Blade shape rapid scanning device and method

Abstract

The invention discloses a blade shape rapid scanning device and method. The device includes a base, an X main shaft, a Y main shaft, a Z main shaft, a turntable, a noncontact optical probe and a contact probe; the X, Y, Z main shafts and the turntable are arranged on the base; wherein the X, Y, Z main shafts are used to drive the probes to move freely in the space X, Y and Z; the turntable is used to drive a blade to rotate in the measuring space; the non-contact optical probe and the contact probe are commonly mounted on the Y main shaft through a connecting member; the non-contact optical probe is used to measure the blade surface with low precision, obtains all the point cloud data of the blade and plans the measuring path; and the contact probe is used for high-precision measurement of the blade surface along a well-planned measuring path.

Description

technical field [0001] The invention belongs to the field of advanced measurement technology, and relates to a fast and high-precision measurement method for blade shape, in particular a method combining contact measurement and non-contact measurement. Background technique [0002] The aeroengine is the heart of the aircraft and determines the main performance indicators of the aircraft. Aeroengines are mainly composed of fan rotors, compressor rotors, turbine rotors, and main shafts. Each stage of rotor is composed of hundreds of blades, and there can be as many as tens of thousands of blades in the whole machine. These blades have various shapes and materials. Directly affect the performance index of the engine. therefore. The design, manufacture, and maintenance of blades are the core technologies of the modern aviation industry, and it must be equipped with a complete set of efficient and reliable quality inspection methods and processes. [0003] However, the existin...

AI Technical Summary

Problems solved by technology

[0003] However, the existing blade detection methods of enterprises are difficult to meet the needs of actual production. Most enterprises still use the technology formed in the 1980s, such as artificial templates, tool microscopes, analog optical tracking instruments and other traditional equipment and technical means, which are not accurate enough. Low detection efficiency

At present, three coordinate measuring machines (CMM) have been equipped in enterprises, but their weaknesses are high cost, complicated operation, and time-consuming, and they rely heavily on the original CAD model of the blade at the beginning of the measurement.

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