US3742791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lathe
Assignee: Individual
•
Filing: 1971-03-15
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Granted: 1973-07-03
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Expires: 1991-03-15
Abstract
Abstract A lathe having multiple face plates disposed on a turn table at constant center angular intervals about the axial center of the turn table with at least one of them being in a cutting station and the remaining face plates being in stand-by stations for replacement of a cut work or works with a new work or works, which turn table turns by a prescribed turning angle so as to bring the new work upholding face plate or plates into the cutting station when one cycle cutting operation is completed.
Inventors
- 👤 K Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:47
CPC Classifications
B; B23; B23B; B23B3/00; B23B3/30; B23Q; B23Q16/00; B23Q16/02; B23Q16/08; B23Q16/10; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5124; Y10T29/5127; Y10T29/5128; Y10T82/00; Y10T82/25; Y10T82/2511; Y10T82/2514
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
440 words
In a multi-spindle automatic lathe: a head stock; a turntable rotatably and reciprocally mounted on said head stock and having means defining a plurality of apertures therethrough; reciprocating means for reciprocating said turntable between a projected position and a working position relative to said head stock, said means comprising a rotatable shaft connected to said turntable, means defining a chamber enclosing and spaced from a portion of said shaft, a piston secured to said shaft and movably disposed in said chamber, and actuating means for reciprocably moving said piston within said chamber thereby reciprocating said shaft and said turntable; turning means for turning said turntable in said projected position comprising a rod having teeth along its axial length, a gear connected to said shaft and engaging the teeth of said rod, and a actuator connected to said rod for reciprocally moving said rod thereby effecting rotation of said gear, said shaft and said turntable; locking means for locking said turntable when said turntable is in said working position comprising a first gear secured to said turntable and a second gear secured to said head stock, said first gear engaging said second gear when said turntable is in said working position thereby locking said turntable to prevent rotation, and said first gear being disengaged from said second gear when said turntable is in said projected position thereby unlocking said turntable for rotation; a plurality of chucks disposed on said turntable each disposed in alignment with one of said apertures extending through said turntable; a plurality of chuck shafts rotatably connected to said turntable, each of said chuck shafts extending through one of said apertures and having one end connected to one Of said chucks for effecting rotation thereof when said chuck shaft rotates and having a gear connected to the other end thereof; rotating means for rotating said chuck shafts comprising a first rotatable shaft having a gear at one end thereof, a second rotatable shaft having a gear at one end engaging the gear of said first rotatable shaft and having clutching means at the other end thereof for engaging the gears of said chuck shafts when said turntable is in said working position and disengaging the gears of said chuck shafts when said turntable is in said projected position, and motive force means for developing a motive force for effecting rotation of said first rotatable shaft thereby effecting rotation of said second rotatable shaft by their engaging gears; whereby said second rotatable shaft effects rotation of one of said chuck shafts and one of said chucks when said clutching means engages the gears of one of said chuck shafts.
Claim 2
Dependent Claim
440 words
In a multi-spindle automatic lathe: a head stock; a turntable rotatably and reciprocally mounted on said head stock and having means defining a plurality of apertures therethrough; reciprocating means for reciprocating said turntable between a projected position and a working position relative to said head stock, said means comprising a rotatable shaft connected to said turntable, means defining a chamber enclosing and spaced from a portion of said shaft, a piston secured to said shaft and movably disposed in said chamber, and actuating means for reciprocably moving said piston within said chamber thereby reciprocating said shaft and said turntable; turning means for turning said turntable in said projected position comprising a rod having teeth along its axial length, a gear connected to said shaft and engaging the teeth of said rod, and a actuator connected to said rod for reciprocally moving said rod thereby effecting rotation of said gear, said shaft and said turntable; locking means for locking said turntable when said turntable is in said working position comprising a first gear secured to said turntable and a second gear secured to said head stock, said first gear engaging said second gear when said turntable is in said working position thereby locking said turntable to prevent rotation, and said first gear being disengaged from said second gear when said turntable is in said projected position thereby unlocking said turntable for rotation; a plurality of chucks disposed on said turntable each disposed in alignment with one of said apertures extending through said turntable; a plurality of chuck shafts rotatably connected to said turntable, each of said chuck shafts extending through one of said apertures and having one end connected to one Of said chucks for effecting rotation thereof when said chuck shaft rotates and having a gear connected to the other end thereof; rotating means for rotating said chuck shafts comprising a first rotatable shaft having a gear at one end thereof, a second rotatable shaft having a gear at one end engaging the gear of said first rotatable shaft and having clutching means at the other end thereof for engaging the gears of said chuck shafts when said turntable is in said working position and disengaging the gears of said chuck shafts when said turntable is in said projected position, and motive force means for developing a motive force for effecting rotation of said first rotatable shaft thereby effecting rotation of said second rotatable shaft by their engaging gears; whereby said second rotatable shaft effects rotation of one of said chuck shafts and one of said chucks when said clutching means engages the gears of one of said chuck shafts.
Claim 3
Dependent Claim
178 words
In a multi-spindle automatic lathe according to claim 1: including another locking means for locking said turntable when said turntable is in said working position comprising a brake shoe disposed to contact a portion of said turntable when said turntable is in said working position, a reciprocating rod connected at one end to said brake shoe, a lever pivotally connected to said head stock and having one end connected to said rod, a reciprocally mounted shaft connected to the other end of said lever and having a piston connected at one end, means defining a chamber enclosing and spaced from a portion of said shaft and having said piston disposed therein, and actuating means for reciprocally moving said piston within said chamber thereby effecting reciprocation of said shaft and pivotal movement of said lever, whereby pivotal movement of said lever effects reciprocation of said rod thereby effecting alternate displacement of said brake shoe into frictional engagement with said turntable to lock said turntable or displacement of said brake shoe out of engagement with said turntable to unlock same.
Claim 4
Dependent Claim
279 words
In a multi-spindle automatic lathe: a head stock; a rotatable turntable reciprocally mounted on said head stock to reciprocate between a projected position and a seated position relative to said head stock; a plurality of rotatable chucks rotatably disposed on said turntable; indexing means engageable with said turntable when same is in said projected position for effecting turning indexing movement of said turntable to selectively index said chucks to a work position; rotating means engageable with one of said chucks when same is in said work position for effecting rotation thereof when said turntable is in said seated position; first clutching means actuatable to a clutched state in response to movement of said turntable to said seated position for effecting engagement of said rotating means and one of said chucks when the latter is in said work position and actuatable to a declutched state for effecting disengagement of same in response to movement of said turntable to said projected position; second clutching means actuatable to a clutched state in response to movement of said turntable to said projected position for effecting engagement of said indexing means and said turntable and actuatable to a declutched state for effecting disengagement of same in response to movement of said turntable to said seated position; and actuating means for actuating said turntable to said seated position to effect actuation of said first clutching means to its clutched state simultaneously with actuation of said second clutching means to its declutched state and for actuating said turntable to said projected position to effect actuation of said first clutching means to its declutched state simultaneously with actuation of said second clutching means to its clutched state.
Claim 5
Dependent Claim
279 words
In a multi-spindle automatic lathe: a head stock; a rotatable turntable reciprocally mounted on said head stock to reciprocate between a projected position and a seated position relative to said head stock; a plurality of rotatable chucks rotatably disposed on said turntable; indexing means engageable with said turntable when same is in said projected position for effecting turning indexing movement of said turntable to selectively index said chucks to a work position; rotating means engageable with one of said chucks when same is in said work position for effecting rotation thereof when said turntable is in said seated position; first clutching means actuatable to a clutched state in response to movement of said turntable to said seated position for effecting engagement of said rotating means and one of said chucks when the latter is in said work position and actuatable to a declutched state for effecting disengagement of same in response to movement of said turntable to said projected position; second clutching means actuatable to a clutched state in response to movement of said turntable to said projected position for effecting engagement of said indexing means and said turntable and actuatable to a declutched state for effecting disengagement of same in response to movement of said turntable to said seated position; and actuating means for actuating said turntable to said seated position to effect actuation of said first clutching means to its clutched state simultaneously with actuation of said second clutching means to its declutched state and for actuating said turntable to said projected position to effect actuation of said first clutching means to its declutched state simultaneously with actuation of said second clutching means to its clutched state.
Claim 6
Dependent Claim
88 words
In a multi-spindle automatic lathe according to claim 3: including locking means for locking said turntable when same is in said seated position, said means comprising a first gear secUred to said turntable and a second gear secured to said head stock, said first gear engaging said second gear when said turntable is in said seated position thereby locking said turntable to prevent rotation, and said first gear being disengaged from said second gear when said turntable is in said projected position thereby unlocking said turntable for rotation.
Claim 7
Dependent Claim
178 words
In a multi-spindle automatic lathe according to claim 4: including another locking means for locking said turntable when said turntable is in said seated position comprising a brake shoe disposed to contact a portion of said turntable when said turntable is in said seated position, a reciprocating rod connected at one end to said brake shoe, a lever pivotally connected to said head stock and having one end connected to said rod, a reciprocally mounted shaft connected to the other end of said lever and having a piston connected at one end, means defining a chamber enclosing and spaced from a portion of said shaft and having said piston disposed therein, and actuating means for reciprocally moving said piston within said chamber thereby effecting reciprocation of said shaft and pivotal movement of said lever, whereby pivotal movement of said lever effects reciprocation of said rod thereby effecting alternate displacement of said brake shoe into frictional engagement with said turntable to lock said turntable and displacement of said brake shoe out of engagement with said turntable to unlock same.
Claim 8
Dependent Claim
146 words
In a multi-spindle automatic lathe according to claim 3; wherein said actuating means comprises a shaft connected to said turntable, and means for effecting movement of said shaft relative to said head stock; wherein said first clutching means comprises one clutch gear connected to said chuck, and another clutch gear connected to said rotating means, said one clutch gear and said another clutch gear being engaged when said first clutching means is in said clutched state and disengaged when said clutching means is in said declutched state; and wherein said second clutching means comprises a first clutch gear connected to said shaft, and a second clutch gear connected to said indexing means, said first clutch gear being engaged with said second clutch gear when said second clutching means is in said clutched state and being disengaged when said second clutching means is in said declutched state.
Claim 9
Dependent Claim
63 words
In a multi-spindle automatic lathe according to claim 6; wherein said means for effecting movement of said shaft comprises means defining a chamber enclosing and spaced from said shaft, a piston secured to said shaft and movably disposed in said chamber, and actuating means for reciprocally moving said piston within said chamber thereby effecting movement of said shaft and reciprocation of said turntable.
Claim 10
Dependent Claim
69 words
In a multi-spindle automatic lathe according to claim 3; wherein said indexing means comprises a rod having teeth along its axial length, a gear connected to said shaft and engaging the teeth of said rod, and an actuator connected to said rod for reciprocally moving said rod a predetermined distance thereby effecting rotation of said gear, said shaft and said turntable and indexing said chucks to said work position.
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |