Machining method for spherical surface roller pin free of edge angles

Abstract

The invention discloses a machining method for a spherical surface roller pin free of edge angles. The method includes the following steps of A roll polishing, B heat treating and C modified line machining and further includes the following step of edge angle removal machining, wherein after roll polishing in the step A, an arc lantern-shaped rolling barrel is manufactured according to the size and the shape of a roller pin, the rolling barrel is horizontally arranged on a support with an adjustable dip angle, the roller pin after roll polishing is thrown into a barrel body of the rolling barrel through a throwing opening, the two ends of a roller pin blank make contact with the barrel wall in the barrel body, the rolling barrel rotates in the circumferential direction around the axis of the barrel body through an external power source, and in the rotating process, the roller pin blank is grinded in a 360-degree rolling-polishing mode along the barrel wall in the barrel body, so that the edge angles at the two ends of the roller pin are machined to be arc angles. The method solves the problem that the edge angles exist in the connecting positions of the two ends of the outer side wall and the semicircular ends of the roller pin, and the roughness of the semicircular ends at the two ends of the roller pin is small.

Description

technical field [0001] The invention relates to a method for manufacturing a needle roller for a bearing, in particular to a method for processing a spherical needle roller without corners. Background technique [0002] The needle rollers are generally installed between the outer ring and the inner ring of the needle roller bearings. During operation, the rolling of the needle rollers is used to reduce the frictional resistance between the two relative moving parts. In the prior art, one type of bearing needle roller has semicircular ends on both ends. When this kind of bearing needle roller is used in practical applications, it mainly relies on the rolling of the needle roller to reduce the friction between the two relative moving parts. purpose of resistance. [0003] At present, there is a method to solve the stress concentration at both ends of the needle roller. A. Rolling and polishing: select GCr15 steel to form a rolling needle blank after cutting, and then use a ba...

AI Technical Summary

Problems solved by technology

[0009] Aiming at the defects existing in the prior art, the present invention provides a non-angular spherical needle roller processing method which solves the problem of edges and corners at the connection between the two ends of the outer wall of the needle roller and the semicircular end, and the roughness of the semicircular ends at both ends of the needle roller is small.

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