A multi-point laser shock forming device and forming method

Abstract

The invention relates to the technical field of laser shock forming, in particular to a multi-point laser shock forming device and method. According to the structure of the multi-point laser shock forming device, a laser device group is composed of a plurality of independent single pulse laser devices, each pulse laser device is independently controlled by a laser device control system, and the pulse laser devices can send laser beams with same or different parameters at the same time; the pulse laser devices are arranged in the two-dimension plane, a workpiece clamping system is used for fixing a workpiece, and the workpiece can receive laser shocks; and a workbench is used for bearing a to-be-machined workpiece. According to the provided multi-point laser forming technology, the multiplelaser devices are integrated for simultaneous operation, the principle of the forming effect is decided through laser parameters, the individual laser devices generate local deformation at corresponding acting sites, parallel stacking is conducted, then, integral panel forming can be achieved, and local bulging, bending, panel veneer leveling, profiling and other forming machining of metal materials, inorganic materials, high molecular materials, composite materials and the like can be achieved.

Description

technical field [0001] The invention relates to the technical field of laser shock forming, in particular to a multi-point laser shock forming device and a forming method. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] Plastic forming of sheet metal plays an important role in the automotive industry, aerospace and other fields. At present, the commonly used metal sheet forming method at home and abroad is stamping forming, which realizes the precise forming of the sheet through the cooperation of the punch movement and the mold, but it has the disadvantages of high mold cost, long production cycle, low efficiency, and limited processing materials. [0004]...

AI Technical Summary

Problems solved by technology

However, the inventors found that although this method can efficiently achieve plastic deformation and local fine deformation of materials, the point-by-point impact method is too inefficient for large-area forming.

Moreover, since the laser energy usually has a Gaussian distribution, it still has a radiation effect on the material at the periphery of the light spot. The hardening of the material caused by the previous impact is likely to affect the forming effect of the second impact, and the shape changes such as bending of the plate caused by the impact are also increased. The difficulty of secondary impact is increased. For workpieces with complex shapes, the processing technology is cumbersome and the forming accuracy is also affected.

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