Workpiece laser automatic repair method

Abstract

The invention relates to a workpiece laser automatic repair method which comprises the following steps: 1) carrying out three-dimensional molding surface on-line scanning on the workpiece by a laser 3D scanner to obtain spatial sampling points on the workpiece surface, namely three-dimensional point cloud data; 2) carrying out coordinate transformation on the spatial sampling points obtained by scanning, and reconstructing a three-dimensional workpiece surface point set in a repair actuating mechanism coordinate system; 3) carrying out image processing on the point cloud data obtained in the step 1), and extracting boundary contour of the workpiece; 4) generating a laser cladding trajectory according to the boundary contour of the workpiece; 5) converting the laser cladding trajectory into machine recognition codes, and storing in a repair actuating mechanism; and 6) carrying out automatic repair on the workpiece according to the laser cladding trajectory by the repair actuating mechanism. Compared with the prior art, the method enhances the production efficiency, saves the time cost, implements mass production and the like.

Description

technical field [0001] The invention relates to a laser repair method, in particular to a laser automatic repair method for workpieces. Background technique [0002] There are a large number of high-performance, high-value-added metal parts in industrial products that need to be repaired, such as turbine blades of gas turbines and aircraft engines, oil drilling tools, injection molding or stamping dies, rolls, knives, etc. The key components of these high-performance materials are often the weak links that determine the life cycle life of the entire machine equipment. Using advanced detection and repair technology to automatically repair defective and damaged parts, so that they can meet the requirements of industrial equipment and prolong their service life, can obtain considerable technical and economic benefits. Taking the turbine blade as an example, due to its harsh working environment, the material used is often a nickel-based superalloy with excellent performance. Th...

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Problems solved by technology

[0008] The purpose of the present invention is to provide an automatic repair method in order to overcome the defects in the above-mentioned prior art, to solve the problems of low repair efficiency and low repair quality and precision of the net shape repair system in the prior art, thereby improving production efficiency , save time and cost, realize mass production and processing, and complete automatic repair of workpieces

The invention focuses on solving the problems of three-dimensional surface scanning, image processing, and laser cladding trajectory generation

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