Identification of Heat Transfer Coefficient on Machine Tool Surface by Inverse Analysis

Abstract

One of major problems in testing or evaluating precisely the thermal behavior of a machine tool is the difficulty of identification of heat transfer coefficient on the surface by conventional method. This paper presents a new method based on the inverse analysis to identify the distribution of heat transfer coefficient. The present method requires only the temperature change measured at several selected points on the machine tool surface. The temperature change is obtained easily during a certain period of warming-up operation of the machine tool. The experimental result obtained with a head stock model verifies the effectiveness of the present method.