论文部分内容阅读
对方孔翻边进行了工艺试验 ,提出了获得所需要的翻边高度且平齐一致的空心方孔件预加工小孔的形状、尺寸的方法和公式
The other side of the hole flanging process tests were made to obtain the required flange height and flush uniform hole preform hole shape and size of the method and formula