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Re: 請教怎么用autocad 畫漸開線!
三樓的程式有點小問題,應是這樣的
/ |1 V& H2 p: a( D) e) K(defun C:jkx () # Q0 ~# j7 g8 v' S/ J. d
(setq pi1 (/ pi 180))
: n+ P9 \" O, ?4 t/ [(setq po0 (getpoint " \n 請輸入中心點:"))
: _. h& [1 M# |; i3 U(if (= po0 nil)
' b$ F! u" d4 E5 w' n# n(setq po0 (list 0 0 0)) 0 }6 m9 u3 d1 O
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(SETQ d (GETREAL "\n 請輸入分度圓直徑:")) 2 U2 e( J @# N) ?- m
(if (= d nil) 7 j: C* ]. r' D& f Y
(setq d 100) / T! R* [# n% Y6 j. R( ]
) ( v8 N, j/ p# Q m$ O! R/ j1 X& I
(setq step (getreal "\n 漸開線精細度(0<精細度<=10):"))
: v4 i4 I) h' e; c9 U; c(if (= step nil)
+ {5 q) V$ [" Q(setq step 1) 0 |+ P9 b+ C- ~6 ]" V& [, x, S+ Y9 {5 J
) - K# {) q8 w3 [5 J. ?- C
(setq rd (/ d 2)) 2 ~$ j f8 k; f) v9 x2 X+ X
(setq os (getvar "osmode"))
' Q- K- g! W, V2 X, I5 m1 e(setvar "osmode" 0)
% f7 d- H6 }; A(command "UCS" "OR" po0)
, J# R/ {# H( J) i) D* Y(command "CIRCLE" "0,0" rd)
3 ]& C/ F7 B: F(SETQ R (* rd (COS (* PI1 20)))) ;標準齒輪分度圓的壓力角為20度 " @7 q, N9 g |& U ]. k8 a
(SETQ ST 0) : ?+ Y7 c( n+ W2 u( w$ G
(SETQ STR (* PI1 ST)) , q- r3 W4 G( J4 X7 i+ L; N1 s
(SETQ X (* R (+ (COS STR) (* STR (SIN STR))))) 1 M0 r/ S/ ^+ E: e5 \: D
(SETQ Y (* R (- (SIN STR) (* STR (COS STR)))))
0 V) L) o1 E7 X9 v) e(SETQ XY (LIST X Y))
9 T5 O" X+ F6 S8 L(COMMAND "PLINE" XY) , C" {* h3 T8 |
(SETQ ST (+ st step)) $ L& v2 F2 C- l1 p( _$ [
(WHILE (<= ST 80) ;齒輪上的漸開線壓力角不會超過80度
8 A+ R) K" k1 n. k(SETQ STR (* PI1 ST))
* E( F$ R: r8 K4 Y(SETQ X (* R (+ (COS STR) (* STR (SIN STR)))))
8 ~" c0 m7 P! o! f(SETQ Y (* R (- (SIN STR) (* STR (COS STR)))))
( e; b, H: T) R/ Y(SETQ XY (LIST X Y)) / P, C7 J; v, P. s& M4 A
(COMMAND "PLINE" XY) ) x7 K5 o* q2 a" ^# w) ?% t
(SETQ ST (+ st step)) / j2 s+ T( N r) d
) 9 A" i ^# N& B5 Z6 R3 j7 H
(command "") 7 Q+ U: r; m: m" r- o4 [- K
(setvar "osmode" os)
: n3 z" R7 I1 C+ l(command "UCS" "P") / a- c6 m; R" v; t9 J
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