我厂生产的挖掘机有一种短齿齿轮,其模数m=24,齿数z=13,压力角α=20°,齿顶高he=0.8m,齿根高h_i=1m。由于厂内缺少短齿专用滚刀,以前一直采用指状铣刀在专用机床上铣制,但这机床分度精度不高,影响加工质量。现已改用标准滚刀在滚齿机上进行加工,这种方法不用专用滚刀,且加工质量达到要求,还可根据这个原理运用到其他机床上加工短齿齿轮,如插齿机、铣床等。现将加工方法介绍如下: 一、齿侧间隙移距量的计算用标准滚刀滚削短齿齿轮,可看成是标准 I produced a short excavator gear, the modulus m = 24, the number of teeth z = 13, the pressure angle α = 20 °, addendum height he = 0.8m, root height h_i = 1m. Due to the lack of short-hob-specific hob factory, has been used in the past milling cutter on a dedicated machine, but the machine indexing accuracy is not high, affecting the processing quality. Has been converted to hob hobbing machine processing, this method does not require a special hob, and the processing quality to meet the requirements, but also according to this principle applied to other machine processing short tooth gear, such as gear shaper, milling machine. Now the processing methods are described below: First, the calculation of the amount of displacement of the tooth gap Hob hobbing with a standard hob gear can be seen as a standard