Patent US3725987A successfully refreshed from Google Patents.
US3725987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tool with spaced turret heads mounted on a cross slide
Assignee: Toyoda Koki KK
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Filing: 1971-10-13
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Granted: 1973-04-10
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Expires: 1991-10-13
Abstract
Abstract A machine tool is provided with two turret heads indexably mounted in spaced relation on a common carriage. One of the turret heads rotatably mounts a plurality of tool spindles for drivingly receiving rotary cutting tools. The other of the turret heads fixedly supports a plurality of stationary cutting tools. The tool spindles are rotated by a driving device having a power source common to a workpiece driving device wherein the workpiece is rotatable about its own axis. The common carriage is movable either in the axial direction or in the radial direction of the workpiece. An indexing device is selectively connected to a main spindle mounting the workpiece supporting device for angularly indexing the workpiece and another indexing device selectively indexes the turret heads for angularly positioning a desired tool in a machining zone.
Inventors
- 👤 M Kurimoto
- 👤 Y Ochiai
- 👤 K Nomura
- 👤 A Tsuboi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:35
CPC Classifications
B; B23; B23B; B23B3/00; B23B3/16; B23B3/164; Y; Y10; Y10T; Y10T29/00; Y10T29/51; Y10T29/5104; Y10T29/5109; Y10T29/5114; Y10T29/5152; Y10T29/5153; Y10T29/5154; Y10T29/5155
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
166 words
A machine tool for performing a variety of machining operations, comprising: a frame; a spindle rotatably mounted on said frame; a saddle slidably mounted on said frame; a cross slide slidably mounted on said saddle; a first turret head having means for rotatably mounting a plurality of tool spindles for drivingly receiving rotary cuttiNg tools; a second turret head having means for mounting stationary cutting tools, said first and second turret heads being indexably mounted in spaced-apart relation on said cross slide; a power driving member for rotating said spindle and said tool spindles; means mounted on said spindle for drivingly supporting a workpiece; means mounted on said frame for indexing said spindle; means mounted on said frame for sliding said saddle; means mounted on said saddle for sliding said cross slide; means mounted on said cross slide for indexing said first and said second turret heads; and means for transmitting the power of said power driving member selectively to said spindle and said tool spindles.
Claim 2
Dependent Claim
166 words
A machine tool for performing a variety of machining operations, comprising: a frame; a spindle rotatably mounted on said frame; a saddle slidably mounted on said frame; a cross slide slidably mounted on said saddle; a first turret head having means for rotatably mounting a plurality of tool spindles for drivingly receiving rotary cuttiNg tools; a second turret head having means for mounting stationary cutting tools, said first and second turret heads being indexably mounted in spaced-apart relation on said cross slide; a power driving member for rotating said spindle and said tool spindles; means mounted on said spindle for drivingly supporting a workpiece; means mounted on said frame for indexing said spindle; means mounted on said frame for sliding said saddle; means mounted on said saddle for sliding said cross slide; means mounted on said cross slide for indexing said first and said second turret heads; and means for transmitting the power of said power driving member selectively to said spindle and said tool spindles.
Claim 3
Dependent Claim
42 words
A machine tool according to claim 1, wherein said spindle indexing means comprises: a pulse motor on said frame for rotating said spindle in accordance with pulses applied thereto; and a clutching device for selectively connecting said pulse motor with said spindle.
Claim 4
Dependent Claim
209 words
A machine tool according to claim 1, wherein said first and said second turret heads each individually comprises: a shaft slidably and rotatably mounted on said cross slide; a body secured to said shaft for supporting said cutting tools; a pair of co-operatively intermeshing disengagable coupling members respectively secured to said body and said cross slide for retaining said body in a selected position; a pair of co-operatively disengagable clutching members, one of said members being rotatably mounted on said shaft, the other of said members being fixedly secured to said shaft; a driving gear concentrically secured to one of said clutching members; and first power operable means connected to move said body axially in one direction for disengaging said coupling members and engaging said clutching members, said members being reversely operative to move said body axially in the opposite direction to re-engage said coupling members for effecting final angular positioning movement of said body and to disengage said clutching members; and further wherein said indexing means for said first and second turret heads comprises a second power operable means common to said first and said second turret heads being normally engaged with said driving gear for rotating said body a predetermined angle upon engagement of said clutching members.
Claim 5
Dependent Claim
74 words
A machine tool according to claim 3, in which said second power operable means comprises: a cylinder mounted on said cross slide; a piston slidably received in said cylinder; a rack bar connected to said piston; a driving shaft rotatably mounted on said cross slide; a gear secured to said driving shaft in meshing engagement with said rack bar; and another gear secured to said driving shaft and normally meshed with said driving gear.
Claim 6
Dependent Claim
140 words
A machine tool according to claim 3, wherein said first turret head further comprises: driven gears respectively connected to said tool spindles; a driving gear rotatably mounted on said cross slide and intermeshingly disengagable to drive one of said driven gears upon engagement of said coupling members; detents pivotably mounted on said body for fixing the angular position of each of said driven gears; spring means for urging said detents to be engaged with said driven gears; a pin secured to said cross slide to rotate one of said detents against the force of said spring means for causing one of said detents to disengage the one of said driven gears upon the engagement of said coupling members; and means for fixing the angular position of said driving gear relative to said driven gears upon disengagement of said coupling members.
Claim 7
Dependent Claim
144 words
A machine tool according to claim 1, wherein said transmitting means comprises: a transmission for changing the rotational speed being transmitted from said power driving member; a first clutch disposed between said transmission and said spindle; A first spline shaft rotatably mounted on said frame along the sliding direction of said saddle; a second clutch disposed between said transmission and said first spline shaft; a second spline shaft rotatably mounted on said saddle along the sliding direction of said cross slide; a first gearing mounted on said saddle for drivingly connecting said first spline shaft with said second spline shaft; driven gears respectively connected to said tool spindles; a driving gear rotatably mounted on said cross slide to selectively drive one of said driven gears; and a second gearing mounted on said cross slide for drivingly connecting said second spline-shaft with said driving gear.
Claim 8
Dependent Claim
127 words
A machine tool according to claim 6, further comprising: a driven member rotatably mounted on said first spline shaft and drivingly connected to said transmission through said second clutch; a friction coupling member slidably keyed to said first spline shaft, said friction coupling member having conical recesses therein; spring means disposed to resiliently urge said friction coupling toward said driven member for drivingly connecting said friction coupling member with said driven member; conical projection members secured to said driven member to complementarily engage said conical recesses for axially shifting said friction coupling member under the excessive load applied to said first spindle shaft; and switching means adjacent said friction coupling member to be operated by the axial shift of said friction coupling member for stopping said motor.
Claim 9
Dependent Claim
219 words
A machine tool for performing a variety of machining operations, comprising: a bed having inclined and vertically spaced guide ways thereon; a headstock mounted on said bed; a spindle rotatably mounted on said headstock, the axis of said spindle being parallel with said guide ways; a saddle slidably mounted on said guide ways, said saddle having laterally spaced guide ways thereon; a cross slide slidably mounted on said laterally spaced guide ways; a first turret head indexably mounted on the upper portion of said cross slide having means for rotatably mounting a plurality of tool spindles adapted to drivingly receive rotary cutting tools; a second turret head indexably mounted on the lower portion of said cross slide having means for mounting stationary cutting tools; a power driving member for rotatinging said spindle and said tool spindles; means mounted on said spindle for drivingly supporting a workpiece; means mounted on said bed for indexing said spindle; feed means mounted on said bed for moving said saddle toward and away from said workpiece supporting means; feed means mounted on said saddle for transversely moving said cross slide; means mounted on said cross slide for indexing said first and said second turret heads; and means for transmitting the power of said power driving member selectively to said spindle and said tool spindles.
Claim 10
Dependent Claim
219 words
A machine tool for performing a variety of machining operations, comprising: a bed having inclined and vertically spaced guide ways thereon; a headstock mounted on said bed; a spindle rotatably mounted on said headstock, the axis of said spindle being parallel with said guide ways; a saddle slidably mounted on said guide ways, said saddle having laterally spaced guide ways thereon; a cross slide slidably mounted on said laterally spaced guide ways; a first turret head indexably mounted on the upper portion of said cross slide having means for rotatably mounting a plurality of tool spindles adapted to drivingly receive rotary cutting tools; a second turret head indexably mounted on the lower portion of said cross slide having means for mounting stationary cutting tools; a power driving member for rotatinging said spindle and said tool spindles; means mounted on said spindle for drivingly supporting a workpiece; means mounted on said bed for indexing said spindle; feed means mounted on said bed for moving said saddle toward and away from said workpiece supporting means; feed means mounted on said saddle for transversely moving said cross slide; means mounted on said cross slide for indexing said first and said second turret heads; and means for transmitting the power of said power driving member selectively to said spindle and said tool spindles.
Claim 11
Dependent Claim
143 words
A machine tool according to claim 8, wherein said power-transmitting means comprises: a transmission for changing the rotational speed being transmitted from said power driving member; a first clutch disposed between said transmission and said spindle; a first spline shaft rotatably mounted on said bed along the sliding direction of said saddle; a second clutch disposed between said transmission and said first spline shaft; a second spline shaft rotatably mounted on said saddle along the sliding direction of said cross slide; first gearing mounted on said saddle for drivingly connecting said first spline shaft with said second spline shaft; driven gears respectively connected to said tool spindles; a driving gear rotatably mounted on said cross slide to selectively drive one of said driven gears; and second gearing mounted on said cross slide for drivingly connecting said second spline shaft with said driving gear.
Claim 12
Dependent Claim
212 words
A maChine tool according to claim 8, wherein each of said first and said second turret heads individually comprises: a shaft slidably and rotatably mounted on said cross slide; a body secured to said shaft for rotatably supporting said tool spindles; a pair of co-operatively intermeshing disengagable coupling members respectively secured to said body and said cross slide for retaining said body in a selected position; a pair of co-operatively disengagable clutching member, one of said members being rotatably mounted on said shaft, the other of said members being fixedly secured to said shaft; a driving gear concentrically secured to the one of said clutching members; and first power operable means connected to move said body axially in one direction for disengaging said coupling members and engaging said clutching members, said members being reversely operative to move said body axially in the opposite direction to re-engage said coupling members for effecting final angular positioning movement of said body and to disengage said clutching members; and wherein said indexing means of said first and said second turret heads comprises second power operable means common to said first and said second turret heads and normally engaged with said driving gear for rotating said body through a predetermined angle upon engagement of said clutching members.
Claim 13
Dependent Claim
73 words
A machine tool according to claim 10, in which said second power operable means comprises: a cylinder mounted on said cross slide; a piston slidably received in said cylinder; a rack bar connected to said piston; a driving shaft rotatably mounted on said cross slide; a gear secured to said driving shaft in meshing engagement with said rack bar; and gears secured to said driving shaft and normally meshed with said driving gears.
Claim 14
Dependent Claim
139 words
A machine tool according to claim 8, wherein said first turret head further comprises: driven gears respectively connected to said tool spindles; a driving gear rotatably mounted on said cross slide and intermeshingly disengagable to drive one of said driven gears upon engagement of said coupling members; detents pivotably mounted on said body for fixing the angular position of each of said driven gears; spring means for urging said detents to be engaged with said driven gears; a pin secured to said cross slide to rotate one of said detents against the force of said spring means for causing one of said detents to disengage the one of said driven gears upon engagement of said coupling members; and means for fixing the angular position of said driving gear relative to said driven gears upon disengagement of said coupling members.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |