The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2008
Filed:
Nov. 14, 2007
Tung-chen Cheng, Kaohsiung, TW;
Tzyy-ker Sue, Kaohsiung, TW;
Chi-keung Chung, Kaohsiung, TW;
Chun-chieh Wang, Kaohsiung, TW;
Hsing-ta Hsieh, Kaohsiung, TW;
Ming-fu LI, Kaohsiung, TW;
Tung-Chen Cheng, Kaohsiung, TW;
Tzyy-Ker Sue, Kaohsiung, TW;
Chi-Keung Chung, Kaohsiung, TW;
Chun-Chieh Wang, Kaohsiung, TW;
Hsing-Ta Hsieh, Kaohsiung, TW;
Ming-Fu Li, Kaohsiung, TW;
Metal Industries Research & Development Centre, Kaohsiung, TW;
Abstract
An electromagnetic forming device for a sheet of material is provided. The electromagnetic forming device includes a fixing base, a magnetic concentration block, an electromagnetic actuator, and a die. The fixing base has a groove. The magnetic concentration block is disposed in the groove of the fixing base, and has an accommodating space therein, which is in communication with a surface of the magnetic concentration block via a slit. The electromagnetic actuator, used to generate a magnetic field, is disposed in the accommodating space of the magnetic concentration block, but does not contact the magnetic concentration block. The die and the magnetic concentration block are separated by a gap, and a sheet of material can be disposed in the gap. As the magnetic concentration block is a block, eddy currents in the magnetic concentration block are distributed uniformly, so the generated magnetic field is also distributed uniformly, thus exerting a uniform forming force on the sheet of material.