Measurement device for error motion of precision shafting and measurement method

A precision shafting and axial error technology, which is applied in the field of precision measurement, can solve the problems affecting the accuracy of precision shafting angle measurement and the measurement accuracy of measuring instruments, and achieve the effect of improving accuracy

Active Publication Date: 2019-01-04
HEFEI UNIV OF TECH
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Problems solved by technology

Due to the existence of error factors such as parts processing and assembly, there will be error motions (that is, radial, axial, and tilt error motions) in the process of rotation of the precision shafting system. The error motion includes both random error components and systematic error components. , however, this systematic error will seriously affect the angle measurement accuracy of the precision shaft system, and it will be corrected in the measurement model of the above-mentioned measuring instrument, which will further affect the measurement accuracy of the above-mentioned measuring instrument

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  • Measurement device for error motion of precision shafting and measurement method
  • Measurement device for error motion of precision shafting and measurement method
  • Measurement device for error motion of precision shafting and measurement method

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[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings.

[0030] Due to the influence of error factors such as parts processing and assembly of precision shafting, the precision shafting will produce error motion during the rotation process, which will affect the accuracy of measuring instruments containing precision shafting. The invention adopts laser light source, special standard measuring ball (including spherical surface and reflector), photoelectric detector and signal processing circuit to build a measuring device based on the principle of self-collimation for precision shafting error movement, so as to accurately measure precision shafting error The amount of movement lays the foundation for further improving the accuracy of measuring instruments containing precision shafting.

[0031] like figure 1 As shown in Fig. 1, a measurement device for precision sh...

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Abstract

The invention discloses a measurement device for the error motion of a precision shafting, which comprises a precision shafting, a specially-manufactured high-precision standard measuring ball arranged at the tail end of the precision shafting, a laser light source, a radial and axial error motion measurement subsystem and a tilt error motion measurement subsystem, wherein the axial end face of the standard measuring ball is a planar reflecting mirror, and the other parts are a spherical reflecting mirror. The measurement device adopts the laser light source, the specially-manufactured high-precision standard measuring ball, a four-quadrant detector and a signal processing module to realize a method for accurately measuring the error motion value of the precision shafting.

Description

technical field [0001] The invention relates to the field of precision measurement, in particular to a measurement device and a measurement method for error motion of a precision shaft system. Background technique [0002] Laser trackers, total stations, precision turntables, articulated arm coordinate measuring machines, etc. are all composed of precision shafts, and each precision shaft is equipped with a precision angle sensor, and its angle measurement accuracy directly affects the measurement of such instruments precision. Due to the existence of error factors such as parts processing and assembly, there will be error motions (that is, radial, axial, and tilt error motions) in the process of rotation of the precision shafting system. The error motion includes both random error components and systematic error components. , however, this systematic error will seriously affect the angle measurement accuracy of the precision shaft system, and it will be corrected in the me...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/02
CPCG01M13/02
Inventor 赵会宁于连栋曹家铭贾华坤姜一舟
Owner HEFEI UNIV OF TECH
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