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Magnetic flux reverse linear motor

A technology of linear motors and electric motors, applied in the direction of electric components, electrical components, electromechanical devices, etc., can solve the problems of machine shutdown, permanent magnet separation, high cost, etc.

Inactive Publication Date: 2009-11-04
XI TELE MA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] A disadvantage of characterizing known linear motors is the large number of permanent magnets that have to be used, all depending on the length of the secondary, and / or the stroke of the motor
[0008] Another disadvantage of the known electric motor is related to the complex operation of fixing the permanent magnets, which, in addition to prolonging the assembly time of the electric motor, also requires considerable costs in terms of production
Also, this type of assembly of the permanent magnet entails the additional problem of mechanical action occurring between the magnet and the ferrous part, thus also possibly causing permanent magnet detachment and consequent machine downtime

Method used

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Embodiment Construction

[0022] Referring to the drawings, a linear motor according to the invention, generally indicated by the reference numeral 1, comprises a primary element or stator 2, which is rectilinear and provided with at least one tooth 3, or preferably a plurality of teeth arranged side by side 3.

[0023] A corresponding coil 4 is arranged around each tooth 3 (here primary tooth) and comprises, for example, a copper coil and is connected to a conventional electronic drive not shown in the figures.

[0024] Preferably, the primary element 2 consists of a plurality of ferromagnetic laminations, which have the same shape and are stacked to form a lamination assembly with the teeth-like structure of the primary element 2 as shown.

[0025] The linear motor 1 also comprises a toothed secondary element 5 made of ferromagnetic material, which is flat and faces the teeth 3 of the primary element.

[0026] The primary and secondary elements are conventionally mounted on a structure (not shown in...

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Abstract

The invention relates to a magnetic flux reverse linear motor (1) which comprises a primary element (2) and a toothed secondary element (5), wherein the primary element (2) is provided with at least one primary tooth (3), and a corresponding coil (4) which is suitable for conducting changeable current is arranged around the primary tooth (3). The magnetic flux reverse linear motor is characterized in that a toothed secondary element (5) facing the primary tooth (3) is arranged and comprises a plurality of secondary teeth (6) made of ferromagnetic material, the secondary teeth (6) are protruded towards the primary tooth to determine an air gap (11) of the motor; at a primary tooth end (31) which is guided towards the air gap of the motor, each primary tooth comprises a pair of magnetic bodies (9, 10); and the magnetic bodies are installed towards the air gap in a mode of guiding reverse polarities with each other.

Description

technical field [0001] The invention relates to a magnetic flux reversal linear motor, which is especially suitable for the fields of automation and robot technology, and all positioning or motion systems requiring positioning accuracy and motion transmission rigidity. Background technique [0002] It is known that in conventional linear or linear motors with surface magnets, the field flux is produced by permanent magnets called "secondary elements" or more simply "secondary" placed on a fixed support platen and connected with Coils called "primary elements" or more simply "primary" arranged on different movable supports interact with each other. The primary and secondary can also be named stator and converter respectively, although with linear motors the last terms do not always represent the moving and stationary elements of the motor. Depending on the application, in practice the secondary can be fixed while the primary can move in a plane parallel to the secondary, or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/02H02K41/03
Inventor G·帕格尼
Owner XI TELE MA
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