Turbine blade visual inspection system

Abstract

The invention discloses a turbine blade visual inspection system comprising a machine body, an electric rotating platform and an electric horizontal movement platform. The upper portion of the machine body is provided with a workbench, and a top cover is arranged on the machine body and covers the workbench. The electric rotating platform is installed on the surface of the workbench and used for containing a blade to be detected. The electric horizontal movement platform is provided with a guide slide rail in the vertical direction. A measurement sensor is arranged on the guide slide rail and can move up and down relative to a workbench surface. The measurement sensor is provided with a laser device and a camera, wherein the laser device can emit the laser which is used for measurement and enters the blade in an incidence mode, and the camera is used for receiving light reflected by the blade to conduct imaging. Through cooperation between vertical movement of the measurement sensor on the workbench surface and rotation of the blade on the electric rotating platform arranged opposite to the measurement sensor, multipoint scanning imaging can be conducted on the axial upper portion and the axial lower portion of the blade and the two surfaces of the blade, and therefore the blade can be precisely and rapidly scanned and measured. The turbine blade visual inspection system achieves automatic blade detection, is high in work efficiency and high in measurement precision and greatly improves the detection efficiency of blade type parts.

Description

technical field [0001] The invention belongs to the field of visual detection, and in particular relates to a system and method for visual detection of blades. Background technique [0002] With the rapid development of the manufacturing industry, the product shape design is becoming increasingly complex, and complex surfaces are widely used in the engineering field. Among them, complex curved surfaces with variable cross-section are widely used in aero-engine blades, steam turbine blades, and marine propeller blades. [0003] Here, blade parts need to be inspected before processing is completed to ensure the accuracy of processing. For example, the final dimension inspection of aviation casting blades needs to measure the complex curved surface of the blades, compare the characteristic parameters with the product model, and evaluate the casting blades. However, such parts are difficult to process and inspect due to their strong distortion, thin-walled parts, easy deformat...

AI Technical Summary

Problems solved by technology

However, this system only realizes the measurement of each surface of the blade by driving the rotation of the blade, and for complex blades with changing cross-sections, it cannot obtain measurement data under multiple different cross-sections, and because of its multiple imaging systems, its The imaging coupling processing is more complicated, and the structure of the whole system is also more complicated; in addition, its imaging system is traditional imaging, which will cause loss of information collection accuracy of the blade, and cannot obtain high-precision measurement data

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