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快速繪製3D彈簧. e" T0 c' E1 j
將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！
% X, g4 U; ~; H* W' K;;;-----------彈簧的程式----------
r& ^& k' Z3 B(defun c:spring(/)
+ {+ j5 I1 c" u) s! c5 u+ [(setq p1(getpoint "請指定螺旋線基點:"))
) {" N* V- t0 M- h5 ]' F( n(setq r(getreal "請輸入半徑:"))
; V# Q- a# |; W+ ~/ B1 G0 z5 I(setq d0(getreal "請輸入彈簧絲直徑:"))
. t5 c: O* y( _0 f- @9 J0 q3 r(setq disp(getreal "請輸入節距:"))
; ~0 a! e7 ?$ h' c+ V7 O( p8 V(setq n0(getint "請輸入圈數:"))
9 V6 J- [; a8 W5 a3 Y2 [(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):")) : L* x% C9 p5 b3 L% I4 L+ o
(setq n1(* 1.25 n)) ;
7 J& v8 K5 H2 {3 k/ h. a(setq n1(fix n1))
" P i+ D4 p9 ~% c$ f. ^(setq n2(* n0 n)) ;工作圈細化段數
& }! g& ?6 C- }(setq delta(/ (* 2.0 pi) n)) ;單位轉角
, ]8 d: M) w; w6 x(setq j(/ disp n)) ;工作圈軸向位移量
K E8 J8 \' N% t, A(setq j0(/ d0 n)) ;支撐圈軸向位移量
* Q7 p; ^! b0 Y7 f- Y' z8 x(setq bb(caddr p1))
5 Z4 f" V7 Z/ ?$ E: N% ^(setq ang 0) * V1 M# @# N$ k8 i! ?" s
(setq jj 0) . Q0 J2 x- _6 m! C) C/ J, W e
(command "ucs" "o" p1)
; k' ]. t1 S( J: j(setq pt1(list r 0 0)) 7 O- h- b7 o1 d8 ~% N8 ^
(command "3dpoly" pt1)
3 b! X! L+ g# a6 }6 `- s(repeat n1 ;繪製下支撐圈
$ A( ~2 n7 V3 W( M(setq jj(+ jj 1))
0 b% X2 |$ X. d; F, I/ Q/ @/ j2 ](setq ang(+ delta ang))
! L) X' J% a- w$ O(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj)))
9 o; x3 y" X' ~) `/ q% P(command pt)
' j' K [" d8 {; A) ' I# M- G+ s1 l+ l1 @
(setq p2(list 0 0 (* j0 jj))) $ P6 L! e/ K' p F% O. I7 {
(setq g1(* j0 jj)) ;下支撐圈高度 % F2 W. T" L$ j- _/ g
(setq jj 0) / b. Y! s3 G7 R" D* W2 v$ ^# X5 Q
(repeat n2 ;繪製工作圈
4 m& l* ?- o# G# J. B7 |(setq jj(+ jj 1)) . w+ J6 c% L* y' m3 `
(setq ang(+ delta ang))
5 M& v L, x1 T/ U1 ^; ](setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj))))
" }, ?6 k3 I \5 _) {(command pt)
9 C/ \+ A: c; Q' ?) / @1 S& T i3 f& A4 N2 ~, _( R( R
(setq p3(list 0 0 (* j jj))) 5 t2 h, f3 ?% T9 E
(setq g2(* j jj)) ;: s# Y g& e( J/ v" `1 u& E% [
(setq jj 0) 9 e. O& e; a2 j% \' w- \, |
(repeat n1 ; 4 y' V7 \: I" z5 U9 q' \& S$ ^1 G
(setq jj(+ jj 1))
$ @: }* F7 Q+ j7 A(setq ang(+ delta ang))
. @7 [2 b' g) O(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj))))
# E! \7 y8 c1 I(command pt) 0 K" M1 D/ N# X, J
) 7 w, \: j2 u+ F! A7 A
(setq g3(* j0 jj)) ;
4 ~8 ~2 `3 f/ \(command "") + h/ {/ x$ z# ~
(setq e1(entlast)) ; ?; u, L# v- M# L3 ]% _
(command "ucs" "x" "") ;
5 |, t. `5 N' B U2 ~(command "circle" pt1 (/ d0 2)) ) [6 e; R9 s8 t" e+ i9 G4 Z. @
(setq e2(entlast))
+ K/ E! C% T3 K I' F(command "extrude" e2 "" "p" e1)
- v7 z& u. l6 @% z% Q) P(setq e3(entlast)) S4 f8 U& t& `
(setq pt2(list r (/ d0 4) 0)) ; & p1 F2 R' J+ o
(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) % K) y" [/ E' E6 U$ y
(setq pt3(list (- 0 r) py 0))
( ?. Q" ?1 Q/ B(command "slice" e3 "" "zx" pt2 pt3) . e' [0 [9 N) `0 k0 M
(command "slice" e3 "" "zx" pt3 pt2) ' I8 j4 z& a! i3 a1 t
(command "ucs" "w") 1 B1 X; U# ]4 {+ X2 p# S8 m N# e
0 l, X# V+ i8 P9 r
) 9 e2 v: a0 _4 D [
;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！