发信人: hussout(跨越自己)
整理人: luor_d(2004-04-08 09:30:41), 站内信件
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我现在就告诉大家一个用Autocad 2004绘制真正的渐开线圆柱齿轮的方法,首先你要会一点点lisp语言的基础,把下面这段程序放入autocad2004的安装的目录下面的support目录里面的acad2004doc.lsp文件里面(acad2004doc.lsp文件可以用“记事本”打开),然后你在cad里面的command:输入:kxyzcl ,就可以绘制渐开线圆柱齿轮了!
;;;------------渐开线圆柱齿轮程序-----
(defun c:jkxyzcl()
(setq m(getreal "输入模数:M=?"))
(setq z(getint "输入齿数:Z=?"))
(setq h(getreal "输入齿轮宽度:H=?"))
(setq zj(getreal "输入齿轮轴径:ZJ=?"))
(setq lf(getreal "输入轮辐厚度(无轮辐结构时输入齿轮宽度):lf=?"))
(if (> h lf) (progn
(setq gr(getreal "输入轮毂端面半径:gr=?")) ;轮毂径
(setq yr(getreal "输入轮缘端面半径:yr=?")) ;轮缘径
(setq s(/ (- h lf) 2)) ;凹入深度
(setq l(- h s))
)
)
(setq rf(/ (* (- z 2.5) m) 2))
(setq rj(/ (* m z 0.939693) 2))
(setq r(/ (* z m) 2))
(setq ra(/ (* (+ z 2) m) 2))
(setq tt(* m pi))
(setq pj(/ 36.0 z))
(setq a(/ (* 1.25 m) (cos (* 20 (/ pi 180)))))
(setq pt0(list 200.0 30.0 0.0))
(setq pt1(polar pt0 0 (/ tt 4)))
(setq pt2(polar pt0 pi (/ tt 4)))
(setq pt3(polar pt1 (* 110 (/ pi 180)) a))
(setq pt5(polar pt1 (* -70 (/ pi 180)) a))
(setq pt4(polar pt2 (* 70 (/ pi 180)) a))
(setq pt6(polar pt2 (* 250 (/ pi 180)) a))
(setq pt7(polar pt6 (* -90 (/ pi 180)) 2))
(command "layer" "m" "l1" "c" 1 "" "")
(command "layer" "m" "l2" "c" 2 "" "")
(command "layer" "m" "l3" "c" 252 "" "")
(command "layer" "s" "l3" "")
(command "pline" pt7 pt6 pt4 pt3 pt5)
(setq i 1)
(while (<= i 7)
(setq pt6(polar pt6 0 tt))
(setq pt4(polar pt4 0 tt))
(setq pt3(polar pt3 0 tt))
(setq pt5(polar pt5 0 tt))
(command pt6 pt4 pt3 pt5)
(setq i(+ i 1))
)
(setq pt8(polar pt5 (* -90 (/ pi 180)) 2))
(command pt8 "c")
(setq pt(polar pt0 (* 180 (/ pi 180)) (* 4 tt)))
(command "move" "l" "" pt0 pt)
(setq e0(entlast)) ;完成齿条
(command "layer" "s" "l1" "")
(setq p0(polar pt0 (* 90 (/ pi 180)) r))
(command "circle" p0 ra)
(command "region" "l" "")
(setq e10(entlast)) ;完成齿轮毛坯圆
(command "layer" "s" "l2" "")
(setq j 1)
(while (<= j z)
(setq i 1)
(while (<= i 10)
(command "rotate" e10 "" p0 pj) ;旋转毛胚
(setq yd(* r pj (/ pi 180) i))
(setq pt(polar pt0 0 yd))
(command "copy" e0 "" Pt0 pt) ;移动齿条
(command "region" "l" "")
(setq e1(entlast))
(command "subtract" e10 "" e1 "")
(setq i(+ i 1))
)
(setq j(+ j 1))
)
(command "layer" "s" "l1" "")
(command "extrude" e10 "" h 0) ;拉伸齿轮
(setq e5(entlast))
(command "erase" e0 "")
(if (> h lf)(progn
(command "circle" p0 yr) ;创建右侧轮缘轮廓
(setq e1(entlast))
(command "extrude" e1 "" s 5)
(setq e1(entlast))
(command "circle" p0 gr) ;创建右侧轮毂轮廓
(setq e2(entlast))
(command "extrude" e2 "" s -5)
(setq e2(entlast))
(command "subtract" e1 "" e2 "")
(setq pt(list (car p0) (car (cdr p0)) h))
(setq s(- 0 s))
(command "circle" pt yr) ;创建左侧轮缘轮廓
(setq e3(entlast))
(command "extrude" e3 "" s 10)
(setq e3(entlast))
(command "circle" pt gr) ;创建左侧轮毂轮廓
(setq e4(entlast))
(command "extrude" e4 "" s -10)
(setq e4(entlast))
(command "subtract" e3 "" e4 "")
(command "cylinder" p0 (/ zj 2) h)
(setq e4(entlast))
(command "subtract" e5 "" e1 e3 e4 "")
)
(progn (command "cylinder" p0 (/ zj 2) h)
(setq e4(entlast))
(command "subtract" e5 "" e4 "")
)
)
)
;;;------end-----程序结束
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