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A method of producing a former for winding a magnet coil and a method of producing a magnet coil

A technology of magnet coils and coil formers, which is used in the manufacture of coils, superconducting magnets/coils, inductors/transformers/magnets, etc., can solve the problems of difficulty in mass production of superconducting magnets, and achieve the effect of convenient mass production.

Inactive Publication Date: 2009-05-06
SIEMENS FRIMLEY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In either case, however, there are difficulties in the high-volume production of superconducting magnets because each forming tool remains in contact with a single coil set either permanently or at least for a significant period of time from setting the winding stage to final setting the resin

Method used

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  • A method of producing a former for winding a magnet coil and a method of producing a magnet coil

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Embodiment Construction

[0021] Figure 1 comprises two parts, the upper part depicting the manufacture of the coil former 14 according to the steps of the method of the invention; and the lower part describing the coil assemblies 20, 22 formed on the coil former 14. In each case, the figures show a half-section along the axis of the cylindrical former 14 . As shown, all parts are rotationally symmetric about axis A-A, although the axially inner surface of bobbin 14 may allow for irregular shapes.

[0022] Referring now to the drawings, the tool 10 is machined with high precision to present protrusions such that the tool presents a surface 12 that is the opposite of the desired surface of the coil-defining structure. As is known in the art of molding and casting, a suitable medium, in this example a ceramic material, is cast against the opposite surface 12 to produce the coil former 14 exhibiting the desired coil-defining structure, the coil-defining structure Ridges 16 are included which define depre...

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Abstract

A method of producing a former for winding a magnet coil, said former (14) comprising a pattern of recess-defining ridges (16) which define at least one recess (18) into which wire may be wound to form a magnet coil, comprising the steps of: (a) producing an accurately machined tool (10) bearing a pattern of protrusions (12) conforming to an inverse of said pattern of recess-defining ridges; (b) producing said former by moulding material against said accurately machined tool; and (c) separating the former from the accurately machined tool. The invention also provides a method of producing a magnet coil employing the former so produced.

Description

technical field [0001] The present invention relates to electromagnet products, in particular substantially cylindrical superconducting magnets such as those used in Magnetic Resonance Imaging (MRI) systems. Background technique [0002] Typically, superconducting magnets for use in magnetic resonance imaging (MRI (magnetic resonance imaging)) systems are manufactured by winding superconducting wires onto a forming tool that is precisely machined with a Provides precisely positioned grooves. These wound coils can be further vacuum impregnated with resin to form a rigid structure. [0003] Alternatively, a wet winding process may be used in which a resin-coated wire is used for a coil wound onto a forming tool, and the resulting coil structure is cured by heating. [0004] In some cases where the coil is subjected to high forces during operation, it is necessary that the forming tool remains in place to provide structural support to the coil. While this is not often the ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/06H01F6/00G01R33/3815
CPCG01R33/3802H01F41/0687H01F41/048G01R33/3815H01F41/098Y10T29/49075Y10T29/49073Y10T29/4902Y10T29/49002Y10T29/49071H01F6/06H01F41/005H01F41/12
Inventor M·霍布斯E·C·M·雷纳
Owner SIEMENS FRIMLEY