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Guide having passive gravity compensation and vertically movably mounted platform

一种引导装置、重力补偿的技术，应用在用磁吸力或推力的保持装置、轴和轴承、轴承等方向，能够解决增加准确地调节位置的难度等问题，达到准确位置调节的效果

Active Publication Date: 2013-01-02
DR JOHANNES HEIDENHAIN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Various gravity compensation systems based on pre-tensioned springs are also known, however here, the spring force to compensate depends on the specific location, which adds to the difficulty of accurately adjusting the position

Method used

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  • Guide having passive gravity compensation and vertically movably mounted platform
  • Guide having passive gravity compensation and vertically movably mounted platform
  • Guide having passive gravity compensation and vertically movably mounted platform

Examples

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Embodiment Construction

[0021] figure 1 A first object K1 is shown, which is guided movably in the vertical direction R relative to the stationary second object K2 by means of a spring guide in the form of a leaf spring B. The selected illustration highly simplifies this guiding device, but makes it possible to clarify the principle of the application. The leaf spring B has a relatively low stiffness in a preferred direction (in this case the vertical direction R) and a much higher (usually around a factor of 100-1000) stiffness in other directions. Thus, as will be shown later, with such leaf springs it is possible to construct guides which allow the movement of the object in one direction but prevent it in all other directions.

[0022] exist figure 1 As shown in , the leaf spring B bends under the weight of the first object K1. As can easily be seen, this reduces the actually expected high stiffness of the leaf spring B transverse to the vertical direction R. Therefore, the leaf spring B shoul...

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PUM

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Abstract

The invention relates to a guide having passive gravity compensation by means of a magnet assembly (M1, M2, M3, M4), for guiding a first body (K1) relative to a second body (K1) in a vertical direction (R), comprising a spring guide (B), which enables movements between the first and second bodies (K1, K2) in the vertical direction and which blocks movements in all other directions, wherein moreover the first body (K1) is connected to a first magnet (M1) and the second body (K2) is connected to a second magnet (M2), wherein the second magnet (M2) has an opening in which the first magnet (M1) is arranged at least partially such that a repellant force acts between the first and second magnets (M1, M2), which are magnetized parallel to the vertical direction (R), but are magnetized oppositely, said repellant force opposing the force of gravity of the first body, wherein the positive mechanical rigidity of the spring guide (B) is compensated for at least partially by a negative rigidity of the magnetic spring formed by the first and second magnets (M1, M2), and wherein the first and second magnets (M1, M2) are shaped such that a horizontal gap (d) between the first and second magnets (M1, M2) varies in the vertical direction (R) inside the opening of the second magnet (M2). A platform mounted by means of such guides is also described.

Description

technical field [0001] The invention relates to a guiding device with passive gravity compensation function. Such a guide is used, for example, to mount a table or platform movable in the vertical direction, wherein movement in other directions is to be prevented. The invention also relates to a platform which is movably mounted by means of such a guide device. Background technique [0002] In many applications, such as in machine manufacturing or semiconductor production, mechanical components must be held against gravity and still be able to precisely control their vertical movement. In order to be able to adjust mechanical elements precisely and quickly to the desired position, an important prerequisite is a well predictable behavior of gravity compensation and guidance devices. [0003] Which type of guide can be used depends on the size of the vertical positioning area required. If this area is relatively small, guides based on elastic deformation can be used. Such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C32/04H02N15/00
CPCH02N15/00F16C32/0434H01F7/0236
Inventor 约翰·孔特尔巴特·万坎佩阿简·巴克
Owner DR JOHANNES HEIDENHAIN GMBH
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