摘要
基于砂轮表面磨粒数理统计方法,建立了单颗磨粒模型,运用DEFORM-3D有限元软件进行了GCr15轴承钢磨削仿真。通过仿真分析表明:切向磨削力和法向磨削力随砂轮线速度的增大而减小,随磨削深度的增大而增大,法向磨削力与切向磨削力之比约为5-10。进行了GCr15轴承钢高速磨削试验,通过仿真与试验数据对比,分析了单颗磨粒磨削力与砂轮总磨削力之间的耦合关系,验证了单颗磨粒有限元仿真的准确性,也说明了砂轮表面磨粒数理统计方法的可靠性,为加工前磨削力的预测提供了理论依据。
Based on the mathematical statistics methods of grinding wheel surface grains,a single grain model was builded. By using DEFORM- 3D finite element software,the simulation of GCr15 bearing steel was conducted and showed that the tangential grinding force and the normal grinding force reduced with the increase of the speed of the grinding wheel,but increased with the increase of the grinding depth. The ratio of the tangential grinding force and the normal grinding force is about 5- 10. Then the grinding experiment of GCr15 bearing steel was made. Compared with the simulation,the coupling relationship between the single grain grinding force and the grinding force of the grinding wheel was analyzed,which verified the accuracy of single grain finite element simulation,as well as proved the reliability of the mathematical statistics methods of grinding wheel surface grains. All of these could provides theoretical basis for the prediction of grinding force before processing.
出处
《工具技术》
北大核心
2016年第4期17-23,共7页
Tool Engineering
基金
国家自然科学基金(51275100)
广州市科技计划项目(201508010051)
