k thut dng hnh srt mnh trong tng lai. ng dng trong ThinkDesign


11


2.1 Autodesk Alias StudioAutodesk AliasStudio (tn c l Alias StudioTools). y l cng

c pht tho, m hnh ha v to hnh nh c kt hp vo 1 phn mm. p ng yu cu nh thit k: v pht tho, v t do hnh dng v kiu dng sn phm, to hnh dng kt cu, to hnh nh tht xem trc hnh dng sn phm v trao i d liu cc phn mm CAD khc.

y l phn mm CAID, khc vi CAD, l cng c chuyn v hng kiu dng ca thit k, tc l hnh dng bn ngoi ca sn phm. N khng i vo thit k chi tit chnh xc nh cc

12

sn phm. N khng i vo thit k chi tit chnh xc nh cc h thng CAD: Inventor, Pro/ENGINEER, SolidWorks , tuy nhin Alias c cc cng c mnh to ng cong v mt cong chnh xc.

T phin bn 2010, Autodesk AliasStudio chia thnh cc sn phm ring bit: Autodesk Alias Automotive (tn c Autodesk AutoStudio), Autodesk Alias Design( tn c Autodesk DesignStudio), v Autodesk Alias Surface (tn c Autodesk SurfaceStudio).


13http://www.carbodydesign.com/tutorials/?id=1836

2.2 Phn mm Autodesk Inventor

C th ng dng phn mm Autodesk Inventor trong cc mn Nguyn l my, Chi tit my v c s thit k my:-M hnh ha chi tit

-M hnh ha bn v lp

- M phng lp rp, ng hc v ng lc hc

- Phn tch kt cu, thit k ti u

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1. M hnh ha chi tit (Part Modelling)

Part Modeling l mi trng m hnh ha tham s chi tit 3D bng cc cng c ca phn mm.

- Phn tch kt cu, thit k ti u

- Tnh ton chi tit my

- Lp ti liu thit k t cc m hnh 3D


CSG

15

B -rep


Part Modelling

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2. Lp rp Assembly

Assembly Modeling l mi trng lp rp cc chi tit m hnh ha trong Part Modeling thnh cc cm lprp hoc kt cu my hon chnh. Nhng c cu, ktcu phc tp c lp rp d dng trong mi trngAutodesk Inventor, s dng cc rng buc thng minhnh: Angle, Flush, Insert, Mate, Tangent, Motion.

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nh: Angle, Flush, Insert, Mate, Tangent, Motion.

C 2 phng php: Top down hoc Bottom up.


Cc chi tit lp rp c th c to trong cng mt bn vhoc c th nhp t cc bn v khc. Trong mi trng nybao gm c Design Accelator - tnh ton v m hnh ha ccchi tit my, Wedment Assembly - lp cc chi tit bng mighp hn v Frame Generator to kt cu khung. Ngoi racn c Content Center l th vin cc m hnh chi tit tiuchun.

18

chun.

Video qu trnh lp rp C cu Norton


Bn v lp 3D

19


3. Trnh din lp rp

Qu trnh lp c th hin r rng, trc quan trn mi trng Autodesk Inventor v c th m phng lp rp trn mi trng Presentation:

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M phng lp rp hp gim tc trc vt

21


M phng lp rp cc ni trc

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4. To bn v 2D t m hnh 3D (Drawing)

To bn v k thut 2D, 3D t 3D solid, kim loi tm, lp rp v trnh din lp rp. File bn v vn gi s lin kt vi cc file gc. To bn v k thut ph thuc vo h thng chiu: h thng A (gc chiu th ba) hoc h thng E (gc chiu th nht).

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Hin nay cc ti liu thit k da trn c s cc bn v 2D v bn v 2D vi bng k chi tit thit k, biu , kch thc tht, dung sai, ch thch v nhng yu cu k thut khc.


Cc phng php to bn v trong k thut bao gm:- Trc tip to bn v k thut trong 2 chiu (sp tr thnh qu kh AutoCAD) - Chuyn t m hnh hoc mt cong 3D thnh cc bn v 2D (Hin nay)- Trc tip thit k t m hnh solid hoc mt cong 3D v to bn v 3D (Thi im chuyn tip - Tng lai gn).

24

bn v 3D (Thi im chuyn tip - Tng lai gn).

http://www.youtube.com/watch?v=gTKSBzg67xs


a. Bn v chi tit 2D

25


b. To bn v lp 2D

11

12

15 16 17 18 19 20 212223

24

26

1314

25 27 28

315

261 2 3 4 5

678910

25k6

3828

H8K6 H8

k6

330

136

385

35k6

80H762H7

123456789101112131415161718192021222324

262728

STT K HIEU TEN GOI Slg Klg VAT LIEU T Ghi chuNap o trucVong pht

Banh rang lnO bi

Banh rang nhoVong chan dau

Truc danem lot

Truc b danVt M8

Que tham dauBu long M10ai oc M10Vong em

Bu long vong M8Vt M8*22

Nap ca thamNut thong hi

em lot nap caNap hop

Bu long M12ai oc M12Vong emThan hop

Nut thao dauM16*1,5

Chot truLo bu long M16

4214141412414442411116661

124

165

25 em lot 1

GX 15-32Cao suCT 45

DL100CrCT45XevanitCT45N

CT45CT38CT38CT38CT38Mn65CT38CT35CT31CT31N

GX 15-32CT38CT38Mn65

GX 15-32N

CT31CT45

GX 15-32

30386362207

164954,54407,6

52328,71460

8u2 = 2u1 = 3,318

321Thong so

Truc

Momen xoan T(Nmm)So vong quay n(vg/ph)

Cong suat P(Kw)T so truyen (u)

Yeu cau ky thuat1.Boi lp sn mong tren be mat lam viec cua mot trong hai banh rang ,quay chung an khp mot vong .Kiem tra va ieuchnh khoang cach truc sao cho dien tch mat rang an khp khoang 50% theo chieu cao va 40% theo chieu rong rang.2. o khong ong tam gia mat lo banh rang va ng tron c s nam trong khoang :0,05-0.1 mm3. Dung sn va cac vat lieu khac che kn cac be mat lap ghep nham tranh hien tng ro r dau4. o dau vao hop sao cho dau ngap khoang gap 2 chieu cao rang cua banh rang.5.Cho chay khong tai vi van toc 1000vg/ph e kiem tra cac rung ong, tieng on, qua nhiet cua dau boi trn6.Lo chot nh v nap va than hop c gia cong sau khi a lap va ieu chnh

Dau Khoi lng T leS Slg So tai lieu Ch ky NgayThiet ke

Kiem tra

TRNG H BACH KHOATPHCM KHOA: C KH LP: C 01/1

So t: 1T : 1

1:1Nho hn200 kgN H Loc

Tr. M.Tien

HOP GIAM TOC

O AN MON HOCC NG DUNG

270


c. Bn v 3D

27

Bn v 3D cha c tiu chun ho. Ngun: UGS - NX Mach Series Design Solutions.


d. To bn v lp 3D t m hnh 3D

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36

35

34

33

32

312928

27

26

25

24

17

18

19

21

22

23

30

20

29H? P GI?M T? C

BNH RANGNGHING 1 C?P

Ch kySlgThiet keH. danDuyet

S.V. Qu?c ?t

N. Hu Loc

So tai lieu NgayTy le

1:1.25

ai hoc Bach khoa TP HCMKhoa C kh

Dau Khoi lng

29

30

31

32

33

34

46306

309

35

SolgKy hieu Chu thchV

tr

Ten goi

Mien

Kho giay

o An He Thong Truyen ongC Kh

Thi?t K? Tr?m D?n ?ng Thng Tr?n

T : 1 So t : 1

1

2

3

4

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

5

Bu lng ghp bch n?p v thn M12

9

1

2

3

4567810111213

14

15

16

Banh rang 2

O lan 1

Vong pht 2

Truc 2

Nap o 3

Ong lot 2

Banh rang 1

Vong chan dau 2

Truc 1

Nap o 1

Ong lot 1

Nap o 4

Then 8x7

1

2

1

1

2

1

1

1

2

1

1

2

1

1

2

1

1

2

1

1

1

4

24

Vt tach nap M10

Vt n?p ? M8

Nap quan sat

Nut thong hi M27

Chot nh v

Que tham dau

Nut thao dau M20

1

1

1

1

2

1

Vong em n?p quan st

Vong chan dau 1

Nap o 2

Vong pht 1

O lan 2

Then 14x9

Thn h?p

N?p h?p

Bu lng c?nh ? M12

ai oc M12

Vong em venh M12

6

10

10

4Vt n?p quan st M8

L thp m?ng 2 2

L thp m?ng 1 2

1Vong em nt tho d?u

36


5. Design Accelator- tnh ton v thit k chi tit my

ng dng Autodesk Inventor tnh ton v thit k cc chi tit my sau:

30

Ngoi ra trong Autodesk Inventor cn c s tay tra cu cc chi tit my (Engineers Handbook).


Thit k b truyn bnh rng

31


V b truyn bnh rng

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La chn hm bin dng cam

33


Phn III. PHN TCH KT CU, NG HC V NG LC HC

Lnh vc thit k my tp trung vo kt cu vchuyn ng my. ng dng h thng CAD/CAE trongthit k my lin quan n ti u kt cu v m phngchuyn ng v ng lc hc my. Tuy nhin trnh t thitk chi tit, h thng v qu trnh s khc nhau.M phng ng hc trn my tnh: M phng my tnh lmt qu trnh m hnh ho v phn tch chnh xc mt tnhhung thc theo yu t thi gian trong mt mi trng o.

34

hung thc theo yu t thi gian trong mt mi trng o.M hnh o ba chiu tng ng vi cc c im

ca sn phm trong thc t v thc hin qu trnh tnhton phn tch v m phng chng trong mi trng mytnh.

Cc phn mm m phng tch hp trong cc hthng CAD, CAD/CAE nh: MSC ADAMS, DynamicDesigner, SIMPACK, LMS DADS, MECANO, FEDEM,Universal Mechanism, Visual Nastran Desktop 4D,Working Model, Autodesk Algor Simulation...


M hnh tht

M hnh my tnh

M hnh tht c cu khng gian

Phn III. PHN TCH KT CU, NG HC V NG LC HC

35

M hnh tht c cu khng gian

M hnh my tnh

Dng ng cong


3.1 M phng ng hc (Dynamic Simulation)

K thut m hnh ha lp rp cng l mt c tnh quantrng ca Autodesk Inventor. Bao gm c Dynamic Simulation cho php m phng ng hc v ng lchc. ng dng:

- Phn tch v tng hp c cu.- S dng m hnh ha v m phng chuyn ng, ng hc v ng lc hc cc c cu v h thng truyn

36

ng hc v ng lc hc cc c cu v h thng truynng, my v h thng.

- To cc m hnh o trong cng tc o to.1. M phng 2D 2. M phng 3D3. C cu 1 bc t do, kn (cc c cu thng dng)4. Nhiu bc t do, h (tay my)5. Phng, Khng gian


m phng ng hc c cu hoc b truyn thc hintheo trnh t sau:

37

Video qu trnh m phng ng hc C cu Norton


M phng ng hc my may

38


Quy ao iem tren c cau

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Tay gp sn phm

40


M phng tay my

41


M phng ton b my hoc qu trnh

42


43


Ty vo ch tiu tnh ta phn tch bn, cng, truyn nhit, dao ng, bn mi Cc chi tiu ny c y u trong cc mdun ca cc h thng CAE.

Cc bc phn tch

Bc 1: n gin ha m hnh hnh hc

3.2 Phn tch kt cu

45

Bc 1: n gin ha m hnh hnh hcBc 2: Gn vt liuBc 3: Thm vo h thng ta Bc 4: Gn rng buc v ti trng.Bc 5: Xem xt v to b mt li phn tBc 6: Xut d liu FEM. Bc 7: Tnh ton v nh gi kt qu


Cc h thng CAD (Catia, Unigraphics NX,Pro/ENGINEER, I-DEAS NX, Solidworks, Solid Edge, AutodeskInventor, Mechanical Desktop) m hnh ho hnh dng hnhhc ca sn phm da trn tham s, sau c xut trctip qua h thng CAE (SIMULIA (Abaqus), ANSYS, ALGOR,COSMOS, MSC Nastran, HyperWorks, FEDEM, SAMCEF,MSC SimXpert, LMS DADS, FEMLAB). H thng CAE stin hnh chia li, t iu kin bin, gn ti trng, thit lpc tnh vt liu v nhng thng tin lin quan khc v sau

46

c tnh vt liu v nhng thng tin lin quan khc v sau tin hnh phn tch FEA.

Tuy nhin hin nay trong cc h thng CAD tchhp bao gm c chc nng phn tch FEA v cc cc h thngCAE c kh nng m hnh ha. V d Autodesk Inventor tchhp ANSYS Workbench, SolidWorks tch hpCosmosworks


1. Autodesk Inventor v ANSYS Workbench

47


Tn s dao ng ring

48


MOI TRNG LAP RAP (a c rang buoc)

Khi ong DYNAMIC SIMULATION

T ong chuyen oi rang buoc gia cac khp

Gan them rang buoc thong thng(Spring,2DContact...)

Kiem tra cac rang buoc tha va sa cha

Tao cac rang buoc trong moi trng mo phong(Thiet lap v tr ban au, gan trong lc...)

Chay mo phong DYNAMIC SIMULATION

Phan tch ket qua t OUTPUT GRAPHER

3. Kt hp gia Dynamic Simulation v Stress Analysistrong Autodesk Inventor.

49

ieu chnh khp

ieu chnh oi tng

ieu chnh moi trng lam viec

Chay lai mo phong DYNAMIC SIMULATION

Mo phong thanh cong va xuat ket qua

Chuyen gia tr lc mo phong oi tngsang moi trng Stress Analasis

Hieu chnh oi tng mo phong bang Stress Analasis

Phan tch lai / anh gia trc quan oi tng

Chay mo phong va phan tch lai oi tng

Ket thuc phan tch mo phongPGS. TS. Nguyn Hu Lc

50PGS. TS. Nguyn Hu Lc

Trong cc phin bn mi ca Inventor cn bao gm Parametric Studies v Optimization technology cho php ta hiu chnh cc thng s thit k trong mi trng phn tch ng sut m hnh lp v chn cc la chn thit k khc nhau. Khi chn li gii tt nht, Inventor s cp nht m hnh 3D theo cc thng s ti u (H.9.9).Trong cc phin bn mi caInventor cn bao gmParametric Studies vOptimization technology chophp ta hiu chnh cc thngs thit k trong mi trngphn tch ng sut m hnhlp v chn cc la chn thitk khc nhau. Khi chn ligii tt nht, Inventor s cp

51

gii tt nht, Inventor s cpnht m hnh 3D theo ccthng s ti u).


Chng ta c th xy dng m hnh bng nhiu cch khcnhau. Trn c s bng phn loi c cu v b truynchng ti to c th vin m hnh hnh hc v mphng ng hc cc c cu v b truyn nh sau

3.3 Th vin m phng ng hc

52


53


54


Cc c cu

55


56


H thng truyn ng

57


H thng truyn ng

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Phn IV. V D NG DNG THIT K SN PHM C KH TRN C S M PHNG

59


Qu trnh thit k ng thi cho sn phm c kh c chia thnh cc bc sau:

1) Bc 1: Phn tch nhu cu th trng hoc do pht trin cng ngh mi.

2) Bc 2: Xc nh cc tnh nng k thut ca sn phm thit k.

60

3) Bc 3: tng thit k, la chn phng n.4) Bc 4: Thit k chi tit (k thut) sn phm.5) Bc 5: Ch to sn phm6) Bc 6: a sn phm ra th trng.

Theo LTC


61


La chn phng n ( tng thit k)

62

Mt trong cc nguyn cng c chn lm phng n thit k


63


Thit k k thut

64

Kt qu tnh ton cc chi tit trn my tnhPGS. TS. Nguyn Hu Lc

65


66

V pht tho nguyn cng PGS. TS. Nguyn Hu Lc

67

M hnh ha v lp rp cc chi tit


68M phng lp rp v ng lc hc cc cm chi tit


69

Hon thin bn v 2D v m hnh 3D


70


71


72


73


74


75Lp ti liu thit k: t m hnh 3D to cc bn v lp 2D, chi tit 2D PGS. TS. Nguyn Hu Lc

PHAN V. ng dng tin hc trong olympic Chi tit my

Hin nay mt s nc t chc thi olympic ng dng tin hc vo mn Chi tit my v c s thit k my.

V d hnh thc thi mn Thit k A mn hc Chi tit my.

76


77


78


79


Mi i 4 ngi, 2-3 my tnh s thc hin 2 phn chnh:

-Tnh ton h thng truyn ng c kh v thc hin bn v.- Tnh ton bn cho khung bng ti v cc con ln, th hin m hnh 3D.

80

Thi gian thc hin 4 gi. Theo nhn xt cc k thi th phn tnh ton h thng truyn ng th tnh ton v thit k d dng (v lm AMH), tuy nhin phn m hnh ha 3D khung bng ti v phn tch cn kh khn.


kin xut

i vi mn Chi tit my, da trn kh nng phn mm Autodesk Inventor, v hin nay cng ty Autodesk ang c chnh sch h tr cho cc trng i hc c s dng phn mm ny min ph th ta hon ton c th t mm ny min ph th ta hon ton c th t chc thi mn ny.

Cuc thi c th t chc thnh 2 phn:- Phn l thuyt c th thi nh c (2 3 gi)- Phn thc hnh thi theo nhm trn my tnh

81


Hnh thc thi T chc theo nhm 4 ngi, 4 my tnh

cho mi nhm. Thi gian 4 gi. Thi tptrung theo cm.

Ni dung thi:1. Tnh ton cc chi tit my bng phn1. Tnh ton cc chi tit my bng phn

mm Autodesk Inventor.2. M hnh ha 3D phn h thng truynng

3. To bn ve 2D4. To m phng lp rp

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Hnh thc xt gii thng

1. Gii thng phn l thuyt (C nhn)2. Gii thng phn thc hnh (theo nhm)3. Gii thng tng hp (L thuyt + im

c nhn chia u trong nhm)c nhn chia u trong nhm)

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CM N QU THY C CH LNG NGHE

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Olimpic Chi Tiet May 16-08-2010 [Compatibility Mode]

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Transcript of Olimpic Chi Tiet May 16-08-2010 [Compatibility Mode]