摆动式展成球面磨削表面的纹理分析

基于空间运动学研究了磨削过程中磨粒在工件上的空间运动轨迹，建立了磨粒运动轨迹的数学模型，讨论了工艺参数对磨削纹理的影响，提出磨削纹理密度的概念并用于评价球面磨削纹理，分析了磨削纹理对密封面润滑和密封性能的影响，给出了有利于提高球阀性能的磨削纹理形状及磨削工艺参数控制方法，同时，对所建立的模型进行了实验验证.结果表明，磨削纹理的形状和分布取决于磨削工艺参数和系统结构参数，调整工艺参数和结构参数，可以改善球形工件的表面质量及其密封面的润滑和密封性能.

Sphere Generation Grinding Based Spherical Surface Marks Analysis

A grain trajectory model was developed based on spatial motion analysis. The relationships between grinding marks and various process parameters were discussed and the concept of grinding marks density was put forward in order to evaluate the marks. The influence of grinding marks on the lubricating and sealing performance was analyzed, and the favorable marks together with the parameter control methods were discussed. Optimizing parameters were presented based on the analysis. The model was validated by the experiments. The results show that the shape and distribution of grinding marks are determined by both the process parameters and structural parameters. For higher surface quality and favorable grinding marks which benefit lubricating and sealing, the parameters and system parameters need to be reasonably selected.