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| Number | Title | Issue Date |
| 5066176 | Probe for machine tool A probe device (10) for a machine tool includes a part sensing device (28) attached to the end of a piston rod (26), movable along a cylinder (12) mounted on the machine tool spindle head (14). The rod (26) is attached to a piston (42) that is air actuate... | 11/19/1991 |
| 4792267 | Carriage for a machine tool A carriage for a machine tool includes ways (16) and (18), a base (14) supporting the ways and a saddle (20) supported by bearings (22) and (24) for movement along the ways to carry a column (26) along the X-axis of the machine tool. The load bearing surf... | 12/20/1988 |
| 4784894 | Molded polymer composite A composite for constructing an article which is composed of a nonmetallic substance as represented by igneous rock of different particle sizes which are compacted and then surrounded by a solidified plastic resin. In a preferred manner, the igneous rock ... | 11/15/1988 |
| 4759115 | Numerically controlled automatic tool changing machining center having a bar-type spindle A numerically controlled automatic tool changing machining center is provided with a rotary driven spindle concentric within which is a spindle bar that may be reciprocated out from or into the spindle by a hydraulic cylinder. Located at the forward end o... | 07/26/1988 |
| 4750272 | Tool measuring device employing gap width detection A tool measuring apparatus for a machine tool is provided with a plunger (16) mounted to move along an axis (22) to vary the spacing between the end of the plunger and an inductive element (26) of an inductive displacement measuring device (24). Device (2... | 06/14/1988 |
| 4699276 | Chain-type tool storage magazine A magazine (10) for a machine tool (not shown) comprises a number of links (12) joined together by pins (14) to form a closed chain (16). A socket (32) is formed in each link for receiving a tool (34) to position the tool center line (36) midway between a... | 10/13/1987 |
| 4679970 | High speed toolholder for a machining center A high speed toolholder for driving a small high speed cutting tool from the large slow speed spindle of a machining center comprises a housing having a retention pin extending from side end thereof. An input shaft, dimensioned to be received in the machi... | 07/14/1987 |
| 4673076 | Rotary shuttle for machine tools A rotary shuttle (10) for a machine tool (11) in which no power mechanism is required for moving the pallet (14, 15) with the workpiece off of the shuttle (10) and on to the machine tool worktable (13A) or for withdrawing a pallet (14, 15) with the comple... | 06/16/1987 |
| 4643037 | Gear change mechanism A gear change mechanism for a machine tool in which shifting forks with sliding gears and constant mesh gearing using clutch and/or brake shifting is eliminated. A shiftable gear mechanism is presented in a gear train for meshing engagement with any one o... | 02/17/1987 |
| 4632612 | Spindle orientation apparatus An apparatus for angularly orienting a machine tool spindle (24) to a keylock position includes a resolver (39) which is directly mounted on a shaft (13) of a spindle drive motor (12), the spindle (24) rotating synchronously with the shaft (13) through a ... | 12/30/1986 |
| 4603485 | Leveling apparatus A device (10) for measuring the difference in elevation between first and second substantially horizontal surfaces (12a, 12b) includes first and second chambers (10a, 10b) respectively located on the surfaces (12a, 12b). The chambers contain quantities of... | 08/05/1986 |
| 4575918 | Tool change mechanism A tool changer for interchanging tools between a machine tool and a magazine in a minimum amount of time so as to reduce the down time of a machine tool. The tool changer includes a frame or base member for mounting on the machine tool with the frame memb... | 03/18/1986 |
| 4558506 | Numerically controlled automatic tool changing machining center having a bar-type spindle A numerically controlled automatic tool changing machining center is provided with a rotary driven spindle concentric within which is a spindle bar that may be reciprocated out from or into the spindle by a hydraulic cylinder. Located at the forward end o... | 12/17/1985 |
| 4536111 | Machine tool having numerically controlled adjustable arbor set up for straddle milling A machine tool having a numerically controlled adjustable arbor for facilitating different straddle milling operations on random workpieces without the need for manual adjustment of the cutter width comprises a frame which carries a power station thereon.... | 08/20/1985 |
| 4533859 | Motorized ball nut A motorized nut for use in conjunction with a fixedly secured lead screw for displacing a movable member along a fixed member into which the lead screw is journaled parallel to the desired path of member movement, includes an induction motor whose case is... | 08/06/1985 |
| 4480738 | Workpiece storage and shuttle apparatus An improved workpiece storage and shuttle apparatus is fabricated of a base into which a carousel is journaled for indexable movement. Located about the periphery of the carousel are a plurality of workpiece storage pedestals, each pedestal having a pair ... | 11/06/1984 |
| 4472783 | Flexible manufacturing system An improved flexible manufacturing system comprises a plurality of computer numerically controlled machine tools, each controlled by a machine control system which is supplied with a plurality of sets of machine NC part programs and a program map from a s... | 09/18/1984 |
| 4462080 | Voice actuated machine control A voice actuated control system suitable for use on a computer numerically controlled (CNC) machine tool includes a pair of radio frequency transmitters and a pair of radio frequency receivers, one of the radio frequency receivers and one of the radio fre... | 07/24/1984 |
| 4449866 | Servo-controlled spindle drive system A servo system for the rotary spindle of a machine tool in which the spindle is driven by a drive motor through a gear train having shiftable gears for changing the rate of rotation of the spindle. The transducer for the servo system is mounted directly o... | 05/22/1984 |
| 4443928 | Multiple-spindle tool changer Apparatus for simultaneously changing all of the tools in a multiple spindle machining center is provided with a number of tool carrying devices, each device corresponding to a different one of the spindles. Each tool carrying device is capable of selecti... | 04/24/1984 |
| 4432258 | Controllable tool feeding apparatus A tool feeding head is provided, which is adapted for rapid attachment to and detachment from a machine spindlehead. The head includes a shaft which is joinable to a machine spindle of the spindlehead for coupling rotary driving motion from the spindle to... | 02/21/1984 |
| 4427325 | Multiple spindle toolhead An improved multiple spindle toolhead for a machine tool includes a body having at least one tool-carrying spindle journaled into one side thereof and having an input shaft coupled to the spindle and extending from the body side opposite to the spindle fo... | 01/24/1984 |
| 4421443 | High speed machine tool spindle assembly A high speed machine tool spindle assembly for firmly retaining a cutting tool therein, notwithstanding machine tool vibration, includes a spindle having an axially extending bore therethrough. Integrated to each end of the spindle is a tool gripping coll... | 12/20/1983 |
| 4404727 | Machine tool operable as both a chucking type lathe and as a machining center A machine tool operative as both a chucking type lathe and as a horizontal spindle machine center comprises a rotatable spindle horizontally journaled to a spindlehead vertically reciprocal on a machine tool upright, the upright being slidably mounted for... | 09/20/1983 |
| 4400859 | Machining centers for machining tubular workpieces A machining center for machining the interior of an elongate tubular workpiece includes a bed on which a rotatably indexable member is slidably mounted for movement on the bed along a first axis. Removably fastened on the indexable member in spaced parall... | 08/30/1983 |
| 4376970 | High speed digital position monitoring system An electronic control system for a machine tool employs a monitoring system for monitoring the absolute position of a reversibly (and linearly or rotationally) movable moving member in the machine tool. The monitoring system includes a clock, a digital fe... | 03/15/1983 |
| 4334363 | Tool setting apparatus Apparatus for setting cutting tool length on numerically controlled machine tools includes a base having a leg extending perpendicularly therefrom. A rod is fastened to the base parallel to the leg. Overlying the end of the rod distal from the base is a c... | 06/15/1982 |
| 4329770 | Automatic tool changer An automatic tool changer for a machine tool having a rotary toolhead with cross-feed slide includes a tilt unit having a tool socket which is pivotal between a first position, parallel to the axis of a machine tool storage magazine to permit loading or u... | 05/18/1982 |
| 4306350 | Automatic tool changer and tool storage arrangement for machine tool A combined tool storage and tool change arrangement for use with a machine tool of the type which includes a power driven rotatable spindle having a socket which receives a tool shank of a predetermined size. The tool storage arrangement comprises a main ... | 12/22/1981 |
| 4300086 | Control circuit for A.C. induction motor The voltage and frequency of an A.C. excitation signal applied to the stator windings of an A.C. induction motor are varied in proportion to the amplitude of current flowing in the stator windings. The stator current flow is sensed by a feedback resistor ... | 11/10/1981 |
| 4292577 | A.C. Motor control circuit A tachometer is coupled to the rotor of an A.C. motor and generates an output voltage proportional to the rotor's speed. A VELOCITY COMMAND voltage is generated having an amplitude which specifies a desired rotor speed. The tachometer voltage is subtracte... | 09/29/1981 |
| 4288909 | Automatic tool changer for machine tool An automatic tool changer for transferring single tools and/or multiple spindle toolheads between a tool storage magazine and a horizontal spindle of a machine tool. A plurality of single tools and/or toolheads are stored in the tool storage magazine with... | 09/15/1981 |
| 4272216 | Machine tool lubrication system The control valve for a hydrostatic bearing on a machine tool slide is opened when motion is commanded along the corresponding machine tool axis to eliminate sticking at the start of motion. The valve is closed when the velocity of motion exceeds a predet... | 06/09/1981 |
| 4266120 | Unmanned machining center with tool checking A numerically controlled machining center has a tool magazine, automatic tool changer, workpiece shuttle, and a workpiece magazine which holds enough workpieces for operation by the machining center for an entire shift of approximately eight hours. The nu... | 05/05/1981 |
| 4261675 | Machine tool with pulsating cutting force The cutting force applied between the cutting tool and the workpiece of a machine tool is periodically pulsated to expedite removal of material from the workpiece. The periodic cutting force pulsation is produced by periodically varying the spindle speed ... | 04/14/1981 |
| 4238167 | Toolholder adapter A toolholder adapter has a cylindrical body, a cylindrical shank extending axially from one end of the body, a cylindrical flange extending radially from the body, a tapered socket within the body for receiving a tapered shank toolholder, and a clamping n... | 12/09/1980 |
| 4238034 | Automatic tool changer for machine tool A tool storage drum which is adapted to receive and store a plurality of toolholders is rotatably mounted on top of the upright of a horizontal machining center behind the spindle thereof. A tool changer carriage carrying a tool change arm is pivotally mo... | 12/09/1980 |
| 4221043 | Automatic tool changer for multiple spindle machine tool Two pairs of crossed tool change arms are mounted adjacent to four spindles which are rotatably mounted on a common spindlehead. Each pair of crossed tool change arms is mounted on a common shaft which is rotatable and is movable along its axis and is pos... | 09/09/1980 |
| 4211512 | Rotary table with ballscrew drive A rotary table is driven by a pair of perpendicularly disposed linear slides which are each driven by a ballscrew drive. One of the linear slides is mounted on the movable member of the other linear slide and is coupled to the rotary table by a crank stud... | 07/08/1980 |
| 4208718 | Method of optimizing the operation of a computer controlled machine tool The feed rate of a computer controlled machine tool is periodically calculated every 9.6 milliseconds to produce a horsepower equal to a target horsepower at the cutting tool during a milling operation. When the feed rate rises above a predetermined level... | 06/17/1980 |
