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Electrical direct linear drive device having two guide rails for the linear guidance of a stator having a driven sled

A driving device, linear guide technology, applied in the direction of electromechanical devices, bearings for linear motion, electrical components, etc., can solve the problem that the carriage can no longer be guaranteed.

Inactive Publication Date: 2012-08-29
FESTO AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, this arrangement is only suitable if the carriage is positioned horizontally on the guide rail, although the thermal expansion of the heated carriage no longer plays a significant role during operation.
For all other positions of the linear drive, sufficient guidance of the carriage is no longer guaranteed

Method used

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  • Electrical direct linear drive device having two guide rails for the linear guidance of a stator having a driven sled
  • Electrical direct linear drive device having two guide rails for the linear guidance of a stator having a driven sled
  • Electrical direct linear drive device having two guide rails for the linear guidance of a stator having a driven sled

Examples

Experimental program
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Effect test

Embodiment Construction

[0024] figure 1 The electric linear direct drive shown in has an elongated stator 10 along which a carriage 11 is displaceably guided. In order to guide the carriage 11, two guide rails 12, 13 are mounted on the stator 10, which guide rails are arranged on differently oriented sides of the stator adjoining each other, ie one guide rail 12 is arranged on the top side 14 of the stator 10 , while the other guide rail 13 is arranged on one of the two adjacent narrow sides, ie on the narrow side 15 . In this case, the guide rail 12 is mounted on the edge region of the top side 14 facing away from the narrow side 15 , so that the two guide rails 12 , 13 are located as far apart as possible from one another. Since the angle between the top side 14 and the narrow side 15 is substantially 90°, the guide rails 12 , 13 are correspondingly offset from one another by 90°. Accordingly, the carriage 11 has an L-shaped cross-section, wherein the larger plate-shaped leg forms the first carri...

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Abstract

The invention relates to a direct linear drive device having a stator (10) comprising two guide rails (12, 13) for the linear guidance of a driven sled (11), wherein a permanent magnet arrangement (18) causing the drive and a drive coil arrangement (19) movable relative thereto are provided. The guide rails (12, 13) are disposed on differently oriented sides (14, 15) of the stator (10) adjacent to one another, wherein the sled (11) at least partially overlaps each of said sides (14, 15). Guide elements disposed on the sled (11) comprise guide channels for accommodating the guide rails (12, 13).

Description

technical field [0001] The invention relates to an electric linear direct drive. Background technique [0002] In the case of such a linear drive known from DE 29807438 U1, two guide rails are arranged on one side of the stator substantially in the same plane. One of these guide rails is used only as an aid to compensate for tolerances and thermal expansions, the associated guide part of the carriage being free to move transversely to the guide longitudinal direction. This arrangement is therefore only suitable if the carriage is situated horizontally on the guide rail, although the thermal expansion of the heated carriage no longer plays a significant role during operation. For all other positions of the linear drive, adequate guidance of the carriage is no longer guaranteed. Contents of the invention [0003] The object of the present invention is to provide a guide device with two guide rails which is largely independent of the spatial position of the linear direct dr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/025
CPCF16C29/008H02K41/031H02K7/08F16C29/004F16C29/0647
Inventor M·芬克贝纳T·昂格
Owner FESTO AG & CO KG
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