Light path device and method for laser peening forming of large workpiece

Abstract

The invention discloses a light path device and method for laser peening forming of a large workpiece. The light path device comprises a laser device, a dynamic focusing and shape righting system, a scanning galvanometer system, the formed workpiece, a computer, a laser control card and a movement control card. The laser control card is connected with the laser device and is used for controlling starting of the laser device and various parameters of laser. The movement control card is connected with the dynamic focusing and shape righting system and the scanning galvanometer system. Both the laser control card and the movement control card are controlled by the computer. The dynamic focusing and shape righting system and the scanning galvanometer system are controlled by the computer to make corresponding movement after a specific shot blasting path is given, the shape of the section and the focusing position of a high-energy pulse laser beam are changed after the high-energy pulse laser beam emitted by the laser device passes through the dynamic focusing and shape righting system, and then the high-energy pulse laser beam points to a specific emergent direction after passing through the scanning galvanometer system, so that scanning and shot blasting on the large workpiece by laser are achieved through continuous movement of the dynamic focusing and shape righting system and the scanning galvanometer system.

Description

technical field [0001] The invention relates to the field of mechanical manufacturing, in particular to a laser shot peening optical path device and method based on a high-energy pulsed laser, which can be effectively applied to the laser shot peening of difficult-to-move large plates through laser scanning focusing and target surface spot correction. Background technique [0002] Large sheet forming has a wide range of applications in aerospace and defense, such as aircraft wings, skins, turbine engine blades, and more. In order for these large workpieces to work stably and efficiently in harsh environments, they are usually designed in a variety of complex shapes. In the production process, while satisfying their complex shapes, it is also necessary to ensure sufficient mechanical properties. [0003] For such panels, the traditional processing method is mechanical shot peening. This is a forming method that uses high-speed projectile flow to hit the metal surface, so th...

AI Technical Summary

Problems solved by technology

However, its disadvantages are: first, the telescope system and the Stokes lens group in the light guide system are independent of each other, the number of lenses is large, and the composition is not simple; difficulty

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