Monitoring of Machining Error Caused by Deflection of End-Mill using Indirect Methods

Estimation of Machining Error in Ball End-Milling of Hemisphere Surface

Abstract

In recent years, machining center has been used widely in metal mold manufacturing process because high speed machining by using a small diameter end-mill has been put into practical use. However, in cutting process with an end mill that is a low rigidity, it is very important to estimate the machining error caused by deflection of tool. The purpose of this study is to establish a method of in real time estimating machining errors caused by deflection of end-mill at a cutting point. For this purpose, in this research, the growth mechanism of machining errors in Ball End-Milling of Hemisphere Surface was investigated by comparing measured deflection of tool and cutting forces with machining errors.