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快速繪製3D彈簧
. t% u6 l& q5 U% @! M/ g# W將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！
+ S* X! i' \: s, a;;;-----------彈簧的程式---------- $ ~0 l$ }) G5 E) |; x! _
(defun c:spring(/) / m, v( n0 _/ ~% X% n+ O
(setq p1(getpoint "請指定螺旋線基點:")) 6 G& ~# t5 V5 y: v) f6 l6 o x
(setq r(getreal "請輸入半徑:")) 4 S# Y6 x0 D6 }3 Z- z3 ?- P+ |% `
(setq d0(getreal "請輸入彈簧絲直徑:")) 0 f Z4 r& d0 _# R- h
(setq disp(getreal "請輸入節距:"))
6 f5 x, k! C9 l$ u! v# P0 w(setq n0(getint "請輸入圈數:")) , d! G5 X8 i8 Z( t
(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):"))
" K- {3 F0 m5 q) B$ j. a4 b(setq n1(* 1.25 n)) ;
% z4 h! H6 Q h! u4 g(setq n1(fix n1))
R9 u Q, z% d! b(setq n2(* n0 n)) ;工作圈細化段數
3 U0 x$ w2 q" p/ C" [2 y(setq delta(/ (* 2.0 pi) n)) ;單位轉角
7 p: S# c u0 i7 k% \- U(setq j(/ disp n)) ;工作圈軸向位移量
) p. R8 @& g/ \0 c+ y(setq j0(/ d0 n)) ;支撐圈軸向位移量
; }/ y ]% t) a( L$ y! H1 ~7 ?(setq bb(caddr p1))
+ x X& u' ]0 U(setq ang 0) # E6 p- L0 w2 N+ a/ i# I9 m4 ?
(setq jj 0) & J: \( T8 ]2 l5 [# b% x
(command "ucs" "o" p1)
! q2 h% h# n. ?4 h3 `(setq pt1(list r 0 0)) ; e; c' i% y g- c! G# L
(command "3dpoly" pt1) - Z+ g3 G. w+ Q! F5 D$ ]' V- s% ?0 H0 H
(repeat n1 ;繪製下支撐圈
/ ~' @2 k/ Q3 o. J* E8 {5 X(setq jj(+ jj 1)) ' \ h. s0 a" a4 H9 d* ?7 C
(setq ang(+ delta ang))
6 V4 o5 [' O) J8 q5 @7 b3 k0 o(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) 6 D! B' Q$ a9 Y2 T# [) L, z
(command pt) 7 w; V: \3 P& m' c* u
)
8 P! f0 J* {+ p/ g(setq p2(list 0 0 (* j0 jj))) ! G9 i( T- M# P: x
(setq g1(* j0 jj)) ;下支撐圈高度 + K& T( q0 Q2 Q6 S! {6 U5 H
(setq jj 0) 9 \ x5 A2 Z8 e+ r; s( q
(repeat n2 ;繪製工作圈 & h7 w- D+ t4 l3 N4 x+ h' z
(setq jj(+ jj 1)) , S+ `7 c$ l+ l% e
(setq ang(+ delta ang))
( G: D; Y1 V$ |: N8 O(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj))))
! W* V% n5 M6 G9 T# P(command pt) & H8 ~8 Z9 j( k! @0 C8 p/ ^7 d% [+ u
)
; n- V9 S) c( O# `$ P+ [$ e4 q(setq p3(list 0 0 (* j jj))) 3 W% E6 W- R; V4 O' K
(setq g2(* j jj)) ;; m) S0 n( Y; F% y; Z. N
(setq jj 0) N, e: g6 R/ p) L9 k5 p2 K. O
(repeat n1 ;
( I) D, k: |/ ] D- ?(setq jj(+ jj 1)) 0 M4 ~3 V& b; q! a
(setq ang(+ delta ang))
2 \- P/ c* `. V! o9 i! |(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj))))
$ ?2 y+ W3 e$ p' C4 W5 G9 b0 Y(command pt)
5 U* a/ O& b; \) N) + u6 O" Y) i% e! K- j9 I Z
(setq g3(* j0 jj)) ;7 F @+ r0 F: A9 u
(command "")
5 @5 z' _' j, |2 X, I% v( G(setq e1(entlast))
, e! D$ d# d* S(command "ucs" "x" "") ;
1 N3 [% m9 j8 ?1 o5 l1 _(command "circle" pt1 (/ d0 2)) : ^, q, }, N6 A2 A+ H/ Q
(setq e2(entlast))
3 R0 Y" O( c! ~* l {0 t3 ~5 j" q+ G- m(command "extrude" e2 "" "p" e1) 8 |# g' h8 @8 I1 i/ d
(setq e3(entlast))
5 l% h8 }$ C. u$ b ^(setq pt2(list r (/ d0 4) 0)) ;
4 g& F4 Q8 L. I4 @( a(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) . \6 L5 h; E8 L- P$ K; R7 C
(setq pt3(list (- 0 r) py 0))
. d8 c/ U+ N9 w(command "slice" e3 "" "zx" pt2 pt3)
9 c8 `3 y) W6 w(command "slice" e3 "" "zx" pt3 pt2)
1 e& E A% H6 @- M0 C(command "ucs" "w") 9 V+ {( m6 D# Z% X" f X7 d8 p
; ]$ E$ a3 r+ ]+ {; a* p* Y9 W' i
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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！！！！