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7#
發(fā)表于 2006-5-25 15:04:08
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只看該作者
Re: 請(qǐng)教怎么用autocad 畫漸開線!
三樓的程式有點(diǎn)小問題,應(yīng)是這樣的
# r3 w1 H! ]+ t) o(defun C:jkx ()
3 \3 K4 I* ~4 R3 {(setq pi1 (/ pi 180)) , B% N5 o0 w( Q
(setq po0 (getpoint " \n 請(qǐng)輸入中心點(diǎn):")) / \4 U( J- Z4 q8 B# Q6 m/ u: C( z
(if (= po0 nil) 8 ^+ ~$ F' k9 T# ]3 @
(setq po0 (list 0 0 0))
2 l1 S1 k) ~6 Z: p, T/ X) l- u)
$ |7 A2 k" o. O* |, \) ](SETQ d (GETREAL "\n 請(qǐng)輸入分度圓直徑:")) ' C, E) h. h" y. B$ B% u# l
(if (= d nil)
2 E r; d. Y: T! ]; z(setq d 100)
) ?0 M# l6 p3 j)
1 _( @! P; `7 V4 S, U(setq step (getreal "\n 漸開線精細(xì)度(0<精細(xì)度<=10):"))
- T- b$ S% ?+ P; ?3 Z+ ^(if (= step nil) , i' w* O1 G% A& J. k3 e4 r8 S
(setq step 1)
" i$ r1 S3 j% e: X+ J) $ x% B6 j; _8 y( m
(setq rd (/ d 2)) 1 r L5 e; k' ?3 w$ ~
(setq os (getvar "osmode")) 6 z+ O! w" o# E* M! F8 P
(setvar "osmode" 0) ! l& C% K s" s0 a- T* B
(command "UCS" "OR" po0)
1 {4 j V8 p" {+ Z7 q# J(command "CIRCLE" "0,0" rd) ( h1 ^6 C ~" [2 q1 p
(SETQ R (* rd (COS (* PI1 20)))) ;標(biāo)準(zhǔn)齒輪分度圓的壓力角為20度 / X/ l9 g% Z- W7 i: J; R4 v
(SETQ ST 0)
# p' R' h3 Q6 l(SETQ STR (* PI1 ST)) " ^/ [( w2 O, y! b- ]8 k- D% D- I% s8 l
(SETQ X (* R (+ (COS STR) (* STR (SIN STR))))) ! x5 j7 F$ W7 ^2 U
(SETQ Y (* R (- (SIN STR) (* STR (COS STR)))))
( q; M( i8 h$ L+ L( \6 R" ~(SETQ XY (LIST X Y)) 6 ]8 b; U2 _+ k2 N
(COMMAND "PLINE" XY)
0 [: k2 S) p- G. q(SETQ ST (+ st step)) / O+ O+ F, U! R5 B
(WHILE (<= ST 80) ;齒輪上的漸開線壓力角不會(huì)超過80度
1 s, E% d2 I7 u+ u- g1 X1 j; u6 m(SETQ STR (* PI1 ST))
/ J: s$ S% A5 k/ R# q(SETQ X (* R (+ (COS STR) (* STR (SIN STR)))))
/ C% ?6 ~9 n' N' F3 U# y(SETQ Y (* R (- (SIN STR) (* STR (COS STR))))) . g3 z+ X4 e& ], v! t0 Y
(SETQ XY (LIST X Y)) ' z% H1 {2 @" [
(COMMAND "PLINE" XY)
4 m8 t w u U# R U0 M8 j8 ~(SETQ ST (+ st step))
4 l( [9 d1 w- ^7 Z% x)
$ E& V# {5 C# ]2 i" O v(command "")
, _& e" F& F& Q" j4 ~" e7 ]3 }" p9 b(setvar "osmode" os) ( R @ x G+ I! L {# h
(command "UCS" "P") 3 I) a6 K: k- G$ w- f+ b* v$ W
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