Roller bearing with adjustable rotating center

Abstract

The invention relates to the technical field of bearings, in particular to a roller bearing with an adjustable rotating center. The roller bearing comprises an outer ring, an inner ring and a rolling body arranged between the outer ring and the inner ring, wherein an eccentric shaft is nested in the inner ring; an eccentric through hole is formed in the eccentric shaft; a central shaft of the eccentric through hole and a central shaft of the inner ring are eccentrically arranged; and an eccentric adjusting hole is formed in the eccentric position, opposite to the center of the inner ring, of the end surface of the eccentric shaft. According to the roller bearing with the adjustable rotating center provided by the invention, the rotating center of the roller bearing can be conveniently, rapidly and accurately adjusted by arranging the eccentric adjusting hole, so that the situation that the distance between the outer ring of the bearing and a guide rail is too large or too small is effectively prevented, and normal and smooth operation of the roller bearing on the guide rail is guaranteed.

Description

【Technical field】 [0001] The present application relates to the technical field of bearings, in particular to a roller bearing with an adjustable center of rotation. 【Background technique】 [0002] In the roller guide rail system, due to the cumulative error of assembly, the roller bearing cannot be in good contact with the track surface during assembly, leaving a gap or interference. Therefore, concentric roller bearings and eccentric roller bearings are usually used together: concentric roller bearings play a role in positioning The role of the benchmark, the eccentric roller bearing plays the role of preload adjustment. Among them, the eccentric roller bearing can achieve the purpose of preload adjustment by adjusting the position of the bearing center of the eccentric roller bearing, but the existing adjustment method is generally by manually rotating the position of the bearing mounting screw relative to the mounting hole, which is troublesome and inaccurate. In additi...

AI Technical Summary

Problems solved by technology

Among them, the eccentric roller bearing can achieve the purpose of preload adjustment by adjusting the position of the bearing center of the eccentric roller bearing, but the existing adjustment method is generally by manually rotating the position of the bearing mounting screw relative to the mounting hole, which is troublesome and inaccurate.

In addition, the existing roller bearings generally have a two-point contact structure, which is not capable of bearing radial and axial bidirectional loads, and the work is unstable

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