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把下面的程序导入cad ,就可以画螺纹了!(2007以前的版本).画螺纹的命令就是luox
5 K6 e- I' G6 x8 `' [0 X( [(defun C:luox(/)
/ K( g3 n% `' V; [3 X6 l (setq b1 (getpoint"请指定螺旋线基点:")) P3 d/ J, ` q$ j* v% U
(setq r (getreal"请指定螺旋线的平均半径:"))
1 Y4 M6 u/ D- H8 k( L0 r, j (setq disp ( getreal"请输入螺旋线节距:"))$ W, s. I- p6 S9 P& V8 H& K$ }
(setq n (getint"请输入每圈细化段数:"))9 m7 d" u, f& f1 V8 a/ U- W0 ?1 R
(setq delta (/(* 2.0 pi) n))! V3 _9 h. j: m+ L! N! Q, {7 |5 w
(setq j (/ disp n))
, j( ?0 k6 i6 J6 S2 F, w' w (setq bb(caddr b1))2 l4 v K) y$ o1 [
(setq ang 0)
5 \" |4 N; K5 D" d9 o# ]# [ (setq k 0)! x; `' R1 A; Z4 [" E/ m. r
(command "ucs" "o" b1)& A% G: L$ J J+ O
(command "3dpoly" (list r 0 0))
& y. ?3 {* E2 e- t (repeat n! h. S; ]+ S/ K, ~
(setq k(+ k 1))
1 i" @& J# \: A7 O1 r* `" M9 h (setq ang(+ delta ang))
* M) F4 N1 M5 \. I4 o (setq pt2(list (* r(cos ang)) (* r(sin ang)) (+ 0 (* j k))))% L( P; a/ l1 z1 `; i3 W4 x6 j
(command pt2)
9 U$ c4 ~7 x3 e9 F$ Y4 p/ I )
. a) }9 @2 Q9 |) a(command" ")) c4 \9 t& c# V1 v F2 z# I" d
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