Aiming at the adjustment of tool post angle in the process of spur gear hobbing

the model of the hob rolling spur gear with addendum modification is established

and the influence of the angle on the tooth profile and tooth thickness is calculated by using Matlab programming.The results show that the angle on the impact of the tooth profile is small

but significant on the tooth thickness.At the same time

the ideal tool post angle can be obtained by this method

so that the machining error of the spur gear with addendum modification can be minimum.