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一、薄板的深拉深 所谓薄板是指毛坯的直径和厚度的相对关系,如用t/D×100来表示,大致以1.0以上称为厚板,以下的称为薄板。为何要决定1.0的数值呢?这是为了在进行重复拉深时确定是否有必要设置压边圈的界限。在第二次拉深时皱纹的发生,是由于拉深率大小而不同,但是因为在进行单件的再拉深和顺序送进的再拉深时,拉深率的选择方法也不一
First, the deep drawing of the so-called sheet The so-called sheet refers to the relative relationship between the diameter and thickness of the blank, such as the use of t / D × 100 to indicate that roughly 1.0 or more as thick, hereinafter referred to as the sheet. Why do you decide the value of 1.0? This is to determine if it is necessary to set the limit of the blank holder when performing a deep drawing. In the second drawing, the occurrence of wrinkles is different depending on the drawing rate, but the method of selecting the drawing rate is different from that of the single drawing and the second drawing