| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 279400010 | WITH FLUID-PRESSURE ACTUATOR | 42 |
| 20100109261 | Clamping chuck for radially clamping workpieces with a cylindrical outer clamping surface - A clamping chuck ( | 05-06-2010 |
| 20130033009 | HYDRAULIC COUPLING SYSTEM FOR COUPLING A SHELL MILL TO AN ADAPTER - A hydraulic coupling system includes an adapter, a shell mill, a threaded member, and a chucking membrane. The adapter includes a tapered pilot disposed on and extending from an end face. The shell mill includes a central counter bore for enabling the pilot of the adapter to be inserted therein. The threaded member includes at least one sealing member and is capable of being threaded into a threaded bore of the shell mill. The chucking membrane includes an intermediate portion disposed between two flanges and forms a fluid-tight channel for hydraulic fluid. The chucking member has a tapered inside surface. When the threaded member is threaded into the shell mill, the tapered surfaces of the pilot and the chucking membrane cause an axial force to seat the end face of the shell mill firmly against the end face of the adapter. | 02-07-2013 |
| 20130147130 | SPINDLE/TOOL COMBINATION FOR A MACHINE TOOL - A spindle/tool combination for a machine tool is provided, including a tool, a spindle, on which the tool can be releasably fixed and by means of which the tool can be rotated, wherein the tool has at least one linearly movable rod and the spindle comprises a loading device, which acts on the at least one linearly movable rod of the tool, and a pull/push coupling device, by means of which the at least one rod of the tool can be coupled to the loading device, the at least one rod being actuable by means of the loading device by pushing and pulling when coupled, wherein the pull/push coupling device comprises a clamping jaw and the clamping jaw is arranged in the tool. | 06-13-2013 |
| 20140175760 | Expansion Chuck - The invention relates to a hydraulic expansion chuck with a basic body, with an expansion bush which is received in the basic body and defines a reception space for a tool to be chucked, and with a pressure chamber which is delimited between the expansion bush and the basic body, at least one solder region being provided, in which the expansion bush is soldered to the basic body, wherein, between the pressure chamber and the solder region, a seal is provided which is formed by an at least essentially fluid-tight bearing contact of the expansion bush against the basic body. | 06-26-2014 |
| 279400020 | With measuring, indicating or control means | 3 |
| 20090072499 | System for centrifugal-force compensation in a hydraulic machining-chuck actuator - A machining apparatus has a chuck rotatable about an axis and having radially displaceable and angularly spaced jaws, a double-acting cylinder having a piston flanked by a pair of separate compartments and operatively connected to the jaws for radially shifting same. One of the compartments is pressurized with a working pressure pressing the jaws against a tool or workpiece and the other of the compartments with a counterpressure opposite to the working pressure. An instantaneous rotation speed of the chuck is detected, and a pressure differential between the working and counterpressures is varied in accordance with the detected instantaneous rotation speed. | 03-19-2009 |
| 20110068544 | MACHINE TOOL, IN PARTICULAR FOR RIM MACHINING - The present invention relates to a machine tool for machining of workpieces, having a workpiece support for mounting the workpiece, a tool holder, which can be moved at least along one axis, for holding a tool for machining the workpiece, and workpiece holding units for fixing the workpiece during the machining, the workpiece holding units being arranged outside the workpiece support surface of the workpiece support, which is covered by the workpiece in the mounted state, and each having a holding element for fixing the workpiece. In order that also workpieces of greater diameter can be machined, the machine tool otherwise being of the same dimensions, it is provided according to the invention that the holding elements can each be moved, substantially parallel to the workpiece support surface, in the direction of the workpiece, in particular in the direction of a central workpiece axis, which runs perpendicular to the workpiece support surface, for the purpose of centering and fixing the workpiece. The holding elements comprise a clamping surface that is arranged obliquely in relation to the workpiece support surface and that is, in the mounted state, pressed against the workpiece for fixing and centering the workpiece to be machined, thereby exerting a pressure both in the direction of the workpiece support surface and in the direction of the central workpiece axis. | 03-24-2011 |
| 20110121521 | TOOL TIGHT-CONTACT-STATE DETECTOR FOR MACHINE TOOL - Provided is a tool tight-contact-state detector for a machine tool which is capable of accurately and stably detecting whether or not a tool or a tool holder having the tool attached thereto is mounted to a main spindle in tight contact therewith. While rotation of a main spindle ( | 05-26-2011 |
| 279400030 | Jaw is expansible chamber; i.e., bladder type | 6 |
| 20130119618 | HYDRAULIC EXPANDING LOCK - The invention relates to a hydraulic expanding chuck ( | 05-16-2013 |
| 20140197607 | Holder Device - Provided is a holder device that uses a pressure medium suitable for gripping a long and thin grasped object, the device eliminating need for a small-diameter machining for a device body and allowing use of a material suitable for sleeve deformation at a portion where a pressure chamber is formed. A holder device capable of deforming in a radial direction for fastening a grasped object | 07-17-2014 |
| 20150336179 | PRE-STRESSING DAMPING SYSTEM - A tool holder having a tool receptacle for chucking a tool shaft by frictional engagement, in which the tool receptacle comprises a plurality of annular clamping surfaces spaced apart from one another, which are intended for retaining the tool shaft by nonpositive engagement and are embodied on the inner circumference of a tube part, and the tube part has a recess in the material for varying its clamping action; the recess in the material is embodied by a plurality of annular channels extending in the circumferential direction, which are each separated from the tool receptacle by a resilient wall portion, which on its side facing away from the channel embodies the respective clamping surface. | 11-26-2015 |
| 20150360296 | EXPANSION CHUCK - Expansion chuck ( | 12-17-2015 |
| 20160031015 | HYDRAULIC CHUCK - For enabling accurate and efficient cutting work on a narrow area, in a hydraulic chuck configured such that a pressurization fluid pressurized by a push member ( | 02-04-2016 |
| 20160193666 | TOOL HOLDER WITH BUILT-IN CAVITIES | 07-07-2016 |
| 279400040 | Pneumatic type | 7 |
| 20100096813 | CHUCKING END STRUCTURE OF HAND TOOLS - A chucking end structure of hand tools to enhance safety and overcome hard-maneuvering issues of the conventional structures. The invention includes a driving means to provide rotating energy and a chuck assembly to hold a cutter or a tool. The foregoing means and assembly are linked by a transmission shaft to transmit rotation. The transmission shaft is held in a holding hub which is engaged with a casing to house the driving means. The character of the invention is that a hollow shell to encase but not contact the chuck assembly. The transmission shaft comprises a first transmission shaft and a second transmission shaft which mortise with each other by a lug end and a notch end with a sloped side. The invention resolves problems of hard-maneuvering issues or hazards caused by inadvertently touching the rotating chuck assembly of the conventional hand tools. | 04-22-2010 |
| 20120126494 | PNEUMATIC CLAMPING CYLINDER - The invention relates to a pneumatic clamping cylinder ( | 05-24-2012 |
| 20130075983 | CHIPPING HAMMER CLAMPING STRUCTURE FOR A PNEUMATIC TOOL - A chipping hammer clamping structure for a pneumatic tool includes primarily a grip which is filled in with high-pressure air, an air cylinder which is connected with the grip, a braking unit which is at a front end of the air cylinder, an inner rim of which is a support part and which can move along the air cylinder, and a shield which is sheathed at a rear rim of the air cylinder and is combined with the grip. When in use, as the air cylinder is formed integrally, the chipping hammer can be more robust to increase a striking force. Besides, dust and particles produced in operation are discharged from the groove at the front rim of the shield, thereby avoiding contamination to an operator. | 03-28-2013 |
| 20140001711 | AIR PUMP ASSEMBLY FOR A POWER CHUCK | 01-02-2014 |
| 20140001712 | POWER OPERATED CHUCK | 01-02-2014 |
| 20140252725 | CLAMPING APPARATUS FOR CUTTING TOOL - A clamping apparatus includes a clamping member, a cylinder assembly and a transmission assembly. The cylinder assembly includes a cylinder, a sealing head and a limiting member. The sealing head defines a gas channel connected to the inner of the cylinder. The limiting member includes a limiting portion fixed to the cylinder, which includes an inner surface having a frustoconical shape. The clamping member is received in the limiting member, and includes a frustoconical shape clamping portion. The transmission assembly includes a piston shaft, a piston and an elastic member. The piston and the elastic member are both received in the cylinder. The elastic member is resisted between the piston and the limiting member. One end of the piston shaft away from the piston is connected to the clamping portion. The clamping member defines a clamp hole in middle. | 09-11-2014 |
| 20140252726 | CLAMPING CHUCK WITH INTEGRATED DRAWBAR - A clamping device for machine tools, comprising a chuck ( | 09-11-2014 |
| 279400050 | Jaws mounted on flexible member; i.e., diaphragm | 1 |
| 20160184956 | MACHINE TOOL WITH TOOL-ACCOMMODATING DEVICE - The invention relates to a machine tool, in particular a hand held machine tool, which has a tool-accommodating device which can be moved, in particular in oscillating fashion, about a drive axis, in order to retain a tool device on the machine tool. The tool-accommodating device has at least one clamping device, at least one retaining device and at least one locking device. The retaining device can be moved from at least one first, open position into at least one second, closed position. It is also the case that the retaining device can be forced by a clamping force, by way of the clamping device, preferably in the closing direction from said first, open position in the direction of said second, closed position. The locking device can be moved between at least one first, locking position and at least one second, unlocking position. It is possible here for said locking device to block movement of the retaining device in at least one locking position. A force applied to the locking device directly or indirectly by the tool device moves said locking device from one of said locking positions into one of said unlocking positions. This allows the tool device to be inserted particularly quickly and straightforwardly into the machine tool | 06-30-2016 |
| 279400060 | Socket type | 15 |
| 20110175300 | Hydraulic Expansion Chuck - The invention relates to a hydraulic expansion chuck having an end on the tool side; and an end on the machine side. A shaft is disposed on the end on the machine side for clamping the expansion chuck in a machine tool. An expanding bushing is disposed on the end on the tool side and surrounded by a pressure chamber and can be radially deformed for clamping a tool under the action of a pressure medium received in the pressure chamber. | 07-21-2011 |
| 20130106067 | TOOL HOLDER | 05-02-2013 |
| 20140001713 | GRIPPER WITH EMERGENCY RELEASE | 01-02-2014 |
| 20140145406 | HYDRAULIC EXPANSION CHUCK AND METHOD FOR PRODUCING SUCH AN EXPANSION CHUCK - A hydraulic expansion chuck includes a basic body, an expansion bush which is received in the basic body and defines a reception space for a tool to be clamped, and a pressure chamber which is delimited between the expansion bush and the basic body. A securing pin is provided, which extends through the basic body and the expansion bush into the reception space. A method for producing a hydraulic expansion chuck is disclosed. First, a basic body is provided with a blind hole, into which an internal thread is cut. Then, an expansion bush is soldered into the basic body. Finally, an orifice is made at the bottom of the blind hole and extends through the material of the expansion bush into a tool reception space which is delimited in the expansion bush. | 05-29-2014 |
| 20140232072 | CHUCK - A chuck for a power tool has a central receptacle, arranged in the body of the chuck, having a locating opening for axially inserting a shank-type tool. A reducing sleeve is arranged at least partly in the central receptacle, and a clamping device is provided for at least locally reducing the cross section of the central receptacle. A fixing device is provided which specifies a defined arrangement of the reducing sleeve in relation to the locating opening both with the chuck clamped and with the chuck unclamped. | 08-21-2014 |
| 20150028548 | TOOL HOLDER AND METHOD FOR PRODUCING A TOOL RECEIVING PORTION FOR SUCH A TOOL HOLDER - A tool holder with a main part, a deformable receiving portion for clamping a tool, and at least one blocking element which is designed to engage into a corresponding counter element on the tool in order to prevent the tool from moving axially out of the tool holder. The at least one blocking element is integrally formed with the receiving portion. A clamping system having such a tool holder and a method for producing a receiving portion for such a tool holder are also described. | 01-29-2015 |
| 20150115549 | MODULAR TOOL RETAINER - A modular tool retainer, comprising a main body extending along an axis of rotation and which is functionally divided into a shaft section for coupling to a machine tool spindle and a clamping section having a central accommodating bore for accommodating and clamping a cutting tool, which has a cutting head and at least one cutting edge, which is arranged concentrically to the main body and detachably fastened to the main body, and which is arranged at a predetermined axial and/or radial and/or angular position relative to the at least one cutting edge. The cutting head has a sleeve section, which extends the tool retainer and has a central accommodating bore arranged concentric to the central passage bore of the clamping section for accommodating and radially supporting a tool shaft part of the cutting tool protruding from the central accommodating bore of the clamping section. | 04-30-2015 |
| 20150306676 | HYDRAULIC EXPANSION CHUCK - The invention relates to a hydraulic expansion chuck having an end on the tool side; and an end on the machine side. A shaft is disposed on the end on the machine side for clamping the expansion chuck in a machine tool. An expanding bushing is disposed on the end on the tool side and surrounded by a pressure chamber and can be radially deformed for clamping a tool under the action of a pressure medium received in the pressure chamber. | 10-29-2015 |
| 20150306677 | COUPLING DEVICE OF JIG - A coupling device of jigs includes a foundation, a tube, a plurality of balls, and a piston base. The foundation has a chamber, in which a part of the tube is inserted. The tube has a plurality of through holes for housing the balls. The piston base is received in the chamber, and fitted to the tube. An inner surface of the piston base has a circular groove and an abutment surface. The piston base can be moved along an axial direction of the tube between a first position and a second position. When at the first position, a part of each ball is inside the circular groove; when at the second position, an area where the abutment surface abuts against each ball is not merely a single point. Whereby, the force applied on the abutment surface is dispersed, and therefore the processing accuracy of workpieces is ensured. | 10-29-2015 |
| 279400070 | Collet | 6 |
| 20130001896 | TOOL HOLDER FOR A CUTTING TOOL AND SLEEVE FOR A TOOL HOLDER - A tool holder for a cutting tool having a tool shank includes a receptacle which extends in an axial direction and a sleeve disposed in the receptacle. The sleeve includes a tool receptacle structured to at least partially receive the tool shank and a blocking element that projects radially into the tool receptacle. The axial positioning of the sleeve is adjustable with respect to the receptacle. | 01-03-2013 |
| 20140210168 | CHUCK DEVICE HAVING TWO COLLETS - A chuck device includes front and rear collets, a driving ring, and a driving sleeve. The driving ring and the driving sleeve can be driven hydraulically to move toward or away from each other. When the driving ring and the driving sleeve are moved hydraulically away from each other, each of the front and rear collets is moved to a release position, when the driving ring and the driving sleeve are moved hydraulically toward each other, each of the front and rear collets is moved to a clamping position. | 07-31-2014 |
| 20140353931 | HYDRAULIC CHUCK WITH A REDUCTION SLEEVE - A hydraulic expansion chuck for receiving a tool includes a chuck body, an expansion bushing which is received in the chuck body and defines a chuck opening, a pressure chamber which is interposed between the expansion bushing and the chuck body, and a reduction sleeve. The reduction sleeve is received in the chuck opening of the expansion bushing and defines a tool holder receptacle for receiving the tool to be chucked. The reduction sleeve includes a connector element configured to releasably attach the reduction sleeve to the chuck body. The reduction sleeve also may include an adjustment element configured to adjust the axial position of the tool in the tool holder receptacle. | 12-04-2014 |
| 279400080 | Fixed cam and moving jaws | 1 |
| 20090278323 | DEVICE USABLE AS GRIPPER HEAD OR CHUCK - A device for clamping a stem has a body forming a piston chamber and having an axially outwardly open hole adapted to receive the stem and a plurality of collet jaws in the hole shiftable axially by a piston between an outer releasing position with its axial outer ends radially spread and an inner holding position with the ends more closely radially juxtaposed. The stem is engageable axially in the hole between the jaws and lockable in the body in the inner holding position. A main spring urges the piston and jaws axially inward into the inner position. A cover element has an outer head and is axially shiftable relative to the piston between an extended position with the head engaged radially between the outer ends of the jaws and a retracted position with the head spaced axially inward from the outer ends of the jaws. | 11-12-2009 |
| 279400090 | Moving cam and fixed jaws | 2 |
| 20100171275 | Collet with multiple keys way - The present invention collet is provided with multiple Keys way for quick select key way, balancing and reduced Vibration of the conventional machines or CNC lathes spindle At high RPM (revolution per minute). | 07-08-2010 |
| 20130147131 | Rotary Stage With Integrated Collet Closer Assembly - A rotary stage having an integrated collet closure assembly includes: an actuating piston positioned in a piston housing; a drawbar configured to be moved axially depending on the position of the actuating piston to open and close the collet closure assembly, and rotationally by movement of a rotating shaft of the rotary stage; and a pair of thrust bearings provided between the actuating piston and the drawbar. The pair of thrust bearings acts as an interface between the actuating piston and the drawbar such that the drawbar rotates freely and the actuating piston and the piston housing remain stationary in a rotary direction. | 06-13-2013 |
| 279400100 | Radially reciprocating jaws | 6 |
| 279400110 | Fluid pressure directly moves jaws | 1 |
| 20120013080 | Hydraulic Chuck Assembly - A hydraulic chuck assembly for a tool machine includes first and second valve units disposed to control flow of pressurized fluids into a cylindrical chamber so as to move an annular piston to thereby move a taper socket along a spindle axis. Each valve unit includes a ball movable along a valve axis radial to the spindle axis such that the ball can be further forced to abut firmly against a valve seat during a high-speed rotation. Oil leakage can be prevented to ensure firm engagement of a workpiece with a collet head. | 01-19-2012 |
| 279400120 | Fluid pressure moves jaws via mechanical connection | 5 |
| 20080224423 | Method for Operating an Actuation Unit and Device for Carr - The invention relates to a method for operating an actuation device ( | 09-18-2008 |
| 20110210523 | CHUCK FOR HOLDING PRECISION COMPONENTS - The disclosure provides a chuck assembly for precisely holding a workpiece, such as a tool or part. The chuck assembly includes a piston mounted for movement and a set of jaws mounted for pivotal movement. Movement of the piston causes pivotal movement of the set of jaws. | 09-01-2011 |
| 20150042049 | CHUCK - A chuck comprising a chuck body having on one end two guide grooves extending in radial directions, a clamping jaw in each guide groove, a wedge rod drivingly connected with a clamping jaw, the wedge rod being movably mounted in the chuck body, and an actuation piston arranged centrally in the chuck body and in a driving connection with the wedge rods, to provide automatic and independent lubrication of the clamping jaw and the guide groove during each advance movement of the clamping jaws. | 02-12-2015 |
| 20150352642 | Compensating Chuck - A compensating chuck for concentrically clamping workpieces. The chuck has a drive unit having two pairs of entrainment members, wherein the entrainment members are preferably slidingly mounted, are respectively movable in paired relationship, and are so coupled to a respective one of the main jaws that a relative movement of a respective pair causes a synchronous movement of adjacent main jaws and that both a relative movement relative to each other with respectively different movement components and also a synchronous movement of the adjacent entrainment members in the same direction respectively causes a relative movement of adjacent main jaws. | 12-10-2015 |
| 20160001376 | INDEXING CHUCK - The invention relates to an indexing chuck ( | 01-07-2016 |
