Demagnetization method for rotating along inner circle or outer circle of heavy large bearing ring

Abstract

The invention discloses a demagnetization method for rotating along an inner circle or an outer circle of a heavy large bearing ring. The heavy large bearing ring is horizontally placed, the axial end face of the heavy large bearing ring is contacted with a bottom plate, an E-shaped iron core and a coil are reversely buckled on the bottom plate, the upper end face and two lateral surfaces of an enclosure are connected with handles respectively, the enclosure is fixed on two sides of the bottom plate through bolts, the enclosure is connected between two chute rods through fastening screws, the ends of the chute rods are connected with a framework, and a guide wheel is arranged in the framework. During working, the guide wheel rotates for a plurality of circles along the inner circle or the outer circle of the heavy large bearing ring through the handles on the enclosure, the current passes through the coil and the E-shaped iron core to generate an alternating magnetic field under the power-on condition, and the alternating magnetic field is acted on the heavy large bearing ring to form a flux loop to implement demagnetization of residual magnetism of the heavy large bearing ring. The heavy large bearing ring is kept static all the time during demagnetization so as to save hoisting and carrying and save manpower; and the method has good demagnetization effect and is simple and reliable in operation.

Description

[0001] technical field [0002] The invention belongs to the technical field of bearing demagnetization, and in particular relates to a demagnetization method that rotates along the inner or outer circle of a heavy bearing ring. [0003] Background technique [0004] Heavy large bearings are mostly used in large CNC machine tools, metallurgical mining equipment, and wind power generation equipment. Due to the large volume and size of the heavy bearing ring (the ring refers to the inner ring of the heavy bearing or the outer ring of the heavy bearing), the handling of the heavy bearing ring is very difficult. [0005] In the production and processing of heavy bearing rings, especially in the grinding process, some processing procedures often use electromagnetic chucks to absorb bearings for processing. After processing, strong residual magnetism is generated on the inner and outer rings of the bearings. The existence of residual magnetism will absorb a lot of grinding iron ...

AI Technical Summary

Problems solved by technology

[0007] There are many demagnetization methods for medium and small bearing rings. Most of the basic principles use a certain shape of iron core to wind the coil and demagnetize (or demagnetize) the bearing ring under the condition of power on. Relatively speaking, the bearing ring is demagnetized. The demagnetization method has not been reported for the large bearing rings that cannot be moved freely (movement during the demagnetization process) or the large bearing rings that can only be placed flat but cannot be erected.

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