Magnetic grinding disc, equipment and method for tapered roller rolling surface finishing

Abstract

The invention discloses grinding equipment and a magnetic grinding disc kit for tapered roller rolling surface finishing of ferromagnetic materials. The grinding equipment comprises a main body, the magnetic grinding disc kit and a roller circulation disc outer system. The main body includes a base, a column, a beam, a slide table, an upper tray, a lower tray, an axial loading device and a spindledevice. The roller circulation disc outer system includes a roller collecting device, a roller demagnetizing device, a roller conveying system, a roller finishing mechanism and a roller feeding mechanism. The magnetic grinding disc kit includes a pair of coaxial first and second grinding discs of which the front surfaces are disposed opposite to each other. The front surface of the first grindingdisc includes a set of linear grooves radially distributed on a base surface (positive conical surface) of the first grinding disc, the front surface of the second grinding disc includes one or morespiral grooves distributed in the base surface (positive conical surface) of the second grinding disc, and a ring-shaped magnetic structure is embedded inside a base body. The grinding equipment has the finishing ability of multitudinous ferromagnetic material tapered roller rolling surfaces.

Description

technical field [0001] The invention relates to a magnetic grinding disc kit, grinding equipment and grinding method for finishing tapered roller rolling surfaces of ferromagnetic materials (such as GCr15, G20CrNi2MoA, Cr4Mo4V, etc.), and belongs to the technical field of precision machining of bearing rolling bodies. Background technique [0002] Tapered roller bearings are widely used in various types of rotating machinery. As one of the important parts of the tapered roller bearing, the shape accuracy and dimensional consistency of its rolling surface have an important influence on the performance of the bearing. At this stage, the known processing process of tapered 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 known main process for finishing the rolling surfaces of tapered rollers is superfinishing. [...

AI Technical Summary

Problems solved by technology

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

Material removal on the roller surface during machining is uncertain, and this method cannot improve the dimensional accuracy and diameter dispersion of the roller

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