The Effect of an Embedded Heat Pipe in a Cutting Tool on Temperature and Wear

This paper presents the fundamental understanding of the effect of an embedded heat pipe in a cutting tool on temperature and wear in machining. In particular, the technique can effectively minimize pollution and contamination of the environment caused by cutting fluids and the health problems of skin exposure and particulate inhalation in manufacturing. The temperature of a tool plays an important role in thermal distortion and the machined part’s dimensional accuracy, as well as in tool life in machining. A new embedded heat pipe technology has been developed to effectively remove the heat generated at the tool-chip interface in machining, thereby reduce tool wear and prolong tool life. Experiments were carried out to characterize the temperature distributions when performing turning experiments using a cutting tool installed with an embedded heat pipe. The ANSYS simulations show that the temperature near the cutting edge drops significantly with an embedded heat pipe during machining. Temperature measurements at several locations on the cutting tool insert agree with the simulation results both with and without the heat pipe. The effect of the heat pipe on reducing the cutting tool temperature was further supported by the observations of cutting tool material color, chip color, and chip radius of curvature.