A gear measuring apparatus and measuring method based on active vision

Abstract

The invention relates to a gear measuring apparatus and measuring method based on active vision, and belongs to the technical field of high precision detection. The measuring apparatus comprises a base; a three-dimensional moving platform is arranged on the base; the three-dimensional moving platform comprises X, Y and Z axis guide rails which are perpendicular to each other; and a raster displacement sensor is arranged on the guide rail in each axis; the Z-axis guide rail is slidably provided with a carriage; an industrial camera and a lens which are connected are arranged on the carriage; an output end of the industrial camera is connected to a host computer; a background light source is fixed on the base; each displacement sensor is connected with a controller for calculating the positioning information of the three-dimensional moving platform; the controller is connected with the host computer; and the host computer realizes the motion control and positioning information acquisition of the three-dimensional platform through sending commands to the controller. The gear measuring apparatus and measuring method of the invention can effectively realize high-precision non-contact measurement of gears in the effective dimension scope of 50mm-500mm to reach an effect of reducing cost.

Description

technical field [0001] The invention relates to the technical field of gear detection, in particular to a gear measuring device and a measuring method based on active vision. Background technique [0002] Gears are the most widely used transmission parts in the mechanical field. Because of its stable transmission, low noise, various shapes and structures, flexible and adjustable shape and size parameters, and constant transmission ratio, the application of gears covers all aspects of life and military fields, ranging from mechanical watches, children's toys, to automobiles , ships, aerospace vehicles. [0003] With the rapid development of science and technology, various application fields have put forward higher requirements for the quality of gears, such as more stable transmission and lower transmission noise, and these are determined by the quality of the gears and whether the parameters of the produced and processed gears meet the requirements. The design requirements...

AI Technical Summary

Problems solved by technology

This can seriously affect the accuracy of the measurement

[0009] (2) There is distortion in the camera lens, which leads to the deformation of the gear image. Even after correction, it still cannot be completely eliminated, which has a great impact on the measurement accuracy

[0010] (3) The accuracy of the image morphology method applied in the method itself is very low

The scanned global image data volume is too large, image processing, analysis and measurement of such a large data volume, the calculation is too large and the efficiency is low

[0014] (2) Scan the gear line by line to obtain the global image of the gear, which is too inefficient

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