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A method and device for blade laser shot peening shape correction

A technology of laser peening and shape correction, which is applied to the laser peening and shape correction of blades and the field of laser peening shape correction, which can solve the problems of difficult to guarantee the accuracy of blades, difficult to accurately shape the shape, and easy to produce deformation, etc., to achieve improved effect, improve the fatigue life, and ensure the consistency of the effect

Active Publication Date: 2018-05-15
GUANGDONG UNIV OF TECH
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Problems solved by technology

The blade is a typical thin-walled structural part with variable cross-section. Its manufacturing accuracy directly determines the propulsion efficiency of the engine. During the processing, the accuracy of the blade is difficult to guarantee, and it is easy to deform. Therefore, it is necessary to correct the shape of the blade. The traditional shape correction Methods include hammering, thermal shaping, and mechanical shot peening, but the above methods are difficult to achieve accurate shaping, especially for thin-walled structural parts with variable cross-sections, such shaping methods are difficult to meet the requirements

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  • A method and device for blade laser shot peening shape correction
  • A method and device for blade laser shot peening shape correction
  • A method and device for blade laser shot peening shape correction

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Embodiment Construction

[0024] The details and working conditions of the specific device proposed by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] The method for blade laser shot peening correcting shape of the present invention comprises the following steps:

[0026] Step 1: Carry out three-dimensional scanning of the blade (6) with the help of a three-dimensional profile scanner (7), coordinate the three-dimensional results obtained from the actual test with the three-dimensional CAD model of the product, and calculate the distortion error and curvature error, which are respectively in accordance with the allowable The error is compared, and then the position and the amount of shape correction of laser shot peening are determined, and transmitted to the computer control system (1) through the data acquisition system (8);

[0027] Step 2: establish the one-to-one correspondence between the laser peening parameters and the blade twist ...

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Abstract

The invention discloses a method and device for blade laser peening shape correcting. The method is characterized in that a measurement model and a CAD module of a blade are aligned through a three-dimensional profile scanner at first, the torsion resistance error and the bending error of the blade are calculated correspondingly and are transmitted to a computer control system through a data collection system, a laser peening parameter and a shape correcting path are determined in a data mining mode, and torsion and bending shape correcting of the blade are achieved. The device for implementing the method comprises the computer control system, a laser device power source, a laser device, a transmitting mirror, an absorbing layer, the blade, the three-dimensional profile scanner, the data collection system, a water smearing robot, a water smearing robot control system, a blade part robot and a blade part robot control system. By means of the method and device for blade laser peening shape correcting, controlling over shape correcting of the blade can be achieved, the blade is subjected to precise shape correcting, the precision of shape correcting is high, and the device and the method are suitable for shape correcting of aircraft blades.

Description

technical field [0001] The invention relates to the technical field of laser shot peening shape correction technology, in particular to the field of laser shot peening shape correction treatment of blades, in particular to a method and device for laser shot peening shape correction of blades. Background technique [0002] The blade is an important part of an aero-engine, and the performance of the engine largely depends on the design and manufacturing level of the blade profile. The blade is a typical thin-walled structural part with variable cross-section. Its manufacturing accuracy directly determines the propulsion efficiency of the engine. During the processing, the accuracy of the blade is difficult to guarantee, and it is easy to deform. Therefore, it is necessary to correct the shape of the blade. The traditional shape correction Methods include hammering, thermal shaping, and mechanical shot peening, but the above methods are difficult to achieve accurate shaping, es...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D1/10
CPCB21D1/10
Inventor 张永康朱然王冠谢小柱
Owner GUANGDONG UNIV OF TECH
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