Page 99 - 《应用声学》2022年第3期

第 41 卷 第 3 期 Vol. 41, No. 3
2022 年 5 月 Journal of Applied Acoustics May, 2022

⋄ 研究报告 ⋄

微型轴承内滚道超声辅助超精研磨系统的设计 ∗

唐 军 1 陈小静 1 李文星 1 徐镜福 2 王泽华 3 白林锋 3†

(1 新乡学院机电工程学院 新乡 453003)

(2 南通山口精工机电有限公司 南通 226000)
(3 河南科技学院信息工程学院 新乡 453003)
摘要：为了提高 5G 基站中微型轴承的精度和使用寿命，基于微型轴承外套圈结构特征提出一种超声振动辅
助研磨轴承外圈滚道的加工工艺。通过坐标变换及运动合成，获得了振动研磨轴承外圈滚道的工作面轨迹特
点，阐明了振动高效研磨的本质特征；之后，分别采用等效电路法和有限分析法，建立了振动系统的等效电路
图与频率方程，分析了该系统模型的固有模态与谐响应特性；最后，通过对自行研制的超声辅助研磨系统分别
进行振动特性测试和加工效果测试。结果表明，加工系统振动频率相对设计频率的误差率为 10‰，超声振幅
为 12.95 µm，加工轴承滚道的粗糙度和轮廓度较传统研磨加工分别降低了 27.17% 和 24.1%。
关键词：超声辅助磨削；微型轴承；有限元分析；轮廓微观不平度
中图法分类号: TH113.1; TB559; O242.21 文献标识码: A 文章编号: 1000-310X(2022)03-0421-08
DOI: 10.11684/j.issn.1000-310X.2022.03.012

Design of ultrasonic assisted superfinishing grinding system for

inner raceway of miniature bearing

TANG Jun 1 CHEN Xiaojing 1 LI Wenxing 1 XU Jingfu 2 WANG Zehua 3 BAI Linfeng 3

(1 Department of Mechanical and Electrical Engineering, Xinxiang University, Xinxiang 453003, China)
(2 Nantong Shankou Jinggong Electromechanical Co., Ltd., Nantong 226000, China)
(3 School of Information Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China)

Abstract: In order to improve the accuracy and service life of mini-bearing in 5G communication base station,
an ultrasonic vibration assisted traditional grinding process of the bearing outer ring raceway is proposed
based on the structural characteristics of mini-bearing outer ring. Through the coordinate transformation and
motion synthesis, the working surface trajectory characteristics of outer ring raceway of vibration grinding
bearing are obtained, and the essential characteristics of vibration high-efficiency grinding are clarified. Then,
the equivalent circuit diagram and frequency equation of the vibration system are established by using the
equivalent circuit method, and the natural mode and harmonic response characteristics of the vibration system
are analyzed by the finite element method. At last, the vibration characteristics test shows that the error rate
of vibration frequency relative to the design frequency is 10‰, and the ultrasonic amplitude is 12.95 µm, and
the processing effect test shows that the roughness and profile tolerance of the machined bearing raceway is
27.17% and 24.1% lower than that of traditional grinding.
Keywords: Ultrasonic vibration grinding; Mini-bearing; Finite element analysis; Profile micro unevenness

2021-04-25 收稿; 2021-05-31 定稿
河南省高等学校重点科研项目 (21A460022), 河南省科技攻关项目 (202102210113)
∗
作者简介: 唐军 (1982– ), 男, 河南新乡人, 博士, 副教授, 研究方向: 精密超精密加工技术及装备。
† 通信作者 E-mail: 714655520@qq.com