Novel retainer of high speed crossed roller bearing

Abstract

The invention belongs to the mechanical bearing field and in particular relates to a novel retainer of a high speed crossed roller bearing. The invention is characterized in that the retainer is formed by welding three sections of steel plates with thickness being not more than 5mm, square retainer pockets are punched on each section of steel plate in equal distance before welding, the length of the square retainer pockets is 1.05 times that of the diagonal of the roller and the width thereof is 1.03 times the diameter of the roller; and the three sections of steel plates are then machined into arc shape with included angle of 120 degrees by mechanical stamping, after the roundness is qualified through detection by mechanical reshaping, the three parts are welded into a whole, and finally the welded parts undergo secondary mechanical reshaping, roundness detection and surface phosphatizing. The retainer substantially improves the stability and the working speed of the bearing on the basis of ensuring the life and the bearing capacity of the bearing.

Description

Technical field [0001] The invention belongs to the field of mechanical bearings, and in particular relates to a novel high-speed cross roller bearing cage. Background technique [0002] The crossed roller bearing is a kind of bearing that can bear not only large radial load but also large axial load and overturning moment, and has large support rigidity and high rotation accuracy. The rolling elements are cylindrical rollers, which are installed in a 1:1 cross arrangement. Most of them use nylon split cage structure, or no cage (full roller installation). Because of its compact structure and excellent performance, it is widely used in lifting and transportation machinery, excavating machinery, construction machinery and other fields. However, when this type of bearing is installed on the shaft end of a large mechanical spindle as radial support and thrust, the rolling elements often break away from the raceway and overturn due to the influence of the clearance of the nylon...

AI Technical Summary

Problems solved by technology

However, when this type of bearing is installed on the shaft end of a large mechanical spindle as a radial support and thrust, the rolling elements often fall away from the raceway and turn over due to the influence of the clearance of the nylon split cage during high-speed operation, resulting in The bearing cannot rotate normally, which greatly reduces the service life and stability of the bearing

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