在工厂机械维修中往往会遇到短齿齿轮的加工问题,由于一般工厂又很少备有专门设计的短齿渐开线齿轮滚刀,只好用标准滚刀来滚切加工。由于标准渐开线齿轮滚刀齿顶高系数f=1,而短齿齿轮齿顶高系数f=0.8,如果采用标准滚刀切入短齿轮齿全高时,短齿轮分度圆齿厚还没有切至要求的尺寸,如图1所示,很明显此时滚刀分度圆(节线)位于短齿轮坯的分度圆与齿顶圆之间,短齿轮的分度正圆处于滚刀节线和外圆之间的位置,这 In the factory machinery maintenance often encountered short tooth gear processing problems, because the factory is rarely equipped with specially designed short tooth involute gear hob, had hob hobbed with a standard hob. Because the standard involute gear hob crest high coefficient f = 1, and the short gear tooth crest high coefficient f = 0.8, if the standard hob into the short gear tooth full height, the short gear indexing tooth thickness has not cut To the required size, shown in Figure 1, it is clear at this time hob indexing circle (section line) is located in the short gear billet between the indexing circle and addendum circle, the indexing circle of the short gear in the hob Festival The location between the line and the outer circle, this