High flexibility, a wide range. The development of optical fiber technology allows the laser beam guided light and spectral technology is improving, three-dimensional stand the impact of forming can be achieved; and forming speed can be achieved without stamping; non-contact stamping, with a lot of flexibility, either a large plate of complex shape, but also local fine shape. Particularly suitable in local small curvature of the car in reverse drawing kimono-shaped panel forming. Forming accurate, high quality. As the laser shock controllable parameters, especially the spot size can be focused to a micrometer, they are able to achieve quantitative precision forming; form a hardened layer and the high rate of residual compressive stress in the material surface due to laser shock. The scanning system ofgreen laser pointer is the high-speed galvo scanner with large-angle scanning.
The presence of this high residual compressive stress substantially increased the stability of the sheet metal forming, almost no rebound. Can solve the small curvature forming the rebound problem. High efficiency, easy to automate production. The shock wave of the laser can be used for the forming of the local expansion of the sheet-shaped, flange, etc. as well as the flexible sheet leveling, and a variety of forming functional integration reduces equipment investment costs and the process of computer-controlled automated production line created conditions. Adaptable, forming parts tables of high quality. Before surface quality is lower than the conventional stamping process of sheet metal forming, after forming the surface roughness increased by 1-2 orders of magnitude. At the same time improve the quality of surface material impact. The flash disk transmission and single-chip machine control can be combined to design a new type ofgreen laser pointercontroller.
Such as to reduce the surface roughness, hardness, grain refinement, the workpiece anti-fatigue properties and stress corrosion resistance can be a substantial increase. Set of surface modification of materials to strengthen and shape in one particularly suitable for parts with anti-fatigue and stress corrosion requirements. The laser shock forming of sheet metal forming, but also bending and forming metal slab thickness of 10mm. Can also be cold stamping of high strength structural steel, titanium alloys and other materials, forming, bending, even for brittle materials to achieve brittle-plastic dynamic changes. Manufacture and application of high power lasers. The level of manufacturing and industrial applications of high-power solid-state lasers our l09W class behind foreign countries. The design of green laser pointer controller consists of the optical system, controller and driving circuit.
Laser shock forming a huge application market will promote China's high-power laser design, manufacture and application of a new stage, the formation of new economic growth point. The laser shock wave of the sheet metal forming is a new sheet of plastic forming technology, many prominent advantage is expected in the trial processing of a number of special areas and small and medium quantities of parts, showing a strong vitality, but also for sheet metal Flexible stamping conditions, it brings a lot of research areas with a great deal of theoretical research space and value. The current research work was started, according to practical engineering applications, there is a great gap, but as mentioned above. The respective advantages of the flash disk transmission and single-chip machine controlling of green laser pointer can be expressed completely.
The laser shock forming potentially great prospect, and this must be in the following areas for further research. High-power laser shock forming system development. The sheet deformation under laser shock Intelligent online measurement methods and techniques. Multiple / lap the impact of process parameters and the impact of route optimization. The laser shock forming research and to ensure dimensional accuracy and shape accuracy. The laser shock forming sheet technology and high strain rate deformation failure criteria. The impact of a large area of the forming process of the computer numerical simulation and control software. This kind of show is mainly specific to the green laser pointer scanning.
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