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Horizontal roundness and cylindricity automatic-measuring device

A cylindricity and measuring instrument technology, applied in electromagnetic measuring devices, electric/magnetic profile/curvature measurement, etc., can solve the problems of difficult on-site measurement, large size of CMM, and high technical requirements for installation, and achieves convenient operation and upgrade. Fast, cost-effective effects

Inactive Publication Date: 2011-07-13
SHANGHAI INST OF TECH
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AI Technical Summary

Problems solved by technology

However, due to its large size and high installation technical requirements, the three-coordinate measuring machine is only suitable for laboratory measurement of roundness and cylindricity, and it is difficult to directly apply it to on-site measurement.

Method used

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  • Horizontal roundness and cylindricity automatic-measuring device
  • Horizontal roundness and cylindricity automatic-measuring device
  • Horizontal roundness and cylindricity automatic-measuring device

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Such as figure 1 As shown, the horizontal automatic roundness and cylindricity measuring instrument of the present invention includes a computer, a data acquisition card, a motion control card, an eddy current sensor, a preamplifier and a three-degree-of-freedom horizontal workbench.

[0029] The computer outputs control signals to the motion control card according to the programmed program, and the motion control card drives the main shaft rotation motor in the three-degree-of-freedom horizontal workbench, the X-axis horizontal movement motor, and the Z-axis vertical movement motor to realize the rotary motion of the main shaft of the horizontal workbench. Make the measured workpiece rotate; the movement of the X-axis and Z-axis of the worktable realizes the axial movement and radial movement of the eddy current sensor along the measured workpie...

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Abstract

The invention relates to a horizontal roundness and cylindricity automatic-measuring device. The measuring device comprises a computer, a data acquisition card, a motion control card, an eddy current sensor, a preamplifier and a horizontal workbench with three degrees of freedom, wherein the computer is used for outputting a control signal to the motion control card according to a programmed program, and the motion control card is used for driving a main shaft rotating motor, an X-axis horizontal moving motor and a Z-axis vertical moving motor in the horizontal workbench with three degrees of freedom to realize rotational motion of a main shaft of the horizontal workbench so as to enable a tested workpiece to rotate; and axial movement and radial movement of the eddy current sensor along the tested workpiece are respectively realized through moving of an X-axis and a Z-axis of the workbench, the eddy current sensor is used for transforming a distance between an actual surface of the tested workpiece and the eddy current sensor into a voltage signal, the voltage signal is detected by the preamplifier, amplified and output to the data acquisition card and then transmitted to the computer for analysis and processing. By adopting virtual instruments, convenient operation, simple maintenance and quick upgrading are realized, and a qualitative leap on the whole measuring device can be reached only by upgrading software.

Description

technical field [0001] The invention relates to a roundness and cylindricity measuring device of a workpiece, in particular to a roundness and cylindricity measuring device which is applied to a virtual instrument technology to obtain relatively accurate roundness and cylindricity measurement values. Background technique [0002] In recent years, precision measurement technology has developed rapidly, but precision measurement of geometric quantities such as cylinder and cylindricity, especially on-site measurement, is still difficult. [0003] From the measurement principle, roundness and cylindricity measurement can be divided into contact measurement and non-contact measurement. [0004] 1. contact measurement studies [0005] Contact measurement is the direct contact between the measuring instrument or probe and the workpiece to be measured, which is a common measurement method in traditional measurement. Common instruments include outer diameter micrometers, inner di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/28
Inventor 荆学东祁广利吉涛何凯杨亮
Owner SHANGHAI INST OF TECH
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