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快速繪製3D彈簧
+ l( w, _' ^# |7 h# I8 _+ n* \將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！0 X" E: o8 L5 I
;;;-----------彈簧的程式---------- 4 ~3 S4 K, V; V2 `: m! K
(defun c:spring(/)
' r. p& D% K! [# s" Q(setq p1(getpoint "請指定螺旋線基點:")) " Z% l, ]+ L0 O0 N! T! M8 }
(setq r(getreal "請輸入半徑:")) ; }$ v3 _) P/ E
(setq d0(getreal "請輸入彈簧絲直徑:"))
+ V9 L, H* f8 u9 \+ k6 M(setq disp(getreal "請輸入節距:")) - n6 t) `0 n+ D/ d# F7 \# E+ ^5 v
(setq n0(getint "請輸入圈數:")) ( w9 }0 E/ v2 Q# v8 n
(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):"))
" |8 Q0 R) X" @2 X(setq n1(* 1.25 n)) ;
5 m L/ }- d2 t1 h(setq n1(fix n1)) 2 U' Z; I2 T) e! a; Y6 f+ l
(setq n2(* n0 n)) ;工作圈細化段數
- E: F: N' p2 R: F(setq delta(/ (* 2.0 pi) n)) ;單位轉角
2 i5 M7 T+ I7 J. E0 k(setq j(/ disp n)) ;工作圈軸向位移量 0 Y v; s# i. d: E ^; |
(setq j0(/ d0 n)) ;支撐圈軸向位移量 - j; I$ v3 s ~3 [6 {
(setq bb(caddr p1)) k0 o# u8 f5 V
(setq ang 0)
; r0 h. ~ v4 Q% D# f% s! J(setq jj 0) 0 M: i9 H6 \6 L( R- P
(command "ucs" "o" p1) ' W+ |# B5 M' P& t- O6 a
(setq pt1(list r 0 0)) 0 o& i4 t( @$ S0 |' z3 w
(command "3dpoly" pt1) 1 E$ r: m {* u4 g0 U7 n
(repeat n1 ;繪製下支撐圈 ; ^: h- }2 D9 h" _) [
(setq jj(+ jj 1)) * }4 j/ i; ?/ B& e
(setq ang(+ delta ang)) $ E1 m7 b0 s" s' R) ^, Q
(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) - V" K6 H* `) L) P# }
(command pt) , ] `3 x! j0 ^2 m
) $ ?1 M3 C0 A, X9 _; k' u
(setq p2(list 0 0 (* j0 jj))) 3 ]% Q/ u# T e& b+ F
(setq g1(* j0 jj)) ;下支撐圈高度 ! |' k* f5 H9 z' }7 s, r' X
(setq jj 0) ( N" w0 W! Q" [6 ~* v" i1 C0 V
(repeat n2 ;繪製工作圈 6 Z1 v. v0 J, C! F5 A
(setq jj(+ jj 1)) 7 q" i1 N( W% c8 J+ p5 ^. i
(setq ang(+ delta ang)) . L/ |2 {+ u. s
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj))))
2 W! \6 \3 w, Z/ N$ x# F* A% Z(command pt) ; |/ b4 l" C9 j) o
)
9 C; [$ N; H0 r! q* C1 a- c2 Q(setq p3(list 0 0 (* j jj))) . S- S+ u2 V; u5 Q$ W0 p
(setq g2(* j jj)) ;
* E# L$ A; E8 P6 `0 l: s(setq jj 0)
& K4 b& A% {5 i+ L' F(repeat n1 ;
' F. z& ]0 m$ A. \4 n(setq jj(+ jj 1))
8 }) w. g3 z; R, d, r(setq ang(+ delta ang)) $ a. x) `0 Z2 N* m3 T
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj))))
+ ?( B! O m$ Z1 w2 ?0 @, S(command pt) . n y/ Z2 E! a5 g/ V" d% x' o
)
8 D5 g2 E( k: W/ O( o; F(setq g3(* j0 jj)) ;
* g& C5 Y3 ]+ w9 f- c(command "") ; a5 E& X' E; r! p0 @
(setq e1(entlast)) . j" {2 A! B9 Q' N1 v3 i
(command "ucs" "x" "") ;
) \0 ^# n7 v7 {) A$ Z(command "circle" pt1 (/ d0 2)) B3 f) ?4 c+ B8 O4 X& U
(setq e2(entlast)) + m% m( ~/ i1 o
(command "extrude" e2 "" "p" e1)
( p3 q2 L2 |" A7 s0 x1 G/ k$ [. k(setq e3(entlast))
/ X& f. }5 P% f* x- \4 U+ Z(setq pt2(list r (/ d0 4) 0)) ; 0 W" _. {/ J( N; H4 c/ L
(setq py(+ g1 g2 g3 (- 0 (/ d0 4))))
( A# N& q! p0 Q# @' s5 [! C(setq pt3(list (- 0 r) py 0)) & `# P0 r! \, c# T. o. \4 `: j1 M
(command "slice" e3 "" "zx" pt2 pt3)
( A( t& V9 y. K( R( n(command "slice" e3 "" "zx" pt3 pt2) ( c5 _1 z V; H7 l8 i
(command "ucs" "w")
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) ~- M7 B8 c7 F: b1 v)
' [ I" P7 G& j6 e9 d: v;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！