US4956056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of abrasive electroerosion grinding
Assignee: EXPERIMENTALNY NAUCHNO-ISSLEDOVATELSKY INSTITUT METALLOREZHUSCHIKH STANKOV USSR MOSCOW
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Filing: 1989-03-20
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Granted: 1990-09-11
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Expires: 2009-03-20
Abstract
Abstract A method of grinding includes the application to an abrasive wheel in a grinding zone of a pulse voltage, arranged out of the grinding zone is an electrode to which is applied a rectified voltage having an amplitude and a ripple factor ensuring formation of an oxide film on a surface of the wheel, and use is made of a coolant having a conductivity from 2·10 -3 to 2·10 -2 ohm -1 cm -1 .
Inventors
- 👤 Lidia S. Zubatova
- 👤 Eduard Y. Grodzinsky
- 👤 Ivan V. Shelyagin
- 👤 Alexandr A. Zaitsev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:58
CPC Classifications
B; B23; B23H; B23H5/00; B23H5/04; Y; Y10; Y10S; Y10S204/00; Y10S204/09
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
A method of abrasive electroerosion grinding with the aid of a metallic-bond abrasive wheel and a coolant having a conductivity of from 2·10 -3 to 2·10 -2 ohm -1 cm -1 , comprising the steps of: applying a pulse voltage to said wheel in a zone of grinding; arranging an electrode adapted to produce an additional electric effect on said wheel out of said zone of grinding of said workpiece; creating an interelectrode space betwen the electrode and wheel for a coolant to be supplied thereinto; applying a rectified voltage having an amplitude and a ripple factor to said electrode and wheel, which ensures formation of an insulating oxide film on the surface of said wheel.
Claim 2
Independent Claim
116 words
A method of abrasive electroerosion grinding with the aid of a metallic-bond abrasive wheel and a coolant having a conductivity of from 2·10 -3 to 2·10 -2 ohm -1 cm -1 , comprising the steps of: applying a pulse voltage to said wheel in a zone of grinding; arranging an electrode adapted to produce an additional electric effect on said wheel out of said zone of grinding of said workpiece; creating an interelectrode space betwen the electrode and wheel for a coolant to be supplied thereinto; applying a rectified voltage having an amplitude and a ripple factor to said electrode and wheel, which ensures formation of an insulating oxide film on the surface of said wheel.
Claim 3
Dependent Claim
22 words
A method as claimed in claim 1 in which the rectified voltage supplied has an amplitude of from 5 to 35 V.
Claim 4
Dependent Claim
22 words
A method as claimed in claim 1 in which the rectified voltage supplied has a ripple factor of from 10 to 15%.
Claim 5
Dependent Claim
43 words
A method as claimed in claim 1 in which the rectified voltage supplied has an amplitude of about 32 V and a ripple factor of about 12%, and the coolant used has a conductivity of about 5·10 -3 ohm -1 cm -1 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |