渐进成形技术是近年发展起来的一种新的板料成形方法,将该技术应用到激光拼焊板成形领域的研究还很少。以某圆台零件为研究对象,建立了激光拼焊板有限元模型。通过正交试验研究了工具头直径、下压量、拼焊板焊缝位置和板厚组合对激光拼焊板的成形性能的影响。结果表明,焊缝位置对激光拼焊板成形极限的影响最为显著,其次为下压量、板厚组合和工具头直径,并得出了最优工艺参数组合。在保证零件加工精度及满足设备成形能力的前提下,尽量提高下压量不仅有助于提高激光拼焊板成形效率,还能有效提高成形极限。结果能为渐进成形工艺参数的选择提供参考。 Progressive forming technology is a new sheet metal forming method developed in recent years. The application of this technology to the field of laser tailor welded plate forming is still rare. Taking a certain truncated cone as the research object, a finite element model of the tailor welded blank is established. Orthogonal experiments were carried out to study the influence of the tool head diameter, the amount of down-press, the position of the tailor welded plate and the thickness of the plate on the formability of the tailor welded plate. The results show that the location of the weld seam has the most significant influence on the forming limit of the tailor-welded blanks, followed by the amount of press-down, the thickness of the sheet and the diameter of the tool head, and the optimum combination of the technological parameters is obtained. On the premise of ensuring the machining precision of the part and meeting the equipment forming ability, it is not only helpful to improve the forming efficiency of the laser tailor welded plate, but also to raise the forming limit effectively. The results can provide reference for the choice of progressive forming process parameters.