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

doi:10.3969/j.issn.1004-132X.2021.21.012

Abstract

Abstract: 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 12 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 2.55 μm to 0.63 μm. The shape accuracy is also improved obviously.

Key words: cylindrical roller, double disc straight groove lapping, stable rotation condition, electromagnetic lapping disc

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12 mm×18 mm圆柱滚子进行研磨试验，验证了自转条件的正确性。经过60 min研磨，圆柱滚子的圆度误差由2.55 μm减小到0.63 μm，形状精度得到显著提升。

关键词: 圆柱滚子, 双盘直槽研磨, 稳定自转条件, 电磁研磨盘

CLC Number:

HE Qingshun, HE Chunlei, CHEN Guang, LIU Weifeng, DENG Xiaofan, REN Chengzu. Analysis and Experiments of Stable Rotation Conditions for Cylindrical Rollers in Double Disc Straight Groove Lapping[J]. China Mechanical Engineering, 2021, 32(21): 2625-2634.

何庆顺, 何春雷, 陈光, 刘伟峰, 邓晓帆, 任成祖. 双盘直槽研磨圆柱滚子稳定自转条件分析与试验[J]. 中国机械工程, 2021, 32(21): 2625-2634.

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