汽车曲轴材料QT700-2高速精密磨削实验研究  

Experimental Study on High Speed Precision Grinding of QT700-2 for Auto Crankshaft

作　　者：郭力[1] 王艺 李东超 Guo Li;Wang Yi;Li Dongchao(College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China)

机构地区：[1]湖南大学机械与运载工程学院

出　　处：《机械科学与技术》2019年第9期1420-1428,共9页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家自然科学基金项目(51475157)资助

摘　　要：使用CBN砂轮对表面淬火汽车发动机曲轴球墨铸铁QT700-2材料进行了高速精密平面磨削实验研究,实验研究了磨削参数、材料去除率和最大未变形切削厚度与磨削力及比磨削能的关系,得到了磨削力和比磨削能的经验公式;在实验基础上结合曲轴磨削加工的要求进行了QT700-2材料高速精密磨削参数的优选,为汽车曲轴高速精密磨削奠定了良好基础。The high-speed precision surface grinding experiment of surface-hardened ductile iron QT700-2 for automotive engine crankshaft was carried out with CBN grinding wheel. The relationship between the grinding parameters, material removal rate, maximum undeformed chip thickness and the grinding force, specific grinding energy was studied. The empirical formula of grinding force and specific grinding energy is established. According to the requirements of crankshaft grinding, the high-speed precision grinding parameters of QT700-2 are optimized, which lays a foundation for high-speed precision grinding of automobile crankshaft.

关 键 词：汽车曲轴 球墨铸铁QT700-2 高速精密磨削 磨削力 

分 类 号：TG580[金属学及工艺—金属切削加工及机床]