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快速繪製3D彈簧
! w* C+ M- ]2 G將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！0 Z4 t, O$ ~7 w0 A
;;;-----------彈簧的程式----------
" n6 q& x$ j3 D0 D(defun c:spring(/)
0 P! n$ b& N, f$ O$ u: s+ s(setq p1(getpoint "請指定螺旋線基點:"))
3 f8 y5 W" t$ [- Q S, ](setq r(getreal "請輸入半徑:"))
/ f( e; n8 A5 x- T0 l5 M5 L(setq d0(getreal "請輸入彈簧絲直徑:"))
9 J$ ~8 D5 Y+ y. s3 {( b(setq disp(getreal "請輸入節距:"))
$ i/ a% _) K6 ]0 \+ x# @(setq n0(getint "請輸入圈數:"))
1 R t1 }- I+ ]9 k(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):")) - Q- I1 v- _5 u D) o# o7 h
(setq n1(* 1.25 n)) ; 9 ]' Q0 b4 D( t i
(setq n1(fix n1))
) f9 u' I- S" ?2 D& e- k* i(setq n2(* n0 n)) ;工作圈細化段數 , K" r# U+ V! S& r
(setq delta(/ (* 2.0 pi) n)) ;單位轉角 6 }0 h2 G; [. C% e
(setq j(/ disp n)) ;工作圈軸向位移量 4 V) { s- ?+ X$ t9 U! `- S! _
(setq j0(/ d0 n)) ;支撐圈軸向位移量 2 g# g: Y' U- b2 E0 @% y* |
(setq bb(caddr p1)) & V5 [+ d+ R3 F# z
(setq ang 0)
8 j6 |; c- K# M7 N' @* o O0 t+ v(setq jj 0) , r# e; b4 P$ v8 I6 w
(command "ucs" "o" p1)
4 w4 w% j: o! i(setq pt1(list r 0 0))
& ]! X& M3 p. ^/ M Y$ n(command "3dpoly" pt1) - w# m( d- e; V, D4 T( R. ~
(repeat n1 ;繪製下支撐圈
1 y* L7 H2 {2 H8 a(setq jj(+ jj 1))
. q6 z2 w ^! O X(setq ang(+ delta ang)) 1 l% k+ @+ O+ I3 c5 K
(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj)))
% {8 C% N5 @. o(command pt)
8 ]" u, A0 ?# x& x9 D) T)
1 H+ X! K1 E ?" [5 y. r(setq p2(list 0 0 (* j0 jj)))
K& C( V* W0 B* k7 ?(setq g1(* j0 jj)) ;下支撐圈高度 , J# w& V- `- D) ^6 j4 B% K
(setq jj 0) ( x5 `( G6 e& }6 b# _
(repeat n2 ;繪製工作圈
8 P0 I. c8 V. z1 q(setq jj(+ jj 1)) : \. s; @. k$ o
(setq ang(+ delta ang)) 8 G% Y/ }8 U( D- r2 f
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj))))
8 [+ N5 N3 N' \1 D+ v(command pt) ' @9 J) I+ b; l& Q [
) 8 M$ }( j V% q% z) e3 v
(setq p3(list 0 0 (* j jj)))
Z% V% X, u5 F: M(setq g2(* j jj)) ;
# d! a7 E7 H; N% } z4 F(setq jj 0) - l' I$ J& c8 g! [$ t5 a7 k' w
(repeat n1 ; " F m# C3 S/ U s% u
(setq jj(+ jj 1)) : R+ ]$ g7 m+ ^% Q( ]& f
(setq ang(+ delta ang))
, A4 n4 v" X2 Z# T(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj))))
9 p/ s. h9 p. ]" [/ D(command pt) - d; E& N# `6 P. s: p6 X! x
)
9 O: }1 \+ o% \* i, R9 Z(setq g3(* j0 jj)) ;
, \" T9 X4 D+ ~- g2 e5 I; ~(command "")
. |% f* D& P2 i7 |8 Q, \(setq e1(entlast))
, A8 i& o3 K2 Z% I- i" A! c' U1 A2 Y(command "ucs" "x" "") ; # j+ Y- e- G4 l5 m. C
(command "circle" pt1 (/ d0 2)) ' u/ @- l8 z6 V: n+ W5 R7 J8 x
(setq e2(entlast)) R6 }! n. q' ~3 ]( o0 Y6 l1 R9 Y
(command "extrude" e2 "" "p" e1) 3 Y( l3 O5 n" j- G
(setq e3(entlast)) # e/ O, R; J) ]- O' Z7 Y' |- W, z
(setq pt2(list r (/ d0 4) 0)) ;
, G' M8 C+ I0 t& J(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) 6 S2 c9 X3 q, E7 x5 `
(setq pt3(list (- 0 r) py 0))
6 K1 U" ?1 |, [ e; ~5 L(command "slice" e3 "" "zx" pt2 pt3) - U" w D1 E; t. m% ]
(command "slice" e3 "" "zx" pt3 pt2) 4 X* q" ^& z b g" h% f
(command "ucs" "w") 5 o& \8 z$ Z3 f6 o
) G5 }7 ?, G8 r" t
) 8 Q( Z* y+ |( m3 k* {
;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！