|
快速繪製3D彈簧
) R: [( ^ B6 n3 z; D$ w+ b" t- y" z將下列彈簧的程式(LISP)加載到CAD中就可以使用,很方便的!
9 N: Y0 p! F7 i% g;;;-----------彈簧的程式----------
$ e a/ ]: i% g: v% [$ D1 b(defun c:spring(/) M1 c8 ?, D6 n1 k8 ~1 o+ ]# V
(setq p1(getpoint "請指定螺旋線基點:")) - L) {. `" X! _5 |& U3 i) u' X
(setq r(getreal "請輸入半徑:")) " z/ \0 |. y% N/ G
(setq d0(getreal "請輸入彈簧絲直徑:"))
' G2 x" a4 D) J5 x1 H(setq disp(getreal "請輸入節距:")) % c% V, b3 Y/ r& _7 F$ P. |( T
(setq n0(getint "請輸入圈數:"))
! u" L* ~( O4 r l( ~(setq n(getint "請輸入每圈細化段數(16/20/24/28/32/36/40/48/52/56/60/100):")) ' s% H7 p) r- x0 V3 x
(setq n1(* 1.25 n)) ;
; R% `6 c2 s H: Y* C! q(setq n1(fix n1)) 7 K2 i" H( E( P
(setq n2(* n0 n)) ;工作圈細化段數
. F+ E2 ~, e; i8 C, B L(setq delta(/ (* 2.0 pi) n)) ;單位轉角 - X9 @4 j5 K. F( w
(setq j(/ disp n)) ;工作圈軸向位移量 1 N9 | Y+ ?4 I, a- [
(setq j0(/ d0 n)) ;支撐圈軸向位移量 4 P7 d% {: u6 Q- L G
(setq bb(caddr p1)) 8 R% `- L) d% _7 m
(setq ang 0) - @* i* @( g; M( m* K1 L
(setq jj 0)
, j! K: e4 H6 N1 T4 }1 S(command "ucs" "o" p1)
4 H2 n8 v3 J- o5 z(setq pt1(list r 0 0)) , @8 G$ d! }, M% o Q7 P3 |" K o
(command "3dpoly" pt1) + i8 ?1 P R& p e, x
(repeat n1 ;繪製下支撐圈 / T$ m9 z) {( F
(setq jj(+ jj 1))
9 k: B2 f U& @5 _(setq ang(+ delta ang)) K- U( q% V# x
(setq pt(list (* r (cos ang)) (* r (sin ang)) (* j0 jj))) # E; Y/ K. W, A% }+ M; Y
(command pt)
. H# [0 Y) A" b' o! D)
" V% b& s8 }. G) E; @5 Y: P(setq p2(list 0 0 (* j0 jj))) ) ]5 H1 s. H6 M8 H, T5 @. t
(setq g1(* j0 jj)) ;下支撐圈高度
h! S" I2 N: s& k; G% p(setq jj 0) - g0 v6 ?. Z* B" L" ~5 R
(repeat n2 ;繪製工作圈
. l% S) h% k7 J0 P' M: H8 }(setq jj(+ jj 1))
5 j# m2 U# I$ D7 }1 }2 C) a* k(setq ang(+ delta ang)) : ^7 x" H, `9 H! H; x2 B
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 (* j jj))))
. t8 g+ k' s5 y3 x(command pt) 2 C# _& W( s: w; X: e
)
2 Z9 l- ?" u1 ~8 v) [' v(setq p3(list 0 0 (* j jj))) . c! t1 Q. M# O, |' ~- m
(setq g2(* j jj)) ;/ c0 g# q: X! A u: K# R
(setq jj 0)
. m9 S$ w4 T8 T) p; I& O(repeat n1 ;
2 y; M" E% I0 V/ Y) d8 z0 H(setq jj(+ jj 1)) 4 W7 H2 x8 P3 ?4 I) W
(setq ang(+ delta ang)) 7 h. `/ l; R. I0 ~3 p& o; K
(setq pt(list (* r (cos ang)) (* r (sin ang)) (+ g1 g2 (* j0 jj))))
/ p; A9 {2 P: w9 ^% e1 B# A7 \1 K(command pt) 7 l% p$ r: `; C3 _
) % D9 P; s- g ~5 f) Q {5 b
(setq g3(* j0 jj)) ;
4 e0 U7 }4 |' Y m(command "") + R; Z" t& x5 o# W( r+ `6 i
(setq e1(entlast)) 2 S1 e+ O2 g0 ?
(command "ucs" "x" "") ;
6 m! ?6 | O( X: C$ |(command "circle" pt1 (/ d0 2))
1 {4 H: Y5 K2 A(setq e2(entlast)) , ^* H) o# s5 H! U! x3 _0 l
(command "extrude" e2 "" "p" e1)
' B. O( G& f! n0 R# O(setq e3(entlast))
0 J! z ]* H) @' [% s% }' \ l2 x(setq pt2(list r (/ d0 4) 0)) ; ' W0 |; x! @3 w; b9 K6 H0 g
(setq py(+ g1 g2 g3 (- 0 (/ d0 4)))) 2 X& b( J* ^. o8 m+ H) R2 j7 f# |
(setq pt3(list (- 0 r) py 0))
; @ n. c9 y6 k, W! J3 [5 ?0 [(command "slice" e3 "" "zx" pt2 pt3) / | b* N1 m& ~6 q0 Q
(command "slice" e3 "" "zx" pt3 pt2) ( q" g+ Z; c/ r1 e: p" }! Y8 k
(command "ucs" "w")
/ V) h: q9 t! F# W9 `' C4 O8 W; t1 u& {; F% |
) 9 \$ p- Y; d2 }9 |8 b( m* x
;;;---------end----------彈簧程式結束! |
|