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:
Nov. 20, 2001
Filed:
Nov. 30, 1999
Applicant:
Inventors:
Stefano Angelella, Quartino, CH;
Rino D'Amario, Taverne, CH;
Assignee:
AGIE SA, Losone, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23H 1/00 ; B23H 7/04 ;
U.S. Cl.
CPC ...
B23H 1/00 ; B23H 7/04 ;
Abstract
A method and apparatus for wire cutting electric discharge machining to achieve precise surfaces with R,<0.1 microns. An intermittent operation is used with erosion pulses for primarily machining and erosion pulses for measuring any excursion of the wire electrode from the rest position. An evaluation unit is used to determine any excursions of the wire electrode from the rest position that might have been present during the preceding machining time, and a controller controls the machining process so that the wire electrode is practically straight during electroerosion.