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用LISP語言自定義AutoCAD命令
（作者未知） 2009/7/19
（接上頁）徑檢索有關(guān)數(shù)據(jù)(以螺紋零件的材料為鋼或青銅為例)
((= d 6.0) (setq l1 10 l2 12 d2 4.917));l1表示螺紋深度
((= d 8.0) (setq l1 12 l2 16 d2 6.647));l2表示鉆孔深度
((= d 10.0) (setq l1 16 l2 20 d2 8.376));d2表示螺紋小徑
((= d 12.0) (setq l1 18 l2 22 d2 10.106))
((= d 14.0) (setq l1 22 l2 26 d2 11.835))
((= d 16.0) (setq l1 24 l2 28 d2 13.835))
((= d 18.0) (setq l1 28 l2 34 d2 15.294))
((= d 20.0) (setq l1 30 l2 35 d2 17.294))
((= d 22.0) (setq l1 32 l2 38 d2 19.294))
((= d 24.0) (setq l1 36 l2 42 d2 20.725))
((= d 27.0) (setq l1 40 l2 45 d2 23.725))
((= d 30.0) (setq l1 44 l2 52 d2 26.211))
((= d 36.0) (setq l1 52 l2 60 d2 31.670)))
(setq r2 (/ d2 2.0);計算光孔各點(diǎn)坐標(biāo)
pt1 (polar pc (+ (/ pi 2.0) ang) r2)
pt2 (polar pt1 ang l2)
pt3 (polar pc ang (+ l2 (* 0.57735 r2)))
pt4 (polar pt2 (- ang (/ pi 2.0)) d2)
pt5 (polar pc (+ (* pi 1.5) ang) r2))
(command "pline" pt1 pt2 pt3 pt4 pt5 "c");畫光孔
(setq s1 (ssget "l"))
(command "line" (polar pc (+ pi ang) 3) (polar pt3 ang 3) "");畫中心線
(command "pline" pt2 pt4 "")
(setq r1 (/ d 2.0);計算螺紋線的各點(diǎn)坐標(biāo)
pt11 (polar pc (+ (/ pi 2.0) ang) r1)
pt12 (polar pt11 ang l1)
pt13 (polar pt12 (- ang (/ pi 2.0)) d)
pt14 (polar pc (+ (* pi 1.5) ang) r1))
(command "pline" pt11 pt12 pt13 pt14 "");畫螺紋線
(command "pline" pt12 pt13 "")
(setq pt21 (polar pc (+ (/ pi 2.0) ang) (+ r1 10.0));計算剖面線邊界上的點(diǎn)坐標(biāo)
pt22 (polar pt21 ang (+ l2 15.0));可根據(jù)需要設(shè)置剖面線邊界的大小
pt23 (polar pt22 (- ang (/ pi 2.0)) (+ d 20.0))
pt24 (polar pc (+ (* pi 1.5) ang) (+ r1 10.0)))
(command "pline" pt21 pt22 pt23 pt24 "c");生成剖面線的邊界
(setq s2 (ssget "l"))
(command "zoom" "a")
(command "hatch" "U" "45" "2" "n" s2 s1 &quo（未完，下一頁）
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