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| Number | Title | Issue Date |
| 7347807 | Machine tool and method for changing tools on this machine tool In the case of a machine tool which comprises at least one working spindle with a tool-holding fixture for tool holders carrying tools, and a tool changer with a gripper for the tool holders in order to transfer the tool holders between their magazine position, whic... | 03/25/2008 |
| 6953198 | Short pull-back chuck The present invention relates to a chuck for gripping workpieces having an outer chuck body rotatable about a chuck axis and defining a cavity. The chuck includes a collar, coupled to the outer chuck body, having a slot with a slot axis angled relative to said chuck... | 10/11/2005 |
| 6883407 | Expanding collet assembly for pick-off spindle An expanding, inner diameter gripping collet assembly for a pick-off spindle. An arbor base is connected to the pick-off spindle and is moveably connected to a moveable arbor. The moveable arbor engages and is driven by the pick-off spindle nose. The moveable arbor ... | 04/26/2005 |
| 6494401 | Arbor for securing reels on a shaft An arbor for temporarily securing a reel to the shaft of a machine such as an unwind machine. A plurality of blades are extendable and retractable from a cylindrical body by means of an axially shiftable cam assembly. The cam assembly shifts in response t... | 12/17/2002 |
| 6149357 | Apparatus for securing workholding equipment to a machine tool An assembly positionable on the spindle of a machine tool for securing a workholding apparatus in position on the machine tool. The assembly comprises first and second end portions and an inner piston axially movable within an inner chamber formed by the ... | 11/21/2000 |
| 5870935 | Self-locking clamping apparatus for coupling a tool unit to a tool supporter A self-locking clamping apparatus is provided for coupling a tool unit to a tool supporter. The clamping apparatus includes a pair of locking spheres, a canister member that is matable with the tool unit and which includes a pair of opposing apertures for... | 02/16/1999 |
| 5820069 | Expanding cone for securing reels An expanding cone for securing to a reel includes an inner funnel shaped core with a wide end at a base attachable to a support shaft and tapering outwardly from the base. An enclosing body around the core having a plurality of windows. A respective blade... | 10/13/1998 |
| 5771807 | Reusable mandrel for use in a printing press A reusable mandrel for use in a plate cylinder of a printing press. The reusable mandrel includes two semi-cylindrical shells spaced slightly apart to form a tube having two opposing longitudinal slots. Disposed inside the tube is a controller that may be... | 06/30/1998 |
| 5683212 | Clamping assembly for tapered hollow shank of tooling system A clamping assembly for a tapered hollow shank of a rotary cutting tool provides for ease of access to a tapered recess of the adaptor. The clamping assembly is designed for retention on the tool shank so that the adaptor recess remains open for cleaning ... | 11/04/1997 |
| 5391027 | Machine tool system A machine tool system includes a clamping unit installable on the head of a cutting machine, and a tool holder insertable into the clamping unit. The clamping unit includes an annular guide member and a sleeve telescoped onto the guide member. A flat driv... | 02/21/1995 |
| 5263351 | Locking wedge assembly for two-piece mechanically connected mandrels A two-piece, mechanically connected mandrel assembly in which a locking wedge assembly serves to secure a tapered socket connection. The wedge assembly includes two long wedge segments, two short wedge segments, a bolt connecting the short wedge segments ... | 11/23/1993 |
| 5102152 | Chuck A chuck for clamping workpieces or tools is provided. The chuck has a chuck body and at least two clamping jaws are radially displaceably guided in the chuck body and are operable, via wedge surfaces, by a driven chuck piston that is axially displaceable.... | 04/07/1992 |
| 5066175 | Cutting tool assembly A cutting tool assembly is disclosed as having a cutting blade of U-shape and a holder with flexible arms which may be expanded to grip the cutting blade.... | 11/19/1991 |
| 5022665 | Workpiece support tool An improved workpiece support tool is disclosed for use with a variety of workpieces. The support tool provides precise support and positioning of the workpiece with respect to an operational centerline during the balancing operation. The support tool inc... | 06/11/1991 |
| 4863323 | Changing and chucking tool An apparatus to change and chuck a tool head incorporates a chucking system that is arranged in a recess in the drive spindle that chucks a tool-head shank that can be inserted into the accommodating opening. The chucking system incorporates a grip with a... | 09/05/1989 |
| 4819319 | Power chuck retainer for rotating spindle In the clamping device a clamping head rigidly attached to the rotating spindle is provided between the rotating spindle and the tool holder which has a plurality of adjustable clamping pieces for holding the tool holder on the clamping head. A clamping r... | 04/11/1989 |
| 4784542 | Tool-mounting assembly having an exchangeable tool head A tool-mounting assembly includes a tool head having a receiving bore and a basic tool holder having a receiving pin that is shaped for insertion into the bore. The bore has a groove with a sloping surface and the receiving pin includes movably mounted cl... | 11/15/1988 |
| 4741473 | Expandable structure An expandable structure includes a hollow tubular frame having radially outwardly extending portions which define two longitudinally spaced-apart annular channels. Two segmented cylinders are respectively disposed in the channels, each cylinder comprising... | 05/03/1988 |
| 4740122 | Rapid-release chuck In a rapid release chucking device, particularly for drills, including a machine spindle (1) and a tool head (2) attached thereto in a manner secure against rotation, wedge faces (9) are provided at the circumference of a spreadable ring element (14). In ... | 04/26/1988 |
| 4730779 | Expanding mandrel assembly for a web-coiling core An expanding mandrel for clamping a tubular member, especially a tubular core on which a paper web can be coiled in a machine for coiling the web or for supplying the web from a coil, has a pin with flat surfaces against which bracing elements support ang... | 03/15/1988 |
| 4723877 | Toolholder The invention relates to a toolholder for holding a tool at one end and having a tubular shank at its other end for mounting it into the bore of a support member. The shank has at least two circumferentially spaced perforations in its tubular wall. Each o... | 02/09/1988 |
| 4712720 | Device for mutually centering and clamping two pipe bodies to be welded to one another Device for mutually centering and clamping two pipepieces which are to be welded to one another, which device, for each of the workpieces (50, 51), has a clamping unit on both sides of a welding area (9) provided with an inert gas supply (27). Each clampi... | 12/15/1987 |
| 4711406 | Coreholder A coreholder for securely holding web cores and the like for winding or unwinding includes a cylindrical body surrounded by an expandable sleeve for receiving a core with the sleeve extending within the central opening of the core. Grooves along the body ... | 12/08/1987 |
| 4677792 | Clamping or chucking system for a grinding wheel or disk A radially expansible thin-walled expansion sleeve (13) is expansible under hydraulic pressure by pressing a piston element (17) against hydraulic fluid in a chamber, upon operation of a threaded bolt (18) in a threaded bore (19) in the spindle (11) or an... | 07/07/1987 |
| 4648736 | Releasable coupler, particularly for gripper rails in a transfer press A releasable coupling for connecting a first and a second component to one another, includes a first sleeve-like hollow member affixed to an end of the first component and a second sleeve-like hollow member affixed to an end of the second component, an ex... | 03/10/1987 |
| 4602797 | Tandem chuck A chuck for gripping long hollow workpieces has two independent sets of jaws actuated to the work-gripping and releasing positions by two independent puller plates. The puller plates are spring biased to shift the jaws to the work-gripping position. A sin... | 07/29/1986 |
| 4572047 | Quick change slitter wheel holder A quick-release mounting for a cutting wheel comprises a housing adjustably mounted in an arm, and a hollow shaft rotatably supported in the housing. The shaft has an expandable collet hub on which a wheel can be received. A mandrel extends within the sha... | 02/25/1986 |
| 4571129 | Mandrel assembly An apparatus and method is provided for an air bearing support of a rotatable tooling bar, such as a boring bar. One or two mandrels may be provided for this tooling bar to form a complete mandrel assembly with the tooling bar. An air pressure expansible ... | 02/18/1986 |
| 4505313 | Cylindrical wedge A cylindrical wedge for holding a tool head on a wooden tool handle has a tapered exterior surface and a central bore containing a throat section that is dimensionally smaller than the openings at either end of the bore. When the wedge is embedded in a wo... | 03/19/1985 |
| 4497498 | Expanding-contracting gripping device for workpiece A device for releasably gripping a workpiece includes first and second axially elongated, cylindrical gripping sleeves, the second sleeve being coaxially supported within the first sleeve for axial movement relative thereto. Each sleeve includes a plurali... | 02/05/1985 |
| 4466576 | Metering drum for filamentary material The metering drum for the weft thread of a weaving machine has a circumferential surface of rubber which is clamped between two supporting rings. The supporting rings may be movable axially or rotatably relative to each other so as to expand or constrict,... | 08/21/1984 |
| 4465244 | Expanding core chuck For use in a papermaking machine or paper converting mechanism having an arrangement for winding a roll of paper onto a core at high speed, an expanding core chuck for insertion into a roll core which includes a spindle mounted for rotation within a housi... | 08/14/1984 |
| 4432506 | Reel and hub lock for tape drives A mechanism for centering and locking a tape reel or a tape hub on a drive shaft in a tape drive. A mechanism which can be actuated manually to lock a reel or hub in place and to unlock the reel or hub and also which will automatically lock the reel or hu... | 02/21/1984 |
| 4427317 | Expandable camlock A camlock for engaging the inside of tubular members thus suspending apparatus from the tubular members comprises a movable spacer disposed on a slidable member between two metal rings. The relative motion of the spacer and slidable member causes the meta... | 01/24/1984 |
| 4422653 | Chuck for tubular workpieces A chuck is provided with a cylindrical workpiece gripping element having a jacket and an article gripping member and a resilient rubber-like sleeve sandwiched between. The jacket and gripping member are partially segmented into longitudinal strips so that... | 12/27/1983 |
| 4418592 | Stopping fixture A stopping fixture for a hollow spindle of a headstock has two elements movable relative to one another in an axial direction of the spindle and insertable into the latter, whereas the elements have inclined surfaces so that when one of the elements is ax... | 12/06/1983 |
| 4403721 | Variable diameter drum A variable diameter drum for driving perhaps other drums which includes a rotating shaft, and a plurality of cylinder segments circumferentially arranged around the shaft. Each cylinder segment has an outer arc surface with the outer arc surfaces of all o... | 09/13/1983 |
| 4373411 | Expansible mandrel An expansible mandrel for loading and unloading a work member while the mandrel is rotating, comprises a frame having an abutment and a mandrel body slidable in the frame. Two slide members are mounted for radial movement within first recesses in the body... | 02/15/1983 |
| 4284251 | Bearing for supporting rolls of paper A bearing for supporting rolls of paper includes a pair of identical devices, each of which is formed of two telescopically coupled elements jointly forming an axially expandable cone. The free end of a first element has a flange to be connected to a memb... | 08/18/1981 |
| 4229127 | Boring bar A collapsible boring bar is disclosed having radially movable tool units on its outer periphery. The tool units are moved radially by an axially slidable ramp means that acts on cylindrically shaped rollers. The ramp means are located in grooves formed in... | 10/21/1980 |
