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1. 发明公开

EP0199246A3 Method for plastically deforming elongated hollow members 失效
标题翻译：用于塑性变形长圆形中空构件的方法
公开(公告)号：EP0199246A3
公开(公告)日：1987-08-19
申请号：EP86105121
申请日：1986-04-14
申请人： ALUMINUM COMPANY OF AMERICA
发明人： Evert, Robert Paul , Miller, James Albert
IPC分类号： B21D25/02
CPC分类号： B21D26/045 , B21D25/02
摘要： A novel and improved method of deforming elongated. hollow members so as to maintan uniform cross-sectional profile, uniform section thickness reduction, and minimal springback characteristics which includes superimposing in the forming process an internal fluid pressure support for the hollow member which imposes a circumferential tension thereon, a longitudinal tension which plastically elongates the member, and a transverse bending load which plastically bends the member.

2. 发明授权

EP0199246B1 Method for plastically deforming elongated hollow members 失效
标题翻译：用于塑性变形长圆形中空构件的方法
公开(公告)号：EP0199246B1
公开(公告)日：1989-07-12
申请号：EP86105121.7
申请日：1986-04-14
申请人： ALUMINUM COMPANY OF AMERICA
发明人： Evert, Robert Paul , Miller, James Albert
IPC分类号： B21D25/02
CPC分类号： B21D26/045 , B21D25/02

3. 发明公开

EP0199246A2 Method for plastically deforming elongated hollow members 失效
标题翻译：一种用于细长的中空部件的塑性变形方法。
公开(公告)号：EP0199246A2
公开(公告)日：1986-10-29
申请号：EP86105121.7
申请日：1986-04-14
申请人： ALUMINUM COMPANY OF AMERICA
发明人： Evert, Robert Paul , Miller, James Albert
IPC分类号： B21D25/02
CPC分类号： B21D26/045 , B21D25/02
摘要： A novel and improved method of deforming elongated. hollow members so as to maintan uniform cross-sectional profile, uniform section thickness reduction, and minimal springback characteristics which includes superimposing in the forming process an internal fluid pressure support for the hollow member which imposes a circumferential tension thereon, a longitudinal tension which plastically elongates the member, and a transverse bending load which plastically bends the member.

4. 发明公开

EP0195408A2 Improved flexible mandrel for bending hollow articles 失效
标题翻译： Flexibler Dorn zum Biegen hohlerGegenstände。
公开(公告)号：EP0195408A2
公开(公告)日：1986-09-24
申请号：EP86103646.5
申请日：1986-03-18
申请人： ALUMINUM COMPANY OF AMERICA
发明人： Klingensmith, James Donald , Evert, Robert Paul
IPC分类号： B21D9/01
CPC分类号： B21D9/01
摘要： The invention comprises a flexible mandrel for insertion into and removal from a hollow member, said mandrel being adapted to provide support for the walls of the hollow member in the process of bending the member, the mandrel comprising a plurality of elongated individual hoses disposed together in a side-by-side manner to form a unitary, elongated mandrel structure, said hoses being capable of expanding in cross section when a fluid is directed to them under pressure at a predetermined pressure value and contracting in cross section when the pressure value is lowered to or below a predetermined value, the cross-sectional expansion and contraction of the hoses being effective to expand and contract the cross-sectional area of the mandrel structure.
摘要翻译：本发明包括用于插入中空构件和从中空构件移除的柔性心轴，所述心轴适于在弯曲构件的过程中为中空构件的壁提供支撑，心轴包括多个细长的独立软管，这些软管设置在一起并排地形成一体的细长心轴结构，当流体在压力下以预定压力值被引导到它们时，所述软管能够在横截面上膨胀并且当压力值降低时横截面收缩达到或低于预定值时，软管的横截面膨胀和收缩有效地扩展和收缩心轴结构的横截面积。

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