Angular contact ball bearing and design method thereof

Abstract

The invention provides an angular contact ball bearing and a design method thereof. The angular contact ball bearing comprises an inner bearing ring, an outer bearing ring, a steel ball installed between the inner bearing ring and the outer bearing ring, wherein the bearing rings are respectively provided with a roller path which is matched with the steel ball in a rolling way; the shape of each roller path on a cross section passing through the axis of the corresponding bearing ring is a multi-section camber line formed by connecting at least two sections of camber lines, wherein one section of camber line corresponds to a working area of the roller path and is a working area roller path camber line, the curvature radius R of the camber line is equal to f*Dw, f is a roller path curvature coefficient, and Dw is the diameter of the steel ball; the other section of camber line is connected with one end of the working area roller path camber line and is positioned at one side of the radial direction of the steel ball, and the radius of the camber line is equal to that of the steel ball. The angular contact ball bearing provided by the invention greatly reduces radial clearance and axial clearance, reduces channel depth, increases the wall thicknesses of the inner ring and the outer ring of the bearing, avoids the radial displacement of the inner bearing ring and the outer bearing ring, and is stable in rotation.

Description

technical field [0001] The invention relates to the field of bearings, in particular to an angular contact ball bearing and a design method thereof. Background technique [0002] For traditional thrust angular contact ball bearings, especially bearings with large contact angles, such as those used in ball screw mechanisms, the cross-sectional shape of the inner and outer ring raceways is a circular arc with a certain curvature, such as figure 1 As shown, the curvature of the entire arc where the outer raceway D is located is consistent. This type of bearing has many deficiencies: First, due to its large contact angle α, radial clearance and axial clearance are large, during transportation, handling, and installation, the inner ring 4 and outer ring 2 collide severely , affecting the performance of the bearing. Second, the wall thickness d of the inner and outer ring raceways of the bearing is small, and the raceway of the bearing ring is too deep, and the deformation durin...

AI Technical Summary

Problems solved by technology

This type of bearing has many deficiencies: First, due to its large contact angle α, radial clearance and axial clearance are large, during transportation, handling, and installation, the inner ring 4 and outer ring 2 collide severely , affecting the performance of the bearing

Second, the wall thickness d of the inner and outer ring raceways of the bearing is small, and the raceway of the bearing ring is too deep, resulting in a large amount of deformation during heat treatment and grinding

Third, the radial clearance of the bearing is large, and it is easy to loose the sleeve, resulting in the loss of bearing precision

Fourth, the axial movement of the inner and outer rings of the bearing is large, and the relative deflection angle of the inner and outer rings is also large, so it is easy to shake between the inner and outer rings during vibration

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