STUDY ON WEAR AND DESTRUCTION OF HOB IN GEAR HOBBING

摘要

The wear and destruction appearances of hobs are researched. The reasons of the wear and destruction of hob are analyzed. And the influence of the change of the hobbing force and the hobbing temperature on the wear and destruction of hob in gear hobbing is also analyzed. In gear hobbing, the main wear mechanisms are adhesion and ploughing when cutting the 20CrMnTi gear using W18Cr4V high-speed steel hob.