Rolling method for preventing bearing ring raceway from being folded

Abstract

The invention relates to a rolling method for preventing a bearing ring raceway from being folded. The method comprises the following steps that 1, an annular forge piece blank is manufactured througha pressure mechanism; 2, a pore broadening machine comprises a main roller, a mandrel and guide rollers, and the main roller, the mandrel and the guide rollers are used for machining on a roller lathe or a grinding machine, wherein the main roller is a roller which is provided with a rolling groove and has the width of 65 mm+ / -0.15 mm, the mandrel is a roller which protrudes at the waist line ofa roller body, and each guide roller is a roller with a cylindrical roller body; 3, the annular forge piece blank sleeves the mandrel, and the mandrel is pressed while the main roller rotates; 4, themandrel is closely attached to the inner wall of the annular forge piece blank to rotate and linearly moves in the radial direction to increase the diameter of the annular forge piece blank, the mainroller rolls to form the raceway on the outer diameter position of the annular forge piece blank, the cylindrical outer diameter positions of the two guide rollers are closely attached to the outer surface of the annular forge piece blank in the rolling process, the guide rollers rotate while the outer diameter of the annular forge piece blank is increased, and the annular forge piece blank is limited to the pore broadening machine. The protruding part of the rolling groove of the main roller is 3 mm wider than that required by the technology. The rolling method has the technical advantages ofbeing low in consumption, high in efficiency and high in quality.

Description

technical field [0001] The invention relates to the field of bearing manufacture, in particular to a rolling method for preventing raceways of bearing rings from folding. Background technique [0002] Bearing is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. The performance of bearing rings is crucial to the service life of bearings and the safe and reliable operation of mechanical equipment. The manufacturing and forming of bearing rings is the key to bearing manufacturing. The traditional manufacturing process of bearing rings is free forging, reaming and cutting. That is, the ring forging with rectangular cross-section is made by reaming the mandrel on the press first, and then the cross-sectional profile is processed by mechanical cutting. [0003] The traditional manufacturing process requires that the protruding...

AI Technical Summary

Problems solved by technology

However, the repeated rolling of multiple crowns will cause the folding of the raceway of the bearing ring, resulting in many disadvantages such as high energy consumption, low material utilization, low efficiency, and poor quality performance.

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