氧化锆陶瓷磨削机理有限元仿真与实验

目的研究氧化锆陶瓷材料在高速磨削条件下的去除机理，优化磨削参数，提高磨削效率．方法将单颗金刚石磨粒简化成圆锥形和三棱柱形两种形状，进行氧化锆陶瓷的磨削仿真，分析了磨削深度和磨削速度两个因素对磨削力和磨削表面形貌的影响．通过对氧化锆陶瓷进行内圆磨削加工实验，并获取相应的磨削力数据与表面形貌图像，对比仿真结果，证明了理论分析的正确性．结果随着磨削深度从1μm到9μm，磨削速度从23．0m／s到74．9m／s的增大，单颗磨粒磨削力呈单调递增的趋势，工件表面质量逐渐恶化．结论提高砂轮转速，降低磨削深度，有助于减小磨削力，提高磨削表面质量；在磨削深度、磨削速度两个因素当中，磨削速度对单颗磨粒磨削力及磨削表面质量的影响更大．

Simulation and Experiment Research on ZrO2 Ceramic Grinding Mechanism

In order to study the grinding mechanism of zirconia ceramic, optimize grinding parameters and increase grinding efficiency under the condition of high speed, single diamond abrasive grain is simplified into the cone and the triangular prism to simulate the grinding process. This paper analysed the effect of grinding depth and grinding speed on grinding force and surface morphology. Through the grinding experiment that the inner surface of the zirconia ceramic was processed, the corresponding grinding force data and surface topography images were obtained. It proves the correctness of the theoretical analysis by comparing the simulation results and the experimental results. With the increase of the grinding depth from 1 μ to 9 μ or the increase of the grinding speed from 23.0m/s to 74.9m/s, the grinding force of single diamond abrasive grain shows the monotonically increasing trend, and the same time the workpiece surface quality is gradually deteriorated. It proves that increasing wheel speed or lowering grinding depth helps reduce grinding force and improves the quality of grinding surface. Between grinding depth and grinding speed, the latter has a greater impact on single abrasive grinding force and the quality of grinding surface.