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磨削温度场很难通过解析法求解,因此,利用有限元法对磨削温度场进行数值仿真已成为一种重要的方法。在平面磨削温度的仿真研究中,主要采用三角形热源模型进行分析。介绍一种新的平面磨削热源模型(抛物线热源模型),用离散方法研究了两种热源模型,并利用两种热源模型分别对平面磨削温度进行了有限元仿真。通过对淬硬轴承钢GC r15磨削试验,采用热电偶测量了一定磨削条件下接触区的温度。仿真结果与试验对比分析表明:抛物线热源模型比三角形模型热源模型仿真结果更符合实际磨削温度。
It is difficult to solve the temperature field by analytic method. Therefore, it is an important method to simulate the temperature field by finite element method. In the plane grinding temperature simulation study, mainly uses the triangular heat source model to carry on the analysis. A new type of planar grinding heat source model (parabola heat source model) is introduced. Two heat source models are studied by discrete method, and the finite element simulation of plane grinding temperature is carried out by using two heat source models respectively. Through the grinding test of hardened bearing steel GC r15, the temperature of the contact zone under a certain grinding condition was measured by thermocouple. The simulation results and experimental results show that the parabolic heat source model is more in line with the actual grinding temperature than the triangular model heat source model.