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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
PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
1.1 Qu trnh thit k
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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).
PGS. TS. Nguyn Hu Lc
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
7
(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.
PGS. TS. Nguyn Hu Lc
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
8
- 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
PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
11
PGS. TS. Nguyn Hu Lc
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
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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).
PGS. TS. Nguyn Hu Lc
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
14
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
PGS. TS. Nguyn Hu Lc
CSG
15
B -rep
PGS. TS. Nguyn Hu Lc
Part Modelling
16
PGS. TS. Nguyn Hu Lc
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.
PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
Bn v lp 3D
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PGS. TS. Nguyn Hu Lc
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:
20
PGS. TS. Nguyn Hu Lc
M phng lp rp hp gim tc trc vt
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PGS. TS. Nguyn Hu Lc
M phng lp rp cc ni trc
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PGS. TS. Nguyn Hu Lc
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.
PGS. TS. Nguyn Hu Lc
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).
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bn v 3D (Thi im chuyn tip - Tng lai gn).
http://www.youtube.com/watch?v=gTKSBzg67xs
PGS. TS. Nguyn Hu Lc
a. Bn v chi tit 2D
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PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
c. Bn v 3D
27
Bn v 3D cha c tiu chun ho. Ngun: UGS - NX Mach Series Design Solutions.
PGS. TS. Nguyn Hu Lc
d. To bn v lp 3D t m hnh 3D
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PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
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).
PGS. TS. Nguyn Hu Lc
Thit k b truyn bnh rng
31
PGS. TS. Nguyn Hu Lc
V b truyn bnh rng
32
PGS. TS. Nguyn Hu Lc
La chn hm bin dng cam
33
PGS. TS. Nguyn Hu Lc
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.
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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...
PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
M phng ng hc my may
38
PGS. TS. Nguyn Hu Lc
Quy ao iem tren c cau
39
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Tay gp sn phm
40
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M phng tay my
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PGS. TS. Nguyn Hu Lc
M phng ton b my hoc qu trnh
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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
PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
1. Autodesk Inventor v ANSYS Workbench
47
PGS. TS. Nguyn Hu Lc
Tn s dao ng ring
48
PGS. TS. Nguyn Hu Lc
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).
PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
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54
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Cc c cu
55
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H thng truyn ng
57
PGS. TS. Nguyn Hu Lc
H thng truyn ng
58
PGS. TS. Nguyn Hu Lc
Phn IV. V D NG DNG THIT K SN PHM C KH TRN C S M PHNG
59
PGS. TS. Nguyn Hu Lc
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
PGS. TS. Nguyn Hu Lc
61
PGS. TS. Nguyn Hu Lc
La chn phng n ( tng thit k)
62
Mt trong cc nguyn cng c chn lm phng n thit k
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PGS. TS. Nguyn Hu Lc
Thit k k thut
64
Kt qu tnh ton cc chi tit trn my tnhPGS. TS. Nguyn Hu Lc
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V pht tho nguyn cng PGS. TS. Nguyn Hu Lc
67
M hnh ha v lp rp cc chi tit
PGS. TS. Nguyn Hu Lc
68M phng lp rp v ng lc hc cc cm chi tit
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Hon thin bn v 2D v m hnh 3D
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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.
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PGS. TS. Nguyn Hu Lc
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PGS. TS. Nguyn Hu Lc
78
PGS. TS. Nguyn Hu Lc
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PGS. TS. Nguyn Hu Lc
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.
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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.
PGS. TS. Nguyn Hu Lc
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
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PGS. TS. Nguyn Hu Lc
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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PGS. TS. Nguyn Hu Lc
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
84