Magnetic grinding plates, equipment and method for finish machining of rolling surface of cylindrical roller

Abstract

The invention discloses grinding equipment and a magnetic grinding plate suite for finish machining of the rolling surface of a cylindrical roller made of a ferromagnetic material. The grinding equipment comprises a main unit, the magnetic grinding plate suite and a roller circulating plate external system, wherein the main unit comprises a base, a stand column, a cross beam, a sliding table, an upper tray, a lower tray, an axial loading device and a spindle device; the roller circulating plate external system comprises a roller collecting device, a roller demagnetizer, a roller conveyor, a roller finishing mechanism and a roller feed-in mechanism. The magnetic grinding plate suite comprises a first grinding plate and a second grinding plate which are coaxial, and the front sides of the pair of grinding plates are opposite; a group of linear grooves radially distributed on the base surface (right circular conical surface) of the first grinding plate are arranged on the front side of the first grinding plate, one or more spiral grooves distributed on the base surface (right circular conical surface) of the second grinding plate are formed on the front side of the second grinding plate, and an annular magnetic structure is inlaid in a substrate of the second grinding plate. The grinding equipment has the finish machining capacity for the rolling surfaces of a large scale of cylindrical rollers made of the ferromagnetic material.

Description

technical field [0001] The invention relates to a magnetic grinding disk set, grinding equipment and grinding method for finishing the rolling surface of cylindrical rollers of ferromagnetic materials (such as GCr15, G20CrNi2MoA, Cr4Mo4V, etc.), belonging to the technical field of precision machining of bearing rolling bodies. Background technique [0002] Cylindrical roller bearings are widely used in various types of rotating machinery. As one of the important parts of cylindrical roller bearings, the shape accuracy and dimensional consistency of the rolling surface of the cylindrical roller have an important influence on the performance of the bearing. At this stage, the known machining process of cylindrical roller rolling surface is: blank forming (turning or cold heading or rolling), rough machining (soft grinding rolling surface), heat treatment, semi-finishing (hard grinding rolling surface) and finishing . The main technological method of known cylindrical roller ...

AI Technical Summary

Problems solved by technology

[0005] The above two superfinishing methods of cylindrical roller rolling surface have the following two technical defects: on the one hand, the change of wear state of oil stone and guide roller over time during the processing is not conducive to the improvement of shape accuracy and dimensional accuracy of cylindrical roller rolling surface; On the one hand, since the superfinishing equipment only processes a single (or a few) cylindrical rollers at the same time, the amount of material removed from the rolling surface of the processed cylindrical rollers is hardly affected by the difference in diameter of the rolling surface of the same batch of cylindrical rollers. Therefore, it is difficult to effectively improve the diameter dispersion of the processed cylindrical roller rolling surface by using superfinishing equipment to process the rolling surface of cylindrical rollers

[0017] Moreover, when using the existing double-disc straight-groove grinding disc to grind cylindrical rollers, the workpiece propulsion device must continuously apply axial thrust to the processed cylindrical rollers to maintain the axial feed of the processed cylindrical rollers along the straight grooves. , the requirement for the axial propulsion capacity of the workpiece propulsion device is relatively high

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