Patent US3673656A successfully refreshed from Google Patents.
US3673656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plunge facing tool
Assignee: Cross Co
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Filing: 1970-10-12
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Granted: 1972-07-04
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Expires: 1990-10-12
Abstract
Abstract The tool has a cutter holding head which may be rotatively engaged with or by a coaxial workpiece, the head removably and replaceably mounting on an axial face thereof a multiplicity of known type circular cutting inserts. These cutters are circumferentially spaced from one another about the axis of the tool, and they are also spaced or staggered slightly relative to one another in the radial sense, so that upon relative rotation of the tool and work in removing material from the latter, the cutters sweep shallow circular groove paths which radially overlap one another.
Inventors
- 👤 Wilbur R Gerchow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:45
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C3/00; B23C3/007; Y; Y10; Y10S; Y10S408/00; Y10S408/713; Y10T; Y10T408/00; Y10T408/89; Y10T408/893; Y10T408/899; Y10T408/905; Y10T408/906
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
275 words
A plunge-acting tool adapted to face machine a given surface area and also to machine adjacent annular edge portions of a workpiece under relative rotation about a fixed common axis and axial thrust engagement of the tool and workpiece, one of which rotates and the other of which is rotatively fixed, comprising a holder having a set of substantially identical cutters projecting equidistantly therefrom in the direction of said fixed common axis of relative rotation for machining engagement with the workpiece, which cutters alone and of themselves face machine the entirety of said given area in a continuing phase of said relative rotation and thrust engagement, said cutters being spaced from one another at minor angular increments in the general direction of said relative rotation and in a 360* annular zone about said axis, and also being arranged in a succession in a direction at a substantial angle to that direction, said arrangement being such that at least some of the cuts made by the cutters in the workpiece overlap one another, at least one chamfering blade fixedly mounted on said holder in radially spaced relation to said face machining cutter set and in position to chamfer an edge of the workpiece radially adjacent said given area of the latter, and at least one turning cutter fixedly mounted on said holder in radially spaced relation to said face machining cutters and chamfering blades and in position to turn an annular surface of the workpiece adjacent said given area and chamfered edge of the latter, said sets operating in timed relation to one another in said continuing phase and under the force of the thrust engagement.
Claim 2
Dependent Claim
275 words
A plunge-acting tool adapted to face machine a given surface area and also to machine adjacent annular edge portions of a workpiece under relative rotation about a fixed common axis and axial thrust engagement of the tool and workpiece, one of which rotates and the other of which is rotatively fixed, comprising a holder having a set of substantially identical cutters projecting equidistantly therefrom in the direction of said fixed common axis of relative rotation for machining engagement with the workpiece, which cutters alone and of themselves face machine the entirety of said given area in a continuing phase of said relative rotation and thrust engagement, said cutters being spaced from one another at minor angular increments in the general direction of said relative rotation and in a 360* annular zone about said axis, and also being arranged in a succession in a direction at a substantial angle to that direction, said arrangement being such that at least some of the cuts made by the cutters in the workpiece overlap one another, at least one chamfering blade fixedly mounted on said holder in radially spaced relation to said face machining cutter set and in position to chamfer an edge of the workpiece radially adjacent said given area of the latter, and at least one turning cutter fixedly mounted on said holder in radially spaced relation to said face machining cutters and chamfering blades and in position to turn an annular surface of the workpiece adjacent said given area and chamfered edge of the latter, said sets operating in timed relation to one another in said continuing phase and under the force of the thrust engagement.
Claim 3
Dependent Claim
281 words
A plunge-acting tool adapted to face machine a given surface area and also to machine adjacent annular edge portions of a workpiece under relative rotation about a fixed common axis and axial thrust engagement of the tool and workpiece, one of which rotates and the other of which is rotatively fixed, comprising a holder having a set of substantially identical cutters projecting equidistantly with one another from the holder in the direction of said fixed common axis of relative rotation for machining engagement with a face of the workpiece, which cutters alone and of themselves face machine the entirety of said given area in a continuing phase of said relative rotation and thrust engagement, said cutters being spaced from one another radially of said axis and also being spaced in a generally circumferential direction from one another at minor angular increments in a 360* angular zone about said axis, the extent of the radial spacing being such that at least some of the cuts made by the cutters in the workpiece radially overlap one another, a set of circumferentially spaced chamfering blades fixedly mounted on said holder in radially spaced relation to said face machining cutter set and in position to chamfer an edge of the workpiece radially adjacent said given area of the latter, and a set of turning cutters fixedly mounted on said holder in radially spaced relation to said face machining cutter and chamfering blade sets and in position to turn an annular surface of the workpiece adjacent said given area and chamfered edge of the latter, said sets operating in timed relation to one another in said continuing phase and under the force of the thrust engagement.
Claim 4
Dependent Claim
281 words
A plunge-acting tool adapted to face machine a given surface area and also to machine adjacent annular edge portions of a workpiece under relative rotation about a fixed common axis and axial thrust engagement of the tool and workpiece, one of which rotates and the other of which is rotatively fixed, comprising a holder having a set of substantially identical cutters projecting equidistantly with one another from the holder in the direction of said fixed common axis of relative rotation for machining engagement with a face of the workpiece, which cutters alone and of themselves face machine the entirety of said given area in a continuing phase of said relative rotation and thrust engagement, said cutters being spaced from one another radially of said axis and also being spaced in a generally circumferential direction from one another at minor angular increments in a 360* angular zone about said axis, the extent of the radial spacing being such that at least some of the cuts made by the cutters in the workpiece radially overlap one another, a set of circumferentially spaced chamfering blades fixedly mounted on said holder in radially spaced relation to said face machining cutter set and in position to chamfer an edge of the workpiece radially adjacent said given area of the latter, and a set of turning cutters fixedly mounted on said holder in radially spaced relation to said face machining cutter and chamfering blade sets and in position to turn an annular surface of the workpiece adjacent said given area and chamfered edge of the latter, said sets operating in timed relation to one another in said continuing phase and under the force of the thrust engagement.
Claim 5
Dependent Claim
40 words
The tool of claim 1, in which said cutters are of circular outline and are fixedly but removably mounted to said holder for adjustment about the respective axes thereof, said cutters making arcuately grooved, radially overlapping cuts in the workpiece.
Claim 6
Dependent Claim
40 words
The tool of claim 2, in which said cutters are of circular outline and are fixedly but removably mounted to said holder for adjustmenT about the respective axes thereof, said cutters making arcuately grooved, radially overlapping cuts in the workpiece.
Claim 7
Dependent Claim
20 words
The tool of claim 2, in which the circumferential spacing of the cutters is at equal angles about said axis.
Claim 8
Dependent Claim
20 words
The tool of claim 4, in which the circumferential spacing of the cutters is at equal angles about said axis.
Claim 9
Dependent Claim
20 words
The tool of claim 1, in which said spacing of said cutters from one another is at equal angular intervals.
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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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |