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Class 409/903 - WORK HOLDER


Subclass of Class 409 - Gear cutting, milling, or planing
Definition: Structure to be used with the apparatus of this class, which
No. of patents: 32
Last issue date: 04/25/2006


NumberTitleIssue Date
7035707System and method for securing workpieces to a worktable of a CNC machining system utilizing a low level vacuum source
A system and method for operating a machine whereby a workpiece is held on a worktable of the machine with a suction force. When the work piece has a surface area insufficient to receive a full cut from a tool mounted in a tool head of the machine, the machine autom...
04/25/2006
6783310Self-centering element
A self-centering element for clamping workpieces via deflecting pins, which act between a drive element and self-centering slides. Deflecting pins, which are provided with grooves in which carrier prisms are arranged, are introduced in pairs into recesses in a housi...
08/31/2004
6629355Machining method and machining system
A method of machining a plurality of workpieces in an unmanned manner, including the steps of holding, with a jig, a first one of the workpieces, attaching the jig holding the first workpiece, to a workpiece holding device of at least one machining device...
10/07/2003
6490806Cam shaft gear positioning system
A gear positioning system comprising a first and second gear retention member each has an exterior surface formed with a plurality of recesses. Each of the recesses is similarly configured essentially in the shape of a gear tooth with sidewalls there betw...
12/10/2002
5988960Holder for plurality of workpieces
A CNC machine tool has a plurality of collet chucks in a fixture that requires loading workpieces in these collets by hand. The workpieces are first assembled on a loading bar or holder so they can be collectively loaded in the ganged collet chuck for mac...
11/23/1999
5743685Clamping device for a workpiece processing machine
Disclosed herein is a clamping device comprising a workpiece-engaging portion including a workpiece-engaging surface; sealing means for sealing the workpiece-engaging portion with the workpiece; the sealing means including a first resilient member arrange...
04/28/1998
5730195Machining center for the machining of flat workpieces
An apparatus for machining workpieces includes a feed conveyor which has an alignment station and a discharge conveyor which adjoin a machining zone. Between the feed conveyor and the discharge conveyor, there is a transport device which is disposed at on...
03/24/1998
5647704Machining opposite surfaces of a workpiece to be parallel to one another
Parallelism between of two opposite surfaces of a workpiece is assured by referencing off of three features on the edge(s) of the workpiece, the three edge features establishing a single, unique plane within the workpiece for referencing the machining ope...
07/15/1997
5071101Mold for an intraocular/contact lens
A casting mold for use in the manufacture of intraocular/contact lenses. The casting mold comprises a base and a cup-like feature attached to the base. The base has a frusto-conical configuration defined by a first planar circular cross-sectional area tak...
12/10/1991
5002108Process for the edge planning of rectangular plates
A process for the edge-planing of the longitudinal and frontal edges of workpiece plates. A workpiece plate is advanced to a plate saw and at least one longitudinal edge is planed. The workpiece plate is then rotated and at least one frontal edge is plane...
03/26/1991
4949942Table exchanging device for wood working machine
A table exchanging device for a wood working machine wherein workpieces of wood can be individually attracted and fixed by a sucking action by vacuum and such sucking action can be maintained also while the slide tables are slidably moved. The device comp...
08/21/1990
4921378Rotary-pallet system
Rotary-pallet system, in particular for multi-directional machining of the pieces (8) to be machined. In the said system there is a body piece (2), one of whose ends (A) is attached to a holder, which said body piece is rotable around a longitudinal axis ...
05/01/1990
4850099Machine tool spindle actuated workpiece clamping system
A machining system includes at least one machine tool (10) having at least one powered spindle (12) and a plurality of tools (14A-14F) stored in a magazine (40) for automatic retrieval and return by the spindle (12). A portable fixture assembly (16A, 16B,...
07/25/1989
4789279System and apparatus for reboring main bearings
An engine block reboring system for main bearings in which the block is mounted on a pair of rails extending laterally on a workbed and is rebored by a tool driven by a right-angle drive extension on a vertical boring machine after the position of the blo...
12/06/1988
4688321Method for securing a workpiece to a fixture
A device for securing a workpiece to a fixture for performing machining operations includes a tubular, radially expansible mandrel. The mandrel is carried in a passage provided in the fixture and extends into a hole provided in the workpiece. An expander ...
08/25/1987
4650379Pin machining fixture
A pin machining fixture 10 has a plurality of openings 25 extending through a body having exterior surfaces 11-16 that lie accurately in three pairs of parallel planes that intersect perpendicularly. Each of the through openings 25 has a location notch 26...
03/17/1987
4645391Work set up method and apparatus
A work set up method and apparatus is disclosed for use with tape controlled machine tools including quick connect ball locks which accurately lock one or more fixtures and workpieces to a work table. The tape is indexed with one ball lock and controls th...
02/24/1987
4614469Multiple collet work-piece holder
A multiple collet work-piece holder having a block with a plurality of openings and a collet retainer disposed within the openings. The retainer has pistons which are subjected to hydraulic pressure for moving the collet to a clamping position. The opposi...
09/30/1986
4565476Internal hydraulic clamp
A device for securing a workpiece to a fixture for performing machining operations includes a tubular, radially expansible mandrel. The mandrel is carried in a passage provided in the fixture and extends into a hole provided in the workpiece. An expander ...
01/21/1986
4561814Mechanical tool manipulating method and apparatus
A mechanical tool manipulating method and apparatus including apparatus and process for splitting axes of drive, wherein the drive means include preloaded lead screw nuts for minimal backlash, and "v" wheels and cylindrical slides for lineal tracking, as ...
12/31/1985
4530627Pinless router
A pinless router comprising a router coupled to a movable support arranged and configured such that it has at least one separable portion which may be decoupled from the remainder of the support, a means for vertically moving the router and the support, a...
07/23/1985
4514122Pressure foot for machine tool
An improved pressure foot contact assembly comprising a small number of plastic parts provided to replace a more complex and expensive contact assembly employed in a prior art pressure foot for a routing machine. In the preferred embodiment, a slotted cyl...
04/30/1985
4453704Apparatus for retaining blanks in working machines
According to the present invention a plurality of blanks (2) to be surface machined in working machines are placed side by side and fixed in a frame (1), open at both sides, in such a way that the blanks (2) can be machined at least at two sides while the...
06/12/1984
4416570Precision work holder for machine tools
A work holder for precision positioning and movement of a workpiece (20) relative to a machine tool comprises a base (100), a pair of spaced stocks (200, 300) mounted on the base, a spindle assemblies (210, 310) supported on each of the stocks for rotatio...
11/22/1983
4382728Workpiece retaining pressure-foot assembly for orthogonally movable machine tool
In a numerically controlled, gantry-type routing machine, a workpiece pressure-foot assembly is disposed crosswise over an elongate workpiece supporting bed for providing an effective hold-down force for stacked workpiece sheets. The hold-down force is ap...
05/10/1983
4304512Machine tools
A machine for machining sheets comprises an arrangement for compressing the sheets to be machined. The arrangement is rotatable about a longitudinal axis comprises at least two rollers for bearing resiliently against the sheets during machining, each of w...
12/08/1981
4289305Work piece holder for woodworking machine
For use with a spindle molder or similar milling machine, there is provided a holder in which a plurality of work pieces can be mounted for movement in unison of each into engagement with the cutting tool by actuation of the holder. Provision is also made...
09/15/1981
4260307Work table for machine tools
A work table for machine tools such as pillar-type drills and the like comprising a substantially horizontal plate forming a work surface through which are cut a plurality of longitudinal or radially extending grooves. A flange depending from the peripher...
04/07/1981
4251174Roller hold down
A roller hold down is designed to restrain parts being cut from a stack of flat sheets. The roller hold down eliminates the need for secondary fastening means to restrain the parts during the cutting operation. The parts are restrained in position on a fl...
02/17/1981
4201376Adjustable clamp for V-block
An adjustable clamp for a V-block comprises an integral piece forming two legs, joined together at an acute angle and each having a free end. A first threaded hole is formed through said means on an axis at least approximately bisecting the acute angle. A...
05/06/1980
4158987Pressure foot for machine tool
This invention provides a frictional clamping arrangement for holding the workpiece being cut by a router so as to prevent movement of the cutout portion of the workpiece in the last increment of the cut. The device includes a pressure foot having a clamp...
06/26/1979
3990689Adjustable holder assembly for positioning a vacuum chuck
An adjustable holder assembly for positioning a vacuum chuck relative to a bed including a base plate having an integrally formed pivot mount for rotatably affixing the plate to a bed providing a first degree angular displacement θ1. A lower stage includ...
11/09/1976
 
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