Invention Grant
- Patent Title: Electromagnetic shape calibration of tubes
- Patent Title (中): 管的电磁形状校准
-
Application No.: US12434703Application Date: 2009-05-04
-
Publication No.: US08099989B2Publication Date: 2012-01-24
- Inventor: John R. Bradley , Michael H. Lovell , Kevin R. Marks , Terry A. Kent , Donald W Cotton
- Applicant: John R. Bradley , Michael H. Lovell , Kevin R. Marks , Terry A. Kent , Donald W Cotton
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Reising Ethington P.C.
- Main IPC: B21D39/00
- IPC: B21D39/00 ; B23P17/00

Abstract:
Articles are often formed from a tubular workpiece in a process which does not usefully shape the ends of the tube. In an embodiment of the invention, tube ends may be mechanically reduced in cross section and then expanded against a secondary forming surface(s) using an electromagnetic force to obtain desired shapes for the tube ends and minimize scrapping of workpiece material.
Public/Granted literature
- US20100024503A1 Electromagnetic shape calibration of tubes Public/Granted day:2010-02-04
Information query