Processing method
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTomoaki Ihara
Life of this patent
Estimating the term…
Abstract
It is possible to improve heating efficiency of an end surface of an open trim edge. A processing method includes punching a steel plate to open a part of an end surface of the steel plate to form an open trim edge, and disposing a heating coil in a non-contact manner along the end surface of the open trim edge formed in the punching to sandwich the end surface of the open trim edge therebetween, and heating the end surface of the open trim edge by applying an alternating current to the heating coil to generate an induced electromotive force on the steel plate. A current direction of the heating coil disposed on one side of the end surface of the open trim edge is opposite to a current direction of the heating coil disposed on another side of the end surface of the open trim edge.
Claims10
A processing method comprising:
- punching a steel plate to open a part of an end surface of the steel plate to form an open trim edge;
- disposing a heating coil in a non-contact manner along the end surface of the open trim edge formed in the punching to sandwich the end surface of the open trim edge therebetween, so that the heating coil is disposed on a first side of the end surface of the open trim edge and on a second side of the end surface of the open trim edge;
- and
- heating the end surface of the open trim edge by applying an alternating current to the heating coil to generate an induced electromotive force on the steel plate, wherein
- a current direction of the heating coil that is disposed on the first side of the end surface of the open trim edge is opposite to a current direction of the heating coil that is disposed on the second side of the end surface of the open trim edge.
Dependencies are inferred from the claim text.