E02 A study on driven type rotary cutting of finish turning of carburized hardened steel : Effect of rotary cutting in high efficiency

Abstract

Recently, cutting has replaced grinding in the finish processing of hardened steel. However, tool wear is a major problem when achieving high-efficiency using the high-speed cutting conditions and high feed rate conditions more than a recommendation condition. In this study, driven type rotary cutting of the finish turning of carburized hardened steel is performed, and its applicability and high-efficiency cutting performance are investigated. As a result, flaking occurs at the cutting edge at a cutting length of 0.2km using non-rotating tool. 0n the other hand, even if the cutting length amounts to 5.0km, the tool wear width without flaking is small in the rotating tool. Moreover, high-efficiency rotary cutting is possible at a feed rate of 0.3mm/rev from the viewpoints of wear resistance and surface roughness