Class / Patent application number | Description | Number of patent applications / Date published |
279126000 | WITH MEASURING, INDICATING OR CONTROL MEANS | 24 |
20100013170 | Tool holding force measuring system and tool holding force measuring method - A tool holding force measuring system | 01-21-2010 |
20100072713 | ELECTRICAL STRESSING MEANS - The invention relates to an electrical stressing means having a housing ( | 03-25-2010 |
20100187776 | METHOD OF ACTUATING A CHUCK AND GRIPPING SYSTEM FOR CARRYING OUT THE METHOD - The invention relates to a method which is used to actuate a tensioning apparatus ( | 07-29-2010 |
20100230908 | HANDLER - A handler includes a table which supports an electronic device, a socket which is arranged to face the table, and a transport mechanism which transports the electronic device. The transport mechanism includes a contact head having a lead press with a recess for storing the electronic device, and a chuck sleeve which extends through the lead press, is arranged relatively movable from the lead press in a direction in which the chuck sleeve extends, and chucks the electronic device, an elevating mechanism which moves the contact head between the table and the socket, a pivot mechanism which pivots the contact head within the vertical plane, and a control unit which controls chucking and release of the electronic device by the chuck sleeve, and vertical movement and pivot of the contact head. | 09-16-2010 |
20100295258 | Z-STAGE WITH DYNAMICALLY DRIVEN STAGE MIRROR AND CHUCK ASSEMBLY - Substrate support apparatus and methods are disclosed. Motion of a substrate chuck relative to a stage mirror may be dynamically compensated by sensing a displacement of the substrate chuck relative to the stage mirror and coupling a signal proportional to the displacement in one or more feedback loops with Z stage actuators and/or XY stage actuators coupled to the stage mirror. Alternatively, a substrate support apparatus may include a Z stage plate a stage mirror, one or more actuators attached to the Z stage plate, and a substrate chuck mounted to the stage mirror with constraints on six degrees of freedom of movement of the substrate chuck. The actuators impart movement to the Z stage in a Z direction as the Z stage plate is scanned in a plane perpendicular to the Z direction. The actuators may include force flexures having a base portion attached to the Z stage plate and a cantilever portion extending in a lateral direction from the base portion. The cantilever portion may include a parallelogram flexure coupled between the base portion and a free end of the cantilever portion. | 11-25-2010 |
20110006490 | CHUCK WITH JAW FOR WORKPIECE HAVING CONSTANT HOLDING FORCE - A rotatable chuck for securing a workpiece in a machine includes a base element having a center and a plurality of jaw elements movable relative to the center. The jaw elements are movable to clamp the workpiece. The jaw elements exert a measurable clamping force on the workpiece. The clamping force exerted on the workpiece is measured and the jaw elements are moved relative to the center to vary the clamping force exerted on the workpiece. A comparator compares the measured clamping force to a predetermined clamping force and the jaw elements are moved, as the chuck is rotating, to adjust the clamping force on the workpiece relative to the predetermined clamping force. | 01-13-2011 |
20110272898 | Clamping device - A clamping device for machine tools is provided with a chuck, the clamping jaws of which are actuated by a draw rod, the clamping device having of a servomotor, a movement converter and a force accumulator, the servomotor is connectable to the movement converter for triggering clamping movements. The movement converter and the force accumulator are disposed in a housing connectable to the machine spindle, and in clamping position of the clamping device, the sliding sleeve can be decoupled from the servomotor, and the housing can be connected to the movement converter by means of the sliding sleeve. | 11-10-2011 |
20110304108 | Chuck Device and Method of Centring an Object in a Chuck - A chuck device is disclosed having two or more jaws for gripping an object, and an adjustment mechanism for adjusting the rotational centre of the object gripped in the jaws. The adjustment mechanism can have two adjusting devices, which can adjust the position of the rotational centre of the gripped object after it has been gripped in the chuck, and optionally a sensor mechanism for detecting the position of the object gripped within the jaws. The chuck device can typically sense the actual rotational centre of the gripped device at the location to be cut, by obtaining the measurement information from the sensor devices, and can then move the rotational centre of the jaws gripping the object to ensure that the object is centred at the position to be cut, and not necessarily at the chuck. The chuck device is suitable for use in machining devices in which the gripped object is held stationary and the cutting tool is moved rotationally and axially, and in this case, the chuck device is employed to move the gripped object to a position that is concentric with the rotational axis of the cutting tool. However, it is also applicable to other machining devices in which the gripped object is rotated relative to a cutting tool that is moved radially and axially but is not rotated. | 12-15-2011 |
20120074656 | TOOL CHUCK WITH INDICATOR MECHANISM - A power tool constructed in accordance to one example of the present teachings can include a housing having a handle and body portion. A motor can be disposed in the body portion and a drive spindle drivingly connected to the motor. A chuck can comprise a chuck spindle that supports a plurality of chuck jaws. A first sleeve can rotationally communicate with the chuck jaws to move the chuck jaws between a clamping position and a non-clamping position. An indicator mechanism can be disposed on the chuck having a first and second visual indicator. The indicator mechanism can move from a first position to a second position upon rotation of the first sleeve to a location that corresponds to a predetermined clamping force attained by the chuck jaws. | 03-29-2012 |
20120119451 | METHOD OF CHUCKING A TOOL OR A WORKPIECE AND APPARATUS FOR CARRYING OUT THE METHOD - The invention relates to a method of clamping a tool or a workpiece, using an electric actuator ( | 05-17-2012 |
20120205880 | MACHINE TOOL HAVING A ROTARY TRANSMITTER FOR DATA - The invention relates to a machine tool having a machine frame, a motor-driven machine spindle rotatably mounted on the machine frame, and at least one exchangeable processing head on the machine spindle. The processing head comprises a coupling element compatible with a receiving portion of the machine spindle. Furthermore, a rotary transmitter for data transfer between a stator fixed to the frame and a rotor fixed to the spindle is provided. The invention is characterized in that the machine spindle comprises a plurality of function modules on the spindle side as well as a line system forming a component of a spindle bus to which the function modules on the spindle side are connected to form subscriber stations of the spindle bus and wherein the spindle bus communicates via the rotary transmission path with a field bus fixed to the frame. | 08-16-2012 |
20130001898 | APPARATUS AND METHOD OF CONTROLLING CHUCK, AND EXPOSURE APPARATUS AND CONTROL METHOD THEREOF - Exemplary embodiments of the invention disclose an exposure apparatus and a method of tuning parameters of a chuck, which may reduce a time taken to level the chuck by previously tuning parameters of the chuck. The method of tuning parameters of a chuck includes detecting a tilt component of the chuck, performing chuck tilt adjustment to minimize the tilt component of the chuck, and tuning the parameters of the chuck if a residual tilt component is present after performing the chuck tilt adjustment. | 01-03-2013 |
20130033010 | Clamping device for machine tools - In a clamping device for machine tools, the device is provided with a power-operated chuck and clamping jaws actuated by a draw rod, the clamping device having an electrical servomotor with a changeover function, a movement converter, and a force accumulator for maintaining clamping force, the movement converter and the force accumulator being integrated in a tube-shaped jacket piece inserted in a housing of the clamping device and divided into two parts connected together. A spindle nut of the movement converter is rotatably supported between the two parts by a projection, and spring packs of the force accumulator are clamped between stop rings and a cover on the jacket piece. The jacket piece is mounted within the housing as to be moved axially by the draw rod via the movement converter. It is possible to determine the clamping force prevailing in the power-operated chuck using only one measuring point. | 02-07-2013 |
20130147133 | POWER-OPERATED CHUCK FOR A TOOL SPINDLE OF A MACHINE TOOL - A power-operated chuck for a tool spindle of a machine tool includes a chuck body and at least one chucking device which is guided in a radial guide of the chuck body and which, for exerting a desired chucking force on a workpiece chucked in the chuck, can be adjusted relative to the chuck body by a chucking-force generator via at least one drive member arranged in the chuck body. At least one chucking device has a measuring device for measuring a chucking force exerted by the chucking device on the workpiece chucked in the chuck and an evaluating device for evaluating the chucking force measured by the measuring device. | 06-13-2013 |
20130193654 | CHUCK - A chuck has a chuck body rotatable about an axis, a plurality of jaws radially displaceable on the body for gripping a workpiece, a chuck drive for rotating the chuck about the axis, and a center point axially shiftable in the body and axially engageable with the workpiece gripped by the jaws. An electric drive is coupled to the center point for axially shifting same. | 08-01-2013 |
20130277923 | POWER TOOL WITH AUTOMATIC CHUCK - A power tool having a tool portion, a chuck and a lock. The tool portion has a housing, a motor, and a spindle driven by the motor. The chuck has a body coupled to the spindle for rotation therewith, and a sleeve rotatably disposed about the body. The lock has a first lock structure pivotally coupled to the housing about a pivot axis, and a second lock structure. The first lock structure has a first locking feature. The second lock structure has a second locking feature and is coupled to the sleeve for rotation therewith. Pivoting the first lock structure into a first pivot position positions the first locking feature in a rotational path of the second locking feature. Engagement of the first and second locking features inhibits rotation of the sleeve so that rotation of the spindle will cause corresponding rotation of the body relative to the sleeve. | 10-24-2013 |
20140049011 | DEVICE FOR CHUCKING A TOOL OR WORKPIECE AND METHOD FOR OPERATING SUCH A CHUCKING DEVICE - A chucking device, which includes a rotationally-drivable spindle, a chucking means for mechanical chucking of a chucked object arranged on the spindle, a drive gearwheel, and a drive for rotationally driving the gearwheel. The chucking means has a rotating body, which has gear teeth and allows, through rotational movement, the chucked object to be chucked or unchucked. The drive gearwheel has gear teeth configured for complementary engagement with the gear teeth of the rotating body. The gear teeth of the rotating body and drive gearwheel are designed to provide flank play, such that the drive gearwheel can assume a neutral angular position with respect to the rotating body so that the gear teeth of the rotating body and drive gearwheel do not touch each other. | 02-20-2014 |
20140167369 | CHUCK - A chuck includes a chassis, a support member, a number of jaws, and a number of bolts. The chassis includes a mounting portion secured to a target machine. The support member is rotatably connected to the chassis and includes a support plate defining a number of radially extending first slots. The jaws each include an engaging surface. The bolts each include a head with a diameter greater than a width of the first slot and a shank connected to the head. The shank extends through one of the first slots of the support plate and is screwed into one of the jaws for securing the one of the jaws to the support plate. The engaging surfaces of the jaws is configured to contact a top surface of a workpiece placed on the support member for holding the workpiece in position. | 06-19-2014 |
20140319786 | APPARATUS AND METHOD FOR ALIGNING AND CENTERING WAFERS - A device for locating and engaging a notch on the perimeter of a circular wafer includes a notch locating component and a first plate. The notch locating component is configured to move linearly along a first axis and includes a front elongated component extending along a second axis perpendicular to the first axis and having a front surface, a back surface opposite to the front surface and a first protrusion extending from the front surface of the elongated component. The first protrusion has a shape complementing the shape of a notch formed on the perimeter of a circular wafer. As the notch locating component is driven toward the perimeter of the circular wafer along the first axis, a distance between the back surface of the elongated component and a front surface of the first plate is measured and the value of the measured distance is used to determine engagement of the first protrusion with the notch. | 10-30-2014 |
20140327214 | INSTRUMENT HOLDER FOR A PLOTTER - An instrument holder for holding an instrument having a body and a tip in a plotter. The instrument holder comprising a body portion, a tensioner portion for centering the instrument within the instrument holder and for gripping the instrument, and a cap portion for allowing a user thereof to adjust the grip provided by the tensioner portion on the instrument. | 11-06-2014 |
20160082521 | TOOL CLAMPING SYSTEM - The invention discloses a tool clamping system comprising a tool holder for clamping a tool, said tool holder being configured for being driven rotatingly; a tool secured to the tool holder; a tool shaft carried by the tool; at least one cutting edge carried by the tool; at least one piezo element for generating a voltage from mechanical vibration energy of the rotating tool clamping system; and at least one delay element selected form the group consisting of an inductor and a capacitor being connected to the at least one piezo element so as to form an electrical oscillating circuit, wherein the oscillating circuit is configured for monitoring at least one operating parameter of the tool clamping system. | 03-24-2016 |
20160144473 | TOOL CLAMPING SYSTEM - Disclosed is a tool system including a drive for driving a tool holder including an electromagnetic generator for generating electrical energy from inertial energy of the tool holder. The tool holder may be driven in rotation, wherein the electromagnetic generator comprises a rotor part, which is rotatably mounted on the tool holder, and a stator part on the tool holder cooperating with each other for generating a voltage by electromagnetic induction. Alternatively, an axially movable inertial mass can be used for utilization of an oscillating linear movement. | 05-26-2016 |
20160193665 | CLAMPING DEVICE | 07-07-2016 |
20160199920 | HAND-HELD POWER TOOL AND CONTROL METHOD | 07-14-2016 |