Variable pressure angle (VPA) hob is an important cutting tool for generating the twist-free tooth flanks on a crowned involute helical gear used in the high precision gear boxes. However, an appropriate method for generating the VPA hob surface has not proposed yet. Therefore, this paper presents a worm grinding method for generating the helical surface of VPA hob on a CNC worm grinding machine. A mathematical model of the proposed method is established based on a standard hob by controlling rotational motion of the hob axis in the worm grinding process. A numerical example is implemented to verify the merits of the proposed method.
|Journal||MATEC Web of Conferences|
|State||Published - 9 Feb 2017|
|Event||3rd International Conference on Mechatronics and Mechanical Engineering, ICMME 2016 - Shanghai, China|
Duration: 21 Oct 2016 → 23 Oct 2016