Abstract:

In order to design heat pipe tools with rational structure,first,a performance test system of heat pipe was developed to simulate the working conditions of heat pipe in the lathe tool. Next,the operation parameters of the heat pipe were optimized by means of orthogonal test. Then,based on the optimization results,three heat pipe tools with different installation forms,including the embedding,the lateral compression and the slot embedding, were designed and fabricated. Finally,an experiment in dry turning of 45# steel was carried out to quantitatively evaluate the heat dissipation performance of the tools. The results of heat dissipation performance test demonstrate that,when the heating length of the evaporator section is 18mm,the cooling length of the condenser section is 20mm,the temperature of recycling water is 75℃ and the bending angle of the heat pipe is 5°,both the round and the flat heat pipes are of the optimum heat transfer performance. In addition,the calorimetric experiment in cutting process show that the heat pipe tool with embedding form possesses the highest heat transfer efficiency,while that with lateral compression form possesses the lowest one.

Key words: heat pipe, lathe tool, cutting, heat dissipation