STUDIES ON THE WEAR OF HOB : Influence of Face Roughness of Tooth upon Tool Wear

Abstract

In the machining of metals, it has been believed that the smoother the rake and the flank face on tooth are, the smaller the tool wear is and the longer the tool life is. Therefore such tools as hobs, demanding high accuracy, are ground carefully. But the degree and the cause of the influence which the face roughness of tooth has upon tool wear are not made clear completely. In this paper, relations between the hob tooth roughness and the tooth wear are made sufficiently clear concerning the degree and the cause of the influence, through many fundamental cutting tests.