Modularization type material addition and reduction composite repairing method for defective region of component surface

A composite repair and modular technology, applied in the field of mechanical processing, can solve problems such as preprocessing of the area to be repaired, etc., and achieve the effects of improving repair efficiency and repair quality, convenient and fast path planning, and simple shape.
CN110640146AActive Publication Date: 2020-01-03NANJING INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING INST OF TECH
Publication Date
2020-01-03

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Abstract

The invention provides a modularization type material addition and reduction composite repairing method for a defective region of a component surface and relates to the technical field of machining. The main process of the method comprises the following steps of: implementing three-dimensional scanning on the defective region of the component surface and acquiring point cloud data of a to-be-repaired region; calculating the characteristic parameters of the defective region according to the point cloud data; selecting a corresponding geometric module according to the characteristic parameters;implementing modular milling and removal on the defective region to obtain a regular to-be-repaired region; implementing modular laser melt-coating repairing on the to-be-repaired region; and precisely milling the laser-repaired surface to end the repairing. By adopting a material addition and reduction composite way, the method provided by the invention repairs a complicated irregular defective appearance into a regular geometry; on the basis, the modular to-be-repaired geometry is subjected to laser melt-coating repairing; and the operation route is conveniently and quickly planned, so the overall repairing efficiency is improved. Beside, the precise milling for the laser melt-coating region can maintain the repairing precision of the contour of the repaired surface, and the use performance of the repaired surface is also improved.
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Description

technical field

[0001] The invention relates to the technical field of mechanical processing, in particular to the technical field of a composite repair method for adding and subtracting materials to defect areas on the surface of parts. Background technique

[0002] Some overcuts and damages on the surface of precious parts such as aircraft structural parts, engine parts, precision gears and metal molds during the manufacturing process lead to scrapping. Or after these parts have been used for a period of time, the bearing surface or contact area will also be damaged to varying degrees, making the parts unable to continue to be used. Because these parts are generally more expensive, the production process is also more complicated, because some surface damage results in the scrapping of the entire part, often causing great economic losses and waste of resources.

[0003] With the advancement of material technology and laser technology, laser sintering-based additive manuf...

Claims

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