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时效成形中,回弹补偿方向与实际方向相差较大时,仅调节补偿系数很难提高补偿精度。针对该问题,文章综合考虑补偿方向和补偿系数对补偿精度的影响,提出了网格节点综合调整法。以T形梁和井字形整体壁板为研究对象进行仿真实验,对模具进行不同补偿方向的多次补偿。并对带口盖复杂零件进行补偿仿真,三次补偿后即得到理想型面。采用双十字件进行实验验证。结果表明,相比于其他补偿方法,网格节点综合调整法补偿速度快,精度高,可以用于复杂壁板零件的回弹补偿。
In the aging forming, when the direction of rebound compensation is different from the actual direction, it is difficult to improve the compensation accuracy only by adjusting the compensation coefficient. Aiming at this problem, the paper synthetically considers the influence of compensation direction and compensation coefficient on compensation accuracy, and puts forward a method of comprehensive adjustment of grid nodes. T-shaped beam and the well-shaped monolithic wall as the research object of the simulation experiment, the mold compensation for multiple compensation directions. And the cover with complex parts to compensate for the simulation, after three compensation to get the ideal profile. Double cross used for experimental verification. The results show that, compared with other compensation methods, the grid node comprehensive adjustment method has the advantages of fast compensation and high precision, and can be used for springback compensation of complex wall parts.