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A method of aperture measurement based on non-contact sensor combination

A measurement method, non-contact technology, applied in the field of geometric quantity measurement, can solve the problem of not solving the problem of aperture measurement method at the same time, and achieve the effect of saving measurement man-hours, improving measurement efficiency, and improving safety

Inactive Publication Date: 2016-06-22
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of space and the measured object, aperture measurement cannot be measured by simple installation on the outside like external dimension measurement, let alone automatic measurement
[0005] 2. The problem of measurement accuracy
[0006] 3. Questions about the rapidity of measurement
[0007] It is worth mentioning that, according to the data consulted by the author, there is no aperture measurement method that can solve the above difficulties at the same time

Method used

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  • A method of aperture measurement based on non-contact sensor combination
  • A method of aperture measurement based on non-contact sensor combination
  • A method of aperture measurement based on non-contact sensor combination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 101: First install the main shaft of the dual-sensor probe on a mechanism with a translation function to form a complete measurement system and place it in the workpiece to be measured;

[0052] During measurement, the measurement optical axes of the two sensors on the dual-sensor probe are required to be on a straight line, that is, the two measurement laser beams are collinear. This measurement method does not rely on a certain type of dual-sensor probe, as long as it is a dual-sensor probe that can realize the above-mentioned functions in the art.

[0053] The dual-sensor measuring head adopted in the embodiment of the present invention is given below, and the dual-sensor measuring head comprises: a measuring probe frame 1, a moving frame 2, a measuring device 3 and a connecting part 4 are arranged on the measuring probe frame 1,

[0054] The probe frame 1 includes: a U-shaped groove 11, one side of the U-shaped groove 11 is provided with 4 first adjustment keys 12, ...

Embodiment 2

[0062] 201: First, install the main shaft of the dual-sensor probe on a mechanism with a translation function to form a complete measurement system and place it in the workpiece to be measured;

[0063] 202: The dual-sensor measuring head rotates on the ZOY surface and the XOY surface successively to obtain the inner hole diameter of the workpiece to be measured.

[0064] As described in Embodiment 1, after the dual-sensor measuring head rotates on the ZOY plane, the measuring optical axis can be adjusted to a plane parallel to the XOY plane. When the dual-sensor probe rotates on the parallel plane of the XOY plane, that is, the dual-sensor probe rotates around the Z-axis, the measurement data will still change from small to large and then from large to small. Next, analyze whether the measured maximum value is the inner hole diameter of the workpiece to be tested.

[0065] The schematic diagram of the dual-sensor probe rotating on the XOY plane is shown in Figure 3. In the ...

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Abstract

The invention discloses an aperture measuring method based on non-contacting type sensor combination, is suitable for measuring the size of the inner diameter of a workpiece, and relates to the geometric sense measuring field. The method comprises the following steps: first, installing a main shaft of a double-sensor measuring head on a mechanism with the horizontal moving function so as to form a complete set of measuring system which is arranged in a workpiece to be measured; at measuring time, measuring optical axes of two sensors on the double-sensor measuring head being enabled to be on the same straight line; the double-sensor measuring head first rotating on a ZOY face, and then horizontally moving on an XOY face, finally the diameter of an inner hole of the workpiece to be measured is obtained; or, the double-sensor measuring head sequentially rotates on the ZOY face and the XOY face to obtain the diameter of the inner hole of the workpiece to be measured. When the method is used for measuring the diameter of the inner hole of the workpiece to be measured, only two procedures need operating theoretically, so that measuring efficiency is greatly improved, and a large number of measuring labor hours are saved. Moreover, the non-contacting measuring head is arranged on a lathe, a motion execution mechanism of the lathe is used for enabling the measuring head to rotate or move horizontally, so that on-machine accurate measuring can be achieved.

Description

technical field [0001] The invention relates to the field of geometric quantity measurement, in particular to an aperture measurement method based on a combination of non-contact sensors. Background technique [0002] With the rapid development of my country's industrial manufacturing industry, the role of large-scale equipment in the industrial manufacturing process has become more and more important. Aerospace, shipbuilding, engines, turbines and other fields all require the geometric measurement technology of large workpieces as an effective support. At present, for the measurement of large workpieces, in addition to the traditional large-scale micrometer, universal length measuring instrument, Abbe length measuring instrument, dial indicator and pneumatic measuring instrument, there are also many new measurement methods. At present, there are mainly theodolite measurement , Total station measurement, tracker measurement, dual-frequency laser interferometer measurement, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/12
Inventor 李兴强王仲刘新波郑镕浩
Owner TIANJIN UNIV
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