Method and device based on laser shock multi-point compound forming

Abstract

The invention relates to the field of machinery manufacturing, in particular to a method and a device for laser shock multi-point compound forming. The method utilizes shock waves induced by laser as a forming force source, and adopts a discrete multi-point die as a female die or a male die to realize laser shock female die profile modeling or prestress shock forming. The device comprises a laser generator, a light guide system, a laser shocking head, a multi-point die system and a control system, and is provided with a detection feedback system with a displacement measuring device. According to a curved surface shape of a plate and the requirement of a forming rule, laser shock process parameters are optimized, the height of an element group of the multi-point die is adjusted, and the plate is deformed under the combined action of the shock waves and the multi-point die. The method and the device are particularly suitable for precision shock forming of metal plates with large deformation and large area, especially the forming of plates with complicated curved surface shapes.

Description

technical field [0001] The present invention relates to the field of mechanical manufacturing, in particular to a method and device for laser shock multi-point compound forming, which is suitable for precision impact forming of large deformation and large-area complex curved surfaces of sheet metal, and is also suitable for microprocessing of sheet metal Forming is especially suitable for materials that are difficult to form or cannot be formed at all by conventional methods, such as structural steel, magnesium alloys, titanium alloys, composite materials, etc. Background technique [0002] Sheet metal forming, as the main deep processing method before the sheet is directly put into consumption, has occupied a very important position in the entire national economy. For some small-batch, high-quality multi-curvature workpieces, such as aircraft skins, prototype vehicle covers, ship hulls, and pressure vessel shells, the requirements for rapid and economical forming methods ar...

AI Technical Summary

Problems solved by technology

Its disadvantages are: because there is no blank holder in the forming process of the plate, it is prone to wrinkling, instability, and quality problems of scratches.

It can save half of the mold, but the disadvantage is that the traditional mold is still needed, the design and manufacturing cost of the mold is high, the preparation period is long, the processing is still not flexible enough, and it can only be adapted to the forming of a single shape

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