Roller-bearing preloading adjustment structure and method

Abstract

The invention discloses a roller bearing preload adjustment structure and method. The roller bearing preload adjustment structure includes: a roller bearing capable of being installed on a transmission shaft; a bearing seat supporting the roller bearing, and the bearing seat is installed in a box On the body, and the inner ring of the bearing seat is provided with an internal thread; the bearing lock nut is provided with an external thread that engages with the internal thread on the bearing seat, and the inner side of the bearing lock nut is in contact with the roller bearing the outer ring abutment. The roller bearing preload adjustment structure disclosed in the present invention adjusts the bearing lock nut when adjusting the axial positioning of the roller bearing. Since the bearing lock nut and the bearing seat are threaded, the bearing lock nut rotates One turn, forward or backward by one pitch, so as to ensure that the clearance and preload of the roller bearing meet the technical requirements, and realize the axial position adjustment of the transmission parts such as the gear on the transmission shaft. The use of grinding parts is reduced, and the adjustment can be realized only by rotating the bearing lock nut, which has high efficiency.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a roller bearing preload adjustment structure and method. Background technique [0002] Roller bearings are one of the widely used parts in modern machinery, which has the advantages of small frictional resistance, low power loss, and easy start-up. When in use, the roller bearing needs to be positioned axially to adjust the axial position of transmission parts such as gears to ensure that the clearance and preload of the bearing meet the technical requirements; the accuracy of its axial positioning and adjustment will affect Roller bearing clearance, normal backlash and gear coloring will cause impact loads on the active and passive gears, which will aggravate the wear of the gears. It will cause the roller bearing to overheat or burn out, which directly determines the assembly quality and service life of mechanical parts. [0003] In the prior art, the clearance adjustment a...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the clearance adjustment and preload of roller bearings are usually realized by grinding and adjusting pads, and its axial fixation is mainly realized by bearing end covers. When assembling bevel gears or worms, usually It is necessary to adjust the axial position of the bevel gear or worm, which is also to adjust the axial position of the bevel gear or worm by increasing or decreasing the thickness of the spacer ring between the bearing end cover and the outer ring of the bearing. The method of axial positioning and adjustment is low in efficiency, the operating cycle of parts is prolonged, and the manufacturing cost and installation cost are high

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