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3#
樓主 |
發表于 2006-5-23 18:03:33
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只看該作者
Re: 請教怎么用autocad 畫漸開線!
8 j9 S- w+ Q* r2 [3 m(defun C:jkx ()
. O5 o6 A P& N- C6 o4 e6 t(setq pi1 (/ pi 180))
' E/ } {( B+ {(setq po0 (getpoint " \n 請輸入中心點:")). T! \5 ~9 M% ]0 w- k
(if (= po0 nil)
) B6 }7 N# W/ ]" C' d(setq po0 (list 0 0 0))2 A5 L" g+ V+ O% F6 ]
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(SETQ d (GETREAL "\n 請輸入分度圓直徑:"))
( w! w* o3 U0 O% k) _(if (= d nil), P4 ]+ e9 I0 j6 U( {2 Y5 i
(setq d 100)
# E5 k! w% R. O/ T)& W% g W' W3 D- V" ? n2 P
(setq step (getreal "\n 漸開線精細度(0<精細度<=10):"))
9 b$ j7 i7 W) d. {0 t8 n! t(if (= step nil)
1 _3 H j* ~* X, d(setq step 1)
) c+ W5 ?( z% N% }, P0 _- z)" e6 f; w1 y/ W9 e" O
(setq rd (/ d 2))
+ M& |1 W4 ?9 C8 P3 l(setq os (getver "osmode"))
$ n4 L5 K4 s+ C1 Q* N& V% p6 d(setvar "osmode" 0)
+ R* W+ | p" A# V$ l, ]6 r(command "UCS" "OR" po0)1 n# l7 g# w& C
(command "CIRCLE" "0,0" rd)
( |2 `6 p. \8 ~, M! q% \3 I7 z6 W(SETQ R (* rd (COS (* PI1 20)))) ;標準齒輪分度圓的壓力角為20度
w) t9 Q6 f, h# F(SETQ ST 0)4 i d8 _' w; W' \6 s$ G
(SETQ STR (* PI1 ST))( e9 ]9 D! H+ m! d3 Y v
(SETQ X (* R (+ (COS STR) (* STR (SIN STR)))))
. O3 V1 [* y- g( F(SETQ Y (* R (- (SIN STR) (* STR (COS STR)))))
% m2 D0 L3 I3 F(SETQ XY (LIST X Y))3 S, q- t, C( k: z* _" ]' p
(COMMAND "PLINE" XY)
* D$ E5 o, h- j( g(SETQ ST (+ st step))' T9 n" J& j2 C# u; K2 Y
(WHILE (<= ST 80) ;齒輪上的漸開線壓力角不會超過80度
7 b+ z% U3 f3 F5 n9 z' D: S(SETQ STR (* PI1 ST))1 e. F0 [) J" ?! M& ^+ D: Z4 M& i
(SETQ X (* R (+ (COS STR) (* STR (SIN STR)))))1 R H1 K* j) x5 g
(SETQ Y (* R (- (SIN STR) (* STR (COS STR)))))& a, `# k7 u5 l' n: D- R: Z X- i
(SETQ XY (LIST X Y))9 E* Q( d, v9 \1 @. e, [
(COMMAND XY)
% m; w& _4 _6 `& ](SETQ ST (+ st step))
# S4 E; n+ o( r% l" r, p)
1 {- s" X( [1 H& _ ~(command "")+ Y! {% Z, m# ?6 Y P
(setvar "osmode" os)6 ^9 r. J6 C3 Z ~
(command "UCS" "P")
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有人用autolisp寫的,不知道怎么用,能給點提示嗎? |
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