The Prediction And Experiment Of Surface Roughness In Grinding Of Ceramics

At present, the grinding of ceramic material is the most important processing methods. The quality of ceramic parts depends on the quality of the ceramic surface mostly, surface roughness is not just a surface quail of the control parameters, but also used to monitor the process parameters. Surface quality after grinding can be pre-assessment, timely adjustment of process parameters, saving processing time and economic cost such a purpose, there is an urgent need for a more accurate and certain practical prediction model of surface roughness, in order to get rid of the traditionally relied on empirical formulas and consulting the manual to determine the passive situation of grinding parameters.Based on the mechanical model of fracture of indentation, analyze the mechanism of surface roughness of ceramic surface grinding, establishing set of the movement path equation. Then used software to simulate the processing with wheel, get surface morphology of workpieces. According to the numerical compulation determine the value of cutting simulation.On the basis of above work, cylindrical wheel grinding experiment, researched the influence of different grinding parameters on the surface roughness, and regression of experimental data, the model that we built has been verificated. Experimental results show that:the oretical value is closer to the actual value. Also indicates that:Grinding parameters on surface quality have a greater impact, the reasonable grinding parameters should get a better surface quality. Under the same condition for other parameters, as the grinding depth increasing, the value of surface roughness increases; as the wheel rotational speed increasing, the value of surface roughness decreases; As the workpiece speed increase, little change in surface roughness decreased, indicating that workpiece speed has little effect on machined surface quality.