公开(公告)号：US20060112558A1

公开(公告)日：2006-06-01

申请号：US10999177

申请日：2004-11-29

申请人： Patrick Lorenz ,  Robert Johnson ,  Karl Klankowski ,  Curtis Hoehn ,  Robert Sugg

发明人： Patrick Lorenz ,  Robert Johnson ,  Karl Klankowski ,  Curtis Hoehn ,  Robert Sugg

IPC分类号： B21K1/16 ,  B21D51/16

CPC分类号： B21C1/24 ,  Y10T29/49435

摘要： A method for manufacturing a tube with varying wall thickness includes the step of drawing a tube over a generally cylindrical mandrel having an outer diameter that fluctuates along the length of the mandrel between a first diameter and a second diameter. The tube is drawn over the mandrel to form a tube wall having a thickness that fluctuates along the length of the tube between a first wall thickness and a second wall thickness. After the tube is drawn over the mandrel, the mandrel is removed from the tube. The outer surface of the tube may be finished to form a substantially uniform outer diameter along the length of the tube.

摘要翻译： 用于制造具有变化的壁厚的管的方法包括在大致圆柱形的心轴上拉制管的步骤，该心轴的外径沿心轴的长度在第一直径和第二直径之间波动。 管被拉过心轴以形成管壁，其具有在第一壁厚和第二壁厚之间沿着管的长度波动的厚度。 将管拉出心轴之后，从管中取出心轴。 管的外表面可以被精加工以沿着管的长度形成基本均匀的外径。