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:
Apr. 04, 1995
Filed:
Aug. 10, 1993
Edward D Bennett, Pompano, FL (US);
Other;
Abstract
A method of electrical discharge machining a curvature onto the cutting edge of a punch or die. An electrode has a cross-section that is identical in shape as the cross-section of the punch or an opening of the die to be machined. The electrode is centered relative to the punch or die; an electrical charge is applied to the electrode; the electrode is moved in a small orbital path, without changing the orientation of the electrode; and the electrode is translated along its axis while simultaneously varying the diameter of the orbital path of the electrode in time relation with the translation of the electrode along its axis, thereby electrical discharge machining the curvature onto the cutting edge of the punch or die.