(initget 7) ( setq d( getdist"hn请输入螺纹孔的公称直径(mm)") (cond;根据螺纹孔的公称直径检索有关数据(以螺纹零件的材料为钢或青铜为例) (=d60)( setq ll I101212d24917)ll表示螺纹深度 (=d8.0)( setq ll I121216d26.647)2表示钻孔深度 (=d100)(setq11161220d28.376);d2表示螺纹小径 (=d12.0)( setq ll 18122d210.106) (=d140)( setq ll221226d211.835)) (=d16.0)( setq ll241228d213.835)) (=d18.0)( setq I1281234d215.294) (=d200)( setq ll301235d217.294) (=d220)( setq ll321238d219294) (=d24.0)( setq ll36142d220.725) (=d27.0)( setq ll40145d223.725) (=d30.0)( setq ll44l252d226.211) (=d36.0)( setq 11 52160d231.670) ( setar2(/d22.0),计算光孔各点坐标 ptl(polar pc(+( pi 2.0)ang)r2) pt3(polar pc ang(+ 12(*0.57735 r2))) pt4(polar pt2 (-ang(pi 2.0)d2) (polar pc(+(*pi 1. 5)ang)r2)) ( command" pline" ptI pt.2pt3pt4pts"c");画光孔 (setq sl(ssget"I")) ( command"line"( polar pc(+ pI ang)3)( polar pt3ang3)");画中心线 (command"pline"pt2 pt4") ( setq rl(d2.0)计算螺纹线的各点坐标 ptll(polar pc(( pi2.0)ang)rl) pt12(polar pill ang ll pt13(polar pt12(-ang(pi 2.0))d) pt 14(polar pc(+( pi 1.5)ang)rD)) ( command" pline" pull ptI2pt13ptl4");画螺纹线 (command"pline"pt12 pt13"") ( setq pt2l( polar pc(+(pi2.0)ang)(+r110.0);计算剖面线边界上的点坐标 pt22( polar pt2lang(+1215.0),可根据需要设置剖面线边界的大小 pt23(polar pt22(-ang(pi 2.0))(+ d 20.0)) pt24 (polar pc(+(' pi 1.5)ang)(+ rl 10.0))) ( command" pline"pt2lpt22pt23pt24"c");生成剖面线的边界 "1") (command"zoom"a") ( command" hatch"U""45""2"n"s2sl""),画剖面线,形成消隐螺纹孔 ) end 三、圆的中心线绘制命令“x(initget 7) (setq d (getdist "\n 请输入螺纹孔的公称直径(mm):")) (cond;根据螺纹孔的公称直径检索有关数据(以螺纹零件的材料为钢或青铜为例) ((= d 6.0) (setq l1 10 l2 12 d2 4.917));l1 表示螺纹深度 ((= d 8.0) (setq l1 12 l2 16 d2 6.647));l2 表示钻孔深度 ((= d 10.0) (setq l1 16 l2 20 d2 8.376));d2 表示螺纹小径 ((= 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);计算光孔各点坐标 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");画光孔 (setq s1 (ssget "l")) (command "line" (polar pc (+ pi ang) 3) (polar pt3 ang 3) "");画中心线 (command "pline" pt2 pt4 "") (setq r1 (/ d 2.0);计算螺纹线的各点坐标 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 "");画螺纹线 (command "pline" pt12 pt13 "") (setq pt21 (polar pc (+ (/ pi 2.0) ang) (+ r1 10.0));计算剖面线边界上的点坐标 pt22 (polar pt21 ang (+ l2 15.0));可根据需要设置剖面线边界的大小 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");生成剖面线的边界 (setq s2 (ssget "l")) (command "zoom" "a") (command "hatch" "U" "45" "2" "n" s2 s1 "");画剖面线,形成消隐螺纹孔 );end 三、圆的中心线绘制命令“zxx