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7#
發(fā)表于 2006-5-25 15:04:08
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Re: 請(qǐng)教怎么用autocad 畫(huà)漸開(kāi)線!
三樓的程式有點(diǎn)小問(wèn)題,,應(yīng)是這樣的, v5 e( k0 o9 _
(defun C:jkx () % U, t/ j* U7 x% A6 a) }
(setq pi1 (/ pi 180)) 4 q& O& U, S. m, a' Q
(setq po0 (getpoint " \n 請(qǐng)輸入中心點(diǎn):"))
; H2 z! H; P8 R6 m(if (= po0 nil) 8 E3 k/ I g5 ~! I
(setq po0 (list 0 0 0))
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(SETQ d (GETREAL "\n 請(qǐng)輸入分度圓直徑:"))
4 C9 L% A) ?- }# p4 V(if (= d nil) % M8 I# T4 m6 [$ l
(setq d 100)
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(setq step (getreal "\n 漸開(kāi)線精細(xì)度(0<精細(xì)度<=10):")) & f/ a9 A* U% y, _! M
(if (= step nil)
* P0 T" Z4 F# q) I(setq step 1)
5 x$ N( @$ ]1 O. S- A0 z: P) - v; H# ~ `. z$ C' u, T3 p0 @) d
(setq rd (/ d 2))
" m0 ~# P( a7 s' l(setq os (getvar "osmode"))
& t3 q$ M a/ {3 Q: w" _(setvar "osmode" 0) + s! O5 A$ T+ c3 D" i
(command "UCS" "OR" po0)
& k# U2 E- P0 O. [5 G2 h$ s(command "CIRCLE" "0,0" rd) " I7 z* u. n- H
(SETQ R (* rd (COS (* PI1 20)))) ;標(biāo)準(zhǔn)齒輪分度圓的壓力角為20度
( L% ^" H3 H: m. o) @/ H: {(SETQ ST 0)
5 F8 p9 F% L- l(SETQ STR (* PI1 ST))
2 L% d n2 \; C" o0 a7 m/ S( N% ?(SETQ X (* R (+ (COS STR) (* STR (SIN STR)))))
/ w, \* h1 P5 `# Q3 x8 R(SETQ Y (* R (- (SIN STR) (* STR (COS STR))))) 5 [: F% D) I4 _/ {* |
(SETQ XY (LIST X Y))
; o8 U. j# A" G4 M' Z1 V* G' Q0 |7 c(COMMAND "PLINE" XY)
" u6 m: Q; F$ n(SETQ ST (+ st step)) 3 ], M% v `# H3 h: z
(WHILE (<= ST 80) ;齒輪上的漸開(kāi)線壓力角不會(huì)超過(guò)80度
! \& _4 V3 Z! p8 z' g(SETQ STR (* PI1 ST))
0 t% q' v- h: D$ J(SETQ X (* R (+ (COS STR) (* STR (SIN STR)))))
, {+ L# L1 V& r(SETQ Y (* R (- (SIN STR) (* STR (COS STR)))))
$ O7 T- }5 |: |; Y# O, z" \6 w(SETQ XY (LIST X Y)) 8 K: j7 d, u+ ^: |* ?0 P( d' h! u
(COMMAND "PLINE" XY)
3 v: W" u+ C/ D% H# s7 G" M(SETQ ST (+ st step)) . K& h1 P+ U0 |7 P2 ^
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(command "")
+ h7 Q& j1 F1 `5 S. V* G5 Y(setvar "osmode" os) 7 @4 ~: J3 T5 S: p4 M+ X
(command "UCS" "P") $ _. g9 w; @+ _: k, b- Q0 P
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