Design of the Gear Hobbing Process for Variable Infeed Angles


Duration: January 1st, 2017 - December 31st, 2018

Funding Body: VDW / AiF

Starting Point:

In industrial practice, axial gear hobbing is often used for cylindrical gear manufacturing. The process is, however, limited in its application, due to a necessary axial infeed and therefore an increased axial workspace. For components with interference contours close to the working area, alternative soft machining processes are often used. By applying a diagonal or radial infeed, the required workspace in gear hobbing can be reduced and collisions avoided. However, almost no research regarding the tool life behavior and the interactions of the chipping conditions for different infeed strategies is available. Nowadays, the radial infeed is designed according to experience. Neither characteristic values of the assessment of the process performance nor design methods for varying infeed angles are state of the art.

Research Objective:

The objective of the project is the development of a method for the design of the hobbing process for variable infeed angles. First, a calculation method based on the geometrical penetration calculation is to be developed which allows an automated determination of the chipping characteristics for any infeed angle. Subsequently, the influence of the infeed angle on the cutting conditions will be analyzed theoretically by means of the geometric penetration calculation as well as empirically in wear investigations and a mathematical model will be derived. Based on these investigations, a design method is to be developed, which enables a knowledge-based design of the infeed for gear hobbing.

Your contact:
Nico Troß, M.Eng.
Manfred-Weck-Haus 112
Tel.: +49 241 80-28285
Fax: +49 241 80-22293