US3680439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool having rotary and indexible work table
Assignee: Caludon Engineering Co Ltd
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Filing: 1970-06-01
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Granted: 1972-08-01
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Expires: 1990-06-01
Abstract
Abstract A machine took, 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
- 👤 James Kenneth Lancaster
- 👤 David William Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:56
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: 19
Claim 1
Independent Claim
95 words
A machine tool comprising a rotatable worktable for supporting a workpiece, a cutter head on which a rotatable cutting tool for acting on the workpiece is arranged to be carried, a support frame for the cutter head, drive means for rotating the cutting tool, drive means for moving the cutter head relative to the associated cutter head support frame, and selective drive means for driving the worktable in a series of accurately predetermined incremental movements or for continuously rotating the worktable, and for providing said incremental movements of the worktable to be variable in magnitude.
Claim 2
Dependent Claim
95 words
A machine tool comprising a rotatable worktable for supporting a workpiece, a cutter head on which a rotatable cutting tool for acting on the workpiece is arranged to be carried, a support frame for the cutter head, drive means for rotating the cutting tool, drive means for moving the cutter head relative to the associated cutter head support frame, and selective drive means for driving the worktable in a series of accurately predetermined incremental movements or for continuously rotating the worktable, and for providing said incremental movements of the worktable to be variable in magnitude.
Claim 3
Dependent Claim
34 words
A machine tool according to claim 1 wherein the drive means for the cutter head is arranged to move the cutter head radially of or parallel to the axis of rotation of the worktable.
Claim 4
Dependent Claim
62 words
A machine tool according to claim 2 wherein two cutter heads are provided each having drive means for moving the cutter heads relative to their associated support frame, one cutter head being movable radially of the worktable and the other being movable parallel to the axis of rotation of the worktable, the two cutter heads being mounted on a common support frame.
Claim 5
Dependent Claim
27 words
A machine tool according to claim 1 comprising two or more cutting heads mounted on a common support frame for movement with respect to the support frame.
Claim 6
Dependent Claim
53 words
A machine tool according to claim 4 wherein each of the cutter heads has a guide co-operating with a guideway on the support frame, and the drive means, which is arranged to move each guide along the associated guideway, includes a rotatable screw-threaded shaft which is in screw-threaded engagement with the cutter head.
Claim 7
Dependent Claim
68 words
A machine tool according to claim 1 wherein the drive means for moving said 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 cutting head to its initial position with respect to the support frame.
Claim 8
Dependent Claim
68 words
A machine tool according to claim 1 wherein the support frame includes a cutter body upon which the cutter head is supported, the cutter head being movable by said drive means relative to the cutter body and the cutter body being movable relative to the support frame in a direction at a right angle with respect to said movement of the cutter head relative to the cutter body.
Claim 9
Dependent Claim
41 words
A machine tool according to claim 7 wherein the drive means for moving said cutter head relative to the cutter body is carried on the cutter body and includes change speed means for varying the rotational speed of the cutting tool.
Claim 10
Dependent Claim
21 words
A machine tool according to claim 1 wherein the drive means for the cutting tool is carried on the cutter head.
Claim 11
Dependent Claim
53 words
A machine tool according to claim 1 wherein the the drive means for the worktable includes 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.
Claim 12
Dependent Claim
34 words
A machine tool according to claim 10 wherein the worktable drive means includes clutch means whereby the worktable is drivable in increments through the geneva mechanism or is drivable continuously by-passing the geneva mechanism.
Claim 13
Dependent Claim
33 words
A machine tool according to claim 12 wherein the drive to the worktable from the drive motor is disconnectable and the worktable is rotatable manually independently of the drive motor and geneva mechanism.
Claim 14
Dependent Claim
60 words
A machine tool according to claim 12, wherein the worm wheel of the worktable drive means is coaxial with and secured to the worktable and the worm which engages the worm wheel includes means for taking up play between the worm wheel and the worktable drive means is arranGed so that the worktable can only be rotated in one direction.
Claim 15
Dependent Claim
32 words
A machine tool according to Claim 12 wherein the drive means for the worktable includes adjustable gearing whereby the increments of movement of the worktable determined by the geneva mechanism are varied.
Claim 16
Dependent Claim
43 words
A machine tool according to claim 1 wherein the cutter head includes a rotatable spindle on which a cutting wheel is arranged to be drivably supported, the spindle being removable whereby different sizes of cutting wheel can be fitted to the cutter head.
Claim 17
Dependent Claim
30 words
A machine tool according to claim 15 wherein the spindle is axially movable whereby the cutting wheel can be centered after fitting different sizes of cutting wheel to the spindle.
Claim 18
Dependent Claim
108 words
A machine tool comprising a worktable for supporting a workpiece, two cutting heads on each of which a rotatable cutting tool for acting on the workpiece is arranged to be carried, a support frame common to both cutter heads on which the cutter heads are supported, drive means carried on each cutter head for rotating the associated cutting tool, and drive means for moving the cutter heads relative to the support frame, and selective drive means for driving the worktable in a series of accurately predetermined incremental movements or for continuously rotating the worktable, and for providing said incremental movements of the worktable to be variable in magnitude.
Claim 19
Dependent Claim
108 words
A machine tool comprising a worktable for supporting a workpiece, two cutting heads on each of which a rotatable cutting tool for acting on the workpiece is arranged to be carried, a support frame common to both cutter heads on which the cutter heads are supported, drive means carried on each cutter head for rotating the associated cutting tool, and drive means for moving the cutter heads relative to the support frame, and selective drive means for driving the worktable in a series of accurately predetermined incremental movements or for continuously rotating the worktable, and for providing said incremental movements of the worktable to be variable in magnitude.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |