US5200905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric discharge machining control apparatus
Assignee: Mitsubishi Electric Corp
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Filing: 1990-08-07
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Granted: 1993-04-06
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Expires: 2010-08-07
Abstract
Abstract An electric discharge machining control apparatus in which the know how of a skilled person can be readily written which concerns the setting of machining conditions such as pause time, discharge duration time, servo reference voltage, and speed gain which are necessary for maintaining optimum electric discharge machining conditions and for offering a maximum electric discharge machining efficiency, as well as the criterions to the instability of electric discharge machining conditions. According to the know how, the machining control is carried out in a most suitable manner, and can be automatically adjusted when required.
Inventors
- 👤 Kazuhiko Uemoto
- 👤 Koji Akamatsu
- 👤 Nobuaki Ohba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:26
CPC Classifications
B; B23; B23H; B23H7/00; B23H7/14; B23H7/20; Y; Y10; Y10S; Y10S706/00; Y10S706/90; Y10S706/902; Y10S706/903; Y10S706/904
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
132 words
An electric discharge machining control apparatus comprising: control means for controlling at least one machining condition in an electric discharge machining operation; knowledge memory means for storing methods effective in allowing said control means to control said machining condition; status detecting means for detecting machining status data from an electric discharge machining process status memory means for storing at least one of the present and past machining status data detected by said status detecting means; and inference means for combining a plurality of results which are obtained from machining status data read out of said status memory means and methods read out of said knowledge memory means in association with said machining status data thus read, to provide an instruction value for the control of said machining condition by said control means.
Claim 2
Dependent Claim
132 words
An electric discharge machining control apparatus comprising: control means for controlling at least one machining condition in an electric discharge machining operation; knowledge memory means for storing methods effective in allowing said control means to control said machining condition; status detecting means for detecting machining status data from an electric discharge machining process status memory means for storing at least one of the present and past machining status data detected by said status detecting means; and inference means for combining a plurality of results which are obtained from machining status data read out of said status memory means and methods read out of said knowledge memory means in association with said machining status data thus read, to provide an instruction value for the control of said machining condition by said control means.
Claim 3
Dependent Claim
37 words
An apparatus as claimed in claim 1 wherein said control means controls at least one of a pause time, an electric discharge duration, a servo reference voltage and a feed speed in an electric discharge machining operation.
Claim 4
Dependent Claim
79 words
An electric discharge machining control apparatus as claimed in claim 1, in which said knowledge memory means comprises a knowledge memory section in which methods effective in performing pause time control, electric discharge duration control, and servo reference voltage control are stored in a rule form consisting of a first part in which conditions to be determined are described and a second part in which contents to be performed when said conditions are satisfied or not satisfied are described.
Claim 5
Dependent Claim
79 words
An electric discharge machining control apparatus as claimed in claim 2, in which said knowledge memory means comprises a knowledge memory section in which methods effective in performing pause time control, electric discharge duration control, and servo reference voltage control are stored in a rule form consisting of a first part in which conditions to be determined are described and a second part in which contents to be performed when said conditions are satisfied or not satisfied are described.
Claim 6
Dependent Claim
62 words
An electric discharge machining control apparatus as claimed in claim 3, wherein said knowledge memory section expresses the first and second parts of part or all of said rule forms according to a fuzzy set, and stores said expressions and membership functions corresponding thereto with respect to the fuzzy set, and said inference means combines the plurality of results by fuzzy composition.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-05 | 1996-10-05 | 1997-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-05 | 2000-10-05 | 2001-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-05 | 2004-10-05 | 2005-04-06 | $7700.00 | Window Closed / Lapsed |