Study on cutting trace shape control of machined surface by radius end mill with five-axis controlled machining center

Abstract

There have been many reports dealing with the motion accuracy of a five-axis controlled machining center. However, there have been few reports dealing with a synchronous accuracy between the spindle rotation and the feed driving motion. In the present report, we propose a novel method to control the cutting trace shape on machined surface in radius end milling, focusing on high repeatability of period in a fixed cycle feed motion to keep a synchronous motion between the spindle rotation and the feed driving motion. Moreover, we attempt to estimate the quality of machined surface with a proposed method for radius end milling of hardened die steel. As a result, a proposed machining method is found to be effective to improve the machined surface quality for a finishing process.