Title:
ELECTRICAL DISCHARGE MACHINING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2016/147327
Kind Code:
A1
Abstract:
An electrical discharge machining apparatus (100) comprises: power sources (1, 2) for outputting voltage to be applied across an electrode gap (5) between an electrode (3) and a workpiece (4); switches (9, 10) for switching the voltage that said power sources (1, 2) apply across said electrode gap on and off; a detection device (6) for detecting the state of discharge in the electrode gap (5) and outputting the detection results; and a control device (8) for controlling the switches (9, 10) using the detection results from the detection device (6) to control the voltage applied across the electrode gap (5), and, on the basis of changes in the state of discharge when a first discharge is generated in the electrode gap (5), determining the conditions for generating a second discharge across the electrode gap (5). Obtained thereby is an electrical discharge machining apparatus (100) for repeatedly performing a preliminary discharge and a main discharge with which the quality of the machined surface of a multi-element conjugate material can be improved.
Inventors:
SASAKI YUTO (JP)
Application Number:
PCT/JP2015/057963
Publication Date:
September 22, 2016
Filing Date:
March 17, 2015
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B23H1/02
Foreign References:
| JPS49108697A | 1974-10-16 | |||
| JP5409964B1 | 2014-02-05 | |||
| US20140083980A1 | 2014-03-27 | |||
| US4078163A | 1978-03-07 |
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
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