Title:
FINE HOLE ELECTRICAL DISCHARGE MACHINE
Document Type and Number:
WIPO Patent Application WO/2016/157431
Kind Code:
A1
Abstract:
This fine hole electrical discharge machine (100) applies voltage between a fine hole machining electrode (116) and a workpiece (130) to cause discharge, and machines a fine hole in the workpiece by using energy of the discharge. The fine hole electrical discharge machine (100) comprises: a bendable guide tube (18) having a hollow portion through which the electrode (116) is inserted; and a tube holder (20) that supports the leading end of the guide tube (18) and allows the leading end of the guide tube (18) to be inclined at a desired angle. Thus, even when the workpiece has a complicated shape, like a blisk, having a large number of turbine blades arranged in the circumferential direction, a fine hole can be machined by accurately positioning the electrode so as to orient the electrode toward a target machining point on a surface of the workpiece without involving interference with the workpiece.
Inventors:
NAGASE TOMOHIRO (JP)
Application Number:
PCT/JP2015/060187
Publication Date:
October 06, 2016
Filing Date:
March 31, 2015
Export Citation:
Assignee:
MAKINO MILLING MACHINE (JP)
International Classes:
B23H3/04; B23H9/14
Foreign References:
| JP2013544195A | 2013-12-12 | |||
| JP2008302459A | 2008-12-18 | |||
| JP2006175568A | 2006-07-06 | |||
| JPH071246A | 1995-01-06 | |||
| JPS50140992A | 1975-11-12 | |||
| US20090134136A1 | 2009-05-28 |
Other References:
See also references of EP 3278916A4
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Aoki 篤 (JP)
Aoki 篤 (JP)
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