US3750245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turret lathe
Assignee: Pratt and Whitney Co Inc
•
Filing: 1971-09-21
•
Granted: 1973-08-07
•
Expires: 1991-09-21
Abstract
Abstract A lathe has a square turret with two tools orthogonally arranged on each turret face such that one tool is mounted in perpendicular relationship to the turret face, and the other tool is mounted in parallel relationship to the turret face. The turret is rotatable to four index positions and is movable along two axes. The tools, which are mounted perpendicular to the respective turret faces, are adapted to perform boring operations on a workpiece, and the tools, which are mounted in parallel relationship to the respective turret faces are adapted for turning and/or facing operations. When utilizing the four index positions of the turret, eight tool positions are possible.
Inventors
- 👤 E Kennedy
- 👤 R Latzko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:28
CPC Classifications
B; B23; B23B; B23B3/00; B23B3/16; B23B3/161; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5104; Y10T29/5109; Y10T29/5152; Y10T29/5154; Y10T82/00; Y10T82/25; Y10T82/2531; Y10T82/2541; Y10T82/2585; Y10T82/2587
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
202 words
In a two-axis N/C lathe, the combination comprising: a generally square-shaped turret, having a plurality of faces with corners defined therebetween, mounted on the lathe for movement in a first direction and a second direction transverse to the first direction, and rotation such that the turret may be rotated to a plurality of index positions; a chuck mounted for rotation on the lathe for receiving a workpiece; means to secure an ID tool on each face in perpendicular relationship thereto for internal machining of the workpiece; means to secure an OD tool, having a shank and a tip, on each corner in parallel relationship with one of the adjacent faces such that the shank is located between the tip and the adjacent ID tool to which the shank is transverse so as to avoid interference with the workpiece during internal machining, and such that the tip is spaced from the adjacent ID tool a distance which is greater than the chuck radius so as to avoid interference between the chuck and the adjacent ID tool during external machining; and whereby the turret is positionable to provide two distinct and separate tool positions for each turret index for independent operation of each tool.
Claim 2
Dependent Claim
202 words
In a two-axis N/C lathe, the combination comprising: a generally square-shaped turret, having a plurality of faces with corners defined therebetween, mounted on the lathe for movement in a first direction and a second direction transverse to the first direction, and rotation such that the turret may be rotated to a plurality of index positions; a chuck mounted for rotation on the lathe for receiving a workpiece; means to secure an ID tool on each face in perpendicular relationship thereto for internal machining of the workpiece; means to secure an OD tool, having a shank and a tip, on each corner in parallel relationship with one of the adjacent faces such that the shank is located between the tip and the adjacent ID tool to which the shank is transverse so as to avoid interference with the workpiece during internal machining, and such that the tip is spaced from the adjacent ID tool a distance which is greater than the chuck radius so as to avoid interference between the chuck and the adjacent ID tool during external machining; and whereby the turret is positionable to provide two distinct and separate tool positions for each turret index for independent operation of each tool.
Claim 3
Dependent Claim
246 words
In a two-axis N/C lathe having a bed, the combination comprising: a chuck mounted for rotation upon the lathe for receiving a workpiece; a first track positioned on the bed and having an axis parallel to the axis of the chuck; a carriage mounted on the first track for axial movement toward and away from the chuck; a second track positioned on the carriage and having an axis transverse to the axis of the first track; a cross slide mounted on the second track for axial movement therealong; a generally square-shaped, indexing turret, having four faces which define four corners, mounted on the cross slide for rotation relative thereto between four index positions; means on each face for mounting an ID tool perpendicular thereto for internal machining of the workpieces; means on each corner for mounting an OD tool, having a shank and a tip, in parallel relationship with one of the adjacent faces such that the shank is located between the tip and the adjacent ID tool to which the shank is transverse so as to avoid interference with the workpiece during internal machining and such that the tip is spaced from the adjacent ID tool a distance which is greater than the chuck radius so as to avoid interference between the chuck and the adjacent ID tool during external machining; and whereby the turret is positionable to provide two distinct and separate tool positions for each turret index for independent operation of each tool.
Claim 4
Dependent Claim
246 words
In a two-axis N/C lathe having a bed, the combination comprising: a chuck mounted for rotation upon the lathe for receiving a workpiece; a first track positioned on the bed and having an axis parallel to the axis of the chuck; a carriage mounted on the first track for axial movement toward and away from the chuck; a second track positioned on the carriage and having an axis transverse to the axis of the first track; a cross slide mounted on the second track for axial movement therealong; a generally square-shaped, indexing turret, having four faces which define four corners, mounted on the cross slide for rotation relative thereto between four index positions; means on each face for mounting an ID tool perpendicular thereto for internal machining of the workpieces; means on each corner for mounting an OD tool, having a shank and a tip, in parallel relationship with one of the adjacent faces such that the shank is located between the tip and the adjacent ID tool to which the shank is transverse so as to avoid interference with the workpiece during internal machining and such that the tip is spaced from the adjacent ID tool a distance which is greater than the chuck radius so as to avoid interference between the chuck and the adjacent ID tool during external machining; and whereby the turret is positionable to provide two distinct and separate tool positions for each turret index for independent operation of each tool.
Claim 5
Dependent Claim
27 words
The combination of claim 2, further including: means to drive the carriage along the first track; And means to drive the cross slide along the second track.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |