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Longitudinal magnetic flux structure rectilinear eddy current brake

A linear eddy current braking and longitudinal magnetic flux technology, applied in asynchronous inductive clutches/brakes, electric components, electrical components, etc., can solve the problems of inability to continuously change, test loading force in one direction, etc., to improve test accuracy, eliminate The effect of fluctuation of loading force and convenient operation

Inactive Publication Date: 2012-02-15
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing linear motor thrust loading test device can only test in one direction and the loading force cannot be continuously changed, and provides a linear eddy current brake with a longitudinal magnetic flux structure

Method used

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  • Longitudinal magnetic flux structure rectilinear eddy current brake
  • Longitudinal magnetic flux structure rectilinear eddy current brake
  • Longitudinal magnetic flux structure rectilinear eddy current brake

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specific Embodiment approach 1

[0032] Specific implementation mode one: the following combination figure 1 Describe this embodiment, the linear eddy current brake with longitudinal magnetic flux structure in this embodiment, the brake is a unilateral structure, consisting of a primary and a secondary, with an air gap between the primary and secondary,

[0033] The primary is composed of an armature core 1-1 and an armature winding 1-2, and a plurality of rectangular slots are evenly opened on the surface of the air gap side of the armature core 1-1, so that the armature core 1-1 forms a cogged structure , the slotting direction of the rectangular slot is perpendicular to the moving direction of the brake mover, a winding coil is wound on each tooth between two adjacent rectangular slots, and the winding direction of the winding coil wound on two adjacent teeth is opposite. The winding coils on each tooth are sequentially connected in series to form the armature winding 1-2;

[0034] The secondary is compo...

specific Embodiment approach 2

[0036] Specific implementation mode two: the following combination figure 2 Describe this embodiment. This embodiment is a further description of Embodiment 1. The primary stage in this embodiment also includes a plurality of permanent magnets 1-3 and a plurality of magnetic yokes 1-4. The permanent magnets 1-3 are flat ,

[0037] A permanent magnet 1-3 is set in the center of each rectangular channel near the air gap side, and a magnetic guide yoke 1-4 is respectively embedded between each permanent magnet 1-3 and the two side walls of the rectangular channel where it is located. To fix the permanent magnet 1-3;

[0038] The magnetization direction of the permanent magnets 1-3 is parallel to the moving direction of the brake mover, and the magnetization directions of the adjacent permanent magnets 1-3 are opposite.

[0039] In this embodiment, each rectangular through slot is divided into two sections along the tooth height direction of the armature core 1-1, the section n...

specific Embodiment approach 3

[0041] Specific implementation mode three: the following combination image 3 Describe this embodiment, the linear eddy current brake with longitudinal magnetic flux structure in this embodiment, the brake is a double-sided structure, composed of two primary and one secondary, the two primary are arranged on both sides of the secondary in mirror image symmetry, one There are two parallel air gaps between the secondary and the two primary;

[0042] The primary is composed of an armature core 1-1, an armature winding 1-2, a plurality of permanent magnets 1-3 and a plurality of magnetic yokes 1-4; A plurality of rectangular through slots make the armature core 1-1 form a cogged structure, the slotting direction of the rectangular through slots is perpendicular to the moving direction of the brake mover, and a winding is wound on each tooth between two adjacent rectangular through slots Coil, the winding direction of the winding coils wound on two adjacent teeth is opposite, and ...

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Abstract

The invention relates to a longitudinal magnetic flux structure rectilinear eddy current brake, which belongs to the technical field of electric motors and solves the problems that a thrust loading test device of an existing linear electric motor is only capable of single-direction test and the loading force can not be changed continuously. The brake disclosed by the invention is in a unilateral structure and consists of a primary coil and a secondary coil, an air gap exists between the primary coil and the secondary coil, the primary coil consists of an armature core and an armature winding, an air gap side surface of the armature core is uniformly provided with a plurality of rectangular through slots so as to make the armature core form a toothspace structure, the slotting direction of the rectangular through slots is perpendicular to the movement direction of a rotor of the brake, a tooth between every two adjacent rectangular through slots is wound with a winding coil, the winding directions of the winding coils wound on the two adjacent teeth are opposite, and the winding coils on each tooth are sequentially connected in series to form the armature winding; and the secondary coil consists of a response plate and a magnetic conduction yoke plate, and the response plate is attached to the air gap side surface of the magnetic conduction yoke plate. The brake disclosed by the invention is suitable for the thrust loading test of the linear electric motor.

Description

technical field [0001] The invention relates to a linear eddy current brake with a longitudinal magnetic flux structure used in a linear motor characteristic testing system, and belongs to the technical field of motors. Background technique [0002] In the field of modern processing industry, many occasions such as laser cutting, high-speed grinding machines, precision lathes, machining centers, etc. require high-speed and high-precision linear motion. The traditional method can only use intermediate links such as rotating motors and ball screws to obtain linear motion. Movement, which inevitably has disadvantages such as large inertia, large friction, and backlash. In recent years, with the advancement of linear motor technology, more and more occasions have begun to directly apply it to obtain linear motion. Due to the direct drive technology, the linear motor has the advantages of fast speed, high acceleration, high positioning accuracy, long stroke and fast dynamic resp...

Claims

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Application Information

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IPC IPC(8): H02K41/02H02K49/04
Inventor 寇宝泉金银锡杨俊贵献国
Owner HARBIN INST OF TECH
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