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快速繪製3D彈簧% k& X q' X" A0 M( m5 D0 W
將下列彈簧的程式（LISP)加載到CAD中就可以使用，很方便的！4 M' c5 a3 u$ a# w! T1 D
;;;-----------彈簧的程式---------- 6 K2 }8 L' X6 w
(defun c:spring(/) - F% o! o9 p1 K& C# b! T
(setq p1(getpoint "請指定螺旋線基點:")) 7 x, j! v. w8 z4 F* h% L( v
(setq r(getreal "請輸入半徑:")) & f9 T3 m! A5 O& s$ H
(setq d0(getreal "請輸入彈簧絲直徑:")) : u" W6 p9 v0 {5 u7 Q
(setq disp(getreal "請輸入節距:"))
) F! u( D' W# G4 X+ v. ]) a; v' y% w(setq n0(getint "請輸入圈數:")) ' o- j: I2 G1 `% t. 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):"))
" v' \1 D$ t7 s/ e4 Q9 J(setq n1(* 1.25 n)) ; , v- a; C* H) N0 F+ _* b0 M
(setq n1(fix n1)) ) D! H: y$ i* W( T, I
(setq n2(* n0 n)) ;工作圈細化段數
`9 S( p0 N8 z# e% D, }3 y(setq delta(/ (* 2.0 pi) n)) ;單位轉角 ( n3 E4 @" i( v1 u* r
(setq j(/ disp n)) ;工作圈軸向位移量
a5 H" J( B) t) L0 p(setq j0(/ d0 n)) ;支撐圈軸向位移量
+ U9 q% \+ M- n(setq bb(caddr p1)) 2 X0 s! u/ l j4 i9 W' x7 _! R
(setq ang 0) 7 o r- z! m& n2 C/ c
(setq jj 0)
( g( z0 r4 m: y- C(command "ucs" "o" p1)
7 g4 {$ L4 S& a6 f(setq pt1(list r 0 0))
: J/ ?0 S! c$ L: E( t/ I% X7 s(command "3dpoly" pt1)
& R/ v3 M0 @( {) @1 {4 o, {6 z; [(repeat n1 ;繪製下支撐圈
- u; L- P5 z0 U5 G5 {( s(setq jj(+ jj 1)) - K6 c9 G5 m; x5 h
(setq ang(+ delta ang)) ( [, ` W6 c& a( D) s
(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) & Z' ?( k7 n2 ^$ o- J6 V
(command pt)
6 ^5 `# g; U, I1 `)
4 L+ j; Q' d/ p: m* W; b" p(setq p2(list 0 0 (* j0 jj)))
2 v6 p% |4 c m8 _! f(setq g1(* j0 jj)) ;下支撐圈高度 / B# C7 x. M5 n) Y3 {4 I& u
(setq jj 0)
# b: U+ R! C5 b& b1 j: @# D(repeat n2 ;繪製工作圈
& H8 O$ `( {4 j! i(setq jj(+ jj 1)) 7 J/ j! l( g* n
(setq ang(+ delta ang))
, I, P9 V/ R3 b# d5 K4 w- z7 l(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj))))
6 A: F0 W# k: x' h0 P(command pt) ( [7 p ~3 ~6 |: t4 G& m D
) " }9 k3 X, `7 l/ t
(setq p3(list 0 0 (* j jj))) ( o1 k0 n `0 D- L( X t/ O
(setq g2(* j jj)) ;6 e; [1 m" X2 M
(setq jj 0) # U1 {, B7 S% f
(repeat n1 ; & _' k" d$ _! m$ k! |3 o* M+ i! z o! _
(setq jj(+ jj 1)) 7 S) ~! r+ L' o! P R7 f$ Y! ]% p
(setq ang(+ delta ang)) , L' f* m2 S8 Q# j9 z9 e
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj))))
' B2 i! Y r7 V0 i7 N0 C1 j7 A% A! F(command pt)
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(setq g3(* j0 jj)) ;( C$ _4 a3 t, x5 _
(command "") . r! [2 J0 C! C+ R+ R' V
(setq e1(entlast)) . j7 F7 ?: P3 |+ l
(command "ucs" "x" "") ;
! a9 ~0 P, p5 }+ ~7 o& k(command "circle" pt1 (/ d0 2))
) b. R% m" X/ k/ v; X, `0 C(setq e2(entlast)) $ j& @0 D9 v$ G O' S5 Y: \
(command "extrude" e2 "" "p" e1) : ~4 p! x+ u5 h' V1 b
(setq e3(entlast))
/ S$ Z2 a% S9 i; }- m( A; G( \3 Q(setq pt2(list r (/ d0 4) 0)) ;
A2 F; y r) D" n(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) & a; V3 I; T8 g, r
(setq pt3(list (- 0 r) py 0))
# j) u: T5 s) G! D/ B(command "slice" e3 "" "zx" pt2 pt3) 5 |3 u* ~/ K5 \5 U! T8 c# O: n
(command "slice" e3 "" "zx" pt3 pt2)
' X) N( _( `6 l! s(command "ucs" "w")
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;;;---------end----------彈簧程式結束！ |
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发表于 2009-6-17 19:15
楼主
搞不懂！！！！