基于真实磨粒分布的砂轮建模及温度场仿真

Simulation of the Grinding Temperature Based on Finite Element about Real Distribution Diamond Wheel

基于数字图像处理技术得到磨粒的粒径和坐标,采用pro/e软件零件装配方法将110个磨粒装配在陶瓷结合剂表面得到真实磨粒分布的砂轮模型;使用有限元方法对金刚石砂轮磨削高碳钢的磨削温度场进行仿真分析,得到不同砂轮线速度和磨削深度下的工件温度场分布,并确定最佳磨削参数;采用曲面响应法对磨削参数进行优化处理,发现磨削深度相比砂轮线速度对最高磨削温度影响较大,两因素对磨削最高温度的影响具有一定的交互作用,该方法对实际磨削工艺参数设计具有一定的指导意义。

Based on digital image processing technology, the particle size and coordinates of abrasives have been obtained. Real distribution diamond wheel with 110 abrasives was established by assembly technology of pro/e software. The study presents a finite element model for simulating the temperature field in the surface grinding at different grinding conditions, thus the best grinding parameters could be defined. The response surface methodology （RSM） is applied to build the comprehensive correlation of the grinding temperature with its grinding depth and wheel line speed, the results show that grinding depth has greater impact on the highest grinding temperature compared to wheel line speed and there is a certain interaction between two factors, which would make certain guiding significance for designing grinding process parameters.