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:
Dec. 08, 1998
Filed:
May. 09, 1997
Takashi Yuzawa, Tokyo, JP;
Takuji Magara, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An electric discharge machining apparatus and method are provided first having a data storage for storing initial machining conditions such as a two-dimensional outline path for a machined form, dimensions of the machined form, a feed rate in the axial direction of an electrode for a given movement of the tool electrode in the horizontal direction, and an interval period of inline measurement. In addition, the apparatus measures a machining depth at each interval period of inline measurement. The apparatus also computes machining parameters such as a machining depth for each machining pass, a number of remaining passes of machining which are to be executed, and also increments an outline offset according to the measured machining depth. An electrode position control then provides positional control of a tool electrode according to the computed machining parameters.