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An embedded magnetic lead screw with reduced output thrust pulsation

A magnetic lead screw, embedded technology, applied in the direction of electric components, electromechanical transmission devices, electrical components, etc., can solve the problems of large thrust pulsation of the magnetic lead screw, difficult processing of the permanent magnet of the magnetic lead screw, etc. Reduce process complexity and ensure the effect of thrust output

Active Publication Date: 2017-06-27
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of the difficulty in processing the permanent magnet of the magnetic lead screw and the large thrust pulsation of the permanent magnet segmented magnetic lead screw, and propose a magnetic lead screw that is simple, effective, and easy to implement in engineering

Method used

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  • An embedded magnetic lead screw with reduced output thrust pulsation
  • An embedded magnetic lead screw with reduced output thrust pulsation
  • An embedded magnetic lead screw with reduced output thrust pulsation

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Embodiment Construction

[0020] Such as figure 1 with figure 2 As shown, the present invention is made up of magnetic screw rod 1 and magnetic nut 2, and magnetic screw rod 2 is sleeved outside magnetic screw rod 1, and magnetic screw rod 1, magnetic nut 2 both are coaxial and have air gap between them, and magnetic wire Rod 1 moves linearly along the axis, that is, figure 1 The direction of the Z-axis in the linear motion, the magnetic nut 2 rotates with the Z-axis as the rotation center, and the two move at the same time.

[0021] Magnetic screw mandrel 1 is made of a screw mandrel spiral electrical iron ring 3-1 and several first arc permanent magnets 4-1, the second arc permanent magnet 4-2, screw mandrel arc electrical iron 5-1. The arc angle of each first arc permanent magnet 4-1, second arc permanent magnet 4-2 and arc electrician iron 5-1 is 45 degrees, i.e. 1 / 8 arc, each first circle The inner and outer diameters of arc permanent magnet 4-1, the second arc permanent magnet 4-2 and the cir...

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Abstract

The invention discloses an embedded magnetic lead screw with reduced output thrust pulsation. The magnetic lead screw consists of a lead screw helical electrical iron ring and a plurality of first arc permanent magnets and second arc permanent magnets whose arc angles are all 45 degrees. The permanent magnet and the screw arc electric iron are composed of a magnetic nut. The magnetic nut is composed of a nut spiral electric iron ring and several third arc permanent magnets with an arc angle of 45 degrees, the fourth arc permanent magnet, and the nut arc electric iron. Composition; the surface of the screw screw electric iron ring is attached to the outer surface of the spiral track formed by all the arc electric irons, and the nut spiral electric iron ring is surface-attached on the inner surface of the spiral track formed by all the nut arc electric irons; the present invention The segmented arc permanent magnet and the segmented arc electric iron are spliced ​​into a helical magnetization structure, which reduces the process complexity and processing cost. The ideal spiral electrical iron ring is placed on the surface of the helical magnetization module, which can reduce the thrust. While pulsating, the thrust output is guaranteed to enhance the overall mechanical strength of the magnetic screw.

Description

technical field [0001] The invention relates to a manufacturing technology of a magnetic screw, in particular to a magnetic screw structure with a helical permanent magnet and a helical magnetic circuit. Background technique [0002] The magnetic screw has the characteristics of high thrust density, no contact friction, and simple maintenance, so it has a good application prospect in many fields such as aerospace, marine power generation, and artificial heart. At present, most of the research on the magnetic screw is the surface-mounted magnetic screw with alternating N and S poles spirally excited by the permanent magnet. This structure is composed of a magnetic nut and a magnetic screw. The magnetic nut rotates and the magnetic wire rotates. The rod moves in a straight line, and the two move at the same time. Since the lead screw permanent magnet adopts N and S poles to be alternately excited, there is a certain flux leakage in this structure, thereby reducing the magneti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K51/00
Inventor 吉敬华凌志健赵文祥刘正蒙
Owner JIANGSU UNIV
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