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本文提出在试件端面点焊康铜丝的半人工热电偶法测量切削区温度场分布的新实验方法。这方法较过去国外用的埋入热电偶法、红外照相法、红外点温度计法测量切削区温度场,可以得到更符合真实切削情况的测量结果。实验得到的直角自由切削时的切削区温度分布图中,剪切区等温线和滑移线相近,切屑中最高温度在切屑与前刀面将分离处,加工表面最高温度在它与后刀面分离处,这些结果证明现在的切削热分布理论是正确的。
In this paper, a new experimental method for measuring the temperature distribution in the cutting zone by the semi-artificial thermocouple method of spot welding the constant copper wire on the specimen surface is proposed. Compared with the buried thermocouple method, infrared photography and infrared point thermometer method used in the past, this method can measure the temperature field in the cutting zone and get the measurement results more in line with the actual cutting conditions. In the cutting temperature distribution diagram of free-cutting at right angles, the isotherm and slip line in the shear zone are similar, and the highest temperature in the chip will be separated at the chip and the rake face. The highest temperature of the working surface is between its cutting edge and the flank Separation, these results prove that the current theory of cutting heat distribution is correct.