双盘直槽研磨圆柱滚子稳定自转条件分析与试验  

Analysis and Experiments of Stable Rotation Conditions for Cylindrical Rollers in Double Disc Straight Groove Lapping

作　　者：何庆顺 何春雷 陈光[1] 刘伟峰 邓晓帆[1] 任成祖[1] HE Qingshun;HE Chunlei;CHEN Guang;LIU Weifeng;DENG Xiaofan;REN Chengzu(Tianjin Key Laboratory of Equipment Design and Manufacturing Technology,Tianjin University,Tianjin,300350)

机构地区：[1]天津大学天津市装备设计与制造技术重点实验室,天津300350

出　　处：《中国机械工程》2021年第21期2625-2634,共10页China Mechanical Engineering

基　　金：国家重点研发计划(2018YFB2000401);国家自然科学基金(51935008);博士后创新人才支持计划(BX20200234)。

摘　　要：为解决双盘直槽研磨方法中圆柱滚子稳定自转问题,对研磨状态下的圆柱滚子的自转运动进行理论分析,计算获得滚子实现稳定自转运动的条件。设计了一种电磁研磨盘,引入电磁力以增大驱动滚子自转的摩擦力矩,改善滚子的自转条件。对电磁研磨盘的磁路进行参数化设计和电磁仿真优化,并制作出电磁研磨盘实物,仿真分析和试验结果都表明所设计的电磁研磨盘能够对圆柱滚子提供足够大且分布均匀的电磁吸力。在自制的试验台架上对φ12mm×18mm圆柱滚子进行研磨试验,验证了自转条件的正确性。经过60min研磨,圆柱滚子的圆度误差由2.55μm减小到0.63μm,形状精度得到显著提升。To solve the stable rotation problems of cylindrical rollers in double disc straight groove lapping processes,theoretical analysis on rotating motions of cylindrical rollers in lapping state was carried out,and the stable rotation conditions were calculated.A kind of electromagnetic lapping disc was designed to increase frictional driving torques of rotation by applying electromagnetic forces.The stable rotation conditions were also improved.The parametric design,electromagnetic simulation and optimization were performed on the electromagnetic path of electromagnetic lapping disc.An electromagnetic lapping disc was fabricated.Both of simulation and experimental results show that the electromagnetic lapping disc may provide enough and uniform electromagnetic forces on cylindrical rollers.Lapping experiments were performed with φ12 mm×18 mm cylindrical roller on the homemade experimental platform,and the correctness of the rotation conditions was verified.After 60 min lapping,the roundness errors of cylindrical rollers are obviously decreased from 2.55μm to 0.63μm.The shape accuracy is also improved obviously.

关 键 词：圆柱滚子 双盘直槽研磨 稳定自转条件 电磁研磨盘 

分 类 号：TH161[机械工程—机械制造及自动化] TG580.1[金属学及工艺—金属切削加工及机床]