所谓对向液压成形法,是使液压缸内的对向液压作用代替凹模的作用,成形时液压缸内的液压把板料按凸模的形状以均等的压力压紧,按正确的凸模形状成形的方法。 这种成形法的特征是,极限拉伸比高,成形制品的尺寸精度高。在深拉伸加工中是提高L.D.R(极限拉伸比),提高生产率 The so-called counter-hydroforming method is to replace the effect of the counter-hydraulic effect in the hydraulic cylinder. When the forming process, the hydraulic pressure in the hydraulic cylinder presses the plate at the equal pressure according to the shape of the punch. Pressing the correct punch Shape forming method. This forming method is characterized by high ultimate drawing ratio and high dimensional accuracy of the shaped product. In the deep drawing process is to improve the L.D.R (ultimate draw ratio), increase productivity