Magnetic grinding disks, device and method for finish machining of rolling surfaces of convex cylindrical rollers

Abstract

The invention discloses a grinding device and a magnetic grinding disk kit for finish machining of the rolling surfaces of ferromagnetic-material convexity cylindrical rollers. The grinding device comprises a main machine, the magnetic grinding disk kit and a roller circulating disk external system. The main machine comprises a base, stand columns, a cross beam, a sliding table, an upper tray, a lower tray, axial loading devices and a main shaft device. The roller circulating disk external system comprises a roller collecting device, a demagnetizing device, a conveying system, a sorting mechanism and a feed-in mechanism. The magnetic grinding disk kit comprises a pair of coaxial first and second grinding disks, and the front sides of the first grinding disk and the second grinding disk areoppositely arranged. The front side of the first grinding disk comprises a group of inside-sunken arc line grooves radially distributed on a first grinding disk base face (inside-sunken arc rotatingface); and the front side of the second grinding disk comprises one or more spiral grooves distributed on a second grinding disk base face (outside-protruding arc rotating face), and an annular magnetic structure is embedded in a base body of the second grinding disk. The grinding device has the capacity for finish machining of the rolling surfaces of the ferromagnetic-material convexity cylindrical rollers on a large scale.

Description

technical field [0001] The invention relates to a magnetic grinding disc kit, grinding equipment and grinding method for finishing the rolling surface of convex cylindrical rollers 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] Cylindrical roller bearings are widely used in various types of rotating machinery. As one of the important parts of cylindrical roller bearing, the shape accuracy and dimensional consistency of the rolling surface of the cylindrical roller with crown have an important influence on the performance of the bearing. At this stage, the known machining process of the crowned 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 known main process metho...

AI Technical Summary

Problems solved by technology

[0005] The above two methods of superfinishing the rolling surface of convex cylindrical 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 cylindrical rollers On the other hand, since the superfinishing equipment only processes a single (or a few) convex cylindrical rollers at the same time, the amount of material removed from the rolling surface of the processed convex cylindrical rollers is almost affected by the same batch The influence of the difference in diameter of the rolling surface of the convex cylindrical roller, so it is difficult to effectively improve the diameter dispersion of the rolling surface of the processed convex cylindrical roller by using superfinishing equipment to process the rolling surface of the convex cylindrical roller

[0016] However, due to the limitations of the structure of the grinding disc and the processing principle, the above-mentioned double-disc straight-groove grinding disc, grinding equipment and grinding method do not have the ability to finish the rolling surface of the convex cylindrical roller

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