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快速繪製3D彈簧0 _1 z! o- q; E9 v
將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！! m; o. e" x7 d2 _$ |" A+ W
;;;-----------彈簧的程式---------- 8 m2 R* \) A; }+ ?/ D8 k$ W
(defun c:spring(/)
* V1 s5 R8 P( ]; \0 W% C4 @- a* d(setq p1(getpoint "請指定螺旋線基點:"))
% Y+ c8 z- v: Z+ E(setq r(getreal "請輸入半徑:")) 6 I7 `- |$ z$ V9 y
(setq d0(getreal "請輸入彈簧絲直徑:"))
! B% e, D* C7 B- K: @( J(setq disp(getreal "請輸入節距:")) / d0 i- o+ `5 _" ?
(setq n0(getint "請輸入圈數:"))
7 v- }' U9 s/ S0 C2 Z4 w$ u% ?(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):"))
9 r3 L) \5 y+ } C1 y7 A ^(setq n1(* 1.25 n)) ; ; y: B: Q1 c+ O: ^. T: q
(setq n1(fix n1))
% U+ e! ` q3 }, r2 [0 g(setq n2(* n0 n)) ;工作圈細化段數
( `( C: R( T5 ` A7 u' _ C: I(setq delta(/ (* 2.0 pi) n)) ;單位轉角 ! X; B0 d h/ F9 L( y" v
(setq j(/ disp n)) ;工作圈軸向位移量 : k; \) I, f7 `
(setq j0(/ d0 n)) ;支撐圈軸向位移量 3 J1 m! V7 j3 @* w: V1 j
(setq bb(caddr p1)) # f+ g% T. J# F; X; H, E7 V0 m. @
(setq ang 0) 0 ?2 e! F( x9 R& ~( N1 e+ K F+ y
(setq jj 0)
% a7 x; _" E I; [' s( v1 a( a" |(command "ucs" "o" p1)
3 C9 i& z7 X V# j: U: `(setq pt1(list r 0 0))
( B2 _; | F. g4 s% o; v(command "3dpoly" pt1)
* |2 T' P$ M3 l/ F/ }! X(repeat n1 ;繪製下支撐圈 ( B* f: H* C. Z+ Q0 S. U
(setq jj(+ jj 1))
. a, A; l6 s) ^1 T; E$ E% q(setq ang(+ delta ang)) ( ] b5 s8 H/ d& r' b
(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj)))
( ?9 Y, E) r5 x9 v) f% n(command pt)
( J# r/ ?* v$ |7 F' M: {) & w! Z8 q8 D3 w$ }: K, O. B$ C
(setq p2(list 0 0 (* j0 jj))) 6 O$ ? a1 @1 r/ a. M; d
(setq g1(* j0 jj)) ;下支撐圈高度 , ]; F' R" `8 g4 i% ^, b
(setq jj 0) ; q5 Z/ m- }( o( S7 {- s( ]4 I6 o1 c
(repeat n2 ;繪製工作圈 - P7 N; g0 T: u; i4 Z9 j
(setq jj(+ jj 1))
) x' I9 ?- ]7 f4 ~( q; x+ K c O(setq ang(+ delta ang)) & n, y8 v% R- a5 H8 g
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj))))
7 |& F8 t* ~% p, T6 u7 e3 w7 @(command pt) B9 }; m) g. [2 @; j4 v! n
) " k$ R. |7 a, v
(setq p3(list 0 0 (* j jj)))
4 f, ~# K# f$ z& }) o7 _ i(setq g2(* j jj)) ;1 J) q2 ^" `/ ]( e
(setq jj 0) & R' @ ?1 J6 Q. Y/ l0 W+ l/ q
(repeat n1 ;
7 t, y! A/ H! l. _6 t(setq jj(+ jj 1))
& n# u" I3 K6 R# e9 Z, _6 v( [(setq ang(+ delta ang))
, ]# s6 ?7 c; r8 a* u(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj))))
8 F. x: n3 N* _(command pt) 9 j2 R9 R) l& G, z5 J
) 3 }7 t( P6 p( C$ P( P* ^
(setq g3(* j0 jj)) ;
* D% a: o/ j) p+ M' O) L& J$ ^(command "") ' ^- s H) x& [( Z7 Q
(setq e1(entlast)) 8 l! ~ I: d& k" k8 F* a
(command "ucs" "x" "") ;
4 Z7 c! v. F# K, V: V. T8 Y, N" d(command "circle" pt1 (/ d0 2)) $ r8 M' V0 y0 y1 J
(setq e2(entlast))
4 u# n3 W% }1 m, [- ~' \(command "extrude" e2 "" "p" e1) ! n+ f1 L' Q/ \ A! F, v( Q; U6 o
(setq e3(entlast))
" E" R: c K! B& D- P* \(setq pt2(list r (/ d0 4) 0)) ;
) u: |& e4 H; g; a; B(setq py(+ g1 g2 g3 (- 0 (/ d0 4))))
# C, J# c2 S/ W(setq pt3(list (- 0 r) py 0))
, y# f9 N! O# o0 `, e/ R$ {5 V(command "slice" e3 "" "zx" pt2 pt3)
! W( {! ]' X& d(command "slice" e3 "" "zx" pt3 pt2) ) o! _ \+ [) F
(command "ucs" "w")
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2 m: c3 C/ k- r)
# h, s8 d$ X* U; \/ R! ?5 E1 Z/ B;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！