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

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...

AI Technical Summary

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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