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我厂在加工直径600公厘的蜗轮时,由于缺乏滚齿机,只好在铣床上来加工。但这蜗轮的半径超过了分度头的中心高度,工件不能直接装在分度头上。老师傅李万忠同志就积极想办法,改进在铣床上铣切大蜗轮,效果还不错。改进的方法如附图,把分度头扬起90°,使主轴成垂直方向,并在分度头和工作台间加垫一块斜垫铁2,即把垫铁2固定在工作台上,分度头安装在垫铁上。斜垫铁2的斜度等于工件(蜗轮)的螺旋角α(倾斜方向由工件螺旋角方
I plant processing 600 mm diameter worm gear, because of the lack of hobbing machine, had to milling machine to processing. However, the radius of the worm wheel exceeds the center of the indexing head height, the workpiece can not be directly mounted on the indexing head. Master Li Wanzhong actively think of ways to improve milling milling machine big worm, the effect is not bad. Improved method as shown in the figure, the indexing head raised 90 °, so that the spindle into a vertical direction, and in the indexing head and workbench pad a slant horn 2, the horn 2 is fixed on the workbench, Indexing head mounted on the horn. The inclination of the tilting horn 2 is equal to the helix angle α of the workpiece (worm wheel) (the direction of inclination is defined by the helix angle of the workpiece