US3768364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool having two adjustable cutter heads
Assignee: Caludon Engineering Co Ltd
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Filing: 1971-11-24
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Granted: 1973-10-30
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Expires: 1991-11-24
Abstract
Abstract A machine tool, primarily for producing slots in a workpiece, has a rotatable work-table for supporting the workpiece, a cutter head on which a rotatable cutting tool is carried and a support frame for the cutter head. The cutter head is movable relative to the support frame and work-table drive means rotates the worktable in a series of accurately predetermined increments or continuously. The increments of movement of the work-table are variable in magnitude and the cutting tool makes a cut in the work-table between each incremental movement. Two cutter heads are normally provided both of which are carried on a common support frame.
Inventors
- 👤 J Lancaster
- 👤 D Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:29
CPC Classifications
B; B23; B23Q; B23Q39/00; B23Q39/02; B23Q39/021; B23Q39/025; B23Q39/027; B23C; B23C1/00; B23C1/02; B23C1/04; B23Q1/00; B23Q1/01; B23Q1/25; B23Q1/44; B23Q1/50; B23Q1/52; B23Q1/522; B23Q16/00; B23Q16/02; B23Q16/027; B23Q16/04; B23Q16/06; B23Q16/065; B23Q2701/00; B23Q2701/02; B23Q2701/025; Y; Y10; Y10T; Y10T408/00; Y10T408/91; Y10T409/00; Y10T409/30; Y10T409/304536; Y10T409/305152; Y10T409/306664; Y10T409/306776; Y10T409/307056; Y10T409/307168; Y10T409/30868; Y10T409/308792; Y10T74/00; Y10T74/14; Y10T74/1418; Y10T74/1424; Y10T74/1441
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
A machine tool comprising a rotatable work table for supporting a workpiece, two cutter heads on each of which a rotatable cutting tool for acting on the workpiece is arranged to be carried, a base frame on which the work table is supported, a support frame rigidly secured to and upstanding from the base frame and extending in a generally vertical direction above the level of the work table and the two cutter heads being mounted on the support frame, the support frame being supported by the base frame only its lower end, drive means carried on each cutter head for driving the associated cutting tool, and drive means for moving the cutter heads relative to the support frame, one of the cutter heads being arranged to move parallel to the axis of rotation of the work table and the other cutter head being arranged to move radially of the axis of rotation of the work table.
Claim 2
Dependent Claim
157 words
A machine tool comprising a rotatable work table for supporting a workpiece, two cutter heads on each of which a rotatable cutting tool for acting on the workpiece is arranged to be carried, a base frame on which the work table is supported, a support frame rigidly secured to and upstanding from the base frame and extending in a generally vertical direction above the level of the work table and the two cutter heads being mounted on the support frame, the support frame being supported by the base frame only its lower end, drive means carried on each cutter head for driving the associated cutting tool, and drive means for moving the cutter heads relative to the support frame, one of the cutter heads being arranged to move parallel to the axis of rotation of the work table and the other cutter head being arranged to move radially of the axis of rotation of the work table.
Claim 3
Dependent Claim
64 words
A machine tool according to claim 1 wherein the cutter heads are each carried on respective cutter bodies movably mounted on the common support frame, each cutter body being movable in a plane parallel to the plane of movement of the associated cutter head relative to the support frame but at a right angle to the direction of movement of the associated cutter head.
Claim 4
Dependent Claim
66 words
A machine tool according to claim 2 wherein each of the cutter heads has a guide co-operating with a guide way on the associated cutter body, and the drive means for moving the cutter heads relative to the support frame is arranged to move each guide along the associated guide way and includes a rotatable screw-threaded shaft which is in screw-threaded engagement with the cutter head.
Claim 5
Dependent Claim
68 words
A machine tool according to claim 1 wherein the drive means for moving each cutter head relative to the associated support frame is operable at at least two speeds, one speed being for movement of the cutter head during a cutting operation of the cutting tool and the other, relatively faster, speed being for returning the cutter head to its initial position with respect to the support frame.
Claim 6
Dependent Claim
46 words
A machine tool according to claim 3 wherein the drive means for moving the cutter heads are carried on the respective cutter bodies, and the drive means for rotating the cutting tools each include change speed means for varying the rotational speed of the cutting tool.
Claim 7
Dependent Claim
78 words
A machine tool according to claim 1 comprising drive means for the worktable including a drive motor, a geneva mechanism, and a worm and worm wheel, the geneva mechanism being selectively engageable with the drive motor and the worm and worm wheel to obtain variable increments of movement of the worktable, and the drive means also includes clutch means whereby the worktable is drivable in increments through the geneva mechanism or is drivable continuously, bypassing the geneva mechanism.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |