发动机气门过渡曲面砂带抛光过程接触状态分析  

Analysis on Contact State of Abrasive Belt Polishing Process for Engine Valve Surface

作　　者：阎秋生[1] 宋亚楠[1] 高伟强[1] 孔海朋[2] 

机构地区：[1]广东工业大学,广州510006 [2]怀集登云汽配股份有限公司,肇庆526400

出　　处：《中国机械工程》2010年第21期2554-2558,共5页China Mechanical Engineering

基　　金：广东省高等学校科技创新团队项目(06CXTD006);广州市科技计划资助项目(2007Z2-D9121);番禺区科技计划资助项目(2007-Z-20-1)

摘　　要：采用砂带抛光方式加工发动机气门颈部过渡曲面,分析了气门过渡曲面抛光加工的特点,建立了气门过渡曲面砂带抛光的运动模型和接触状态模型。气门过渡曲面抛光加工过程中抛光点工件线速度剧烈变化以及砂带导轮轴与工件接触状态多变,影响了加工过程的稳定性和表面加工质量。研究了气门过渡曲面与砂带弹性导轮的运动接触状态与变化规律,理论计算了抛光加工过程去除量的变化曲线,进行了气门过渡曲面加工实验,并分段测取了材料去除量,其变化趋势与理论计算曲线一致。The transitional surfaces of a engine valve neck were processed with abrasive belt polishing method and the polishing characteristics of the transitional surfaces were analyzed,then the motion model and the contact state model were established.In the polishing process,the polishing linear velocity of the transitional surfaces changed drastically and the contact state between the abrasive belt wheel and the workpiece was variational,these will affect the processing stability and the machined surface quality.The contact state and the change rule between the engine valve transitional surface and the elastic belt wheel were studied,and the variation curve of the material removal in the polishing process was calculated theoretically,which is approximately in accordance with the experimental results.

关 键 词：气门 颈部曲面 砂带抛光 动态弧长 弹性接触 

分 类 号：TG58[金属学及工艺—金属切削加工及机床] U464.134[机械工程—车辆工程]