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快速繪製3D彈簧
/ R0 t/ _$ T2 F( b7 j: q5 F將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！3 ~+ M# `* t$ X/ {4 G
;;;-----------彈簧的程式----------
! o( M" ~! s# J! `; i(defun c:spring(/) , ~) A @; S9 t0 i) T+ f( L" f
(setq p1(getpoint "請指定螺旋線基點:"))
# C! F0 M' `- m) z5 M(setq r(getreal "請輸入半徑:")) * a) |: M2 g3 g: M
(setq d0(getreal "請輸入彈簧絲直徑:"))
# I9 }) _' I$ _+ V(setq disp(getreal "請輸入節距:"))
# V. e7 Z9 Z, L(setq n0(getint "請輸入圈數:"))
+ t4 N5 M5 j5 G) Z1 s8 O8 d, O5 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 K W4 ]5 S- O2 U(setq n1(* 1.25 n)) ; A' k; t& X7 q/ W) ?6 r6 W" j
(setq n1(fix n1)) # }- d" Z) K9 G9 y9 J0 z$ G
(setq n2(* n0 n)) ;工作圈細化段數
5 V0 _% m2 L. J(setq delta(/ (* 2.0 pi) n)) ;單位轉角
3 ~! J: D! K6 {1 U: N$ {5 B(setq j(/ disp n)) ;工作圈軸向位移量
/ K/ n# J# k( ?9 n/ N) d* T3 s(setq j0(/ d0 n)) ;支撐圈軸向位移量
& }2 z4 [0 s% j9 W; |0 H& B(setq bb(caddr p1))
) a8 B) c# l* m% V( L2 [8 i(setq ang 0) . x: T ?# k3 U& o {4 k7 C
(setq jj 0) ! y0 X2 c6 p3 E3 J9 d; l
(command "ucs" "o" p1)
9 N2 y E# t5 I) q. L& D(setq pt1(list r 0 0))
/ I8 C4 a% M' n1 X(command "3dpoly" pt1)
2 u; R/ Z* q) L+ z5 |9 O% P5 O. Q(repeat n1 ;繪製下支撐圈 / `9 j C s( ^, K g$ N5 L# E
(setq jj(+ jj 1))
+ d; D$ k+ n; r8 Z* u(setq ang(+ delta ang))
, Y2 b4 k. }. i2 h4 j6 g(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj)))
6 Z; t; J* q W9 y/ b3 {(command pt) $ t2 k9 y5 B% o6 K/ S+ C7 _
)
' S. z# B, k. b$ {) [# I, B(setq p2(list 0 0 (* j0 jj)))
1 Q5 _ G: f# v+ I- F(setq g1(* j0 jj)) ;下支撐圈高度
4 p1 p+ N S- W4 [2 y(setq jj 0) 3 l# P: |& l+ a7 E4 B% J
(repeat n2 ;繪製工作圈 J- y6 V5 e1 p8 \
(setq jj(+ jj 1)) & V. q( d/ r9 ]# ^7 R& G# K* d( i
(setq ang(+ delta ang)) l3 r; R0 x! n8 h. v
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj)))) 7 |* m. e* |5 N7 @6 w2 |
(command pt) % X7 L0 R u$ }0 O% I
) ' o; t& P6 x, \" j- x
(setq p3(list 0 0 (* j jj)))
1 \6 x. g$ b2 l. k; K(setq g2(* j jj)) ;& v5 l. g: S. R) z3 V
(setq jj 0) * w$ ^9 Y3 i: p7 u* z% ]
(repeat n1 ;
4 }0 s4 w; l# K# M) H- W& I(setq jj(+ jj 1)) : F Z! e; S/ P8 R5 p. C3 p
(setq ang(+ delta ang))
" ?( D% ]4 a! C3 _8 n. t: n(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj)))) 3 k* E7 \2 `; D
(command pt) , m' f d; M8 r
)
' s, ?- P! v$ _- y$ c(setq g3(* j0 jj)) ;
6 g+ O- K) G1 |' `* E9 l(command "")
5 G: i [0 N3 U3 G; D- O& g4 }(setq e1(entlast)) ' h/ G& H# k& v( G. Z1 B1 g
(command "ucs" "x" "") ; 3 @4 _* k$ _% K K
(command "circle" pt1 (/ d0 2))
G& b9 E' A" O; s' B+ ?6 b" P(setq e2(entlast))
4 ?5 g; |: Y1 b$ t4 A/ T2 [$ [(command "extrude" e2 "" "p" e1) 1 J( e' O+ X9 T, i
(setq e3(entlast))
9 z- W. K& e+ h+ h8 e; y) Y" q(setq pt2(list r (/ d0 4) 0)) ;
) r$ ?, g7 d+ l, l) _( v4 _7 {(setq py(+ g1 g2 g3 (- 0 (/ d0 4))))
- K0 W$ K2 C: y. O(setq pt3(list (- 0 r) py 0)) 8 u9 ]! { H. L1 m
(command "slice" e3 "" "zx" pt2 pt3) ! M }& [. ^9 d R4 m8 ?
(command "slice" e3 "" "zx" pt3 pt2)
* H g) r' z/ m _+ P0 j# o" x9 Z7 L(command "ucs" "w") 2 `2 V, [ _6 ]7 m- N: @+ c( X) f3 S& T
# c" V4 D7 m8 c4 Y! `& l- \
) 7 S$ ~) A8 M, S; o" a6 [1 ^( b0 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！！！！