METHOD AND ARRANGEMENT FOR THE ELECTROCHEMICAL MACHINING OF A WORKPIECE

Title:

METHOD AND ARRANGEMENT FOR THE ELECTROCHEMICAL MACHINING OF A WORKPIECE

Document Type and Number:

WIPO Patent Application WO1999051381

Kind Code:

A3

Abstract:

In a method for electrochemical machining the working distance (dw) is set by contacting the workpiece (2) with the electrode (3) (phase I), increasing the distance between the workpiece (2) and the electrode (3) by a first distance (d1) (phases II-III), detecting whether the contact between the electrode (3) and the workpiece (2) is broken (phase IV), and further increasing the distance between the workpiece (2) and the electrode (3) by a second distance (d2). Owing to this method very small working distances can be set with a limited risk of short-circuiting and flash-over.

Inventors:

ALTENA HERMANUS S J
BRUSSEE MAARTEN
BOORSMA ANTON M
KRAMER FOPPE

Application Number:

PCT/IB1999/000515

Publication Date:

November 18, 1999

Filing Date:

March 25, 1999

Export Citation:

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Assignee:

KONINKL PHILIPS ELECTRONICS NV (NL)
PHILIPS SVENSKA AB (SE)

International Classes:

B23H3/02; B23H7/16; B23H7/18; (IPC1-7): B23H3/02; B23H7/16; B23H7/18

Foreign References:

US4264417A	1981-04-28
SU1815038A1

Other References:

K.P. RAJURKAR ET AL.: "Modelling and monitoring interelectrode gap in pulse electrochemical machining", ANNALS OF THE CIRP, vol. 44, January 1995 (1995-01-01), USA, pages 179
A.K.M. DE SILVA ET AL.: "Process monitoring of electrochemical micromachining", JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, vol. 76, no. 1-3, April 1998 (1998-04-01), SWITZERLAND, pages 165 - 169

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