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快速繪製3D彈簧! S, x/ C0 |5 j
將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！
7 A3 w9 i# B4 ^7 p+ q;;;-----------彈簧的程式---------- $ p4 i! B( _. c- p# M' D( n# Y7 h
(defun c:spring(/)
8 k2 O8 r% `- H/ r(setq p1(getpoint "請指定螺旋線基點:"))
`' ~7 c5 F' g; J! a# z(setq r(getreal "請輸入半徑:"))
7 w" a( X# ~, x) \# n(setq d0(getreal "請輸入彈簧絲直徑:"))
4 d% h; G5 O0 r8 Z- o(setq disp(getreal "請輸入節距:"))
7 N: z, U) |8 U5 L. n; E+ Z2 G(setq n0(getint "請輸入圈數:"))
# _' n* ~ n' h3 m f4 M8 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):"))
0 |- T# U) R5 T1 y \2 z, n) `+ Y$ o1 x( B' w(setq n1(* 1.25 n)) ;
9 t. z3 m. X0 U9 e(setq n1(fix n1))
( q7 z/ ^" N+ }( k(setq n2(* n0 n)) ;工作圈細化段數 $ X* q: i' K( L4 y& z h: H
(setq delta(/ (* 2.0 pi) n)) ;單位轉角
' I) R" W3 |# a+ m+ g2 A(setq j(/ disp n)) ;工作圈軸向位移量 ; M* [. ~9 h+ S/ d9 Z& N0 r
(setq j0(/ d0 n)) ;支撐圈軸向位移量
+ {2 i3 C, T3 I. Z3 k! y(setq bb(caddr p1))
! a, u7 a, M3 ?(setq ang 0) 0 I, U3 Z& j& V: f6 ~
(setq jj 0)
' S! g3 v/ m) Z" {& l7 j8 e. s(command "ucs" "o" p1) 7 ^) s( R. G+ s- b& {0 k6 Z
(setq pt1(list r 0 0)) " w( p, p* d/ `
(command "3dpoly" pt1)
+ s+ ?3 g! H0 U! w6 O# E; q(repeat n1 ;繪製下支撐圈 ( g3 }& w# Z5 q& j% B% z% t
(setq jj(+ jj 1))
5 c0 o: p" q2 t$ l- u(setq ang(+ delta ang)) % {, [" a8 a3 [; m
(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj)))
4 D4 v: ~2 x" w(command pt)
! o2 \5 ]1 S! ~- Y6 I# v)
0 o3 B8 e) S5 M3 C. i(setq p2(list 0 0 (* j0 jj))) / H4 P" @9 p8 Z1 m3 F
(setq g1(* j0 jj)) ;下支撐圈高度 ' B$ ?" j/ w# j0 B# ^
(setq jj 0) 0 U& ?0 a$ W+ H# B. [9 [
(repeat n2 ;繪製工作圈 7 s( O& `4 G4 E4 C: Q' u
(setq jj(+ jj 1))
5 b7 k8 E" W# _# m. |' k(setq ang(+ delta ang)) & |" r% [$ |- S3 S& E3 v% O& F: b
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj))))
( {; K5 ~. M, |(command pt)
/ w0 o6 ]( k# R) L8 D0 f/ a)
! `0 i; U- \7 E; [, h(setq p3(list 0 0 (* j jj))) * f; f5 p! y7 x3 Z) E% I1 U" B ]' L
(setq g2(* j jj)) ;# A0 U. e Z2 `! d( m* I
(setq jj 0)
; t" b. t8 |, A(repeat n1 ; 2 |7 n9 |" U4 \& Q
(setq jj(+ jj 1)) 8 ]& x2 c; P g
(setq ang(+ delta ang))
: ~9 X3 v t9 W; N- _) C" H+ k(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj)))) ! s) l* E; A4 I& L4 ]/ y: r
(command pt)
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(setq g3(* j0 jj)) ;0 D# ?+ E- E1 K% d
(command "") 0 n# x8 C8 \- _$ T
(setq e1(entlast)) ; A* h0 ?7 ~2 S( u
(command "ucs" "x" "") ;
3 B6 J+ z5 m, C' C! o( l6 ^& V(command "circle" pt1 (/ d0 2)) 7 I( R3 c; e3 c& W' O- q
(setq e2(entlast))
+ @# a8 K( `0 O. k$ m(command "extrude" e2 "" "p" e1) E+ F k( l. n$ n" r6 L
(setq e3(entlast))
! U& p. j2 {! H(setq pt2(list r (/ d0 4) 0)) ; 4 z1 j1 O6 y8 z
(setq py(+ g1 g2 g3 (- 0 (/ d0 4))))
* Z- S- [4 G* S$ {- W/ d/ ~(setq pt3(list (- 0 r) py 0)) 5 D( Q+ W0 s! j2 O4 m
(command "slice" e3 "" "zx" pt2 pt3) : X2 B3 O) I9 r2 v3 l0 v
(command "slice" e3 "" "zx" pt3 pt2)
- I8 X7 Y7 g- F(command "ucs" "w")
1 g8 R2 ^) z5 J
8 y/ F. A7 z6 o4 ?) E" r4 c2 a) " j7 I* Z6 V- I! O. G$ n- t0 I
;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！