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3#
楼主 |
发表于 2006-5-23 18:03:33
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只看该作者
Re: 请教怎么用autocad 画渐开线!
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(defun C:jkx (): x( C" V( Y+ q8 C; k5 o
(setq pi1 (/ pi 180))7 z' F/ Z' {& M; s9 m8 y
(setq po0 (getpoint " \n 请输入中心点:")): `# g( c$ I/ _3 [5 W
(if (= po0 nil)* ]$ }: B; [* |" u8 e3 W$ u$ d: Q
(setq po0 (list 0 0 0))
. D2 h6 m2 G7 H3 c)
& ^+ U( {( J. u(SETQ d (GETREAL "\n 请输入分度圆直径:"))1 x2 g0 o; ?0 ?+ a7 @% P# L! Y
(if (= d nil)* j: J0 a7 r& {. n/ I
(setq d 100)
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(setq step (getreal "\n 渐开线精细度(0<精细度<=10):"))
; c% q* b, Y! B3 c1 L(if (= step nil)1 J2 Q/ u# J0 L: \) a
(setq step 1)
" V" \# f& f3 u& i4 v: F1 n)
2 b) V+ e! |1 B- Q9 Y& {(setq rd (/ d 2))" t& g+ r7 b6 n8 @' f$ W% M
(setq os (getver "osmode"))
& M8 N9 g# f0 C(setvar "osmode" 0)
1 h' Y1 U. {0 R& R4 E" [(command "UCS" "OR" po0)
9 z! A2 L# u' v4 v& E3 {( q& j+ Y8 X(command "CIRCLE" "0,0" rd)5 B6 m8 J! E8 F) _# T k2 y' y- H, u
(SETQ R (* rd (COS (* PI1 20)))) ;标准齿轮分度圆的压力角为20度8 P& P4 h- a8 Y9 w, G A/ {$ K- U
(SETQ ST 0)
" K4 q0 |% v8 k7 j# L4 Q6 E* W(SETQ STR (* PI1 ST)), ?$ S9 U) }5 w) j# ~8 m
(SETQ X (* R (+ (COS STR) (* STR (SIN STR)))))& \2 u8 w# t( V0 Z
(SETQ Y (* R (- (SIN STR) (* STR (COS STR)))))
1 C. Y! A! d/ v- e- x! H(SETQ XY (LIST X Y))4 U4 @0 n. j; @" ?- U
(COMMAND "PLINE" XY)
- G& j$ D& i' `, D3 Z) n: E2 `(SETQ ST (+ st step))
! u7 o. A! r7 e1 j& h7 K. p(WHILE (<= ST 80) ;齿轮上的渐开线压力角不会超过80度' C+ y; r1 ]+ \( O8 B7 ~) q" ~0 N
(SETQ STR (* PI1 ST)). z9 ~2 j% |- j! Q3 ]& ~& e4 Y
(SETQ X (* R (+ (COS STR) (* STR (SIN STR)))))
: R/ s* F4 C. w) l(SETQ Y (* R (- (SIN STR) (* STR (COS STR)))))
7 G$ [8 z, \1 S( S8 C$ g(SETQ XY (LIST X Y)), H4 h* j5 ~/ Y; [2 C0 `7 T& z
(COMMAND XY)+ H0 ~# ~6 U# ?
(SETQ ST (+ st step))
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6 U. J B6 {1 {0 Z( r(command "")
/ ?; {' @% P; D! D(setvar "osmode" os)6 d& A& e$ |; ~( k& [
(command "UCS" "P")1 |. ]4 ?3 A9 x; { n! l+ ?
) ' \( @* e0 b( f
有人用autolisp写的,不知道怎么用,能给点提示吗? |
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