Class 409/233 - And draw bar

Subclass of Class 409 - Gear cutting, milling, or planing
Definition: Apparatus including means to fixedly secure the cutting
No. of patents: 342
Last issue date: 01/17/2012

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Number	Title	Issue Date
5678967	Apparatus for cutting a workpiece and including a kinematic tool coupling Apparatus for cutting a workpiece includes a rotatable cutting tool, a rotatable spindle for rotating the cutting tool, and a quick-connect and disconnect kinematic coupler for releasably coupling together the rotatable cutting tool and the rotatable spin...	10/21/1997
5662442	Tool clamping mechanism A tool clamping mechanism for clamping a tool using a thrust applied by a hydraulic/pneumatic cylinder as an actuator. This thrust is weaker than that of coned disc springs withstanding a force applied during a cutting operation or the like of the tool. C...	09/02/1997
5660510	Spindle device A spindle device in which a coolant passage 26, capable of being selectively connected to a main passage 17, is provided at downstream of the main passage 17, an air passage 32, capable of being selectively connected to the main passage 17, is provided ex...	08/26/1997
5639194	Spindle extension with self-contained draw bar A spindle extension, especially for drilling and milling operations is desirable to complete many modem die molds or to protect the host machine spindle from undesirable wear. The inventive spindle extension contains its own adjustable length draw bar ass...	06/17/1997
5636950	Spindle arrangement A spindle arrangement such as a machine tool spindle which rotates at high rotational speeds includes separate elements, which may be in the form of a counter-weight and a driving and positioning shoulder, that are mounted on the spindle nose. The separat...	06/10/1997
5632580	Milling machine extension A machine tool extension joins a machine tool to a spindle on a milling mine. The machine tool extension has an extension collar with a cavity therethrough and a mouth at either end for joining the collar to the milling machine and the machine tool. An e...	05/27/1997
5626448	Tool pulling force magnification mechanism of spindle An improved tool pulling force magnification mechanism for use in a spindle is disclosed. It comprises: (a) a draw bar contained in the hollow portion of the spindle shaft, the draw bar having a front end and a back relative to a tool to be pulled; (b) a ...	05/06/1997
5613929	Machine tool with bar-spindle and DIN standard toolholder changer In a vertical machining center, a spindle-drive sleeve is axially immovable in the machine frame, but rotates about its longitudinal axis to rotate a spindle mounted in the sleeve for rotation by the sleeve while axially slidable independent of the sleeve...	03/25/1997
5549427	Device for transferring a pressure medium The device for transferring a pressure medium has a stationary outer component with first pressure medium channels and an inner, rotatably drivable component inside the stationary outer component radially spaced at a distance from the stationary outer com...	08/27/1996
5509763	Coupling device for a workpiece or tool holder A coupling system between a tool system module, such as, for example, a tool receptacle, and a machine tool, such as, for example, a spindle. In order to provide for rapid initiation and release of the connection between these components while making larg...	04/23/1996
5489167	Chuck actuator with wedge-type locking A holder for a tool or workpiece has a tubular working spindle centered on and rotatable about an axis, an elongated pulling element axially displaceable in the spindle and having a front end provided with holder jaws and a rear end with a forwardly direc...	02/06/1996
5472299	Main shaft locating mechanism for change of tool A main shaft locating mechanism for change of tool, comprising a locating seat disposed with an eccentric, and a splined shaft disposed with a disk having an eccentric locating pin corresponding to the eccentric hole of the locating seat and adapted to ax...	12/05/1995
5447485	Method and apparatus for clamping a tool in a metal cutting machine An ultrasonic machining device 10 is attached to a movable carriage 3, and has a borehole 11 to whose free end a differential screw 14 is threaded. To clamp a tool 20, first the device is returned to a neutral position whereat a wrench 25, which is mounte...	09/05/1995
5443340	Coupling device between a workpiece holder or a tool holder and an arrangement for handling same A coupling system between a tool system module, such as, for example, a tool receptacle, and a machine tool, such as, for example, a spindle. In order to provide for rapid initiation and release of the connection between these components while making larg...	08/22/1995
5433562	Cutter quick change system The tool spindle has a drive plate on which a cutter is mounted. Drive keys on the drive plate engage slots in the cutter so that the cutter rotates with the drive plate. A clamp bar is provided to clamp the cutter against the drive plate. The cutter is f...	07/18/1995
5425606	Tool clamping and releasing device A tool clamping and releasing device comprises an axially movable tie rod and a shifting apparatus for the tie rod actuated by cup springs. The shifting apparatus comprises a sliding collar subject at one end to the action of the cup springs and which is ...	06/20/1995
5409322	Apparatus for holding tools An improved tool holding apparatus includes a collet chuck or a steel ball chuck that clamps a pull bolt, which defines the forward end portion of a tool, by resilient force applied thereto from a coned disc spring. The tool holding apparatus further incl...	04/25/1995
5403132	Quick replacement toolholder for milling machine A toolholder for securing a tool in the collet of a mill, the collet having a fluted open end wherein the toolholder is a pair of concentrically arranged cylinders, one cylinder inside the other and each having flutes. The inner cylinder has an axial bore...	04/04/1995
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
5372568	Machine tool with automatic tool changer, having mechanism for utilizing relative movements of tool and tool changing gripper to clamp and unclamp the tool A machine tool equipped with an automatic tool changing device, including a tool support having a clamping mechanism for holding a cutting tool, a tool transfer device having a tool gripper for transferring the tool to and from the tool support at a tool ...	12/13/1994
5354076	Chuck draw rod connector An assembly for releasably connecting the machine draw rod to a chuck draw rod both of which rotate about an axis, the assembly including a female member having a first end operatively attached to the machine draw rod member and defining a receptacle, the...	10/11/1994
5344263	High-precision interchangeable tool holder A quill is rotated in a spindle and carries a tool which is rotated with the quill about a common axis. The tool is held in a bore in the quill by a combination of a tool receiver, a drawbar and an attachment member which is shrunk fit to the tool. The ov...	09/06/1994
5342155	Spindle extension with self-contained pull-stud draw bar assembly A spindle extension, especially for drilling and milling operations is desirable to complete many modern die molds or to protect the host machine spindle from undesirable wear. The inventive spindle extension contains its own pull stud draw bar assembly t...	08/30/1994
5340248	Mechanical chuck with clamp for pulling tool shank to tightly clamped position A mechanical chuck for clamping the shank of a tool comprises a receiver having a forwardly open, rearwardly tapering socket. A pull rod is mounted for front-to-rear reciprocation in the socket. The pull rod is connectible to the tool shank. A plurality o...	08/23/1994
5327979	Coolant through spindle device A coolant through spindle device is disclosed, including a rotating joint member secured to the rear end of the spindle for conducting coolant into the spindle, the coolant being conducted through a separate coolant passage inside the spindle to the nozzl...	07/12/1994
5290136	Driving device for a milling machine A driving device for driving a head of a rod in a milling machine includes a board slidable up and down relative to the milling machine, a driving mechanism disposed on the board, a socket secured to the lower end of the driving mechanism and located abov...	03/01/1994
5279194	Ball lock assembly without a canister A ball lock assembly having a cutting head and a locking component including a lock rod carrying at least one locking member. A positioning assembly operatively connects to the lock rod so that one can move the lock rod between a locked position and an un...	01/18/1994
5244322	Clamping device for individual tools A clamping device for individual tools has a spindle and a pulling member nnected inside the spindle. The pulling member has a conical clamping and centering element projection from the spindle. A tool holder has an end face with a recess, the recess havi...	09/14/1993
5238341	Connection system for connecting an interchangeable tool head to a tool spindle A connection system for connecting an interchangeable tool head to the spindle of a numerically controlled machine includes radially displaceable wedge members which when actuated radially to an outer clamping position provide for a clamping connection be...	08/24/1993
5226869	Method and apparatus for changing the tool disk of a tool turret For changing the tool disk connected detachably and rotatably to the housing of a tool turret, a work-locating fixture is provided. The tool disk can be moved out of its work setting in which it is coupled with the drive shaft for rotation by a rotary dri...	07/13/1993
5201621	Shank for a tool A shank (10) for retaining a tool or touch probe in the socket (S) of a machine tool spindle comprises 6 areas of surface which, in use, bear against the wall of the socket (S). The areas of surface are provided by three balls (34) resiliently supported f...	04/13/1993
5193954	Universal tool connection A mechanism for clamping a cutting tool holder in a socket formed in an end face of a clamping unit in a cutting machine. An axially movable drawbar has a multiple number of flat surfaces obliquely angled to the drawbar axis for exerting cam forces on ind...	03/16/1993
5143495	Coupling system for machine tools A coupling system for selectively locking a tool to a toolholder, in which the locking mechanism carried by the toolholder has a cross-sectionally compact structure and provides release assist when the tool is being removed from the toolholder. The body o...	09/01/1992
5140739	Spindle unit and tool clamping device therein for machine tools A spindle unit comprising a solid shaft main spindle of a highly rigid material such as cemented carbide, with the main spindle being rotatably supported in a spindle head by bearings less apt to generate heat. A tool-clamping device including an adapter ...	08/25/1992
5118229	Apparatus for transmitting motion to an off-axis rotary driven tool An apparatus is provided for transmitting rotation about and translation along a first axis from a driver to a toolholder with a spindle along an axis non-parallel from the first axis. A shaft is rotatably mounted within a sleeve which is slidably mounted...	06/02/1992
5096347	Spring clamp with clamped condition holding device An actuation member (B) supported by a housing (A) is actuated for clamping upwardly by means of a spring force and actuated downwardly for unclamping by means of an actuation means (D). A piston (11) is inserted into a cylinder (10) fixedly secured to th...	03/17/1992
5095785	Self actuating generating tool A machine tool that includes a rotary spindle having a radially movable cutter element. An axially movable drawbar within the spindle is used to move the cutter element to its retracted or extended position. A harmonic drive unit is carried on the spindle...	03/17/1992
5078558	Low mass spindle and Z-axis unit A spindle and Z-axis unit comprises a spindle housing and a hollow rotor shaft rotatable and axially movable with respect to the spindle housing. The rotor shaft carries a collet at its lower end for chucking a machine tool such as a drill bit. The tool i...	01/07/1992
5070592	Spindle unit of a machine tool in which tools changing is available The present invention relates to a spindle unit of a machine tool in which tools changing is available and especially relates to a spindle unit by which a tool in a tool holder can be quickly and safely clamped and unclamped. This spindle unit is characte...	12/10/1991
5066178	Draw bar adapter structure for and method of securing a tool to a spindle Adapter structure for and method of securing a draw bar actuated tool to a spindle having an actuating draw bar extending therethrough. The structure includes coupling members for securing the adapter structure to the actuating draw bar and to the tool dr...	11/19/1991

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Class 409/233 - And draw bar