平面磨削接触长度的实验研究  

Experimental Study of the Contact Length in Surface Grinding

作　　者：周志雄[1] 周德旺[1] 毛聪[1] 杨军 

机构地区：[1]湖南大学机械与运载工程学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2009年第2期27-31,共5页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(50675063)

摘　　要：采用临界接触状态技术、热电偶技术和三向压电晶体测力仪分别在线测量了不同磨削工况下砂轮-工件的接触长度、磨削温度和磨削力.实验结果表明,实际接触长度远大于几何接触长度,且两者之比与磨削工况密切相关.讨论了磨削参数、砂轮、工件材料、磨削方式、磨削温度和磨削力等因素对接触长度的影响,分析了各自对接触长度的影响机理.随着磨削温度升高、磨削力增大,导致工件和砂轮的变形增大,进一步导致接触长度增大.The contact length, the grinding temperature, and the grinding forces were measured in-process by using Critical Contact State mode, thermocouple method, and 3-axis piezoelectric dynamometer, respectively. The experiment results have indicated that the real contact length is much greater than the geometric contact length throughout the test conditions. Furthermore, the contact length ratio is a function of grinding conditions. Factors influencing on the contact length were analyzed, including parameters of grinding, grinding wheel, workpiece materials, grinding mode, grinding force,grinding temperature and so on. The inner mechanism influencing the contact length through those factors was also discussed. With the rise of the grinding temperature and the increase of grinding force, the deformation of the grinding wheel and workpiece increased. Thus it resuited in the increment of contact length.

关 键 词：平面磨削 接触长度 磨削条件 

分 类 号：TG580[金属学及工艺—金属切削加工及机床]