A high-speed double-layer nested bearing with electromagnetic speed control

Abstract

The invention discloses an electromagnetic speed control high-speed dual-layer nested bearing. The electromagnetic speed control high-speed dual-layer nested bearing comprises a first bearing and a second bearing nested in an inner ring of the first bearing, wherein the nested contact part of the inner ring of the first bearing and an outer ring of the second bearing is fixedly and symmetrically provided with an iron-core-free hollow mouse cage; the contact parts of the hollow mouse cage with the first bearing and the second bearing keep the electrical insulation state; first permanent magnet groups are symmetrically and fixedly installed at one side of the outer ring of the first bearing; second permanent magnet groups are symmetrically and fixedly installed at one side of the inner ring of the second bearing; the first permanent magnet groups and the second permanent magnet groups are ranked in a mode of heteropole attraction; a magnetic induction line can penetrate through the hollow mouse cage along the diameter direction of the bearing ring. The electromagnetic speed control high-speed dual-layer nested bearing has the beneficial effects that the electromagnetic speed control high-speed dual-layer nested bearing is provided, and an electromagnetic control technique is adopted for overcoming the problem that the rotation speed of a bearing mixed middle ring is instable and is not controlled, and the service life and the operation stability of the bearing can be ensured effectively and controllably.

Description

technical field [0001] The invention relates to a bearing, in particular to a high-speed double-layer nested bearing with electromagnetic speed control. Background technique [0002] The current high-speed ball bearings generally adopt a single-layer structure of deep groove balls. In the occasions that require high-speed operation, such as machine tool spindles and other fields, the structure of double-layer nested bearings (such as figure 1 ), the basic principle is: the shaft end of the spindle motor adopts two bearings, that is, the nested structure of bearing 1 and bearing 2, and the inner ring 201 of bearing 2 is assumed to be the mixed middle ring of bearing 1 and bearing 2 (bearing 2 Outer ring 202 and bearing 1 inner ring 101) rotate at speed V1, then the mixed middle ring will also rotate at the speed of V2 relative to the outer ring 102 of bearing 1, and the outer ring 102 of bearing 1 is fixed on the end cover, which can It can be seen that the actual speed of t...

AI Technical Summary

Problems solved by technology

[0003] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a high-speed double-layer nested bearing with electromagnetic control, which uses electromagnetic control technology to overcome the problem of unstable and uncontrolled rotation speed of the mixed ring in the bearing, effectively Controllable to ensure the life and work stability of the bearing at high speed

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