Title:
WIRE ELECTRIC DISCHARGE MACHINING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/129043
Kind Code:
A1
Abstract:
In order to obtain a wire electric discharge machining device capable of detecting contact between a wire electrode and a contact detection target without impacting the resistance value of the wire, the present invention provides a wire electric discharge machining device for imparting a pulse voltage between a wire electrode (P) and a workpiece (W) while moving the wire electrode (P) and the workpiece (W) relative to one another, the wire electric discharge machining device being equipped with: a power source (1) for imparting a rectangular AC signal to the wire electrode (P); a capacitor (C) and a shunt resistance (R3) connected in series with the target (workpiece (W)) contacting the wire electrode (P); and a contact detection unit (8) for detecting contact between the wire electrode (P) and the workpiece (W) by detecting a change in the voltage imparted to the shunt resistance (R3).
Inventors:
SEKIMOTO DAISUKE (JP)
YAMADA KUNIHIRO (JP)
YAMADA KUNIHIRO (JP)
Application Number:
PCT/JP2014/055154
Publication Date:
September 03, 2015
Filing Date:
February 28, 2014
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
B23H7/04; B23H7/02
Foreign References:
| JPS60135127A | 1985-07-18 | |||
| JPS6311220A | 1988-01-18 | |||
| JPS3720892Y1 | ||||
| JP2010052092A | 2010-03-11 | |||
| JP2013129048A | 2013-07-04 |
Attorney, Agent or Firm:
SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)
Hiroaki Sakai (JP)
Download PDF: