激光圆弧扫描弯曲可实现圆弧槽形舱壁件无模具成形, 研究其曲面变形规律以及其曲面变形特征具有重要的工程应用意义。首先, 详细分析了扫描次数n、圆弧扫描半径R、板材宽度W以及扫描基准线至自由端长度L对矩形金属层合板曲面变形的影响。同时, 结合各参数对曲面变形作用效果及曲面变形量试验测量数据, 求得各参数下曲面变形量经验函数, 并对其变化规律及趋势进行分析。最后, 利用激光圆弧扫描弯曲策略进行了圆弧槽形舱壁件样件试制, 其中单段圆弧槽两侧壁曲率半径均值分别为84.51、86.77 mm。文中方法为矩形金属层合板激光圆弧扫描弯曲曲面变形规律分析及成形圆弧槽形样件提供了试验依据。

Circular groove bulkhead can be finished by laser circular scanning without mould. Therefore, research of the curved surface deformation rule and characteristics was of important significance for engineering applications. Firstly, the influence of the scanning number n, the circular scanning radius R, the plates′ width W and the length from baseline to the free end L on the curved surface deformation were analyzed in detail. Secondly, combining with the effect of various parameters on the surface deformation and surface deformation test measurement data, obtained surface deformation experience function about the parameters. Then the surface deformation change rule and trend were analyzed. Finally, the strategy of laser circular scanning has obtained the circular groove bulkhead samples and its two side wall of the mean curvature radius are 84.51 mm and 86.77 mm respectively. This study lays a solid foundation of both the circular groove structure and the double circular grooved structure by laser circular scanning.