Abstract
In gear hobbing, High Speed Steel (HSS) hob is one of the most useful tools. However, the improvement of productivity by HSS gear hobbing is reaching critical limit, because the hardness of HSS hob decreases rapidly when in the high temperature of 600℃ or more. Therefore, it is important that improving productivity for gear manufacturing is increased by using carbide tipped hob with heatproof. However, damage might occur in the tool at the early stage when the cutting condition is mistaken, and the tool life be shortened extremely. Therefore, when carbide tipped hob is applied for gear cutting, it is important to understand the characteristic of it enough, and to understand the condition for the tool life. In this study, the factor of the damage of the carbide tool is systematically examined.
