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Dynamic six-degree-of-freedom measurement device of rotating shaft and measurement method

A technology of dynamic measurement and rotary axis, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of six degrees of freedom synchronous measurement and measurement accuracy of the rotary axis, achieve good fixing effect, simple installation method, and improve stability sexual effect

Pending Publication Date: 2020-08-21
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a dynamic measurement device and method for measuring the six degrees of freedom of the rotary shaft in order to solve the technical problem that the prior art cannot perform synchronous measurement of the six degrees of freedom of the rotary shaft at one time and the measurement accuracy is low.

Method used

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  • Dynamic six-degree-of-freedom measurement device of rotating shaft and measurement method
  • Dynamic six-degree-of-freedom measurement device of rotating shaft and measurement method
  • Dynamic six-degree-of-freedom measurement device of rotating shaft and measurement method

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Embodiment 1

[0102] refer to figure 1 with figure 2 In this embodiment, a machine tool is taken as an example, the power mechanism is a machine tool, and the rotary axis to be tested is the rotary axis of the machine tool. The dynamic measurement device for six degrees of freedom of the rotary shaft of the present invention includes a machine tool 1; a frame 2 arranged on the machine tool 1 and connected with the machine tool 1 by bolts; a motion joint mechanism 3 arranged on the frame 2 for connecting the rotary shaft 8 The measurement mechanism is arranged on the frame 2 and is used to measure the relevant parameters of the rotary shaft 8; the data acquisition system is connected with the measurement mechanism to collect the measurement data of the measurement mechanism; the data analysis system is connected with the data acquisition system. It is used to analyze the data collected by the data acquisition system; the measuring mechanism includes an angle measuring mechanism and a displ...

Embodiment 2

[0110] refer to Figure 4 with Figure 8 In this embodiment, on the basis of Embodiment 1, the displacement sensor is detachably connected to the frame 2; the frame 2 is provided with a mounting hole 21 and a pressure seam 22, and one end of the pressure seam 22 runs through the mounting hole 21, and the other end is connected to the machine. Outside the frame 2, the frame is provided with a threaded hole 23 facing the pressure seam, and a bolt is provided in the threaded hole 23; the inner wall of the mounting hole 21 is an arc structure matching the shape of the displacement sensor.

[0111] The installation method of the displacement sensor in the present invention is relatively unique. First, the displacement sensor is installed in a mounting hole slightly larger in size than the displacement sensor, thereby facilitating the insertion of the displacement sensor; Friction or interference, and then damage the displacement sensor; after the displacement sensor is installed, ...

Embodiment 3

[0113] The measuring method is used for the dynamic measuring device with six degrees of freedom of the rotary axis of embodiment one or embodiment two, comprising the following steps:

[0114] S1 installation:

[0115] The motion joint mechanism 3 is coaxially installed with the measured rotary shaft through the installation joint 33, and the circular grating 41 is installed on the installation surface of the motion joint mechanism 3; the multi-reading head 42 is connected with the data acquisition system 6 through a wiring harness; the frame 2 It is fixedly connected with the machine tool 1 by bolts;

[0116] Install displacement sensor I51, displacement sensor II52, displacement sensor III53, displacement sensor IV54 and displacement sensor V into the installation hole 21;

[0117] S2 adjustment:

[0118] Retract the five displacement sensors into the mounting holes 21, move the measured rotary shaft in the X-axis and Y-axis directions until it is located at the center of...

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Abstract

The invention discloses a dynamic six-degree-of-freedom measurement device of rotating shaft. The device comprises a rack, a power mechanism, a data acquisition system and a data analysis system. Therack is provided with a measurement mechanism and a motion joint mechanism; the data acquisition system is connected with the measurement mechanism and is used for acquiring measurement data of the measurement mechanism; the data analysis system is connected with the data acquisition system and is used for analyzing the data acquired by the data acquisition system; the measuring mechanism comprises an angle measuring mechanism and a displacement measuring mechanism. The invention further discloses a measurement method of a dynamic six-degree-of-freedom measurement device of rotating shaft. Themeasurement method comprises the steps of S1, installation, S2, adjustment, S3, data acquisition and S4, data processing. Six-degree-of-freedom measurement of the rotating shaft can be completed in the same equipment, and problems of high measurement time consumption, complicated measurement process and the like caused by multi-plane separated measurement of the error of the rotating shaft and separated measurement of the angle error are solved; the device has the advantages of high measurement efficiency, simple structure, convenience in installation and the like; meanwhile, the detection cost is greatly reduced.

Description

technical field [0001] The invention relates to the detection of spatial geometric precision, in particular to a dynamic measuring device and a measuring method for six degrees of freedom of a rotary axis. Background technique [0002] The six degrees of freedom of the rotary axis include the degrees of freedom of movement along the three rectangular coordinate axes of X, Y, and Z and the degrees of freedom of rotation around these three coordinate axes. According to the standards ISO230-2 and ISO230-7, the six degrees of freedom of the rotary axis can be For division, the degree of freedom of rotation around the Z axis is the position accuracy of the rotary axis, and the other five degrees of freedom are the full attitude dynamic rotation accuracy of the rotary axis. In terms of technical research, the six degrees of freedom of the rotary shaft is an important technical index for evaluating the dynamic performance of the rotary shaft. Taking machine tools as an example, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/26G01B21/02
CPCG01B11/26G01B21/02
Inventor 周怡帆刘兴宝米良夏仰球滕强唐强陈衡杜坤韩林
Owner INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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