External diameter images measuring device for axial work pieces and measuring method thereof

Abstract

The invention relates to an external diameter images for axial work pieces measuring device and a measuring method thereof. The external diameter images of axial work pieces measuring device includes a base, a platform, a light source, a microscope and a camera, wherein the microscope is fixed on the base through an installing support, the light source is arranged on a base on the lower portion of a microscope lens, the platform is located above the light source, a transparent sheet is embedded in the middle of the platform, the position of the transparent sheet corresponds to that of the light source, a placing seat for axial work pieces is arranged on the transparent sheet, the camera is located on the upper portion of the microscope and connected with the microscope, and the camera is connected with a computer through a data line. The measuring method includes: firstly collecting and preserving an edge static image of an axial standard component, secondly collecting and preserving an edge static image of an axial work piece to be detected, thirdly obtaining the external diameter of the detected axial work piece through the processing and calculating of the computer and displaying the external diameter on the screen. According to the external diameter images for axial work pieces measuring device and the measuring method thereof, a non-contact measurement for the external diameter of axial work pieces is achieved, the illumination is uniform, the images are clear and the measuring efficiency and measuring accuracy are greatly improved.

Description

[0001] technical field [0002] The invention relates to a measuring device and a measuring method for the outer diameter of a shaft workpiece, in particular to an image measuring device and a measuring method for the outer diameter of a shaft workpiece with non-contact measurement, high measurement accuracy and fast measurement speed. Background technique [0003] To measure the outer diameter of shaft workpieces, some traditional methods, such as using tools such as micrometers, vernier calipers or gauges, inevitably have the disadvantages of low precision, high labor intensity, and poor reliability. However, high-precision instruments such as three-coordinate machines will inevitably reduce the detection rate, which is not conducive to high-efficiency measurement. Micrometer method and instrument measurement method are relatively compromise methods. Compared with the three-coordinate machine, the operation is relatively simple, while the accuracy can be guaranteed, and th...

AI Technical Summary

Problems solved by technology

[0005] The invention mainly solves the technical problem that the original shaft workpiece outer diameter measurement operation is inconvenient and cannot meet the needs of large-scale measurement; at the same time, it solves the problem that the original microscope image measurement generally adopts the upper lighting method, and there are reflections and edge sharpening are not obvious situation, technical problems that affect the measurement accuracy; provide a shaft workpiece outer diameter image measurement device and its measurement method, which avoids the situation of reflection and edge sharpening, improves the measurement accuracy, and the measurement operation is simple and the measurement efficiency is high. , high degree of intelligence, to meet the needs of mass measurement

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