在滚齿机上滚切圆柱直齿和斜齿轮时,刀架扳动角度分别为(图1): 其中占δ:刀架扳动角度,λ刀:滚刀螺旋升角, β_工:工件螺旋角。λ刀一般比较小,常在5°以内,从上式可看出,当β_工较大时,δ也随之增大,这样,滚刀在从上向下(或从下向上)走刀时,首先接触工件的就是滚刀端部(图2),而滚刀端部正是刀齿逐渐变“瘦”的部位,强度很低,滚 Hobbing straight hobbing machine and helical gear hobbing, the angle of the turret were (Figure 1): Which accounted for δ: Turret angle, λ knife: Hob helix angle β_ 工: Workpiece spiral angle. λ knife is generally relatively small, often less than 5 °, can be seen from the above formula, when β_ workers larger, δ also increases, so that the hob from top to bottom (or from bottom to top) to go Knife, the first contact with the workpiece is hob end (Figure 2), and hob end is the tooth gradually become “thin” parts, low intensity, roll