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快速繪製3D彈簧
1 |- J9 u/ x9 u+ `* e將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！9 _) p2 Q) y" F8 p4 U' O. E' I q
;;;-----------彈簧的程式---------- 2 o+ W& S: W2 H, W
(defun c:spring(/)
4 R& J1 k+ a) d4 u4 g: F+ l(setq p1(getpoint "請指定螺旋線基點:"))
6 K3 |! U; c4 S% V- G0 X1 e0 y1 t(setq r(getreal "請輸入半徑:"))
$ b0 e8 A! h* a V$ {(setq d0(getreal "請輸入彈簧絲直徑:")) " `6 }. r5 q4 ]2 k( z" b
(setq disp(getreal "請輸入節距:"))
) T' u- w% Q" W6 I# f(setq n0(getint "請輸入圈數:")) 6 l5 [& g2 R7 F; r1 V$ l
(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):")) " @! A, [ ?6 }# p$ B$ P+ @
(setq n1(* 1.25 n)) ; 4 B1 d* {5 k" ~+ e
(setq n1(fix n1)) 0 x3 e3 B" [. ]" m, U
(setq n2(* n0 n)) ;工作圈細化段數 ~( g3 ?- o' w7 P5 |- W
(setq delta(/ (* 2.0 pi) n)) ;單位轉角
* A- g1 }. q8 L0 z* C(setq j(/ disp n)) ;工作圈軸向位移量
, ~/ d) M1 G# E) D9 t6 Q) T(setq j0(/ d0 n)) ;支撐圈軸向位移量 ) x9 i0 \0 m$ D8 u
(setq bb(caddr p1))
, t _7 G3 k. F4 b: K) {(setq ang 0)
& L) V5 K& F* p* m(setq jj 0)
3 s5 |' Q) ~7 V" Y: E+ b5 p7 R(command "ucs" "o" p1) 1 b/ r0 Y+ M4 b8 s) X- W: t
(setq pt1(list r 0 0)) , s' i: w6 {- A$ B0 a+ u
(command "3dpoly" pt1)
1 ~/ R4 r, E9 W' I2 g9 I3 u(repeat n1 ;繪製下支撐圈 9 t/ @# o& J1 ~0 g8 N$ f
(setq jj(+ jj 1))
9 i* |' B' S0 p9 ]/ r(setq ang(+ delta ang)) 7 V7 L5 C/ e e4 p) f/ ^
(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) 1 r2 R; _" |/ G9 l H2 o, l
(command pt) 2 g ~" |- L1 ^& O6 |6 x8 X' R
)
$ j% }* F9 g7 J3 E3 r(setq p2(list 0 0 (* j0 jj))) + p; ^" J0 l+ D- L0 b+ @
(setq g1(* j0 jj)) ;下支撐圈高度
4 |% }2 K- }1 B4 Q( {(setq jj 0) - |# k, H! M U+ ^$ O5 v; m# x. _
(repeat n2 ;繪製工作圈
3 T# Y. ?, _5 o! @6 \4 {- L* \(setq jj(+ jj 1)) * D2 U" G- g3 E/ ]$ Z
(setq ang(+ delta ang))
9 i+ g, h3 n* B5 @* W(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj)))) 7 L" {: s) ? f# t
(command pt) : m3 X' w: N# q( ~0 Z2 ~( q1 b
)
. V& j- y! f+ R2 V% J2 A- e(setq p3(list 0 0 (* j jj))) / r/ u; D0 h( F+ x
(setq g2(* j jj)) ;
( ]5 \( t2 Y" y! u! H& l7 U(setq jj 0) ; T7 k/ d5 O! Z, p5 ?
(repeat n1 ; 8 h/ ]5 f3 W4 @( `" v4 Y* {+ x! I
(setq jj(+ jj 1))
9 _" y, s! C f( J(setq ang(+ delta ang))
2 `/ S6 l( @2 l7 {1 j+ N$ q( T(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj))))
& d- k- @* i4 E6 V {3 k(command pt)
7 p8 R4 i0 i1 ]9 `% D6 l) / V4 l* R6 T# u7 Q5 T
(setq g3(* j0 jj)) ;
7 b1 D( D4 }' |' u8 k" n% v$ r(command "") / I0 W3 f0 u; G* d9 w7 F. W& v( T
(setq e1(entlast)) ( j! a: ^" w; w) s
(command "ucs" "x" "") ; 9 F5 w/ g. ~" Z# {
(command "circle" pt1 (/ d0 2)) - y, {6 ~ C5 I# I0 a# ?: J" }9 g
(setq e2(entlast))
1 F8 w1 |& Z( m(command "extrude" e2 "" "p" e1)
7 e$ i& S; v! k/ T' @(setq e3(entlast))
- F& N2 g2 U3 [(setq pt2(list r (/ d0 4) 0)) ; ' i, X8 x( \ U! g$ s6 B0 m4 ~. w: D
(setq py(+ g1 g2 g3 (- 0 (/ d0 4))))
/ L& G0 S8 V$ t7 ~. k. X& c* j(setq pt3(list (- 0 r) py 0)) ( y# r' t; l3 e5 b
(command "slice" e3 "" "zx" pt2 pt3)
7 F* q7 c- B; h* B: D+ K5 o% ^(command "slice" e3 "" "zx" pt3 pt2) ' C, u5 {% b& O5 S4 l, G
(command "ucs" "w") ' z3 v+ b8 ]6 b' ^6 v
" [" C7 k: L, F( X1 u" ]
)
Z2 S& F8 a) P;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！