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Electric Linear Direct Drive

A driving device, linear technology, applied in the direction of electromechanical devices, electric components, electrical components, etc., can solve the problems of difficulty in maintaining the preload, small life expectancy, too loose sliding seat, etc.

Inactive Publication Date: 2011-11-30
FESTO AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the preload is too small, too loose guidance of the slide occurs, and if the preload is too high, the slide can clamp on the base element and wear out rapidly, which leads to a small anticipation of the linear direct drive life
Maintaining the preload is made more difficult by the fact that the electric drive unit is heated during operation of the linear direct drive and this heating leads to heating and expansion of the carriage body

Method used

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  • Electric Linear Direct Drive
  • Electric Linear Direct Drive
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Examples

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Embodiment Construction

[0029] exist figure 1 The linear direct drive 10 shown in FIG. 2 comprises a rail-like straight (geradlinig) longitudinally extending base element 12 and a linearly movable carriage 14 arranged on the base element 12 .

[0030] The base element 12, which is preferably produced as an extruded part made of aluminum, has a plurality of preferably planar guide elements 16, for example configured as guide surfaces, which are expediently produced from strip-shaped steel sheets in order to ensure Low-wear force transmission between slide 14 and base element 12 . The guide device 16 is planarly They are supported on the base element 12 and are oriented in a V-shape relative to one another, for example in pairs, wherein, for example, they can enclose a right angle. The guide means are arranged on opposite sides of the base element 12 in such a way that an X-shaped arrangement of the guide means 16 results, whereby the guide means 16 form corresponding pairs of undercuts, the shape o...

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Abstract

The invention relates to an electric linear direct drive with a longitudinally extending base element (12) having at least two guide elements (16) extending along a main axis (18); and with a slide (14 ), the slide (14) is linearly movably supported on the base element (12) in the axial direction of the main axis (18), and the slide (14) contains at least two The carriage body (24) of the guide mechanism (26, 27) on the guide device (16), which makes it possible to transfer the preload to the base element (12); An electric drive unit (72) configured to provide a drive force for the linear movement of the carriage (14) along the base element (12). According to the invention it is provided that the carriage body (24) has a first carriage section (38) with a first guide (26) and a separately embodied second carriage with a second guide (27) section (40), wherein the two slider sections (38, 40) are connected to each other by a coupling mechanism (58), and the slider body (24) and the coupling mechanism (58) have different coefficients of thermal expansion, so that the The pretension between the carriage (14) and the base element (12) can be kept at least approximately constant.

Description

technical field [0001] The invention relates to an electric linear direct drive with a longitudinally extending Base element (Basiselement), which has at least two guide devices extending along the main axis; and with a slide, which is linearly movably supported on the base element in the axial direction of the main axis, and which contains at least Two carriage bodies of the guide means for transmitting force to the guide means, wherein at least one guide body is respectively arranged between the guide means and the guide means, which enables a low-friction movement of the carriage relative to the base element (reibungsarm) Relative movement becomes possible, and it loads the preload force that is applied to the base element by the slide body; And with the electric drive unit carried by the slide, it is configured to provide the driving force for the slide Linear movement of the seat along the base element. Background technique [0002] Linear direct drives of this type ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/03
CPCH02K7/08H02K41/031H02K41/03
Inventor T·昂格
Owner FESTO AG & CO KG
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