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Linear movement device with function of monitoring service lifetime

A linear motion, linear technology, applied in the direction of measuring devices, electrical devices, electromagnetic measuring devices, etc., can solve problems such as drift drama

Active Publication Date: 2018-08-03
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Here, however, it should be taken into account that, with long-term, static loads, the signals of the strain gauges are subject to significant drift, which is exacerbated by temperature influences

Method used

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  • Linear movement device with function of monitoring service lifetime
  • Linear movement device with function of monitoring service lifetime
  • Linear movement device with function of monitoring service lifetime

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] figure 1 A roughly schematic cross-section through a prestressed linear rolling guide 20 according to a first embodiment is shown. The linear rolling guide 20 has a guide rail 21 extending with a constant cross-sectional shape along a longitudinal axis 11 perpendicular to figure 1The drawing plane orientation of . The guide rail 21 is preferably made of steel and is hardened in the region of the track for the rolling elements 22 . Currently, the rolling bodies 22 are designed as balls made of hardened steel, wherein cylindrical or barrel-shaped rolling bodies are also conceivable. Viewed in cross section, the guide carriage 30 is U-shaped. It has a fastening portion 32 from which two legs 31 project at right angles. fastening part 32 with workbench (in figure 2 The label 12) is fixedly connected. The leg 31 surrounds the guide rail 21 , wherein the rolling bodies are arranged between the guide rail 21 and the leg 31 . Presently, two rows of bearing rolling bodie...

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PUM

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Abstract

The invention relates to a linear movement device equipped with a workstation and a base. The workstation is movably guided through at least one linear rolling guiding device in the direction of a longitudinal axis through a base. Each linear rolling guiding device comprises a guide rail and at least one guiding trolley. Each guiding rail is fastened at the base. Each guiding trolley is fastened at the workstation. Each guiding trolley surrounds a guide rail matching each guiding trolley in the U-shaped form with two legs. According to the invention, at least one displacement sensor is arranged. The displacement sensor is utilized to measure following deformation of at least one matched leg of each guiding trolley. The deformation is transverse to the longitudinal axis, wherein at least one displacement sensor can be firmly fixed or fastened at the workstation or the base. An evaluation device is arranged and configured such that pre-tightening changes of at least one matched guiding trolley can be determined when at least one displacement sensor is used.

Description

technical field [0001] The invention relates to a linear motion device according to the preamble of claim 1 . Background technique [0002] A linear rolling guide is known from EP 1719 992 B1, which is provided for use in a linear motion device. The guide carriage is provided with strain gauges, by means of which the deformation of the strain gauges due to external loads is firstly to be measured. It is also known that the pretension of the guide carriage decreases due to wear, wherein the resulting deformations can also be measured using strain gauges. However, it should be taken into consideration here that, with long-term, static loads, the signals of the strain gauges are subject to significant drift, which is exacerbated by temperature influences. Contents of the invention [0003] The advantage of the invention is that the occurrence of wear on the linear rolling guide and thus the approaching end of service life can be reliably detected. The corresponding measure...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16C29/04G01B7/02G01B7/24
CPCF16C29/04G01B7/02G01B7/24B23Q1/58B23Q17/008F16C19/522F16C29/0638F16C29/0645F16C29/12F16C2233/00G01B5/0004G01B5/0009G01B5/0014G01B7/023G01B7/16
Inventor H.罗斯托伊舍M.伦佩尔
Owner ROBERT BOSCH GMBH