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Device and method for measuring coaxiality

A coaxiality and detected technology, applied in the field of coaxiality measuring devices

Active Publication Date: 2015-07-15
XIAN NORTH ELECTRO OPTIC TECH DEFENSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in terms of coaxiality measurement, the method of visual reading measurement of dial indicator is almost used. This method has certain limitations, such as it must be contact measurement, reading measurement based on human eyes, etc.

Method used

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  • Device and method for measuring coaxiality

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Effect test

Embodiment 1

[0028] like figure 1 As shown, a device for measuring coaxiality includes a light source 1, and a beam-splitting prism 1 placed on the exit surface of the light source 1, and a lens 3, a beam-splitting prism 2, and a beam-splitting prism are sequentially arranged below the beam-splitting prism 1. A detected axis 6 is arranged below the second 5, a plane reflector 7 placed at a 45° angle is arranged on the left side of the dichroic prism two 5, and a detected axis two 8 is arranged below the plane reflector 7; above the dichroic prism one 2, there is A CCD detector 9 , the CCD detector 9 is electrically connected to a processor 10 , and the processor 10 is electrically connected to a computer 11 . The invention adopts a CCD detector with high quantum detection efficiency, high spatial resolution, high density resolution, high dynamic range, and can obtain the best image, the image quality is reliable and consistent for a long time, and the use cost is greatly reduced.

Embodiment 2

[0030] On the basis of embodiment 1,

[0031] The light source 1 of the present invention is a semiconductor laser point light source, and the semiconductor laser point light source has the characteristics of clarity, good consistency, and long service life; the lens one 3 and lens two 4 are convex lenses; the beam splitting prism one 2 and the beam splitting Prism 2 5 is a polarizing beam splitting prism with high extinction ratio.

[0032] like figure 2 As shown, a method for measuring coaxiality comprises the following steps:

[0033] 1) Build the optical path, set the light source at the focal point of lens 1, so that the light beam emitted by the light source passes through the beam splitter prism 1 and lens 1 to form a parallel beam; when the lens 1 and lens 2 are set, the focus positions coincide; the parallel beams converge after passing through the lens 2 , and then transmitted through the second beam splitter prism to reach the axis one, the first axis is set at...

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Abstract

The invention discloses a device and a method for measuring coaxiality. The device comprises a light source and a first beam splitting prism which is arranged on the emitting face of the light source. A first lens, a second lens and a second beam splitting prism are sequentially arranged below the first beam splitting prism. A first detected shaft is arranged below the second beam splitting prism. A plane reflecting mirror which is arranged by an angle of 45 degrees is arranged to the left of the second beam splitting prism. A second detected shaft is arranged below the plane reflecting mirror. A CCD detector is arranged above the first beam splitting prism. The CCD detector is electrically connected with a processor. The processor is electrically connected with a computer. The method comprises the following steps that firstly, a light path is constructed; secondly, the CCD detector is calibrated; thirdly, the light path is regulated; fourthly, reflected light tracks of the first detected shaft and the second detected shaft are imaged on the CCD detector and are output to the computer through the processor; fifthly, track matching is carried out by the computer, a coaxiality value is obtained by calculating. The theory is simple, the implementation is strong, the stability is good, the advantages of the automation and the intelligence are achieved, and online measuring can be carried out on the coaxiality.

Description

technical field [0001] The invention relates to a coaxiality measuring device in the technical field of optical detection, in particular to a device and method for measuring coaxiality during the assembly process of a shaft coupling. Background technique [0002] In mass industrial production, the highly automated production process and the increasing product quality require more effective, accurate and high-speed detection and identification methods. Optical detection technology can ensure the reliability in the industrial field environment, improve the degree of production automation, and greatly improve production efficiency. Therefore, in the modern automated production process, optical detection is widely used in product identification, quality control, measurement inspection, automation equipment and other fields. [0003] At present, in terms of coaxiality measurement, almost all of them use the method of visual reading measurement of dial indicator. This method has ...

Claims

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Application Information

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IPC IPC(8): G01B11/27
Inventor 张晓李时威胡振民朱宏斌王静
Owner XIAN NORTH ELECTRO OPTIC TECH DEFENSE
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