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快速繪製3D彈簧# H5 e/ j- k8 i0 ~$ W# |) ?/ B' x, ~
將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！, C+ S- e- C, l
;;;-----------彈簧的程式----------
# L; d9 k: Z1 W& l( X(defun c:spring(/)
$ Q4 e8 A5 I0 E1 I+ O: G2 X(setq p1(getpoint "請指定螺旋線基點:"))
5 y7 a9 H; ^( H(setq r(getreal "請輸入半徑:")) - t( {: I# _, \ G' t/ F0 j
(setq d0(getreal "請輸入彈簧絲直徑:"))
- N# F {: m$ J% h) l(setq disp(getreal "請輸入節距:"))
2 V% E; ~# X3 m2 j. V(setq n0(getint "請輸入圈數:")) 7 n4 s5 y4 H# f" x: W, \
(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):")) 1 P+ l9 p$ [* n; C3 ?! `! }
(setq n1(* 1.25 n)) ; 3 p1 K- z# Q/ o' j
(setq n1(fix n1))
& j. |9 \- {% R8 s& c3 y) j M0 V(setq n2(* n0 n)) ;工作圈細化段數 9 Y2 {, t: ~% f
(setq delta(/ (* 2.0 pi) n)) ;單位轉角
2 }( b3 ?4 S- N# v" u; _(setq j(/ disp n)) ;工作圈軸向位移量 Z2 j0 \$ N' x. J F2 a6 i7 |
(setq j0(/ d0 n)) ;支撐圈軸向位移量
, }5 P1 i4 A; \2 d; u! S" f# _(setq bb(caddr p1)) 7 p. |' N8 a$ o0 N
(setq ang 0) 1 i5 ~9 @: e( r! R
(setq jj 0)
- B5 }; \+ C7 g% M0 r5 q(command "ucs" "o" p1)
+ s1 i! {4 z0 \" T1 d! Z( J; m1 f: x(setq pt1(list r 0 0))
7 B% \9 Z' h/ z+ {7 P" ?(command "3dpoly" pt1)
4 I) A5 a+ _1 Z(repeat n1 ;繪製下支撐圈
0 D1 L; C3 B' @( Q2 E(setq jj(+ jj 1)) 7 d6 N2 x1 p' I$ o c. }. ?2 b! y
(setq ang(+ delta ang))
( v1 a( w: x2 ]% {3 E% x(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) ( K' q" T1 l) T/ f; H6 t: ^7 }
(command pt) 5 m" b, `$ K) _, a5 u# u
) ! r3 A* B% k Q3 z% P7 Z
(setq p2(list 0 0 (* j0 jj)))
$ r `: \* X+ J& T1 b# \(setq g1(* j0 jj)) ;下支撐圈高度
7 `1 @0 A: V) r" l4 [* u+ J(setq jj 0)
0 C: j e# Q0 n5 A7 c(repeat n2 ;繪製工作圈 6 T( P0 \. u; a; s" V% d) z
(setq jj(+ jj 1)) ; X" L. J8 ?1 ^/ T' }9 g2 P
(setq ang(+ delta ang)) 6 |" E$ o# w5 D$ c
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj))))
; T# m7 _( |% i5 S' @- b+ L) u(command pt) 3 h7 x# s! S4 ?1 V, y" v
)
& p3 f8 h2 y; {/ z/ D2 T(setq p3(list 0 0 (* j jj)))
. b/ [1 }$ p8 V6 U1 Y1 I/ T4 R(setq g2(* j jj)) ;7 c; W2 A, O( v! w( ?, k5 O
(setq jj 0) / L q: B0 r7 [; E
(repeat n1 ; 3 t+ ^* y6 ?* R1 L [% f
(setq jj(+ jj 1))
4 M& E2 o1 ^& c! ^(setq ang(+ delta ang)) ) ~, G9 T3 l4 e
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj)))) 7 X3 a+ @0 o2 m8 _1 Z0 S2 E! w6 G
(command pt) 5 W- s2 Y6 v6 ?: \8 t1 C
)
+ m, F3 @ X; T(setq g3(* j0 jj)) ;7 Z" y% |! ~& w& M) J! F9 L
(command "") * W/ o' [# [% e2 F5 S9 W
(setq e1(entlast))
6 b3 X6 D- A0 K0 r) Y2 ~(command "ucs" "x" "") ; 2 Z! X0 }/ ~8 Y# f: L2 f
(command "circle" pt1 (/ d0 2))
; O' D" z T8 j; Y$ t" ]' d(setq e2(entlast)) : B4 ?3 N/ w/ B$ c) N' a# ]7 W
(command "extrude" e2 "" "p" e1) 0 l V: p a+ {. }3 v( I; _
(setq e3(entlast))
( ]. V1 R" e: e, N; @3 R(setq pt2(list r (/ d0 4) 0)) ;
1 o9 ~2 a# v4 u# X, ?/ J+ |* B$ ?4 O(setq py(+ g1 g2 g3 (- 0 (/ d0 4))))
: B, [* f0 I3 z& C; r(setq pt3(list (- 0 r) py 0)) # U. S( w+ P( T5 |' h. M
(command "slice" e3 "" "zx" pt2 pt3) 4 w6 E; [! O: I( n" @4 n6 F
(command "slice" e3 "" "zx" pt3 pt2)
" Q- U, i; h- T0 g# k) v(command "ucs" "w") 9 m1 \7 C9 ^6 {$ L2 l& ~( u
+ `+ i& [ B: c. j)
+ K }$ G' \' z- y8 j6 s) i' @;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！