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快速繪製3D彈簧: ~1 j/ n3 T Z" Z
將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！2 Z2 w, P( w( X
;;;-----------彈簧的程式---------- ! s# U" \3 i* t" I( x1 Y
(defun c:spring(/)
+ g) E C! H2 U8 n; Q(setq p1(getpoint "請指定螺旋線基點:"))
* K4 K# r3 R. T7 q; K+ p/ O" J" i(setq r(getreal "請輸入半徑:")) : r. b, y$ y9 m5 J; v
(setq d0(getreal "請輸入彈簧絲直徑:"))
2 w) V7 r ^' A# Y( k0 D(setq disp(getreal "請輸入節距:")) % j! U- }- ]8 y4 v/ T: e7 J5 q$ B
(setq n0(getint "請輸入圈數:"))
3 d% {! f: M2 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):"))
( S( p9 L2 A. R- B# u$ G(setq n1(* 1.25 n)) ; ! N: k9 V. r- b& {0 k4 a
(setq n1(fix n1)) + b& V+ D5 ]5 l/ p. v
(setq n2(* n0 n)) ;工作圈細化段數 ' y& H6 ~: K7 T; z
(setq delta(/ (* 2.0 pi) n)) ;單位轉角
& N1 T; N% t) r: h R# G(setq j(/ disp n)) ;工作圈軸向位移量 ( W) D+ x: M8 ?4 W9 `& M% K
(setq j0(/ d0 n)) ;支撐圈軸向位移量 5 S, t6 n6 z7 ]# E! j
(setq bb(caddr p1)) , z4 ]' F4 \& x8 [7 C* l, C: v4 m# _$ F
(setq ang 0)
$ M# h, G" {" R* ?(setq jj 0) 8 q# R' e, A' c2 S# Y, u, U9 ?
(command "ucs" "o" p1)
' L+ Z0 r- C1 c+ D7 C' W(setq pt1(list r 0 0)) % _+ H. {& U0 @2 j
(command "3dpoly" pt1) & X4 \( d7 ]/ t5 x, {
(repeat n1 ;繪製下支撐圈
8 i7 Y9 C: `+ z/ J5 p; T k(setq jj(+ jj 1)) 5 h+ l) a5 w' A8 t
(setq ang(+ delta ang))
6 c, s8 c" u' T2 n% ^, S(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) 4 `" @- y; T: Y
(command pt) : l/ z5 s/ B% \2 @; V
) 3 G4 L& ?6 L% e$ z8 o, ~
(setq p2(list 0 0 (* j0 jj))) ( @- R8 g8 E$ n
(setq g1(* j0 jj)) ;下支撐圈高度
: Y$ P( i2 O/ ]+ v3 V(setq jj 0)
) Z' u/ e$ {7 V4 R(repeat n2 ;繪製工作圈 # [) q0 U. [7 X. \
(setq jj(+ jj 1)) 3 C8 R4 r' H6 _) n' p" `
(setq ang(+ delta ang)) & i2 o& ?' o& E0 N1 @6 T8 u/ ^
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj)))) , P6 d0 |# _" P8 @
(command pt) 4 T4 C, x) b2 `2 U: b" R
) ' s5 f6 p8 P5 a% A3 b6 U* p8 Q
(setq p3(list 0 0 (* j jj)))
; ^4 `- b0 A2 _) S. F* \) Z+ G* j(setq g2(* j jj)) ;
" `% o5 \6 T" x- m; W* }(setq jj 0) 7 _, A6 n( ~+ J0 }3 D
(repeat n1 ;
( k; f8 D, v. O(setq jj(+ jj 1)) ; n1 i: W# b. H
(setq ang(+ delta ang)) ! `0 _3 V9 @' q0 q w: o
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj)))) 7 D/ K' i3 O6 g8 S
(command pt) 9 M3 H9 ~9 T: Y0 Z7 C7 s( k
) - ^7 Y0 j7 w/ h( Z2 ?
(setq g3(* j0 jj)) ;
" V( g+ d8 Y. h. f1 N(command "") 8 Q9 |) K! n+ J1 M) c, T5 S! I
(setq e1(entlast))
# Y. b2 Z" S* y& A3 d& G5 {2 ~(command "ucs" "x" "") ;
, d) h' M, j# d7 C% D0 @(command "circle" pt1 (/ d0 2)) 9 a) G; f w; \" M' f+ [9 g
(setq e2(entlast))
' V9 G5 X& ^* @' ~(command "extrude" e2 "" "p" e1)
4 K; @3 o0 H( Z4 M% T& V# L(setq e3(entlast)) ! M% B( R& n5 K5 @6 _
(setq pt2(list r (/ d0 4) 0)) ;
! a" T \% n% S- {- [$ f(setq py(+ g1 g2 g3 (- 0 (/ d0 4))))
. U8 C, D9 d0 h6 H" a(setq pt3(list (- 0 r) py 0)) ( }! G3 X5 ]: A3 p1 Q) Q( T6 |+ S
(command "slice" e3 "" "zx" pt2 pt3)
2 P E+ G7 \( y, k(command "slice" e3 "" "zx" pt3 pt2) 4 C8 n7 N, l9 c. k' ?
(command "ucs" "w")
( d+ z: B# e1 X2 y8 }2 \: o
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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！！！！