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Photoelectric image measuring instrument and measuring method for detecting verticality of large-size workpiece

A technology of image measurement and verticality, which is applied in the direction of measuring devices, instruments, and optical devices, can solve the problems of low measurement accuracy, time-consuming, labor-intensive, and complicated problems, and achieve high measurement efficiency, high detection accuracy, and easy operation. Effect

Active Publication Date: 2020-02-07
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of the existing perpendicularity measurement operation, which is extremely complicated, time-consuming and labor-intensive, and the measurement accuracy is low, and to provide a photoelectric image measuring instrument and a measuring method for detecting the perpendicularity of large-sized workpieces

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  • Photoelectric image measuring instrument and measuring method for detecting verticality of large-size workpiece
  • Photoelectric image measuring instrument and measuring method for detecting verticality of large-size workpiece
  • Photoelectric image measuring instrument and measuring method for detecting verticality of large-size workpiece

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Embodiment Construction

[0032] Below in conjunction with accompanying drawing and specific embodiment content of the present invention is described in further detail:

[0033] like Figure 1-Figure 2 As shown, the photoelectric image measuring instrument for detecting the verticality of a large-sized workpiece includes a measuring unit 1 and a control unit 2; hole; the housing is sequentially provided with an optical path switching unit 3, an optical peripheral scanning unit 4, an internal focusing optical imaging unit 5, and a CCD camera 6 from the front end to the rear end, wherein the housing corresponding to the optical path switching unit is uniform along the circumferential direction Set with four side windows. Therefore, this instrument can not only perform CCD imaging on the finite and infinity targets aimed at by the main optical system (i.e., the inner focusing optical imaging unit 5), but also can use the optical peripheral scanning unit 4 to scan the target perpendicular to the above-men...

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Abstract

The invention provides a photoelectric image measuring instrument and a measuring method for detecting the verticality of a large-size workpiece, and solves the problems of complex operation, time andlabor consumption and low measuring precision of a conventional verticality measurement. The photoelectric image measuring instrument comprises a measuring unit and a control unit; the measuring unitcomprises a shell; the front end of the shell is provided with a front window, and the rear end of the shell is provided with a through hole; a light path switching unit, an optical panoramic scanning unit, an internal focusing optical imaging unit and a CCD camera are sequentially arranged in the shell from the front end to the rear end; the light path switching unit is uniformly provided with aplurality of side windows in the circumferential direction corresponding to the shell; the optical panoramic scanning unit is used for assisting the internal focusing optical imaging unit to image afront-view target and a side-view target; the light path switching unit is used for switching the imaging light paths of the front-view target and the side-view target; the CCD camera is positioned onthe focal plane of the internal focusing optical imaging unit and used for performing clear imaging and aiming interpretation on the targets; and the control unit is used for controlling each unit and the CCD camera and calculating the verticality error according to target image data.

Description

technical field [0001] The invention belongs to the technical field of photoelectric detection of large-sized workpieces, and in particular relates to a photoelectric image measuring instrument and a measuring method for detecting the verticality of large-sized workpieces. Background technique [0002] The verticality detection of large-sized workpieces has very important applications in the field of industrial measurement, such as aircraft, large ships, aerospace rocket manufacturing, nuclear power steam generator processing, boiler internal component installation, etc. are involved. [0003] Due to the large size of the workpiece, generally the diameter profile is greater than 4 meters and the length direction is more than 10 meters, so measuring equipment such as three-coordinate measuring machines cannot be used, and the laser tracker is easily affected by the vibration environment due to its complicated use and long measurement time. , the data reliability is low, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/26
CPCG01B11/26
Inventor 李华朱辉常何民
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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