Linear motor and machine tool having the same mounted thereon

一种线性电动机、动作的技术，应用在机床领域，能够解决结构变复杂、零部件数量增加等问题，达到简单结构、防止落下、结构紧凑的效果

Inactive Publication Date: 2008-04-02
MURATA MASCH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Springs and air cylinders can be considered as countermeasures against falling, but there are problems of increasing the number of parts and complicating the structure

Method used

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  • Linear motor and machine tool having the same mounted thereon
  • Linear motor and machine tool having the same mounted thereon
  • Linear motor and machine tool having the same mounted thereon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] Next, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3 . This linear motor 1 includes a magnet member 2 and a coil member 3. The magnet member 2 is composed of permanent magnets whose N poles and S poles are alternately arranged in a predetermined axial direction. The coil member 3 surrounds the magnet member 2. The magnet member 2 is allowed to move relatively freely in the axial direction inside. The coil member 3 is a stator, and the magnet member 2 is a moving body.

[0025] The magnet member 2 is a member in which sliders 4, 5 are attached to both ends of a magnet member main body 2a made of a round bar-shaped permanent magnet.

[0026] The coil member 3 has a structure in which a plurality of cylindrical coils 6 surrounding the magnet member 2 are arranged in an axial direction. The plurality of coils 6 described above are housed in a common cylindrical coil case 7 , and caps 8 and 9 are attached to both ends of the co...

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PUM

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Abstract

The present invention provides a linear motor 1 that can prevent a magnet member 2 from falling down when a power supply is turned off. A linear motor 1 includes a magnet member 2 composed of permanent magnets having alternately arranged respective N poles and S poles and a coil member 3 which surrounds a periphery of the magnet member 2 and trough which the magnet member 2 is movable in an axial direction relative to the coil member 3. A magnetic substance 3 is provided in the vicinity of one end of the coil member 3 to allow the magnet member 2 to exert a magnetic attractive force (Fig.1).

Description

technical field [0001] The present invention relates to a linear motor and a machine tool such as a press machine equipped with the linear motor. Background technique [0002] Conventionally, as a linear motor, it has been proposed to include a magnet member composed of a circular shaft-shaped permanent magnet in which N poles and S poles are alternately arranged, and a member in which a plurality of coils surrounding the magnet member are arranged in the axial direction (for example, Patent Document 1). [0003] The linear motor disclosed in the above-mentioned Patent Document 1 is a device used to replace the combination of a rotary motor and a ball screw in OA machines and the like. The advantages of simplicity and good controllability. [0004] When a linear motor is used in a press machine, for example, when a movable member such as a hammer is stopped at a rising standby position, it is desired that the movable member does not fall even when the power supply of the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03B21D28/00
CPCH02K1/145H02K41/031H02K7/1185H02K5/1672H02K41/02
Inventor 冈田卓也石山里丘
Owner MURATA MASCH LTD
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