关键词: 关节轴承, 滚铆工具, 参数优化, 正交试验

Abstract:  Based on the requirements of aviation standards, a new type of roller swaging tool was studied to achieve pure rolling of the rollers, good surface quality, and to reduce the influences on the starting torque of the bearings. Based on the theorem for the composition of velocities, the conditions for the roller to achieve pure rolling were studied, and a roller with an inner cone roller was designed. The swaging of MS14101-9 bearing was taken as an example, the effects of two kinds of rollers on the fit between the outer ring and the housing, the equivalent stress of the inner and outer rings of the bearing, the push-out load, and the surface quality of the swaging groove were studied. Finally, with the constraints of the range of the starting torque of the bearings specified in aviation standard, the parameters of swaging load and roller revolution speed were optimized by virtual orthogonal tests with the displacement changes of the outer spherical surface of the inner ring as an optimization index. The results show that a good process quality may be achieved with tools with inner cone rollers, when the swaging load is as 4000 N and the roller revolution speed is as 200 r/min, which may ensure that the process quality index and the starting torque of the bearing after the swaging are within the standard requirements.

Key words: spherical plain bearing, roller swaging tool, parameter optimization, orthogonal test