Damping positioning spring based on halbach permanent magnet arrays

Abstract

The invention relates to a damping positioning spring based on halbach permanent magnet arrays. The damping positioning spring comprises the first halbach permanent magnet array and the second halbach permanent magnet array. The first halbach permanent magnet array and the second halbach permanent magnet array can move relatively. The damping positioning spring further comprises an eddy current damping part. The eddy current damping part is arranged between the first halbach permanent magnet array and the second halbach permanent magnet array. By adopting the eddy current damping part, the dynamic damping characteristic of the positioning spring can be improved, the positioning spring is buffered during actions, the whole action process is smoother, and the phenomenon that the positioning spring acts with too much force is prevented.

Description

technical field [0001] The invention relates to a damping positioning spring, in particular to a damping positioning spring based on a halbach permanent magnet array. Background technique [0002] Rotary springs with positioning functions are widely used in the industrial field and in life. For example, the spring doors of buildings can be positioned in the "open" and "closed" states; the turntables for loading workpieces in automated production lines also need to be fixed in various positions. Angle switch. High positioning rigidity and rapid positioning angle switching are the basic requirements of industrial positioning rotary springs. [0003] The halbach magnetic pole array forms a single-sided high-intensity magnetic field by assembling the magnetic poles arranged by rotating the magnetic field angle. The stator and rotor composed of halbach magnetic pole arrays have higher magnetic field strength than ordinary magnetic pole arrays, so they can provide higher positio...

AI Technical Summary

Problems solved by technology

However, the positioning and rotating spring disclosed in the above-mentioned patent has no damping, so it is easy to cause vibration at the balance point and excessive centrifugal force when rotating too fast, which will bring unnecessary shaking and impact to the equipment mounted on the spring.

For example, if the rotation positioning spring of the above-mentioned patent is installed on the spring door, during the opening / closing switching process, the spring door will violently move to the balance point of opening or closing, which is obviously not conducive to the use and maintenance of the spring door

Therefore, ordinary positioning springs have the problem of excessive rotation or linear motion without buffering

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