Title:
ワイヤ放電加工装置
Document Type and Number:
Japanese Patent JP5409964
Kind Code:
B1
Abstract:
A control unit controls an on/off operation of a switching unit such that a first DC pulse voltage is applied across an electrode gap from a pulse-voltage generation unit adjusted to a first impedance, and when a detection unit detects a preliminary discharge, a second DC pulse voltage is applied across the electrode gap from the pulse-voltage generation unit adjusted to a second impedance, which is lower than the first impedance, so as to generate a main discharge in the electrode gap, and during an idle time since the main discharge is completed until the next preliminary discharge is started, a third DC pulse voltage that is equal to or higher than a discharge arc voltage is applied across the electrode gap from the pulse-voltage generation unit adjusted to a third impedance, which is higher than the first impedance.
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Inventors:
Yuuki Sasaki
Application Number:
JP2013513892A
Publication Date:
February 05, 2014
Filing Date:
October 30, 2012
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
B23H1/02; B23H7/10
Domestic Patent References:
| JPH05269623A | 1993-10-19 | |||
| JP2005297164A | 2005-10-27 | |||
| JP2004050298A | 2004-02-19 | |||
| JPH08257839A | 1996-10-08 | |||
| JPH05269623A | 1993-10-19 | |||
| JP2005297164A | 2005-10-27 | |||
| JP2004050298A | 2004-02-19 | |||
| JPH08257839A | 1996-10-08 |
Foreign References:
| WO2009096026A1 | 2009-08-06 | |||
| WO2009096026A1 | 2009-08-06 |
Attorney, Agent or Firm:
Hiroaki Sakai