V-shaped demagnetizing device for macrotype bearing ring odd magnetic pole unit and demagnetizing method

Abstract

The invention discloses a fork demagnetizer of single-pole units of large size bearing rings and a demagnetizing method. The device comprises the single-pole units, a guide pulley assembly A, a guide pulley assembly B and guide pulleys. The single-pole units are placed on the guide pulleys, and the guide pulley assembly A and the guide pulley assembly B are respectively arranged on both ends of the single-pole unit. The demagnetizing method comprises switching on power, current flowing through a coil A and a coil B of the single-pole unit, lines of magnetic force forming a closed magnetic circuit via iron cores and magnet gaps to generate strong magnetic field between two poles of a fork magnetic core, operating demagnetizing bearing rings supported by the synchronously operated guide pulley assembly A and guide pulley assembly B oppositely to the pulley assembly A and the guide pulley assembly B to push magnetic cells moving along a guide rail, simultaneously walls of the bearing rings penetrating through the two poles of a fork magnetic unit, disorganizing oriented magnetic domain of the large size bearing rings after each portion penetrating through the strongly alternative magnetic field between the two poles and then removing magnetism. The invention has the advantages of high demagnetizing quality, high work efficiency and low work intensity.

Description

Technical field: [0001] The invention belongs to the technical field of bearings, and in particular relates to a demagnetization device and a demagnetization method for a single magnetic pole unit of a large bearing ring. Background technique: [0002] In the process of producing large bearings, whether it is the end face grinding of large bearing rings or the grinding of the outer and inner grooves or the inner diameter grinding, the grinding process related to electromagnetic is often used: for example, in the surface grinding The ring is attracted to the magnetic disk, and the strong magnetic force attracts the bearing ring, and then it is processed in this state. After grinding, the residual magnetism of the ferrule is very large. If the residual magnetism is not removed, the residual magnetism on the ferrule will attract a lot of iron filings, which will have a direct impact on the processing accuracy of the next process, and will also make the instrument detection valu...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned method for demagnetizing large bearing rings has extremely low efficiency, consumes a lot of manpower, physical strength and time, and has poor demagnetization effect

Therefore, the phenomenon of local leakage or abandonment of demagnetization of large bearing rings often occurs, which will greatly reduce the quality and life of the bearing

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