Asymmetric connecting shaft combination bearing, grinding machine tool and grinding method

Abstract

The invention discloses a grinding machine tool of an asymmetric connecting shaft combination bearing. The grinding machine tool is characterized in that two rows of rolling columns and two rows of rolling column cages mounted on a mandrel are different in length. The invention further discloses a grinding machine tool of an asymmetric connecting shaft combination bearing. The grinding machine tool is characterized in that grinding wheels on a grinding wheel shaft are two grinding wheels spaced by a certain distance left and right; and the two grinding wheels are different in axial width. Theinvention further discloses a grinding method of the grinding machine tool of the asymmetric connecting shaft combination bearing; two grinding wheels with different widths are mounted on the grindingwheel shaft of the same machine tool; the wider grinding wheel correspondingly grinds a long rolling way on an outer ring of a bearing; the narrower grinding wheel correspondingly grinds a short rolling way on the outer ring of the bearing; and the two grinding wheels respectively grind the two rolling ways on the inner surface of the outer ring of the same bearing at the same time. The service life of the bearing is prolonged by 40% from average 2 years to 3 years.

Description

technical field [0001] The invention belongs to the technical field of composite bearings, and in particular relates to an asymmetric shaft-connecting composite bearing, a grinding machine tool and a grinding method. Background technique [0002] The combined bearings in the existing machinery industry usually have a single row of rollers and single row of steel balls (one end of the bearing shaft is a steel ball, and the other end is a roller). Its biggest defect is that it cannot carry a large load. Alternating force in the direction, and the steel ball bears the radial and axial loads respectively, so the steel ball is easy to be damaged. [0003] In the prior art, in order to improve the radial alternating force of the shaft-connecting structure combined bearing, a double-row roller and single-row steel ball-connecting shaft combined bearing based on symmetrical installation is proposed. The symmetrical installation is that the rollers installed at both ends of the beari...

AI Technical Summary

Problems solved by technology

The cooling water pump needs an engine-driven pulley to drive the water pump to run, and the drive pulley is installed at one end of the bearing shaft (mandrel) instead of both ends. Therefore, the bearing capacity of the pump at one end of the pulley is much greater than that of the bearing shaft at the non-pulley end. The bearing capacity of the water pump makes the radial force on the bearing at the load end relatively large, and it is very easy to damage. Generally, the bearing is damaged after more than one year, and the damaged place is the roller at the load end, resulting in this type of symmetrical type. The overall service life of the bearings is attenuated by an average of 40%

[0005] At present, there is still a blank in China to solve the service life of the non-uniform load combined bearings of heavy trucks

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