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| Number | Title | Issue Date |
| 7625158 | Clamping assembly A clamping assembly for clamping a product to allow drilling and/or cutting of the product by a drilling or cutting assembly, the clamping assembly including control means, activation means, moving means and clamp foot means being operatively connected whereby the c... | 12/01/2009 |
| 7614832 | Countersink drill system A portable, air powered drill has an automated feed system and an adjustable dwell for producing countersunk holes in a workpiece. The feed system uses hydraulic cylinders and pneumatic control logic to control the feed rate, and the dwell time of a countersink dril... | 11/10/2009 |
| 7303363 | Pneumatic drill A drill has a tubular outer housing and a tubular inner housing. The inner housing is movable between extended and retracted positions. A pneumatic motor with a chuck mounts to the inner housing. Air pressure is delivered to annular pistons to cause the inner housin... | 12/04/2007 |
| 7267512 | Power assisted drill press A power assisted drill press having a feed cylinder fed by a variable pressure regulator which allows a user to controllably feed a bit and work material together while activating a drill motor to rotate the bit. An embodiment of the power assisted drill press utili... | 09/11/2007 |
| 7216421 | Stamping machine for mounting retention frame of heat sink to motherboard A stamping machine for mounting a retention frame of heat sink (510) to a motherboard (500) includes a machine body (100), an adjusting device (200), and a controlling unit (300). The machine body comprises a support plane (110 | 05/15/2007 |
| 7210878 | Feed adaptation core drill A process for controlling and a core drilling machine (1) having an electrical motor (2) for rotational drive of a core drill bit (3) having cutting edges (5) oriented axial to a work piece (4), a feeding means (6) for gener... | 05/01/2007 |
| 7189033 | Apparatus and methods for thrust sensing valves Apparatus and methods for thrust sensing valves are disclosed. In one embodiment, an apparatus includes a housing including an input port and an output port and further having a mounting portion adapted to be coupled to a manufacturing tool. A supply member is opera... | 03/13/2007 |
| 7172034 | Boring control method A boring control method for a machine tool for automatically boring a deep hole using a central control means performing boring with programmed control. In the boring, the number of processing and steps of the machine tool is kept minimum, load torque of a tool is d... | 02/06/2007 |
| 7137453 | Remote operated actuator system for drill string internal blowout preventer An air swivel ring includes a non-rotating member having an air inlet, a rotating member having an air outlet, and a split seal having a first sealing surface and coupled to one of the non-rotating member and the rotating member so that the first sealing surface on ... | 11/21/2006 |
| 7108459 | Power assisted drill press A power assisted drill press having a feed cylinder fed by a variable pressure regulator which allows a user to controllably feed a bit and work material together while activating a drill motor to rotate the bit. An embodiment of the power assisted drill press utili... | 09/19/2006 |
| 6997654 | Tapping tool for use with drill press A tapping device is configured to be used within a drill press or lathe or other device capable of holding a cylindrical object. The tapping device has an upper projection for being axially fixed in, for example, a drill press. The remainder of the body of the tappi... | 02/14/2006 |
| 6945145 | Quick action tap wrench A quick action, cam operated hand tool holder, such as a tap wrench. The cam is moveable between at least one released and one locked positions, preferably by a conventional T-handle. A third position may also be provided which may be either a second locked or a sec... | 09/20/2005 |
| 6637986 | Drilling apparatus and method The invention provides a drilling apparatus and method for drilling a hole in a workpiece. The drilling apparatus includes means for rotating a drill bit and means for advancing the rotating drill bit into a workpiece to a first depth. The drilling appara... | 10/28/2003 |
| 6585462 | Device in a tool holding assembly for moving a rotatable shaft in the axial direction A device in a tool holding assembly for axially moving a rotatable shaft on which is arranged at a first end of the shaft a device for performing work during rotation of the shaft includes an electric motor for rotating the shaft, and at least one bearing... | 07/01/2003 |
| 6565293 | Pneumatic machine tool A pneumatic machine tool includes a telescopic spindle having a drive shaft driven in rotation by a pneumatic motor. A hollow shaft is slidingly mounted on the drive shaft. A tool holder is associated with the hollow shaft and is driven in translation by ... | 05/20/2003 |
| 6539313 | Monitoring procedure and a monitoring installation for numerically controlled machine tools A monitoring procedure and a monitoring installation for machine tools with a motor-driven work spindle and a separate protection device. The actual mass inertia moment of a tool fitted into the work spindle is determined by measurement and compared with ... | 03/25/2003 |
| 6476575 | Method and system for adaptive control of turning operations An adaptive control system for adaptively controlling a turning operation performed at a work piece by a turning tool adjusts a controlled input operation parameter F to maintain an output operation parameter ƊM substantially at a predetermined value ƊM... | 11/05/2002 |
| 6340276 | Thread-cutting apparatus with reversal of direction of rotation A thread-cutting apparatus with reversal of the direction of rotation with a sun-and-planet gear with an axially displaceable reversing device for reversing the direction of rotation of a drill, held in the grip of a spindle, which can be pulled out prefe... | 01/22/2002 |
| 6309151 | Device and method for controlling the machining depth of a machine for machining multilayer printed circuit boards The device includes an operating head movable by a control unit with respect to a board for machining; the operating head includes a board holder device and an electric motor for a tool spindle; the rotor of the motor rotates with respect to the stator on... | 10/30/2001 |
| 6158929 | Electronically triggered surface sensor unit A method and apparatus for controlling the penetration depth of a cutting tool of a numerically controlled machine. A substantially cylindrical collar extends around at least part of the cutting tool with the collar being axially movable with respect to t... | 12/12/2000 |
| 6015249 | Device and method for controlling the machining depth of a machine for machining multilayer printed circuit boards The device includes an operating head movable by a control unit with respect to a board for machining; the operating head includes a board holder device and an electric motor for a tool spindle; the rotor of the motor rotates with respect to the stator on... | 01/18/2000 |
| 5819202 | Apparatus for detecting an abnormality of a control system In an apparatus for detecting an abnormality of a control system, the internal property calculating section thereof calculates an internal property of the control system only on the basis of a command value representing a position or a speed of the contro... | 10/06/1998 |
| 5802937 | Smart tool holder There is provided an apparatus for machining surfaces to accuracies within the nanometer range by use of electrical current flow through the contact of the cutting tool with the workpiece as a feedback signal to control depth of cut.... | 09/08/1998 |
| 5788428 | Power tool driving systems Methods and apparatus for cutting a workpiece with a cutting tool rotated relative to the workpiece by an electric drive motor and advanced in that workpiece by an electric tool advance. These methods and apparatus sense obstacles to cutting in the workpi... | 08/04/1998 |
| 5755537 | Portable precision drill A drill incorporates an axial feed drive, measuring system for determining the feed distance, a computer for controlling the axial feed drive as a function of the axial feed distance and a rotary drive for driving the tool spindle with pre-established on-... | 05/26/1998 |
| 5735646 | Interruptible feed rate drilling system In a system which interrupts the infeed signal generated by a CNC machine drive signals are applied to at least an RPM Control Electronics Module to drive the rotation of a cutting tool and the infeed drive motor electronics. A solid state relay intercept... | 04/07/1998 |
| 5639191 | Short coupled hydraulic lead screw tapping apparatus A short coupled hydraulic tapping apparatus for heavy duty tapping operations including a compact, lightweight, hydraulic tool unit and a remote hydraulic power unit, with the entire apparatus being designed for portability. The tool unit includes a struc... | 06/17/1997 |
| 5599142 | Drilling control apparatus In a drilling control apparatus for properly controlling a load sitting on a drill, a cutting reaction force estimate unit (1) estimates a disturbance load torque Yz acting on a servomotor (feed axis) (63) based on a speed signal X1z to the servomotor (63... | 02/04/1997 |
| 5538369 | Machine tool with tapping function In a machine tool equipped with a numerical control unit for digitally controlling a spindle motor, the number of revolutions and feed speed of a spindle for rigid tapping are obtained by designating the number of revolutions and the tapping pitch from an... | 07/23/1996 |
| 5354159 | Cable drive for drilling machine Z-axis A cable passes over pulleys to precisely control the linear movement of a machine element back and forth along a guideway. The cable path connects multiple pulleys on stationary machine elements to multiple pulleys on the movable machine element, affordin... | 10/11/1994 |
| 5307549 | Apparatus and method for synchronized control of machine tools A machine tool for performing drilling operations at a high speed on a rotating workpiece and for subsequently performing threading operations while minimizing loss time due to speed changes, based upon synchronization of the workpiece with tools that sep... | 05/03/1994 |
| 5207539 | Power feed mechanism for rotary cutting tool A rotary cutting tool is described which includes a motor for moving the tool vertically into a surface to be cut. The motor is connected to the tool by a clutch which is most preferably a ball clutch selectively engageable to transmit drive. The clutch f... | 05/04/1993 |
| 5193949 | Arrangement for driving a rotary tool An arrangement for driving a rotary tool is provided in which the tool shank is engaged and frictionally driven by the engagement of three or more drive rollers. Axial movement of the tool is accomplished by tilting the axes of the rollers as permitted by... | 03/16/1993 |
| 5158404 | Taper thread cutting machine and method A machine for taper threading the end of a bar such as reinforcing bar used in concrete construction utilizes a power operated vice to clamp and feed the bar end axially into a rotary head which contains chaser tooling holders which open uniformly on the ... | 10/27/1992 |
| 5123789 | Method of and apparatus for machining printed circuit board A method of and apparatus for effecting a machining operation, e.g. drilling, on a multi-layered printed circuit board utilizing a machining apparatus having a spindle for driving a tool. The spindle is movable in the axial direction of the tool and a pre... | 06/23/1992 |
| 5119759 | Apparatus for solder nozzle height sensing The method and apparatus of the present invention permit the accurate sensing of the height of a solder nozzle above a circuit board during operation of the solder nozzle. A non-contact limit switch, which provides an indication of the presence of a plana... | 06/09/1992 |
| 5116168 | Method and apparatus for controlling drilling operation In drilling control method and apparatus for making holes through a composite workpiece made of a plurality of materials having different machining properties, the workpiece is first drilled at a feed speed and a rotational speed of a drill which are sele... | 05/26/1992 |
| 5093972 | Tapping control unit A control unit capable of driving a compound lathe so that an end face of a rotating workpiece can be tapped. The control unit (100) comprises first and second control circuits (110, 120) for controlling the rotation of first and second spindles (10, 20) ... | 03/10/1992 |
| 5094574 | Spot facing method and apparatus for printed circuit board A spot facing method and apparatus for processing a printed circuit board incorporates a sensing device having a sensor probe capable of sensing the level of the surface of a printed circuit board, another sensing device for sensing the position of the en... | 03/10/1992 |
| 5087157 | Electromagnetic base drill with intermittent feed The states of contact switches are switched when a mode switch is turned on. If the drilling operation is effected by means of a drill motor in this state, an oscillation signal which is repeatedly set to "H" and "L" in a preset period corresponding to an... | 02/11/1992 |
