Sphericity measuring device and method based on machine vision technology

Abstract

The invention relates to a sphericity measuring device and method based on the machine vision technology. The device comprises a base, a containing table, a background box, a control mechanism and animage collecting mechanism; a supporting base is installed at the bottom of the base, and multiple layers of rails are installed along at the top of the base along the peripheries; the image collecting mechanism comprises a top camera, a lateral camera and a camera support; the containing table comprises a containing frame, a containing base and an LED lamp belt, and the containing base is used for containing a to-be-measured object; the background box covers the containing frame, and multiple layers of circular second LED lamp belts are evenly distributed at the top of the background box; a lens of the top camera and a lens of the lateral camera extend into the background box from the top and the side face of the background box respectively and shoot an image of the to-be-measured object.Compared with a traditional measuring device and method, through the sphericity measuring device and method based on the machine vision technology, data processing is rapid and flexible, the scene anti-interference capacity is high, a composition error is small, the workload is small, the surface of the to-be-measured object cannot be damaged, the image of the to-be-measured object can also be well displayed, and the whole measurement information of the to-be-measured object is reflected.

Description

technical field [0001] The invention relates to a sphericity measuring device and a measuring method based on machine vision technology. Background technique [0002] The sphericity error has an important influence on the rotational motion of mechanical parts. Defects such as spherical roughness and spherical corrugation will lead to wear of parts, and it is very important to evaluate the spherical error accurately and efficiently. The traditional measurement of sphericity error is mostly contact measurement. The commonly used measurement methods include: measuring the diameter of the sphere with a micrometer multiple times to roughly estimate the sphericity error; measuring two or three mutually perpendicular large sphericity values ​​to evaluate the sphericity error. The traditional contact measurement method has limitations such as large comprehensive error, heavy workload, easy to damage the surface of the workpiece, and limited by the measurement environment, and only ...

AI Technical Summary

Problems solved by technology

The traditional contact measurement method has limitations such as large comprehensive error, heavy workload, easy to damage the surface of the workpiece, and limited by the measurement environment, and only reflects the local information of the spherical surface, and cannot accurately evaluate the overall sphericity error

Images