Patent US4229909A successfully refreshed from Google Patents.
US4229909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool grinding machine
Assignee: United States Department of Energy
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Filing: 1979-03-22
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Granted: 1980-10-28
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Expires: 1999-03-22
Abstract
Abstract The present invention relates to an improved tool grinding mechanism for grinding single point diamond cutting tools to precise roundness and radius specifications. The present invention utilizes a tool holder which is longitudinally displaced with respect to the remainder of the grinding system due to contact of the tool with the grinding surface with this displacement being monitored so that any variation in the grinding of the cutting surface such as caused by crystal orientation or tool thickness may be compensated for during the grinding operation to assure the attainment of the desired cutting tool face specifications.
Inventors
- 👤 Charles E. Dial, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:15
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
181 words
A tool grinding machine comprising a rotatable grinding wheel, tool holding means for holding a tool to be ground to desired tolerances, bearing means for supporting the tool holding means in a relatively movable manner therewith along a path in a single plane, pivotal means coupled to said bearing means for rotating the tool holding means over a preselected arc on an axis perpendicular to said plane and parallel to the face of the grinding wheel, moving means disposed intermediate said pivotal means and said bearing means for effecting relative displacement of said bearing means and the tool holding means supported thereby along said plane, sensing means coupled to said tool holding means for sensing said relative movement of said tool holding means within said bearing means when the tool is placed in contact with said grinding wheel by said moving means and when the tool holding means is displaced about said arc while in said contact with the grinding wheel, and spring means engaging said tool holding means for continually urging the latter along said path towards said grinding wheel.
Claim 2
Dependent Claim
181 words
A tool grinding machine comprising a rotatable grinding wheel, tool holding means for holding a tool to be ground to desired tolerances, bearing means for supporting the tool holding means in a relatively movable manner therewith along a path in a single plane, pivotal means coupled to said bearing means for rotating the tool holding means over a preselected arc on an axis perpendicular to said plane and parallel to the face of the grinding wheel, moving means disposed intermediate said pivotal means and said bearing means for effecting relative displacement of said bearing means and the tool holding means supported thereby along said plane, sensing means coupled to said tool holding means for sensing said relative movement of said tool holding means within said bearing means when the tool is placed in contact with said grinding wheel by said moving means and when the tool holding means is displaced about said arc while in said contact with the grinding wheel, and spring means engaging said tool holding means for continually urging the latter along said path towards said grinding wheel.
Claim 3
Dependent Claim
86 words
A tool grinding machine as claimed in claim 1, wherein said bearing means comprises a housing which has a throughgoing passageway and is supported by said moving means, said tool holding means comprises a cylindrical body disposed in said passageway with a portion of said body adjacent each end thereof projecting from said housing, a bearing is disposed between said body and said housing, said tool is supported at one end of said body, and wherein the spring means engage the other end of said body.
Claim 4
Dependent Claim
49 words
A tool grinding machine as claimed in claim 2, wherein bracket means are carried by said housing and overlap said other end of said body, wherein said spring means comprises a compression spring disposed between and in contact with said other end of said body and said bracket means.
Claim 5
Dependent Claim
49 words
A tool grinding machine as claimed in claim 3, wherein a flange is attached to said other end of said body, said spring contacts one side of said flange, and wherein adjustable stop means are disposed intermediate said housing and the side of the flange opposite said one side.
Claim 6
Dependent Claim
58 words
A tool grinding machine as claimed in claim 3, wherein said sensing means comprises a linear variable differential transducer carried by said bracket means and engages said other end of said body, and wherein meter means are coupled to said transducer for receiving a signal from the latter indicative of the movement of said body in said housing.
References Cited (Backward Citations)
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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) | 1983-10-28 | 1984-04-28 | 1984-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-28 | 1988-04-28 | 1988-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-28 | 1992-04-28 | 1992-10-28 | $7700.00 | Window Closed / Lapsed |