微型三点接触球轴承双半内圈沟道加工工艺改进  

Improvement on Processing Technology for Two-Piece Inner Ring Raceway of Miniature Three-Point Contact Ball Bearings

作　　者：杜晓宇 邓四二[1] 张旭[2,3,4] 崔静伟[2,3,4] DU Xiaoyu;DENG Si′er;ZHANG Xu;CUI Jingwei(Henan University of Science and Technology,Luoyang 471003,China;Luoyang Bearing Research Institute Co.,Ltd.,Luoyang 471039,China;China International Science and Technology Cooperation Base for Digitization Design of High Performance Bearing,Luoyang 471039,China;Henan Key Laboratory of High Performance Bearing Technology,Luoyang 471039,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]洛阳轴承研究所有限公司,河南洛阳471039 [3]高性能轴承数字化设计国家国际科技合作基地,河南洛阳471039 [4]河南省高性能轴承技术重点实验室,河南洛阳471039

出　　处：《轴承》2021年第10期38-40,共3页Bearing

摘　　要：采用“整体加工→剖切→粘接加工”的工艺加工微型三点接触球轴承双半内圈时,沟道在粗磨、精磨及超精加工过程中易受到不均匀作用力而出现内圈粘接处开裂或沟形误差超差,产生大量废品。提出设计辅助工装,并优化磨削、超精工艺参数以降低切削力的改进措施。改进工艺加工的轴承两内圈沟曲率中心偏差合格率大幅提高,且数值范围较为集中。When the two-piece inner rings of miniature three-point contact ball bearings are processed by“integral processing→sectioning→bonding processing”,the bonding joint of inner rings are easy to crack or raceway shape error is out of tolerance due to uneven force during processes of rough grinding,fine grinding and superfinishing,resulting in a large number of waste products.The improvement measures of designing auxiliary tooling and optimizing grinding and superfinishing process parameters to reduce cutting force are put forward.The qualified rate of curvature center deviation of two inner ring raceway of the bearings processed by improved processes is greatly improved,and the numerical range is relatively concentrated.

关 键 词：滚动轴承 三点接触球轴承 磨削 超精加工 工艺参数 

分 类 号：TH133.331[机械工程—机械制造及自动化] TK416.1[动力工程及工程热物理—动力机械及工程]