In order to address the issues of magnetic suction during the assembly process of external rotor permanent magnet motors(including EC,DC external rotor brushless DC motors,and permanent magnet synchronous motors)and bearing creep during motor operation,this paper analyzes the effects of axial magnetic pulling force and unilateral mag-netic pulling force.From a practical perspective,two types of design structural forms and corresponding assembly fix-tures for interference fit between shafts and bearings,as well as mass production implementation process methods,are proposed to provide useful ideas for improving the assembly reliability of external rotor permanent magnet motors.
关键词
外转子永磁电机/磁力干扰/轴承蠕变/过盈装配/公差环/工装工艺
Key words
external rotor permanent magnet motor/magnetic interference/bearing creep/interference fit as-sembly/tolerance ring/tooling process
维普
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