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快速繪製3D彈簧
" p. e, H' O: M$ Q7 N, c; J! R9 u將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！2 k7 G) E: G6 f
;;;-----------彈簧的程式---------- * v2 J, v8 H; m* {$ f% i
(defun c:spring(/) , n9 g/ v, }+ |1 o8 i5 k
(setq p1(getpoint "請指定螺旋線基點:")) ) |7 u7 P' h9 ~% X+ L% s- K3 w
(setq r(getreal "請輸入半徑:")) 6 T1 w) f5 Q; w4 d' h
(setq d0(getreal "請輸入彈簧絲直徑:")) 8 V2 }9 B7 h' j% q: C
(setq disp(getreal "請輸入節距:")) 6 l. c, M: Y7 @. g m* T, G
(setq n0(getint "請輸入圈數:"))
( Z, Z$ j. S, H2 M4 [: 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):"))
6 Z- ?$ n& ^0 w& [) o3 i(setq n1(* 1.25 n)) ;
+ _8 J, q; S6 g5 Y$ f! v(setq n1(fix n1))
# A D: @) \6 \0 j! I4 a1 [3 |(setq n2(* n0 n)) ;工作圈細化段數
- k; F7 k0 S2 H' n% q2 U(setq delta(/ (* 2.0 pi) n)) ;單位轉角 N# O4 n7 B, C9 F1 b3 k# k
(setq j(/ disp n)) ;工作圈軸向位移量 . J; j# D# t% L$ D8 P' e" J
(setq j0(/ d0 n)) ;支撐圈軸向位移量
, R! X7 M, X9 L1 m. d# _(setq bb(caddr p1)) ; t, }' a- z G% }. u# P
(setq ang 0)
6 P- Y* z& g3 p$ A" g6 J(setq jj 0) # H& g1 T6 p p8 T; V v
(command "ucs" "o" p1) % x) v/ i, v# g% Y
(setq pt1(list r 0 0))
4 J. g9 i3 R; }9 b& f' ^(command "3dpoly" pt1)
4 o# J; c4 r" y% B* ~(repeat n1 ;繪製下支撐圈
) v' j- m: R* x, C& \+ c4 L(setq jj(+ jj 1))
1 l2 f* j! t1 r+ W( z3 }' |, d(setq ang(+ delta ang))
! n* C( L p- l(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) ! |; _; q& x% P9 [0 `( T
(command pt) ( F4 \0 c( h9 P( q$ n5 H
) - p4 ~* Z# a' z6 d- N3 p
(setq p2(list 0 0 (* j0 jj)))
3 H ?. o4 Q( K3 S5 }& V(setq g1(* j0 jj)) ;下支撐圈高度
: I. L% R& ~$ K% M( }(setq jj 0)
' ~) b) ?) M/ V# E(repeat n2 ;繪製工作圈 ( c* b% B4 A9 ]/ g* V0 G8 C
(setq jj(+ jj 1))
- V! [( b; _) G+ q(setq ang(+ delta ang)) ( r4 ]! L# v( H9 |
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj))))
$ Y) p2 t! x0 P# f; B(command pt) - ]/ D* {& Y# E. D0 U
) - p$ n+ b/ |; P
(setq p3(list 0 0 (* j jj))) 5 a6 Q j* ] ^2 x' k
(setq g2(* j jj)) ;
/ l! v5 S6 s$ m0 [, R' X" V(setq jj 0) % ?4 S0 m9 o% L* n
(repeat n1 ;
7 m m3 B, u! W) R3 y$ f(setq jj(+ jj 1)) 0 u. ]& `# y' \6 z [
(setq ang(+ delta ang))
7 y6 |" w: G$ Z+ v3 E(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj))))
* q! T6 s" B6 F, s( g( k(command pt) 5 i5 [- s4 p8 X7 E# m. o6 o+ U
)
9 f4 I3 C7 V% \! c( }2 K3 M9 e(setq g3(* j0 jj)) ;
4 g9 z( \& }4 a* @$ T) ~' t) W(command "")
( C" a: h+ n* Y% Z9 v! G' Y- x(setq e1(entlast)) 9 e& y. Y$ Y( a- Y& V6 e7 S- {
(command "ucs" "x" "") ;
3 {0 K) H+ A9 d! r9 c1 P(command "circle" pt1 (/ d0 2)) * p# `) b; ^% c/ g
(setq e2(entlast))
, {3 A' @0 L& a6 g(command "extrude" e2 "" "p" e1)
! F/ e) e1 T y, o0 A5 b7 z( A1 D(setq e3(entlast))
8 U" @6 _. P. D! ~. q* N' h M& }0 k(setq pt2(list r (/ d0 4) 0)) ; * f* Y0 v$ w: t7 Z5 y# R/ |% C
(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) & I( o- D1 d5 _6 k* Z4 ~
(setq pt3(list (- 0 r) py 0)) 0 e- W. x$ I, ^
(command "slice" e3 "" "zx" pt2 pt3) / f! K, X" u' r x! A4 L5 F
(command "slice" e3 "" "zx" pt3 pt2) 6 [! y [& m. z& L3 }# r7 Q
(command "ucs" "w") / [" X# ~6 O2 W" Q7 w q$ ^8 p
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)
& n7 U @7 F+ _4 R;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！