Patent US3590673A successfully refreshed from Google Patents.
US3590673A
Expired / Lapsed
US
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Automatic turret lathe
Assignee: Index Werke GmbH and Co KG Hahn and Tessky
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Filing: 1969-08-25
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Granted: 1971-07-06
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Expires: 1989-08-25
Abstract
Abstract An automatic turret lathe wherein the carriage is reciprocable from a retracted position to several forward positions and supports an indexible turret for a given number of tool holders. The carriage is reciprocated by a toothed rack which is movable between two end positions and transmits motion to the carriage during a portion of its forward movement by way of one of several adjustable threaded bolts which are indexible with reference to the carriage and one of which is in registry with a dead stop to arrest the the carriage in that forward position which is best suited for treatment of a workpiece by the tool in the corresponding tool holder. The turret is indexible in response to indexing of a support for the bolts. A locking device which prevents indexing of the turret in each forward position of the carriage is disengaged by the rack while the latter moves relative to the carriage.
Inventors
- 👤 Gerhard Foll
- 👤 Helmut Link
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:29
CPC Classifications
B; B23; B23Q; B23Q16/00; B23Q16/02; B23Q16/08; B23Q16/10; B23Q16/102; B23B; B23B3/00; B23B3/16; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5152; Y10T29/5154; Y10T29/5163; Y10T74/00; Y10T74/14; Y10T74/1476; Y10T82/00; Y10T82/14; Y10T82/25; Y10T82/2531; Y10T82/2533; Y10T82/2535; Y10T82/2572; Y10T82/2574; Y10T82/2581
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
167 words
In a machine tool, particularly in an automatic turret lathe, a combination comprising a frame; a carriage reciprocably mounted in said frame for movement between a retracted position and a plurality of forward positions; a feeding unit for reciprocating said carriage, including a driving member reciprocable between two end positions and a mechanisms for moving said driving member whereby the latter moves said carriage from retracted position to one of said forward positions during movement from one to the other end position thereof; stop means provided on said frame; indexible supporting means provided on said carriage, and a plurality of adjustable abutments provided on and each movable by said supporting means to an operative position of registry with said stop means and in the path of movement of said driving member from said one to said other end position whereby the driving member entrains the carriage from retracted position to that forward position in which the abutment which dwells in said operative position engages said stop means.
Claim 2
Dependent Claim
167 words
In a machine tool, particularly in an automatic turret lathe, a combination comprising a frame; a carriage reciprocably mounted in said frame for movement between a retracted position and a plurality of forward positions; a feeding unit for reciprocating said carriage, including a driving member reciprocable between two end positions and a mechanisms for moving said driving member whereby the latter moves said carriage from retracted position to one of said forward positions during movement from one to the other end position thereof; stop means provided on said frame; indexible supporting means provided on said carriage, and a plurality of adjustable abutments provided on and each movable by said supporting means to an operative position of registry with said stop means and in the path of movement of said driving member from said one to said other end position whereby the driving member entrains the carriage from retracted position to that forward position in which the abutment which dwells in said operative position engages said stop means.
Claim 3
Dependent Claim
60 words
A combination as defined in claim 1, wherein said driving member is reciprocable in parallelism with the direction of movement of said carriage and comprises pusher means operative to move said carriage from retracted position by way of that abutment which dwells in said operative position while said driving member moves from said one toward said other end position thereof.
Claim 4
Dependent Claim
30 words
A combination as defined in claim 2, wherein said driving Member is a toothed rack and said mechanism comprises an oscillatable lever having a toothed portion meshing with said rack.
Claim 5
Dependent Claim
78 words
A combination as defined in claim 1, further comprising a tool support mounted on said carrier and indexible to a plurality of positions, one for each of said abutments, and means for indexing said tool support. 5. A combination as defined in claim 4, further comprising locking means provided on said carriage and operative to hold said tool support against indexing movement with reference to said carriage, at least when the carriage assumes one of said forward positions.
Claim 6
Dependent Claim
23 words
A combination as defined in claim 4, wherein the means for indexing said tool support is responsive to indexing of said supporting means.
Claim 7
Dependent Claim
29 words
A combination as defined in claim 6, wherein the means for indexing said tool support comprises a shaft rotatably mounted in said carriage and rigid with said supporting means.
Claim 8
Dependent Claim
40 words
A combination as defined in claim 7, wherein said supporting means comprises gear teeth and further comprising means for indexing said supporting means including a gear meshing with said gear teeth, at least in the retracted position of said carriage.
Claim 9
Dependent Claim
32 words
A combination as defined in claim 5, further comprising disengaging means operative to disengage said locking means so as to permit indexing of said tool support in retracted position of said carriage.
Claim 10
Dependent Claim
18 words
A combination as defined in claim 9, wherein said disengaging means includes a portion of said driving member.
Claim 11
Dependent Claim
54 words
A combination as defined in claim 10, wherein said driving member is movable with reference to said carriage during travel toward said one end position thereof and wherein said portion of said driving member is operative to effect disengagement of said locking means during movement of said driving member with reference to said carriage.
Claim 12
Dependent Claim
68 words
A combination as defined in claim 5, wherein said tool support includes a turret having a shaft rotatably and axially movably mounted in said carriage, said locking means comprising a first gear secured to said carriage, a second gear secured to said tool support, and biasing means for urging the shaft of said turret to an axial position in which said second gear meshes with said first gear.
Claim 13
Dependent Claim
82 words
A combination as defined in claim 12, further comprising disengaging means for moving said second gear away from mesh with said first gear to thus permit indexing of said turret, said disengaging means comprising a lever pivotably mounted in said carriage and having an arm operative to move said shaft axially and to thereby move said second gear away from said first gear against the opposition of said biasing means in response to pivotal movement of said lever in a predetermined direction.
Claim 14
Dependent Claim
53 words
A combination as defined in claim 13, wherein said lever comprises a second arm provided with follower means and said driving member comprises cam means operative to pivot said lever is said predetermined direction by way of said follower means in response to movement of said driving member with reference to said carriage.
Claim 15
Dependent Claim
50 words
A combination as defined in claim 5, further comprising rotary work-supporting means, said tool support comprising a turret arranged to carry a plurality of tool holders and to maintain one such tool holder in a predetermined position with reference to said work-supporting means in each position of said tool support.
Claim 16
Dependent Claim
31 words
A combination as defined in claim 15, further comprising displacing means for moving the tool holder which dwells in said predetermined position substantially radially of and away from said work-supporting means.
Claim 17
Dependent Claim
43 words
A combination as defined in claim 16, further comprising disengaging means operative to disengage said locking means in retracted position of said carriage, said displacing means being operative to move tool holders away from said work-supporting means by way of said disengaging means.
Claim 18
Dependent Claim
160 words
A combination as defined in claim 17, wherein said tool suppoRt further comprises a shaft coaxially secured to said turret and rotatably and axially movably mounted in said carriage, said turret being arranged to move the tool holder which dwells in said predetermined position away from said work-supporting means in response to axial movement of said shaft in one direction, said locking means comprising a first gear fixed to said carriage, a second gear fixed to said tool support, and biasing means for biasing said shaft in the other axial direction to thereby maintain said second gear in mesh with said first gear, said disengaging means comprising a lever pivotably mounted in said carriage and having an arm operative to move said shaft in said one direction against the opposition of said biasing means in response to pivotal movement of said lever in a predetermined direction, said displacing means comprising an assembly for pivoting said lever in said predetermined direction.
Claim 19
Dependent Claim
79 words
A combination as defined in claim 18, wherein said disengaging means further comprises means for pivoting the lever in said predetermined direction independently of said assembly in response to movement of said driving member with reference to said carriage and to such an extent that said second gear is completely disengaged from said first gear, said assembly being operative to pivot said lever to an extent necessary to effect partial disengagement of said second gear from said first gear.
Claim 20
Dependent Claim
60 words
A combination as defined in claim 19, wherein at least one of said gears comprises a portion which is movable with reference to said one gear and means for biasing said portion into engagement with the other gear when said gears are partially disengaged from each other on operation of said assembly to thus prevent angular displacement of said turret.
Claim 21
Dependent Claim
88 words
A combination as defined in claim 20, wherein said portion of said one gear is a tooth member having a conical part which engages two adjacent teeth of other said gear when the second gear is partially disengaged from said first gear, said one gear further comprising means for holding said tooth member against movement beyond the other teeth of said one gear when said second gear is completely disengaged from said first gear so that the tooth member cannot interfere with indexing movements of said tool support.
Claim 22
Dependent Claim
31 words
A combination as defined in claim 19, wherein said assembly includes a fluid-operated cylinder having a portion movable into engagement with said lever to pivot the latter in said predetermined direction.
Claim 23
Dependent Claim
93 words
A combination as defined in claim 1, wherein said driving member comprises a toothed rack which is reciprocable in parallelism with the direction of movement of said carriage and wherein said mechanism comprises a rotary cylinder cam having a cam groove, a lever pivotably supported by said frame and including a first arm having a toothed portion meshing with said rack and a second arm having a follower engaging said cam groove, and drive means for rotating said cam at a plurality of speeds, said drive means comprising a plurality of prime movers.
Claim 24
Dependent Claim
32 words
A combination as defined in claim 23, wherein one of said prime movers comprises a reversible-pole electric AC motor and the other of said prime movers comprises a variable-speed electric DC motor.
Claim 25
Dependent Claim
22 words
A combination as defined in claim 23, further comprising a worm drive interposed between one of said prime movers and said cam.
Claim 26
Dependent Claim
36 words
A combination as defined in claim 25, further comprising at least one transmission interposed between said one prime mover and said worm drive and clutch means operative to connect said transmission with said one prime mover.
Claim 27
Dependent Claim
36 words
A combination as defined in claim 25, further comprising a planetary transmission interposed between said worm drive and said cam, said worm drive including a worm wheel which constitutes the ring gear of said planetary transmission.
Claim 28
Dependent Claim
18 words
A combination as defined in claim 27, wherein said cam constitutes the planet carrier of said planetary transmission.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |