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Distributed monocular camera laser measuring device and method for assembling rotation angle of cylindrical parts

A technology of laser measurement and cylindrical parts, applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problem of low measurement accuracy

Active Publication Date: 2019-08-20
XIDIAN UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to address the shortcomings of the above-mentioned prior art, and propose a distributed monocular camera laser measurement device and method for the assembly corner of a cylindrical part, which is used to solve the technical problem of low measurement accuracy existing in the prior art

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  • Distributed monocular camera laser measuring device and method for assembling rotation angle of cylindrical parts

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Embodiment Construction

[0059] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail:

[0060] refer to figure 1 , a distributed monocular camera laser measuring device for the assembly angle of cylindrical parts, including the first cylindrical part A to be assembled and the second cylindrical part B to be assembled that are collinear in axis, equal in diameter and opposite to the assembly surface The laser device 1, the laser device support 2 and the computer 3 of relative rotation angle measurement, and the first monocular industrial camera 4 and the second monocular industrial camera 5 connected with the computer 3, wherein:

[0061] The diameter of the first cylindrical part A to be assembled and the second cylindrical part B to be assembled is 340 mm, the wall thickness of the cylinder is 15 mm, and the axes of the first cylindrical part A and the second cylindrical part B to be assembled are The X-axis of the three-dimensi...

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Abstract

The invention provides a distributed monocular camera laser measuring device and method for the assembling rotation angle of cylindrical parts and belongs to the technical field of precision assembly.The measuring method comprises the following steps that: a measurement coordinate system is established; two monocular industrial cameras acquire calibration images; a computer calibrates the two monocular industrial cameras; measurement parameters are set; the computer extracts the feature points of the assembling surfaces of a to-be-assembled cylindrical part A and a to-be-assembled cylindricalpart B; the computer extracts all the feature points of the assembling surface of the to-be-assembled cylindrical part A and the to-be-assembled cylindrical part B; the computer acquires an optimal pose conversion matrix and obtains the image coordinates of a pin on the assembling surface of the to-be-assembled cylindrical part A and a hole in the assembling surface of the to-be-assembled cylindrical part B; and the computer calculates an assembling angle alpha between the two to-be-assembled cylindrical parts A and B. With the measuring device and method of the invention adopted, the measuring precision of the assembling angle alpha of the cylindrical parts is effectively improved, and damage to the parts is reduced. The device and method can be used for measuring the assembling angle alpha of cylindrical parts such as a spacecraft and an underwater vehicle.

Description

technical field [0001] The invention belongs to the technical field of precision assembly, and relates to a measuring device and method for assembling corners of cylindrical parts, and further relates to a distributed monocular camera laser measuring device and method for assembling corners of cylindrical parts, which can be used for such as spacecraft, water Measurement of assembly rotation angle α of cylindrical parts such as aircraft. Background technique [0002] The assembly of cylindrical parts of spacecraft, underwater vehicles, etc. is a key link in their manufacture, and the quality and precision of their assembly largely determines the quality of their overall performance. In the assembly technology of cylindrical parts, for two cylindrical parts to be assembled, the three-dimensional space pose to be measured includes its three-dimensional displacement deviation, the deflection angle β around the horizontal axis, and the pitch angle γ around the vertical axis , T...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/26
CPCG01B11/26
Inventor 仇原鹰徐康力程培涛段学超张解语宁博李亚军李中权钟珂珂
Owner XIDIAN UNIV
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