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快速繪製3D彈簧
5 g4 C, G2 v& C% v& E: n9 U將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！- \ b) D7 o' G9 \' ~
;;;-----------彈簧的程式---------- ) R) c9 x$ E, s% ]% A. x. I$ G
(defun c:spring(/) 4 m, t% ]& e& F5 Y8 S/ t
(setq p1(getpoint "請指定螺旋線基點:")) * W' T. |8 O2 V0 H* a; L% _1 ~3 R4 F6 O
(setq r(getreal "請輸入半徑:")) . g7 X0 Y% q; A7 k8 y) w
(setq d0(getreal "請輸入彈簧絲直徑:")) ' v1 i" A/ Q0 }# [) G. e) b) e
(setq disp(getreal "請輸入節距:"))
$ i& [8 G. ]7 U(setq n0(getint "請輸入圈數:"))
! [1 ?3 B4 y' `# B A(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):"))
, C/ c( I/ w1 f6 Q$ c4 O1 m2 @2 `(setq n1(* 1.25 n)) ;
1 N, E7 F X- L+ |1 c1 F& T/ \(setq n1(fix n1)) , p5 k4 R1 E# u) |/ M' d4 m
(setq n2(* n0 n)) ;工作圈細化段數
& _6 F+ Q! n7 }(setq delta(/ (* 2.0 pi) n)) ;單位轉角 & i" ~% x& y! r
(setq j(/ disp n)) ;工作圈軸向位移量 ( W2 l5 t) `7 G0 D0 x
(setq j0(/ d0 n)) ;支撐圈軸向位移量
4 F4 g* H& w: y. I4 h6 v% Y(setq bb(caddr p1)) W" b+ a4 E9 V6 L
(setq ang 0)
/ ]: |, G" G9 I$ ]; V(setq jj 0)
! N$ p" R/ e5 g0 r' y4 e(command "ucs" "o" p1)
0 t: _- x$ f, F) M6 j0 d% o M(setq pt1(list r 0 0))
( D/ D" B9 J+ \6 f# m, N5 l# b$ a) Q. w(command "3dpoly" pt1) : V! c9 n9 F: L! S2 L+ i- q7 A; Q
(repeat n1 ;繪製下支撐圈 - n, t2 s* O! G0 ~8 ]: {' T
(setq jj(+ jj 1)) 2 t' e) s8 r5 g( K: y e8 A
(setq ang(+ delta ang))
+ N' ^, b4 ^8 y9 e% n9 n5 }(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) " B6 v) e' [5 L; S: W
(command pt) & K5 F9 \) y/ W# B4 E5 Y
)
4 S4 w" A9 c! W9 h% u/ w I(setq p2(list 0 0 (* j0 jj))) ) P2 k1 Z- _, z5 f
(setq g1(* j0 jj)) ;下支撐圈高度 : v( s5 N" u( c) u+ V
(setq jj 0) - h* x* `0 O+ T4 M, ^
(repeat n2 ;繪製工作圈 % k ~6 J& @( r9 x$ D' A+ U! E6 u
(setq jj(+ jj 1)) , {7 H! j9 Q, l6 A
(setq ang(+ delta ang))
1 E( T% y; e! B" u% E(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj)))) 5 S4 Q2 P2 I( k7 D# o
(command pt)
9 E1 ^/ H& n1 [9 P6 P) J) 5 B9 |# B# k" L( ^" p8 G% M. U
(setq p3(list 0 0 (* j jj)))
; J; j3 U0 C4 \. _% n# x(setq g2(* j jj)) ;
1 P$ k2 T' N- R% S7 E; @5 q(setq jj 0)
& r9 M; m/ f; J. v) T/ `(repeat n1 ; . Y \. z1 k* o, [ q) t1 F4 T
(setq jj(+ jj 1))
4 Q6 f* V2 E L) R(setq ang(+ delta ang)) 6 w' t" T9 a0 x% J
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj)))) 0 n, Y: T, o* P4 |5 F- h/ }. F
(command pt)
# N7 I3 V, ~/ \5 W( R. H)
- c; x4 m5 `7 j9 `(setq g3(* j0 jj)) ;% O6 P$ c) \' {/ V# Z1 y' T: |
(command "")
$ Y# g, N# x/ B; R% }& h(setq e1(entlast)) . b) I2 _) l$ S5 m7 \/ g3 _% u9 I
(command "ucs" "x" "") ; 8 ?* @5 y+ v. X7 A
(command "circle" pt1 (/ d0 2))
0 ]$ h- b) U2 R# q ?2 Q6 `! R/ }(setq e2(entlast)) : P6 }2 P% f4 w
(command "extrude" e2 "" "p" e1)
- w4 v6 B! ~, R0 ]) Z(setq e3(entlast)) 5 \ ]0 K: P6 R+ {& J2 O- j2 s9 L4 e% Q
(setq pt2(list r (/ d0 4) 0)) ;
2 B8 h/ m, x- b6 F( l(setq py(+ g1 g2 g3 (- 0 (/ d0 4))))
3 W* B% p v2 r) m* }/ @9 I/ x(setq pt3(list (- 0 r) py 0)) 5 {# m6 e7 w" y4 x4 ?
(command "slice" e3 "" "zx" pt2 pt3) 6 O# F4 c M: N% K: r4 s
(command "slice" e3 "" "zx" pt3 pt2)
6 t4 k+ U, s) g. c# T; m) V9 P(command "ucs" "w") 1 p1 R7 l' V& t
" e! j2 g% J( M! y9 a
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, G5 r7 d2 p1 \; Q% i7 H( ?;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！