Title:
MACHINING POWER SOURCE OF WIRE ELECTRODISCHARGE MACHINEING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2003/106088
Kind Code:
A1
Abstract:
A machining power source of a wire electrodischarge machineing apparatus for applying the pulse voltage for inducing discharge between a wire electrode (E) and a work (W) to be machined, and applying the machining pulse voltage between the poles after the insulation between the poles is broken by the pulse voltage and the discharge is induced, thereby machining the work (W) This machining power source comprises a discharge state determining means (1a) for determining the discharge state between the poles, and an application voltage selecting means (1b) which inverts the polarity of the pulse voltage for inducing the discharge compared to that of the previous pulse voltage for inducing the discharge if the discharge state between the poles is determined to be abnormal (Y1) or open (Y3) by the discharge state determining means (1a), and sets the same polarity of the pulse voltage for inducing the discharge as the previous pulse voltage for inducing the discharge if the discharge state between the poles is determined to be normal (Y2). The can improve the machining efficiency.
Inventors:
KOBAYASHI HIROATSU (JP)
MAGARA TAKUJI (JP)
MAGARA TAKUJI (JP)
Application Number:
PCT/JP2002/005848
Publication Date:
December 24, 2003
Filing Date:
June 12, 2002
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
KOBAYASHI HIROATSU (JP)
MAGARA TAKUJI (JP)
KOBAYASHI HIROATSU (JP)
MAGARA TAKUJI (JP)
International Classes:
B23H1/02; B23H7/04; (IPC1-7): B23H7/04
Foreign References:
| JPH08300222A | 1996-11-19 | |||
| JPS51108397A | 1976-09-25 |
Attorney, Agent or Firm:
Miyata, Kaneo c/o Mitsubishi Denki Kabushiki Kaisha (2-3 Marunouchi 2-Chom, Chiyoda-ku Tokyo, JP)
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