公开(公告)号：US20200078843A1

公开(公告)日：2020-03-12

申请号：US16126550

申请日：2018-09-10

申请人： Amsted Rail Company, Inc.

发明人： Brian Ford ,  James Myers ,  Edgar Hernandez

IPC分类号： B21C37/08 ,  B21D22/02 ,  B21D31/00 ,  B21D51/10 ,  B21D53/16

摘要： A method for manufacturing a ring includes clamping a first region of a metal sheet against a mandrel, and, while the first region of the metal sheet is clamped against the mandrel, bending the metal sheet around the mandrel to join opposite end faces of the metal sheet and form the ring shaped to the mandrel. A system for manufacturing a ring from a metal sheet includes (a) a mandrel having a ring-shaped surface, (b) a clamp facing the ring-shaped surface and configured to clamp a first region of a metal sheet to the mandrel, and (c) a plurality of dies configured to bend the metal sheet around the mandrel, while the clamp clamps the first region to the mandrel, to join opposite end faces of the metal sheet and form a ring shaped to the ring-shaped surface.

公开(公告)号：US11207722B2

公开(公告)日：2021-12-28

申请号：US16126550

申请日：2018-09-10

申请人： Amsted Rail Company, Inc.

发明人： Brian Ford ,  James Myers ,  Edgar Hernandez

IPC分类号： B21C37/08 ,  B21D22/02 ,  B21D51/10 ,  B21D53/16 ,  B21D31/00 ,  B21D11/20

摘要： A method for manufacturing a ring includes clamping a first region of a metal sheet against a mandrel, and, while the first region of the metal sheet is clamped against the mandrel, bending the metal sheet around the mandrel to join opposite end faces of the metal sheet and form the ring shaped to the mandrel. A system for manufacturing a ring from a metal sheet includes (a) a mandrel having a ring-shaped surface, (b) a clamp facing the ring-shaped surface and configured to clamp a first region of a metal sheet to the mandrel, and (c) a plurality of dies configured to bend the metal sheet around the mandrel, while the clamp clamps the first region to the mandrel, to join opposite end faces of the metal sheet and form a ring shaped to the ring-shaped surface.