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快速繪製3D彈簧
) Y; V6 x1 {" m將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！5 ]- M' l2 e6 o9 ~4 t
;;;-----------彈簧的程式----------
' j( \0 Q5 i+ z- o+ x+ L2 r(defun c:spring(/)
0 X; T1 f- y4 [3 k0 j(setq p1(getpoint "請指定螺旋線基點:")) ( _5 T1 Q1 U5 n6 D
(setq r(getreal "請輸入半徑:")) ! t" o+ i* b7 V( Q+ m8 A& v
(setq d0(getreal "請輸入彈簧絲直徑:"))
& ` N/ |: o+ B7 B(setq disp(getreal "請輸入節距:")) Y, p1 q, M0 G9 I# l
(setq n0(getint "請輸入圈數:"))
6 v. y. n( c8 U( h(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):")) ' b, n" H& O% |6 k/ }3 b' K$ T5 |
(setq n1(* 1.25 n)) ; 8 P/ r4 e& W, W0 b+ b U/ d
(setq n1(fix n1))
/ U" V! X3 E8 q' H) {(setq n2(* n0 n)) ;工作圈細化段數 8 J# [, k6 T, h4 N6 n4 E
(setq delta(/ (* 2.0 pi) n)) ;單位轉角
. I0 p8 T7 O7 v: [: Z(setq j(/ disp n)) ;工作圈軸向位移量 " m- M. i" g/ C. ?" E# w
(setq j0(/ d0 n)) ;支撐圈軸向位移量
6 A( h' c R7 I, j( ^(setq bb(caddr p1))
' M( _6 L9 C" H. ~: o- I$ h(setq ang 0)
7 x$ U; Y8 _5 d$ v% ](setq jj 0) : S4 E! K6 H* [5 a ~* U6 ^) V
(command "ucs" "o" p1) . o E* P6 Z! p! a, }; ]: C
(setq pt1(list r 0 0)) / I) U8 s% {: j! c9 a
(command "3dpoly" pt1)
& \1 N$ g) H% d+ k: _(repeat n1 ;繪製下支撐圈 - A0 W; p' P, S8 o; h8 z2 W$ O
(setq jj(+ jj 1))
! f* U3 k4 ?' d* ], l(setq ang(+ delta ang))
, x/ j# q' ?; D( e! W9 L(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) 2 D& L- N0 T/ x, n" V- m9 U+ i
(command pt) ) X" a+ l- X" Q7 v `
)
1 X. l% x0 }- M2 G8 z(setq p2(list 0 0 (* j0 jj)))
8 Z3 u9 R9 v, I! J0 ](setq g1(* j0 jj)) ;下支撐圈高度
; @ Y) ^; D7 r7 r(setq jj 0) 9 |8 q$ }& g, C- Q# H) t
(repeat n2 ;繪製工作圈 % K+ H) E* Y7 ?9 p1 Q
(setq jj(+ jj 1)) * g+ ~! D" q6 y
(setq ang(+ delta ang))
$ J$ ~7 C+ _3 C9 }5 F(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj)))) & e/ s! z0 {1 ~2 w7 X/ [5 A& Y
(command pt) ! S. H% X, z2 T* _
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(setq p3(list 0 0 (* j jj))) ' r/ C& e5 ^. Z, Q1 q
(setq g2(* j jj)) ;
$ A1 V5 c/ @/ k& |. S t(setq jj 0)
" q. X `5 m/ P" F(repeat n1 ;
6 y3 s1 B4 B" s(setq jj(+ jj 1)) ; ]9 y" o% s' l) z! R0 H
(setq ang(+ delta ang)) [0 m8 B" Q i+ w
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj)))) % t6 V: t8 M. H- L# x# u# q+ G
(command pt) , \$ e& d1 j" x+ a$ F) G
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(setq g3(* j0 jj)) ;6 a$ I8 A h$ m/ W
(command "") 7 V% I1 F' |/ f
(setq e1(entlast)) 7 L7 j3 x" e2 i6 t% w. t5 W% `
(command "ucs" "x" "") ;
' w0 I- b- d4 t0 e( b(command "circle" pt1 (/ d0 2))
- b' v n" M& q% _. d$ W(setq e2(entlast)) . L# P. M: O7 p7 H
(command "extrude" e2 "" "p" e1) 7 _% F9 ]; t, ?, S# _
(setq e3(entlast))
1 {* c8 V5 S0 l8 Q3 y3 l9 q(setq pt2(list r (/ d0 4) 0)) ;
' {, N. w* l1 ^) j) ?/ L( N& O(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) 6 @- C2 B9 f3 Q$ ~$ y0 s
(setq pt3(list (- 0 r) py 0)) " C/ `, }* N) e# r1 N/ l
(command "slice" e3 "" "zx" pt2 pt3)
% h8 E4 I0 G, O& _! w(command "slice" e3 "" "zx" pt3 pt2) * V% T) ?. h& _* z
(command "ucs" "w")
) U% b7 W, Y4 I0 Q- N1 O( b( a0 a+ \4 v% g: u
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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！！！！