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快速繪製3D彈簧; J, M. \6 a M1 E' K) U
將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！6 ~+ p+ z2 n2 m# }5 f% Y4 u
;;;-----------彈簧的程式---------- * G6 q. K8 n% k& f1 J. C
(defun c:spring(/)
9 ]5 `8 D+ f2 h/ u3 g" |4 f(setq p1(getpoint "請指定螺旋線基點:"))
& J4 W1 ?: g7 w; E(setq r(getreal "請輸入半徑:")) 3 j7 L, j- @2 |% U
(setq d0(getreal "請輸入彈簧絲直徑:")) ! k7 _1 I/ ]9 d
(setq disp(getreal "請輸入節距:"))
6 x/ l( `0 D" f4 D+ L( W(setq n0(getint "請輸入圈數:"))
8 n$ h5 D/ B; Y. ~* t! z(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):"))
( u' A0 g6 D7 J; b% }8 A(setq n1(* 1.25 n)) ;
' D L+ [+ d) Y" g- J/ k- f X c(setq n1(fix n1)) & \* ^* L& W# {$ T, \7 e% c& [* j0 u8 p
(setq n2(* n0 n)) ;工作圈細化段數 - r2 [* r$ |1 e4 i* S- ]
(setq delta(/ (* 2.0 pi) n)) ;單位轉角 - q8 q) W7 ]' u. H
(setq j(/ disp n)) ;工作圈軸向位移量
5 A9 Y8 F- B$ ]. R1 Q(setq j0(/ d0 n)) ;支撐圈軸向位移量
) s! ~6 B8 D! E& k8 U7 v ?(setq bb(caddr p1))
8 w6 c0 p; X* H: [8 B7 K(setq ang 0) 7 k2 A. }3 \; |7 [# N _5 E
(setq jj 0)
* d! j1 K1 {4 k% Q, S(command "ucs" "o" p1) 8 \3 i3 H ?4 A" p, l' J0 ^% e2 H
(setq pt1(list r 0 0))
- F2 @. S8 d# ]. Q; |) F(command "3dpoly" pt1)
& F% l" A u/ J(repeat n1 ;繪製下支撐圈
2 z/ p8 u! P+ k2 b7 X(setq jj(+ jj 1)) / U+ | Z3 B/ ]
(setq ang(+ delta ang))
; e& G' p3 ~- \6 Y: i/ Q(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj)))
0 ?! e' m* n0 w! G* {8 c# Q(command pt) 9 ^: e$ Y" C& ]4 a/ h! [% Z( @5 H
) ' q5 Q8 \. S R/ g
(setq p2(list 0 0 (* j0 jj)))
4 r. I/ r2 ^8 [(setq g1(* j0 jj)) ;下支撐圈高度 9 r( M" `# q% e( z
(setq jj 0) 4 V: t& S3 r/ Z5 k1 X
(repeat n2 ;繪製工作圈
6 L! b- t2 e4 r+ V4 p(setq jj(+ jj 1)) 4 `* Z7 n9 q! d* a3 @' Q' f9 P
(setq ang(+ delta ang))
/ Q. q& S* E' j(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj)))) , z" r" x; @( Q: n- y' N0 M& z
(command pt)
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(setq p3(list 0 0 (* j jj))) , [" O+ @9 |6 o+ r2 C
(setq g2(* j jj)) ;# w& C* f& ?: s* p
(setq jj 0) 3 h V, h/ j5 Z7 R1 |
(repeat n1 ; ( ?7 U# r* V0 m% U8 l2 l2 J3 J
(setq jj(+ jj 1))
4 m8 n: k, X d1 y(setq ang(+ delta ang))
% n& C, `* e$ G7 h. y, X E(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj))))
2 f7 d U3 C$ _(command pt)
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(setq g3(* j0 jj)) ;" t% [; Q# h0 s! @6 L5 q9 h
(command "") , k0 q& }1 s4 \8 _) ^1 D5 w
(setq e1(entlast)) ( a; e5 l# r$ Y2 b! g) @
(command "ucs" "x" "") ; 5 C" A m B6 E6 C4 [, u& h$ y
(command "circle" pt1 (/ d0 2))
$ m) ~+ @) ?# O( V(setq e2(entlast)) + f6 B7 ~) E3 k0 O, L
(command "extrude" e2 "" "p" e1)
" j5 J( j, [( \6 c. Y. ?(setq e3(entlast)) ) Q, M" C% R. M ]+ f, d1 F
(setq pt2(list r (/ d0 4) 0)) ; $ x. q, ~: j8 r
(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) ! x! O9 ?2 @2 ~
(setq pt3(list (- 0 r) py 0)) / Z& y5 `# K. b% N/ |( Q
(command "slice" e3 "" "zx" pt2 pt3)
7 Z9 |6 n0 o _# D b(command "slice" e3 "" "zx" pt3 pt2)
+ ?, D, J3 S- \(command "ucs" "w") % s5 u0 o- v4 ?0 i# f9 K {* ?+ r
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;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！