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快速繪製3D彈簧
4 o" M2 p5 ^% Q/ \將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！+ @& e- X; M& \( Z9 H
;;;-----------彈簧的程式---------- ( I# l v; S8 x# t' \
(defun c:spring(/) - C8 P4 F: O( Y6 _, T
(setq p1(getpoint "請指定螺旋線基點:"))
8 K$ K# M/ O3 B! e(setq r(getreal "請輸入半徑:"))
$ |4 T# x$ ?' Q: V(setq d0(getreal "請輸入彈簧絲直徑:"))
1 g# a& f! i+ \% d3 Q- q' B6 j(setq disp(getreal "請輸入節距:")) * ? i0 r8 l+ f9 n6 y# k
(setq n0(getint "請輸入圈數:"))
* c. ~5 J4 u5 T, e+ h: K# 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):")) + {5 U. }" S `2 b: n
(setq n1(* 1.25 n)) ;
0 J1 o; \8 G _1 q, \- M, t(setq n1(fix n1)) 7 u/ h& R3 H" T- y" z/ J
(setq n2(* n0 n)) ;工作圈細化段數 ( \! q& U' D+ q' p1 `
(setq delta(/ (* 2.0 pi) n)) ;單位轉角
, T- p1 N; P2 R7 d; \2 q(setq j(/ disp n)) ;工作圈軸向位移量 + S( j/ h2 k1 I5 j' p1 ?3 \9 |1 f
(setq j0(/ d0 n)) ;支撐圈軸向位移量
. {0 e* H' L+ A(setq bb(caddr p1))
1 x, P% m8 a* L8 g' Q6 z6 D(setq ang 0) 6 S# i( j/ B( C! z. v+ o5 e) D
(setq jj 0)
) _: D4 l% x; y1 _(command "ucs" "o" p1)
( w" m- r1 B5 L(setq pt1(list r 0 0))
5 h+ s% ]7 H* Q+ I(command "3dpoly" pt1) 0 L7 R0 @2 x7 ~
(repeat n1 ;繪製下支撐圈 2 B2 u% }1 y4 C; H! X. S- z2 `4 g
(setq jj(+ jj 1)) ' ^# f# t) L9 P. b8 s. T& J+ B; E
(setq ang(+ delta ang))
! o7 N3 p& }: W& K8 B(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) " z; X+ C0 _' g* n) q- R
(command pt) $ [7 ]( v. B: m, I% L$ W
)
* _: s2 q* Z! d& Z(setq p2(list 0 0 (* j0 jj))) , K0 P, u9 Y" J8 R$ s& R0 a2 @: Y
(setq g1(* j0 jj)) ;下支撐圈高度 ! }4 n/ d/ d$ ]) A% N. B B
(setq jj 0)
) Y7 A/ A# s- j; W(repeat n2 ;繪製工作圈
r5 D; a, i8 `! g(setq jj(+ jj 1))
' o) _# \5 X& x( T/ _(setq ang(+ delta ang)) $ |" X' l1 g9 _# @1 g
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj)))) " h3 v! ?* u) r" B
(command pt) , [" d( y% c6 S* q" _. n
)
. J8 D( H( }! t. b/ _(setq p3(list 0 0 (* j jj))) ) s0 d8 `, x0 \
(setq g2(* j jj)) ;
0 T. q4 ^, [6 P( ? s5 P3 K(setq jj 0)
; ]" W$ o# q$ F. P(repeat n1 ; P m% K" ?7 C2 v
(setq jj(+ jj 1)) 7 u, ^: ^1 y2 |( f! C
(setq ang(+ delta ang))
9 ?* x7 R5 j* P' E+ z(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj)))) 6 z' l2 x- ~, O1 r* s3 b* r* b
(command pt) ) J0 [1 ]9 n) x
) $ T- t8 A5 y5 i( g4 R! M! A9 w
(setq g3(* j0 jj)) ;
' Q5 ]8 H' l8 t6 N! P& p* a(command "") ( {, F) U; W+ s2 k! h7 A
(setq e1(entlast))
* o; C3 t( O0 n; o" v+ F }- R. e! {(command "ucs" "x" "") ; # p- G) C" {* r+ S
(command "circle" pt1 (/ d0 2)) : j8 k1 A% j: c+ n
(setq e2(entlast))
|3 Y/ y8 p/ l, J- O7 Y(command "extrude" e2 "" "p" e1) + r& U$ q5 F8 j) K
(setq e3(entlast)) j: N7 G- d/ b4 X l
(setq pt2(list r (/ d0 4) 0)) ;
4 K' w% ~8 }/ E7 B(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) 9 R: a4 a& ]$ C, |2 m9 p
(setq pt3(list (- 0 r) py 0))
1 i6 M }" [5 N1 J5 W1 _+ E(command "slice" e3 "" "zx" pt2 pt3) 1 T ?/ F' P W5 N* _6 y' j
(command "slice" e3 "" "zx" pt3 pt2) + W l; x, j" d2 |
(command "ucs" "w")
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) # e( `# h1 _; G/ n0 n3 L
;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！