Download - 第 4 章 计算机辅助 设计 (2)
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4 (2) Computer Aided Design ( CAD )
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4.3.4
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1. m 4-12
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n y(x) 4-124-10 m >> n
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D i 4-11
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4-124-13
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4-13
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(n +1) (n +1) y(x) y(x) n (4-10)
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4-4 4-c 7 4-c
1234567Xi-3-2-10123Yi4230-1-2-5
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m7n2 (4-12)j0j1j2
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XiYi
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2. (1)
(2)
(3)4-144-154-16 m i12m lg y = lga + b lg x2-172-192-18
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(2-19)
v b lg a v a 2-20
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4.3.5CAD
(1) (2)CAD
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CAD
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4-f
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4.4
CADCADCAD
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4.4.1 CADCAD
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1. 4-g 4-b(DBMS)
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12 34
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2.
dBASE FOXBASE FOXPRO ORACLE
CADCAD(EDBMS)
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4.4.2 l. Excel
Excel
AccessFoxProSQL Server
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2. Access(1)
(2) wordExcel
(3)
(4) OBDC Access Access Microsoft Office Windows
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Access
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4.4.3 CAD/CAM(EDBMS)
CAD/CAM
EDBMS
EDBMS
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4
(1)
(2) 1.
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(3)
(4) --
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2. EDBMS
EDBMS
(1) EDBMS
(2)
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(4) -EDBMS(3)
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3. (EDBMS)
(1)
(2) DBMSDBMSCADEDBMS
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(3) CAD DBMS
CAD EDBMS
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4.5 CAD
CAD
(1) CAD (2) CAD(3)
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4.5.1 (1)
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4-h 4-h(a)D1, D2, D3, L1L24-h(b)(a) (b)
4-h
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(2)
Auto CADPICAD
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4.5.2
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1. 4-14 4-14
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2.
4-14(c)
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3.
0, 01.0,1.04-14(b)
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4-154-15(a) (b) (c)
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4-14S l S w X nY n X sY s
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4.5.3
(x, y) (x, y, z)
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1. n1 n
P(x, y) P(kxkyk) k n
[x, y, 1]4-15 P(x, y) [x, y, 1]33 A
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P P* A
P* Aabde cf
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2.
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(1)
Tx x Ty y 4-164-16
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(2) S x x S y y S xS y 1 S xS y14-17S xS y2 4-17
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(3) 4-18
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(4) 4-19 xy o
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x
x y
y o
o x y y x xy
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(5)
x y 4-20 4-20
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(1) x y x SH x (2) y x y SH y
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3.
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1 T 4-16
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2 4-17 3 4-18
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4(1)
(2)
(3) T 4-21
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4-19
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54-22
(1)
(2)
(3) T
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64-23 x y C/A C/B x
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(1) x C/A(2) x (3) x (4) x (5) x C/A
T
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4.5.4 20 60CADCAD
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CAD
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1. W1reframe Model
4-i 8V1V2V8124-i
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4-e(b) (c)
(ei)123456789101112122334415667788515263748
(V)Xyz12345678001101111011000100110010
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2. Surface Model4-j
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4-j
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(b) (c) (d) 4-f (b) (c) (d) 4-f
(V)Xyz12345678001101111011000100110010
(ei)123456789101112122334415667788515263748
(Fi)1234561 2 3 45 6 7 81 10 5 92 11 6 103 12 7 114 9 8 12
(V)Xyz12345678001101111011000100110010
(ei)123456789101112122334415667788515263748
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3. Solid Model
CSG B-rep
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(1) CSGConstructive Solid Geometry4-244-24
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CSG
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(2) B-repBoundary Representation Model B-rep
B-rep
4-25B-rep
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4-25(a) B-rep
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4-25(b)F-L-E-V
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B-rep
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(3) 4-26
4-26 (a) 4-26 (b) 4-26
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4. CAD/CAM
featureCAPPCAD/CAM
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4.6
(FortranCBasic)
FoxBase, dBaseFoxPro
AutoCADPICADAutoCAD FoxBasedBaseAuto CADCAD
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4.6.1
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4-k 4-k
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1 2 3
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4-l
17 4-l
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4.6.2 CADCAD
(1) (2) (3) (4) (5) (6) CAD
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4.6 CADCADCADCAD
Pro/EngineerUGI-DEASCATIASolidedge AutoCAD
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4.6.1 CAD Autolisp ADS ARX (C++) VBA Delphi JAVA
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4.6.2 CAD
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Pro/E: (Family Table) (UDF) Pro/Program J-Link Pro/Toolkit
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Thank You !