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1. 发明申请

US20140360002A1 METHOD OF FORMING PIPE END STRUCTURE 审中-公开
标题翻译：管端结构方法
公开(公告)号：US20140360002A1
公开(公告)日：2014-12-11
申请号：US14146813
申请日：2014-01-03
申请人： SHINKO PIPE KOGYO KABUSHIKI KAISHA
发明人： Kenichi MORI
IPC分类号： B21D39/04
CPC分类号： B21D39/046 , B21K25/00 , Y10T29/49908
摘要： A method of forming a pipe end structure includes providing a pipe assembly including a metal pipe blank, a ridge, and a tubular fitting, and pressing an inner surface of the pipe blank outwardly. The ridge protrudes outward from an outer surface of the pipe blank. The fitting includes a threaded portion having a thread on an outer surface thereof. The fitting has a first edge and a second edge and is fitted over the pipe blank with the first edge of the fitting being in contact with the ridge protruding from the pipe blank. An inner surface of the pipe blank is pressed outwardly such that a part of the pipe blank protrudes from an outer surface of the pipe blank outwardly at a position adjacent to the second edge of the fitting, thereby forming a locking portion that is in contact with the second edge of the fitting.
摘要翻译：一种形成管端结构的方法包括提供一种管组件，其包括金属管坯，脊和管件，并向外挤压管坯的内表面。脊从管坯的外表面向外突出。配件包括在其外表面上具有螺纹的螺纹部分。配件具有第一边缘和第二边缘，并且被配合在管坯上方，配件的第一边缘与从管坯突出的脊部接触。管坯的内表面被向外挤压，使得管坯的一部分从管坯的外表面向外突出于与配件的第二边缘相邻的位置，由此形成与配件的第二个边缘。

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