发动机气门过渡曲面砂带抛光过程接触状态分析

In this paper, the transitional surface of the engine valve neck was processed with the abrasive belt polishing method and the polishing characteristics of the transitional surface are analyzed, then the movement model and the contact state model are established. In the polishing process, the polishing linear velocity of the transitional surface changes drastically and the contact state between the abrasive belt wheel and the workpiece is variational, these will affect the processing stability and the machined surface quality. The contact state and the change rule between the transitional surface of the engine valve and the elastic belt wheel are researched, and the variation curve of the material removal in the polishing process is calculated theoretically, which is approximately in accordance with the experimental results.