Magnetic grinding disc, device and method for crowned tapered roller rolling surface finish machining

Abstract

The invention discloses a grinding device and magnetic grinding disc suite for ferromagnetic material crowned tapered roller rolling surface finish machining. The grinding device includes a main machine, the magnetic grinding disc suite and a roller recirculating disc external system. The main machine includes a base, upright columns, a beam, a sliding platform, an upper tray, a lower tray, an axial loading device and a main shaft device. The roller recirculating disc external system includes a roller collection device, a demagnetization device, a conveying device, a tidying mechanism and a feed-in mechanism. The magnetic grinding disc suite includes a pair of grinding discs including a first grinding disc and a second grinding disc, wherein the first grinding disc and the second grindingdisc are coaxially arranged, and the front faces of the first and second grinding discs are opposite. The front face of the first grinding disc includes a group of concave arc grooves which are radially formed in the base face (concave arc rotation face) of the first grinding disc; the front face of the second grinding disc includes one or more spiral grooves formed in the base face (convex arc rotation face) of the second grinding disc, and an annular magnetic structure is embedded in the base body of the second grinding disc. The grinding device for ferromagnetic material crowned tapered roller rolling surface finish machining has the capability of conducting finish machining on crowned tapered roller rolling surfaces of large-batch ferromagnetic materials.

Description

technical field [0001] The invention relates to a magnetic grinding disc set, grinding equipment and grinding method for finishing the rolling surface of convex tapered 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] Tapered roller bearings are widely used in various types of rotating machinery. As one of the important parts of tapered roller bearings, the convex tapered roller has an important influence on the performance of the bearing due to the shape accuracy and dimensional consistency of its rolling surface. At present, the known machining process of the rolling surface of the convex tapered roller 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 process for finishing the rolling surf...

AI Technical Summary

Problems solved by technology

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

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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