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快速繪製3D彈簧
9 f/ g& r* ], a' }# l4 Q將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！
) i3 I9 A4 B* U) f;;;-----------彈簧的程式---------- $ W z. v- z* V8 h- R4 F
(defun c:spring(/) - c2 ?3 n8 V2 ^ u9 r6 {$ G9 I& l" p
(setq p1(getpoint "請指定螺旋線基點:")) 2 ?- h$ h6 J( @+ \
(setq r(getreal "請輸入半徑:"))
6 u3 v# l. y5 T" \# X; ~6 X(setq d0(getreal "請輸入彈簧絲直徑:"))
7 J! R4 v' O' y* g* c' h(setq disp(getreal "請輸入節距:")) + X. t* X! h# c* `
(setq n0(getint "請輸入圈數:"))
6 R* A7 X( n- i q$ |! n \" @# A(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):")) / ?* x* q) T2 C+ T. @2 T! J
(setq n1(* 1.25 n)) ;
/ A7 t( J! ^1 z- p% n(setq n1(fix n1))
: z: F& m& r9 E, \. H(setq n2(* n0 n)) ;工作圈細化段數
# ?8 @( z7 P$ L, Z(setq delta(/ (* 2.0 pi) n)) ;單位轉角
! Z2 ^0 g5 u, y. c) g" _(setq j(/ disp n)) ;工作圈軸向位移量
* i9 z6 ~3 }# L(setq j0(/ d0 n)) ;支撐圈軸向位移量
/ Y3 ^8 A4 }! T/ g2 |(setq bb(caddr p1))
' \5 \6 ?6 |+ u5 L7 N( ^1 m(setq ang 0) 1 l Q4 X( k7 f$ D$ O2 p
(setq jj 0)
) G/ N Y% m" u' [/ I: [3 O(command "ucs" "o" p1)
- S z6 j" m/ ^- O9 C* Z7 l: C* ~(setq pt1(list r 0 0)) u' t) Q: w: g5 Q6 b8 p6 Q8 u0 w, [
(command "3dpoly" pt1) 7 D2 {1 ~! g* B# }2 w. U. J! p5 w: k
(repeat n1 ;繪製下支撐圈
" _! s3 N1 y' ?- O/ X(setq jj(+ jj 1))
2 @% E- L1 O& g, M(setq ang(+ delta ang)) ?* l$ W& r5 W3 u% M9 v- Z
(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) 0 j/ Q) \1 `( W& W* P
(command pt)
3 _+ m5 M5 W% P, Q; M ^- w)
; w/ `2 ~9 t; a% R(setq p2(list 0 0 (* j0 jj))) 5 o2 a* z2 P5 o2 [* m2 x
(setq g1(* j0 jj)) ;下支撐圈高度
|) z3 V' H |2 \. V' N+ R(setq jj 0)
7 }5 k; H, y* v) Q(repeat n2 ;繪製工作圈 4 d q$ u/ {8 J9 u/ s* F
(setq jj(+ jj 1)) 9 `1 t7 L& |% y' h$ t
(setq ang(+ delta ang)) 4 J0 s& e( J W1 A* r
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj)))) / T* u; n3 N! z1 a! U
(command pt) 7 I3 N) b7 d3 c; U% f6 C
)
R& [; I B$ N$ D; I1 }% P" I(setq p3(list 0 0 (* j jj))) 7 B# E: ^" L( w. a
(setq g2(* j jj)) ;
- w, u# _; |* H- ^6 _& H d5 C4 s% [(setq jj 0)
" X: Z- T/ k8 K/ h+ ?5 r(repeat n1 ;
0 _5 y+ Y5 W- M" l _(setq jj(+ jj 1))
+ ^( }9 w4 b4 }(setq ang(+ delta ang)) . Z) c6 ^& p. p: z$ O, C0 l- v
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj)))) 5 w( a6 t, P+ N* p* i# O7 m" K
(command pt)
* A% x' i5 ?# y+ ^3 z8 r2 B# F5 m)
! n& l, L3 s9 [(setq g3(* j0 jj)) ;/ T, a2 O# H* S7 X; h) ^
(command "") - j0 g3 f3 |+ e" G" R2 |1 ^
(setq e1(entlast))
* U/ X3 S- { O0 S3 Z) v& f(command "ucs" "x" "") ; ; N2 }/ d1 z" v
(command "circle" pt1 (/ d0 2))
; \/ K1 r R1 s# P4 b! l(setq e2(entlast)) # N# S$ U" Z( V; h" f/ ^* M
(command "extrude" e2 "" "p" e1) 6 d2 b7 I6 @5 @$ b
(setq e3(entlast)) 1 G4 C) D% ^, G6 M L
(setq pt2(list r (/ d0 4) 0)) ;
" z6 ~- Z7 U: v" m0 f9 ^(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) 1 b) p6 N5 U3 c( e9 _5 Q
(setq pt3(list (- 0 r) py 0))
! I. z8 Y2 o' Q9 G2 L(command "slice" e3 "" "zx" pt2 pt3) : s( P, M8 e. k( l- a8 y+ W: M/ u
(command "slice" e3 "" "zx" pt3 pt2) }. n: j: K8 c* { H7 A8 t
(command "ucs" "w") - I: r/ e/ ~* E5 g7 @& r, C) q
/ z4 g- d, c( h% w4 }
)
+ U+ M/ [5 A0 ?4 O;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！