A system for visual inspection of turbine blades

Abstract

The invention discloses a turbine blade visual inspection system, which comprises: a fuselage with a worktable on the upper part, a top cover arranged above the fuselage and covered on the workbench; an electric rotary table installed on the surface of the workbench, It is used to set the blade to be detected; and the electric translation platform, which is provided with a guide rail in the vertical direction, and the measurement sensor is arranged on the guide rail and can move up and down relative to the worktable; the measurement sensor has a laser that can emit measurement The laser that is incident on the blades and the camera used to capture the reflected light of the blades for imaging can realize the axis of the blades by moving up and down on the worktable and coordinating the rotation of the blades on the oppositely arranged electric rotary table. Multi-point scanning imaging of the upper, lower and both surfaces, thereby realizing accurate and fast scanning measurement of the blade. The invention realizes automatic blade detection, has high working efficiency and high measurement precision, and greatly improves the detection efficiency of blade 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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