公开(公告)号：US5090611A

公开(公告)日：1992-02-25

申请号：US675522

申请日：1991-03-26

申请人： Kazunori Takikawa ,  Kazumi Fukaya ,  Jun Ohbu ,  Yasushi Yagi

发明人： Kazunori Takikawa ,  Kazumi Fukaya ,  Jun Ohbu ,  Yasushi Yagi

IPC分类号： F02M55/02 ,  B21B19/08 ,  B21C37/28 ,  B21C37/29 ,  B21D19/08 ,  B21K21/12 ,  B23K33/00 ,  F02M69/46 ,  F16L41/08

CPC分类号： F02M69/465 ,  B21C37/28 ,  B21C37/292 ,  B21K21/12 ,  B23K33/006 ,  Y10T29/49442

摘要： An improved method of making a cross joint between different size pipes is provided. A punch, die and a pressing machine are prepared. The punch includes a center rest for receiving a small pipe, a curved slot and a curved surface for transforming an end of the small pipe. Under the actuation of the pressing machine, the end of the small pipe is transformed into an arcuate configuration which is identical with the inside curvature of a large pipe. Simultaneously, a curved bead is formed on the small pipe remaining circumferentially equal distances from the resultant arcuate edge of the small pipe. This distance is substantially the same as the wall thickness of the large pipe. Utilizing the arcuate edge and the curved bead, the small pipe and the large pipe are welded or brazed together, resulting in a cross joint having no protrusion into the large pipe space.

摘要翻译： 提供了一种在不同尺寸的管之间制造十字接头的改进方法。 准备冲压机，模具和压力机。 冲头包括用于接收小管的中心托架，弯曲的槽和用于转换小管的一端的弯曲表面。 在压力机的致动下，小管的端部变成与大管的内部曲率相同的弓形构造。 同时，在小管上形成弯曲的珠，与小管的合成弧形边缘保持圆周等距离。 该距离与大管的壁厚基本相同。 利用弧形边缘和弯曲的凸缘，小管和大管被焊接或钎焊在一起，导致在大管道空间中没有突出的十字接头。