Cross roller bearing and retainer thereof

Abstract

The invention discloses a cross roller bearing and a retainer thereof. The retainer is suitable to be assembled between inner and outer rings and contains cylindrical rollers; the outer ring is provided with an outer rolling track; the outer rolling track comprises a first outer track surface and a second outer track surface forming a right angle; the retainer is an annular body and comprises a first containing unit and a second containing unit arranged at an interval; the first and second containing units are provided with isolation parts to isolate the end surface of the roller from direct contact with the first and second outer track surfaces of the outer ring, prevent the abrasion of the first and second outer track surfaces caused by the roller and consequent scratch and maintain smooth operation and service life of the roller bearing; moreover, the rollers can be contained and assembled through the first and second containing units, thus the assembly of the cross roller bearing is quicker, and the production benefits are increased.

Description

technical field [0001] The invention relates to a cross roller bearing, in particular to a cross roller bearing and a cage thereof. Background technique [0002] Roller bearings are widely used in occasions that require high rigidity and high rotation accuracy but require small bearing size (such as industrial robots, machine tools, precision measuring equipment, and medical equipment, etc.) Roller bearings are mainly composed of an inner ring, A set of outer rings arranged on the inner ring, a plurality of rollers interlaced with each other and rotatably arranged between the inner and outer rings, and arranged between each of the rollers and used to isolate the rollers Composed of spacers that prevent mutual friction. Since the rolling tracks of the inner and outer rings are in line contact with the rollers, when the roller bearing is loaded, it has a larger load-bearing area and less elastic deformation. At the same time, it bears radial, Combined loads such as axial loa...

AI Technical Summary

Problems solved by technology

[0003] Although the spacer can separate the two rollers to prevent the rollers from rubbing against each other, it cannot isolate the contact between the end faces of the rollers and the rolling track surface of the outer ring. The friction of the rolling track surface of the outer ring produces scratches, which causes the roller bearing to generate large vibration noise, unsmooth operation, and low service life during operation; its state is as follows: Figure 13 and Figure 14 As shown, it shows the state of scratches 911 on the rolling track surface 91 of one of the outer rings 90 in the roller bearing with split outer ring. Figure 14 Show correspondence Figure 13 A photo showing the state of scratches 911 on the rolling track surface 91 of the outer ring 90

[0004] In addition, when the roller bearing is assembled, the spacers need to be placed between the two rollers one by one, highlighting the time-consuming defect of assembly

Images