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快速繪製3D彈簧% L$ { r6 R& N+ I* J
將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！& m$ w7 E K; }5 y
;;;-----------彈簧的程式---------- ! F7 A9 N0 ?, h) A* f0 L7 r
(defun c:spring(/)
" t. O- ~3 d* y& ]8 s$ d0 h(setq p1(getpoint "請指定螺旋線基點:"))
1 w# d2 Z% W4 o" |* n& a( w! z, l(setq r(getreal "請輸入半徑:"))
6 W, e# s* J7 g8 j# \. m1 e. \(setq d0(getreal "請輸入彈簧絲直徑:"))
9 `( a. D8 _5 v% G(setq disp(getreal "請輸入節距:")) 7 A& \2 v3 \- Y/ Q( k6 V! E9 O
(setq n0(getint "請輸入圈數:")) . \5 E3 w# R( E6 d, Q
(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):")) . a3 R) K9 n# n7 ?+ o
(setq n1(* 1.25 n)) ;
. u; c7 S8 o+ ^' b7 a(setq n1(fix n1)) 0 B0 }% @ G; j0 S# Q
(setq n2(* n0 n)) ;工作圈細化段數 : y/ \, l; o& \9 x
(setq delta(/ (* 2.0 pi) n)) ;單位轉角 # R2 c' P6 t7 O- n7 w
(setq j(/ disp n)) ;工作圈軸向位移量
& o9 [* Y# ~5 @7 h(setq j0(/ d0 n)) ;支撐圈軸向位移量 4 w; W$ Z, ]3 ~
(setq bb(caddr p1)) : v* V1 ?) j5 k0 K: e
(setq ang 0) b( x' H1 ~. E% k) K* `
(setq jj 0)
, a) ^* b3 }1 A/ \) g& o(command "ucs" "o" p1) 2 {- F2 [* C$ F( [- R' `* G) A
(setq pt1(list r 0 0)) + c# Z/ T2 R. h* k) Z
(command "3dpoly" pt1) 0 `( H, z' H9 A) S
(repeat n1 ;繪製下支撐圈
0 ^5 w9 m+ @ h) g6 T: _(setq jj(+ jj 1))
, y( s" H' O9 S N(setq ang(+ delta ang))
5 _) ~/ H! A* H# V# K- n7 T" Q" ?# E(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) `8 ?5 A" ]/ M7 a
(command pt) $ p; b! S2 |, @5 ^5 ?
) 8 n0 z( D4 u+ T# `- z( S- r; t
(setq p2(list 0 0 (* j0 jj))) 9 ]0 `0 s# H1 t7 ~
(setq g1(* j0 jj)) ;下支撐圈高度 ( S/ k# R1 I8 f I: K3 q1 ]' x" `
(setq jj 0)
- v ?+ ^( r9 D$ x4 t, t8 `% t(repeat n2 ;繪製工作圈
& c, f3 W2 D6 p* Z(setq jj(+ jj 1)) ' ^6 M" T( p9 _; o
(setq ang(+ delta ang)) ! N7 R- e) e8 x, K
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj)))) 3 W; K; s: k! I- |0 j
(command pt) - i+ h6 N9 c5 M" E7 x* F
)
J& ?, Z$ w3 p(setq p3(list 0 0 (* j jj)))
* f9 w; m( \3 N, U* J% @& ?(setq g2(* j jj)) ;0 `! f4 t7 O/ r! ?* q2 n/ X
(setq jj 0)
' f6 [& E, J1 T' z+ X(repeat n1 ; * Q3 l. v$ b! @, y
(setq jj(+ jj 1)) 8 @1 Z% ?7 t3 L# s& E! _; S. i8 R8 G
(setq ang(+ delta ang)) ' X2 `- Q) l* {: C
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj)))) $ `2 p& M3 `- C `/ U
(command pt) " G4 l5 C- [$ }1 Y; J
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(setq g3(* j0 jj)) ;
6 W1 g* H2 t, k7 T2 Q C(command "") * Q0 R. v. d- H& J7 j6 w3 x" g
(setq e1(entlast)) 7 ~' X% i& z% r' O8 I6 J s! Q
(command "ucs" "x" "") ;
* t3 C( g S- K(command "circle" pt1 (/ d0 2)) / s; s9 k* ^7 x2 P1 [5 Q
(setq e2(entlast)) ) S0 x+ @* k0 | h" [# T! D
(command "extrude" e2 "" "p" e1)
! B7 T5 i; @4 c% `1 ~ W4 X(setq e3(entlast)) - y q5 z. P& k m4 H
(setq pt2(list r (/ d0 4) 0)) ;
: f' O. W9 L" [# N4 s(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) z s5 [, l1 C" F( f# G" u
(setq pt3(list (- 0 r) py 0))
8 {+ y6 D& l5 _, |! C7 L(command "slice" e3 "" "zx" pt2 pt3) D3 J% s9 g* @# V; ]* H. t% u7 U
(command "slice" e3 "" "zx" pt3 pt2) ; p1 ]3 b+ f! [! f7 L
(command "ucs" "w") + Q3 D& N0 ?8 Z
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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！！！！