Development of newly burnishing process for creating smooth surface with enhanced subsurface

Abstract

The newly developed method of the roller burnishing process and tip burnishing process were summarized. The burnishing process is a micro-plastic forming process, which can simultaneously achieve the smooth surface and enhanced subsurface. As a newly roller burnishing process, the authors developed the inclined roller burnishing process with driven rotary tool. The sliding effect can be obtained in addition to the rolling effect by the developed roller burnishing process, and it is possible to flexibly control the sliding direction. As a newly tip burnishing process, the authors developed the tip burnishing process using rotary spherical tool. It can be expected that the flat and free curved surfaces of the dies and molds are finished without setup of the workpiece from the preliminary machining process.