Precision measuring system and precision measuring method for positions and diameters of automotive frame assembling holes

Abstract

The invention provides a precision measuring system and a precision measuring method for positions and diameters of automotive frame assembling holes. The precision measuring system comprises a main manipulation table, a height-fixed frame, a slide table, a servo motor, a servo motor encoder, a camera, horizontal precise slide rails, a standard two-dimensional control field, a toughened glass light source cover, a measured frame and a damper. The precision measuring method includes the steps of acquiring continuous local images of the tested frame, subjecting every image to feature extraction, conducting coordinate transformation by the aid of the extracted information of the images and the measurement control field to finish precision measurement of the diameters and the positions of the automotive frame assembling holes, and finally writing measurement results into a two-dimension code anti-counterfeiting and tracing system. The precision measuring system and the precision measuring method for the positions and the diameters of the automotive frame assembling holes have the advantages that difficulties of low manual measuring efficiency and large labor intensity are overcome, conveniences are provided for subsequent frame maintenance, information querying and the like, and the precision measuring system and the precision measuring method are particularly applicable to measurement on assembling holes for U-shaped flat frames.

Description

technical field [0001] The invention relates to the field of monitoring the processing quality of automobile girders, in particular to a precise measurement system and method for the hole positions and apertures of the assembly holes of the automobile girder. Background technique [0002] In the manufacturing and assembly process of large-scale mechanical equipment, the measurement of geometric dimensions and shape and position tolerances of large-scale workpieces is a key factor to ensure the quality of the entire set of equipment. Generally, the measurement of a size above 500mm is a large-scale measurement. Since the large-scale measurement exceeds the general measurement range and the measurement conditions are poor, the measurement method and the measuring tools used are special. At present, the commonly used large-size workpiece measurement systems include theodolite measurement system, laser tracking measurement system, laser scanning measurement system, joint coordin...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a precision measurement system and method for the assembly hole position and aperture of the automobile frame in view of the above-mentioned deficiencies in the prior art. Bit size, and the measurement results are written into the two-dimensional code anti-counterfeiting traceability system, which effectively solves the problems of low manual detection efficiency and high labor intensity, and at the same time provides convenience for subsequent beam maintenance and information query.

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