Rotary demagnetization method for medium and large bearing ring under erection state

Abstract

The invention relates to a rotary demagnetization device, and provides a rotary demagnetization method for a medium and large bearing ring under an erection state, wherein the size range of the medium and large bearing ring (4) is 300-1000mm, and the maximum width of the medium and large bearing ring is set as D. The rotary demagnetization device comprises a demagnetization box (1), an operation face plate (2) and driving guide rollers (3). The bearing ring to be demagnetized is erected and tightly attached beside the operation face plate and located on the two driving guide rollers, the demagnetization box is started to produce a magnetic field, frictional force generated by the two driving guide rollers on the bearing ring (4) is higher than magnetic attraction force generated by the magnetic field, the demagnetized bearing ring is tightly attached to the operation face plate under rotation of the two driving guide rollers in the same direction to rotate at a constant speed in the reverse direction, and the bearing ring achieves uniform demagnetization in the rotary demagnetization device because of the constant-speed rotation in the reverse direction. The rotary demagnetization device is high in universality, does not occupy large workplaces, widens the demagnetization range and greatly improves demagnetization efficiency.

Description

technical field [0001] The invention belongs to the technical field of bearing demagnetization, and in particular relates to a rotating demagnetization method for medium and large bearing rings in a standing state. Background technique [0002] The bearing ring includes the inner ring or the outer ring. Whether it is the grinding of the two end faces of the bearing ring or the grinding of its raceway, it is ground by means of electromagnetic centerless fixture. The bearing ring after processing With a certain amount of residual magnetism, the residual magnetism needs to be demagnetized, otherwise it will affect the detection of the bearing ring and the processing of the next process, and directly affect the product quality of the bearing ring. [0003] For large bearing rings with a diameter of more than 1000mm, put them upright on the long plate-shaped demagnetization device and roll them along the length direction of the long plate-shaped workbench under the action of exte...

AI Technical Summary

Problems solved by technology

[0005] For medium and large bearing rings with a diameter of 300 to 1000 mm, the above two demagnetization devices are not suitable, that is to say, medium and large bearing rings in the above size range cannot be demagnetized on the desktop flat demagnetization device, but in the Demagnetization on the above-mentioned long plate-shaped demagnetization device will cause a lot of waste. Up to now, there is no suitable demagnetization device for medium and large bearing rings.

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