Abstract: In the internal milling machine according to the invention for milling a work piece that rotates during machining with an annular internal milling cutter (5) on the one hand side the Z slide (4a, b) of each tool support (3a, b) includes a pass through opening and on the other hand side the transversal slide (7) supporting the internal milling cutter (5) is move able in the X-direction, the running direction of the mounting surface (1a) of the bed (1) wherein the mounting surface slopes downward in a forward direction. Based on this general configuration and in particular the arrangement of the Z-slides (6a, b) for the at least one tool support (3a, b) outside of the Z-supports (16a, b) for the opposite spindle stock (2?) yields advantageous centers of gravity in particular of the move able components and a high level of stability of the machine and therefore high level of machining precision of the machine.

Abstract: A broaching apparatus (200, 400) includes; a broach (300, 600) having a cross-section corresponding to a geometry of slot (115) between adjacent steeples (110) of a turbine rotor (100), and a mechanism (210, 220, 230, 410, 420, 430) which moves the broach (300,600) through the slot (115) in a direction substantially parallel to a direction of extension of the slot (115).

Abstract: The present invention provides a multi fiber optical ferrule, a tool for forming the ferrule, and a method of making the ferrule. The multi fiber optical ferrule is formed of two ferrule halves which are either molded or cast as imprecise blanks which are machined using a broach in order to precisely cut inner surfaces thereof for receiving an array of fibers. The inner surfaces of a pair of ferrule halves are cut simultaneously in order to assure accuracy in the fiber receiving and pin receiving channels. The halves are joined together with a fiber array placed therebetween to form the ferrule.

Abstract: A linear broaching machine for machining rotating parts wherein a plurality of tooling carriages are mounted upon a moving chain and broach type tools are supported by the carriages wherein the tools are moved in a linear path into engagement with a rotating workpiece to remove metal from the workpiece and form an accurately sized cylindrical surface concentric to the workpiece axis of rotation. The tool carriages are spaced from each other providing non-machining access durations wherein the workpiece may be loaded or unloaded from its rotating support spindles.

Abstract: A linear broaching machine for machining rotating parts wherein a plurality of tooling carriages are mounted upon a moving chain and broach type tools are supported by the carriages wherein the tools are moved in a linear path into engagement with a rotating workpiece to remove metal from the workpiece and form an accurately sized cylindrical surface concentric to the workpiece axis of rotation. The tool carriages are spaced from each other providing non-machining access durations wherein the workpiece may be loaded or unloaded from its rotating support spindles.

Abstract: A blind spline broaching machine for machining splines as well as sprockets, keyways, gears, cams and contours on workpieces, such as shafts. The blind spline broaching machine of the preferred embodiment has dual rams reciprocable relative to a rotary dial. The rams hold a corresponding pair of workpieces, while the rotary dial supports one or more broaching tools. The rotary dial is rotatable to index the workpieces to and from the rams. The blind spline broaching machine also incorporates a part moving unit on its periphery, which enables the use of a single loading/unloading station at which workpieces are alternately loaded onto and unloaded from the rotary table. Because the workpieces are loaded and unloaded from the same location on the periphery of the blind spline broaching machine, the side of the blind spline broaching machine opposite the loading/unloading station remains open to permit ready access to the tooling and the interior structure of the blind spline broaching machine.

Abstract: Apparatus for broaching a cylindrical surface of a workpiece, in which at ast one broaching tool is mounted on a tool carrier rotatable about its axis and about the axis of the cylindrical surface of the workpiece clamped in a stationary position. The broaching tool is independently rotatable about its own axis, and the rotary motion of the tool is superimposed on the rotation of the carrier and consequently the revolving motion of the broaching tool. Since the workpiece is stationary during broaching, very high cutting speeds can be achieved. The broaching tool can be of small and lightweight construction so that it is especially suitable for an automatic tool change. In a preferred form, a plurality of broaching tools are utilized, the axes of which are spaced outwardly from and circumferentially about the axis of the workpiece.

Abstract: An apparatus is provided for machining a flat surface on a workpiece and comprises an annular frame on which an annular wheel is rotatably mounted around a predetermined axis of rotation. A plurality of circumferentially spaced cutting members are secured to one axial surface of the wheel and preferably these cutting members are broaching tools. At least one, and preferably a plurality of circumferentially spaced workpiece holding fixtures are also mounted to the frame so that each fixture is open to, spaced from and axially aligned with said axial surface of said wheel. Each fixture can hold one workpiece with the surface to be machined adjacent the axial surface of the wheel with the cutting members. The wheel is continuously rotatably driven by a suitable motor at a high rotational speed, i.e. in excess of 200 surface feet/minute, while a feed unit associated with each fixture selectively axially moves its fixture with its workpiece towards the wheel, i.e.

Abstract: A gear cutting machine is provided with an endless chain for carrying a plurality of tools into contact with one or more workpieces to thereby form gear tooth configurations on the workpieces. The endless chain is pressed into firm contact with a first series of rollers in the zone in which its tools make contact with a workpiece to thereby prevent unwanted deflections of the endless chain and its tools relative to the workpiece. A second series of rollers prevents side-to-side deflections of the endless chain in the work zone.

Abstract: An endless chain for carrying stock removal tools is provided with two sets of rollers for supporting and guiding the chain around a chain housing. One set of rollers functions to guide the chain through the work zone portion of its travel while the second set of rollers functions to guide the chain through non-work zone portions of its travel.

Abstract: A gear cutting machine is provided with an endless chain for carrying a plurality of tools into contact with one or more workpieces to thereby form gear tooth configurations on the workpieces. The endless chain is provided with tightening means for stiffening articulated links of the chain as it passs through a zone in which its tools make contact with a workpiece, thereby providing a rigid series of links in the work zone.

Abstract: A clamping means is provided between a movable housing and a fixed structure of an endless chain machine for reducing deflections between cutting tools carried by the movable housing and a workpiece carried by a separate housing of the machine.