US5108561A
Expired / Lapsed
US
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Method of dressing, dressing system and dressing electrode for conductive grindstone
Assignee: Applied Magnetic Lab Co Ltd
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Filing: 1990-12-10
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Granted: 1992-04-28
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Expires: 2010-12-10
Abstract
Abstract A method of dressing for a conductive grindstone, a dressing system for this method and a dressing electrode used in this method. According to the preferred embodiment, this method comprises reciprocating a dressing electrode, which is formed of a metal having large chemical affinity with the super abrasive grains of the grindstone, in a direction being vertical to the moving direction of the grindstone, while the electrode is brought into contact with the ground surface of the grindstone with a predetermined pressure and applying a voltage between the electrode and the grindstone so as to provide a positive pole on the grindstone, while a conductive processing fluid is flown on the portion of the electrode contacting with the grindstone. Therefore, electrochemical action, chemical action, mechanical operation and electro-discharge operation are cooperated in a dressing process.
Inventors
- 👤 Akio Kuromatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:30
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/04; B24B53/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
136 words
A method of dressing a conductive grindstone having super abrasive grains, said method comprising: reciprocating a dressing electrode while said dressing electrode contacts a surface of said conductive grindstone with a predetermined pressure, wherein said dressing electrode is formed of a metal having a large chemical affinity with said super abrasive grains, an alloy containing said metal or a complex material containing said metal and a non-metal material, said metal being selected from the group consisting of Ti, Zr, Hf, V, Nb and Ta; applying a voltage between said dressing electrode and said conductive grindstone so as to provide a pole on said conductive grindstone, said pole being on average positive during the dressing process; and applying a conductive processing fluid to the portion of said dressing electrode contacting said conductive grindstone during the dressing process.
Claim 2
Independent Claim
136 words
A method of dressing a conductive grindstone having super abrasive grains, said method comprising: reciprocating a dressing electrode while said dressing electrode contacts a surface of said conductive grindstone with a predetermined pressure, wherein said dressing electrode is formed of a metal having a large chemical affinity with said super abrasive grains, an alloy containing said metal or a complex material containing said metal and a non-metal material, said metal being selected from the group consisting of Ti, Zr, Hf, V, Nb and Ta; applying a voltage between said dressing electrode and said conductive grindstone so as to provide a pole on said conductive grindstone, said pole being on average positive during the dressing process; and applying a conductive processing fluid to the portion of said dressing electrode contacting said conductive grindstone during the dressing process.
Claim 3
Dependent Claim
29 words
A method of dressing a conductive grindstone according to claim 1, wherein said dressing electrode is reciprocated in a direction perpendicular to the moving direction of said conductive grindstone.
Claim 4
Dependent Claim
135 words
A dressing system for a conductive grindstone having super abrasive grains, said system comprising: a dressing electrode formed of a metal having a large chemical affinity with said super abrasive grains, an alloy containing said metal or a complex material containing said metal and a non-metal material, said metal being selected from the group consisting of Ti, Zr, Hf, V, Nb and Ta; a mechanism which holds said dressing electrode and presses said dressing electrode to a peripheral surface of said of said conductive grindstone with a predetermined pressure and which reciprocates said dressing electrodes; and a dressing power source, from which a voltage is applied between said dressing electrode and said conductive grindstone so as to provide a positive pole on said conductive grindstone, said pole being on average positive during the dressing process.
Claim 5
Dependent Claim
135 words
A dressing system for a conductive grindstone having super abrasive grains, said system comprising: a dressing electrode formed of a metal having a large chemical affinity with said super abrasive grains, an alloy containing said metal or a complex material containing said metal and a non-metal material, said metal being selected from the group consisting of Ti, Zr, Hf, V, Nb and Ta; a mechanism which holds said dressing electrode and presses said dressing electrode to a peripheral surface of said of said conductive grindstone with a predetermined pressure and which reciprocates said dressing electrodes; and a dressing power source, from which a voltage is applied between said dressing electrode and said conductive grindstone so as to provide a positive pole on said conductive grindstone, said pole being on average positive during the dressing process.
Claim 6
Dependent Claim
32 words
A dressing system for a conductive grindstone according to claim 3, wherein said dressing electrode is reciprocated in a direction perpendicular to the moving direction of said conductive grindstone by said mechanism.
Claim 7
Dependent Claim
77 words
A dressing electrode for a conductive grindstone having super abrasive grains, said electrode comprising: a portion which contacts said conductive grindstone during a dressing process, wherein at least said portion is formed of a metal having a large chemical affinity with said super abrasive grains, an alloy containing said metal or a complex material containing said metal and a non-metal material, said metal being selected from the group consisting of Ti, Zr, Hf, V, Nb and Ta.
Claim 8
Dependent Claim
77 words
A dressing electrode for a conductive grindstone having super abrasive grains, said electrode comprising: a portion which contacts said conductive grindstone during a dressing process, wherein at least said portion is formed of a metal having a large chemical affinity with said super abrasive grains, an alloy containing said metal or a complex material containing said metal and a non-metal material, said metal being selected from the group consisting of Ti, Zr, Hf, V, Nb and Ta.
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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) | 1995-04-28 | 1995-10-28 | 1996-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-28 | 1999-10-28 | 2000-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-28 | 2003-10-28 | 2004-04-28 | $7700.00 | Window Closed / Lapsed |