Electrolytically machining apparatus
Abstract
Abstract AN ELECTROMAGNETIC FLOW METER MEASURES A FLOW RATE OF A LIQUID ELECTROLYTE SUPPLIED TO A WORKING GAP BETWEEN A WORKPIECE AND A WORKING ELECTRODE. IN ORDER TO MAINTAIN THE GAP CONSTANT, A MACHINING VOLTAGE OR CURRENT IS CONTROLLED TO HAVE ITS REFERENCE MAGNITUDE SIMULTANEOUSLY THE CURRENT OR VOLTAGE IS CONTROLLED TO MAKE THE MEASURED FLOW RATE EQUAL TO ITS CONSTANT REFERENCE MAGNITUDE. WITH THE ELECTRODE ARRANGED TO MOVE TOWARD THE WORKPIECE AT A CONSTANT FEED RATE, THE FEED RATE IS DETERMINED SO AS TO MAKE THE MACHINING CURRENT DENSITY EQUAL TO ITS CONSTANT REFERENCE MAGNITUDE WHILE THE MACHINING VOLTAGE IS CONTROLLED TO MAKE THE MEASURED FLOW RATE EQUAL TO ITS CONSTANT REFERENCE MAGNITUDE. ALTERNATIVELY, THE MACHINING VOLTAGE IS CONTROLLED TO HAVE ITS CONSTANT REFERENCE MAGNITUDE WHILE THE FEED RATE IS CONTROLLED TO MAKE THE MEASURED FLOW RATE EQUAL TO ITS REFERENCE MAGNITUDE.
Inventors
- 👤 Kazushige Koike
- 👤 Akio Sarai
Bibliographic Details
Claims Analysis
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |