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Position measuring system

A measurement system and position information technology, applied in the direction of measuring devices, conversion sensor output, instruments, etc., can solve the problems of workpiece waste, bit errors, etc., and achieve the effect of reducing workpiece waste

Inactive Publication Date: 2014-05-14
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Interfering factors that cause this error are, for example, noise or undesired electrical or electromagnetic influences that cause bit errors
As a result of the faulty scanning or faulty position determination, for example, when manufacturing tolerances are exceeded due to the faulty position determination and the resulting faulty control of the guide vehicle, workpiece rejections can occur.

Method used

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  • Position measuring system
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Examples

Experimental program
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Embodiment Construction

[0062] figure 1 A schematic plan view of an exemplary embodiment of a linear support device 1 is shown. There are numerous fields of application for such linear bearings, for example as machine parts in manufacturing technology or automation technology.

[0063] The linear bearing 1 has a linear guide 2 with an integrated position measuring system 4 . In this exemplary embodiment, the linear guide 2 is constructed in the form of a rail, on which a guide carriage 6 is mounted so that it can move linearly. The guide carriage 6 can be driven in a controlled manner in two opposite directions longitudinally along the linear guide 2 .

[0064] The position-measuring system 4 of the linear guide 2 comprises two scales 8 , 10 which are arranged on two opposite sides of the linear guide 2 , wherein an absolutely coded scale 8 and a scale 8 are provided. Incremental overall gauge 10. The position-measuring system 4 also has a side head 12 , which is assigned to the guide carriage 6 ...

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PUM

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Abstract

A position measuring system includes a first portion and a second portion, which can be moved relative to the first portion. The first portion has a material measure having a multiplicity of markings that are each able to assume two different values. A number m of directly successive markings codes a respective explicit absolute position along the material measure, and a number m-1 of directly successive markings does not code an explicit absolute position. The second portion has a scanning device having a number k of individual sensors for scanning a number n of directly successive markings. The scanning device is functionally connected to an evaluation device in order to ascertain the position of the second portion relative to the first portion. The condition n>m is satisfied, and the evaluation device is configured to recognize a scanning error in the scanning device.

Description

technical field [0001] The invention relates to a position-measuring system according to the preamble of claim 1 and to a linear guide having the features of claim 11 . Background technique [0002] Numerous applications are known from practice, in which it may be desirable to determine the absolute position of a first component which is moved relative to a second component. For example, linear systems and linear guides which can be used for various applications in manipulating technology, in particular linear technology, can be used in particular for such applications. For this purpose, there are numerous possibilities for the use of linear technology as machine components in mechanical engineering, especially in manufacturing and automation technology. [0003] A linear guide is proposed, for example, from DE 10 2007 042 796 A1, which has a guide carriage movable along it. The linear guide described there has an absolute scale for determining the absolute position of the...

Claims

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Application Information

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IPC IPC(8): G01B21/00
CPCG01D5/24476G01D5/2454G01D5/34746G01D5/34776
Inventor J.克诺普夫
Owner ROBERT BOSCH GMBH