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US3720475A
Expired / Lapsed
US
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Automatic machine tool
Assignee: Individual
•
Filing: 1970-12-22
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Granted: 1973-03-13
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Expires: 1990-12-22
Abstract
Abstract An automatic machine tool includes a head having a rotatable spindle and a head-mounted motor for directly driving the spindle. The head is slidably mounted on a main housing by means of a pair of parallel dovetail engagements, the position of one dovetail track member being selectively adjustable transversely along the housing. A main cam inside the housing translates a cam follower secured directly to the head to slide the head in opposition to a bias force exerted against the head by a fluidoperated piston. De-Actuation of the piston permits translation of the head to an extreme position, providing front access to an opening in the housing which renders the cam accessible. Secondary cams are secured to the same shaft which drives the main cam and actuate control switches as the shaft rotates.
Inventors
- 👤 R Leacock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:25
CPC Classifications
B; B23; B23Q; B23Q39/00; B23Q39/04; B23Q39/042; B23Q5/00; B23Q5/22; B23Q5/34; B23Q5/341; Y; Y10; Y10T; Y10T408/00; Y10T408/36; Y10T408/38; Y10T408/3806; Y10T408/3809; Y10T408/52; Y10T408/54; Y10T408/545; Y10T408/65; Y10T408/675
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
269 words
An automatic machine tool assembly comprising: an indexing work table arranged to rotate in equal angular steps; a plurality of stationary work stations positioned along the periphery of said work table at locations spaced by said equal angular steps; a plurality of workpiece holding elements mounted on said work table at respective locations spaced at said equal angular steps; a plurality of machine tools, each located at a different work station such that said workpiece holding elements align with said machine tools at index positions of said work table; wherein at least two of said machine tools each include: a main housing including at least one wall having a slot defined therein which extends longitudinally towards said work table; a machine tool carriage; engagement means for mounting said machine tool carriage on said wall of said main housing to permit slidable motion of said machine tool carriage along said wall; means for biasing said machine tool carriage in a direction away from said work table and along said wall; a main eccentric cam mounted within said housing for rotatable motion about an axis perpendicular to said wall; a cam drive motor located within said housing for rotating said main cam about said axis; a cam follower secured directly to said machine tool carriage and extending through said slot to the interior of said housing into engagement with said main cam such that said main cam opposes motion of said cam follower away from said work table, said cam follower being responsive to rotation of said main cam for effecting slidable motion of said machine tool carriage along said wall.
Claim 2
Dependent Claim
269 words
An automatic machine tool assembly comprising: an indexing work table arranged to rotate in equal angular steps; a plurality of stationary work stations positioned along the periphery of said work table at locations spaced by said equal angular steps; a plurality of workpiece holding elements mounted on said work table at respective locations spaced at said equal angular steps; a plurality of machine tools, each located at a different work station such that said workpiece holding elements align with said machine tools at index positions of said work table; wherein at least two of said machine tools each include: a main housing including at least one wall having a slot defined therein which extends longitudinally towards said work table; a machine tool carriage; engagement means for mounting said machine tool carriage on said wall of said main housing to permit slidable motion of said machine tool carriage along said wall; means for biasing said machine tool carriage in a direction away from said work table and along said wall; a main eccentric cam mounted within said housing for rotatable motion about an axis perpendicular to said wall; a cam drive motor located within said housing for rotating said main cam about said axis; a cam follower secured directly to said machine tool carriage and extending through said slot to the interior of said housing into engagement with said main cam such that said main cam opposes motion of said cam follower away from said work table, said cam follower being responsive to rotation of said main cam for effecting slidable motion of said machine tool carriage along said wall.
Claim 3
Dependent Claim
269 words
An automatic machine tool assembly comprising: an indexing work table arranged to rotate in equal angular steps; a plurality of stationary work stations positioned along the periphery of said work table at locations spaced by said equal angular steps; a plurality of workpiece holding elements mounted on said work table at respective locations spaced at said equal angular steps; a plurality of machine tools, each located at a different work station such that said workpiece holding elements align with said machine tools at index positions of said work table; wherein at least two of said machine tools each include: a main housing including at least one wall having a slot defined therein which extends longitudinally towards said work table; a machine tool carriage; engagement means for mounting said machine tool carriage on said wall of said main housing to permit slidable motion of said machine tool carriage along said wall; means for biasing said machine tool carriage in a direction away from said work table and along said wall; a main eccentric cam mounted within said housing for rotatable motion about an axis perpendicular to said wall; a cam drive motor located within said housing for rotating said main cam about said axis; a cam follower secured directly to said machine tool carriage and extending through said slot to the interior of said housing into engagement with said main cam such that said main cam opposes motion of said cam follower away from said work table, said cam follower being responsive to rotation of said main cam for effecting slidable motion of said machine tool carriage along said wall.
Claim 4
Dependent Claim
269 words
An automatic machine tool assembly comprising: an indexing work table arranged to rotate in equal angular steps; a plurality of stationary work stations positioned along the periphery of said work table at locations spaced by said equal angular steps; a plurality of workpiece holding elements mounted on said work table at respective locations spaced at said equal angular steps; a plurality of machine tools, each located at a different work station such that said workpiece holding elements align with said machine tools at index positions of said work table; wherein at least two of said machine tools each include: a main housing including at least one wall having a slot defined therein which extends longitudinally towards said work table; a machine tool carriage; engagement means for mounting said machine tool carriage on said wall of said main housing to permit slidable motion of said machine tool carriage along said wall; means for biasing said machine tool carriage in a direction away from said work table and along said wall; a main eccentric cam mounted within said housing for rotatable motion about an axis perpendicular to said wall; a cam drive motor located within said housing for rotating said main cam about said axis; a cam follower secured directly to said machine tool carriage and extending through said slot to the interior of said housing into engagement with said main cam such that said main cam opposes motion of said cam follower away from said work table, said cam follower being responsive to rotation of said main cam for effecting slidable motion of said machine tool carriage along said wall.
Claim 5
Dependent Claim
39 words
The automatic machine tool assembly according to claim 1 wherein said machine tools each further include: a spindle rotatably mounted on said machine tool carriage; and a motor mounted on said machine tool carriage for rotatably driving said spindle.
Claim 6
Dependent Claim
77 words
The automatic machine tool assembly according to claim 2 wherein said machine tools each further comprise: a shaft extending above said axis and rotatable by said cam Drive motor to in turn drive said main cam; a plurality of secondary cams secured to said shaft; a plurality of switches arranged adjacent said shaft for cyclic actuation by respective secondary cams during rotation of said shaft, said switches being arranged to control operational sequences in said machine tool.
Claim 7
Dependent Claim
84 words
The automatic machine tool assembly according to claim 1 wherein said engagement means is a dovetail engagement comprising: a pair of male members projecting from said machine tool carriage and extending parallel to one another and to said wall; and a pair of female members extending along said wall and configured to receive said male members in slidable engagement; wherein at least one of said female members is selectively translatable along said wall in a direction transverse to the slidable direction of said carriage.
Claim 8
Dependent Claim
34 words
The automatic machine tool assembly according to claim 1 wherein said means for biasing comprises a fluid pressure operated drive member selectively actuable to bias said machine tool carriage away from said work table.
References Cited (Backward Citations)
US1628234A
Cited
US1093265A
Cited
US1694814A
Cited
US1907550A
Cited
US2318619A
Cited
US2358389A
Cited
US2340450A
Cited
US2472744A
Cited
US2506958A
Cited
US2872853A
Cited
US3398608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |