Ultraprecision Machining of Hard Material with PCD Micro Milling Tool

Abstract

Molding dies of hard and brittle materials such as WC were usually ground by resinoid bonded diamond wheel. Recently, cutting process needs to be short and easy by applying diamond cutting. In this study, a new micro milling tool of PCD was developed and a feasibility study of a precision micro array mold cutting was carried out. From the experimental results, mirror surface and high precision form accuracy were obtained. It is clarified that precision cutting of WC dies can be done with the developed PCD milling tool.