Patent US3771391A successfully refreshed from Google Patents.
US3771391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure for and method of machining an irregular cylindrical surface
Assignee: NORTH TOOL AND Mfg CO
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Filing: 1971-03-22
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Granted: 1973-11-13
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Expires: 1991-03-22
Abstract
Abstract Structure for and a method of machining an irregular cylindrical surface. The structure includes chuck means for holding a workpiece for rotation about the axis of generation of an irregular cylindrical surface to be machined thereon, slide means for holding at least one tool in engagement with the workpiece surface to be machined and for movement of the engaged tool axially of the axis of generation of the surface to be machined, a rotatably mounted cam ring and a cam follower secured to the slide means and engaged with the cam ring and carrying the tool for moving the tool radially of the workpiece along with the axial movement thereof to define the surface to be machined, and means for synchronizing rotation of the cam ring and workpiece to duplicate the cam surface of the cam ring in the workpiece with a selected orientation in the workpiece.
Inventors
- 👤 R Jacks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:31
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/102; B23Q35/103; B23B; B23B41/00; B23B41/04; Y; Y10; Y10T; Y10T82/00; Y10T82/13; Y10T82/135; Y10T82/25
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
166 words
Structure for machining an irregular cylindrical surface on a workpiece comprising means for holding the workpiece, means for holding a machining tool in engagement with the surface of the workpiece to be machined, and means connected to at least one of the means for holding the workpiece and the means for holding the tool for rotating the workpiece and tool relative to each other about the axis of generation of the cylindrical surface, and means for moving at least one of the workpiece and tool radially with respect to the other during the relative rotation of the workpiece and tool comprising a rotatable cam ring having an irregular cylindrical recess therein, a slide, a cam follower secured to the slide and in engagement with the cam ring within the irregular cylindrical recess therein for movement thereby radially of the axis of generation on rotation of the cam ring, and means for connecting the one of the workpiece and tool to the slide for radial movement therewith.
Claim 2
Dependent Claim
166 words
Structure for machining an irregular cylindrical surface on a workpiece comprising means for holding the workpiece, means for holding a machining tool in engagement with the surface of the workpiece to be machined, and means connected to at least one of the means for holding the workpiece and the means for holding the tool for rotating the workpiece and tool relative to each other about the axis of generation of the cylindrical surface, and means for moving at least one of the workpiece and tool radially with respect to the other during the relative rotation of the workpiece and tool comprising a rotatable cam ring having an irregular cylindrical recess therein, a slide, a cam follower secured to the slide and in engagement with the cam ring within the irregular cylindrical recess therein for movement thereby radially of the axis of generation on rotation of the cam ring, and means for connecting the one of the workpiece and tool to the slide for radial movement therewith.
Claim 3
Dependent Claim
38 words
Structure as set forth in claim 1 and further including means operably associated with the one of the means for holding the workpiece and the means for holding the tool and the cam ring for synchronizing rotation thereof.
Claim 4
Dependent Claim
80 words
Structure as set forth in claim 2 wherein the means for synchronizing the rotation comprises a drive finger secured to the one of the means for holding the workpiece and the means for holding the tool, and a locking recess on the other of the means for holding the workpiece and the means for holding the tool, said locking recess receiving the drive finger on movement of the workpiece into alignment with the tool due to the relative rotation threof.
Claim 5
Dependent Claim
163 words
Structure for machining an irregular cylindrical surface on a workpiece comprisiNg means for supporting and rotating the workpiece, a slide positioned above the workpiece for radial reciprocation with respect to the axis of rotation of the workpiece, means supporting the slide and moving the slide axially with respect to the axis of rotation of the workpiece toward and away from the workpiece, a rotatable cam ring having an irregular cylindrical recess therein, means supporting the cam ring for rotation on the means supporting the slide, means for rotating the cam ring and cam follower structure secured to the slide and positioned within the irregular cylindrical recess therein for movement radially of the axis of generation of the workpiece on rotation of the cam ring to produce radial movement of a tool secured to the slide in engagement with the workpiece, and means operable between the means supporting the workpiece and the means supporting the cam ring for synchronizing the rotation thereof and workpiece.
Claim 6
Dependent Claim
163 words
Structure for machining an irregular cylindrical surface on a workpiece comprisiNg means for supporting and rotating the workpiece, a slide positioned above the workpiece for radial reciprocation with respect to the axis of rotation of the workpiece, means supporting the slide and moving the slide axially with respect to the axis of rotation of the workpiece toward and away from the workpiece, a rotatable cam ring having an irregular cylindrical recess therein, means supporting the cam ring for rotation on the means supporting the slide, means for rotating the cam ring and cam follower structure secured to the slide and positioned within the irregular cylindrical recess therein for movement radially of the axis of generation of the workpiece on rotation of the cam ring to produce radial movement of a tool secured to the slide in engagement with the workpiece, and means operable between the means supporting the workpiece and the means supporting the cam ring for synchronizing the rotation thereof and workpiece.
Claim 7
Dependent Claim
74 words
Structure as set forth in claim 4, wherein the means for synchronizing the rotation of the means supporting the workpiece and the means supporting the cam ring comprises a drive finger secured to the means supporting the cam ring and a locking recess on the means supporting the workpiece, said locking recess receiving the drive finger on movement of the workpiece into a synchronized position with the cam ring due to relative rotation thereof.
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) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |