Abstract: A holder for bar stock being fed to a turning machine includes bar stock holding V-shaped trough, and a top guide assembly mounted to a floor-mounted frame through frame-mounted slides that are vertically slidable on the frame in opposite directions. A horizontally-extending adjusting-cam rail is horizontally slidably mounted to the frame. It has inclined keys thereon received in keyways in horizontal cylinders mounted in the vertically movable slides so that, upon linear adjustment of the cam rail, the trough mounting slides and the guide mounting slides are vertically moved simultaneously but in opposite directions to adapt the apparatus to different sizes of stock, but without changing the location of the centerline of the stock to be fed to the turning machine. A handwheel operated screw adjusts the cam rail. A parallelogram linkage and operating handle provide for quick guiding control of new stock after loading into the trough from above the trough.

Abstract: In order to so improve a bar stock feeding means for machine tools comprising a longitudinal guide means on which several holders which each receive the bar stock in a guide means are held for movement in the longitudinal direction of the longitudinal guide means, and a drive means with which the holders are displaceable from an initial position in which they exhibit a maximum spacing from one another in the longitudinal direction into an end position on the machine tool side in which they exhibit a minimum spacing from one another in the longitudinal direction, that it can be sturdily and structurally simply made, it is proposed that the longitudinal guide means comprise a guide element having a longitudinal thread, that the holders be held in parallel alignment with one another by threaded rings engaging the longitudinal thread, and that the holders be movable in the longitudinal direction between the initial position and the end position by a relatively rotation between the guide element and the threaded r

Abstract: A spindle apparatus for holding a workpiece for machining includes a stationary support structure and preferably multiple rotary spindle members for holding individual workpieces. Each rotary spindle member is mounted in a spindle carriage that is rotatably mounted to the stationary support structure. As the spindle carriage is rotated on the support structure, the spindle members move in an orbital path. A rotary indexing apparatus is provided for rotatably driving the spindle members and the spindle carriage. The indexing apparatus is connected to a transmission including a fixed center gear as well as planetary gears and spindle member drive gears for each spindle member. A piston assembly received in each spindle member engages and holds a distal end of the workpiece and allows for the axial advancing of any selected incremental length of the workpiece through the rotary spindle member for machining.

Abstract: A multi spindle automatic lathe comprising a single motor (20) for rotating a plurality of spindles (55) which are freely rotatably supported on a spindle carrier (52) which is in turn supported on a headstock (51) for an indexing rotation so as to prevent a mutual spatial interference occuring between said motor (20) and an elongated member (W) during the processing of such elongated member (W), wherein said spindle carrier (52) has its rotary shaft arranged so as to be a common axis with the output shaft (21) of said motor (20), and wherein the lathe further comprises a means (56), (57) for transmitting the rotary output power of said motor (20) to each of said plurality of spindles, and through-holes (37) defined in the stator portion (29) of said motor (20) so as to be on a common axis with central holes of said plurality of spindles (55).

Abstract: In its simplest form, the automatic transmission machine under discussion, with electronically controllable intermittently rotating table (FIG. 1), is made up of an annular base support (1) consisting of two half-plates (1' and 1") on whose opposite external surface are fastened, on radial axes, operating units (6, 11, etc.) achieving a notable plurality of axes, and containing guide elements (2 and 4) of a ring (3) holding collet-holding table (24), achieving the extreme precision and rigidity of the table itself which is rapidly substitutable by another one with different functions or dimensions, making possible great versatility, being able to have collets (23) as fixed axes, orientable or dynamic and placed axially or radially or both.

Abstract: An eccentric boring tool and method of forming a bore off center from the central axis of a workpiece are disclosed. The tool includes a tool holder nonrotatably supported relative to a workpiece and an outer housing supported for rotation with the workpiece and rotation relative to the tool holder. An eccentric supported within the housing mounts a bearing which in turn supports the tool holder. The eccentric rotates with the housing causing the longitudinal axis of the tool holder to orbit about the longitudinal axis of the workpiece. An end mill cutting tool is supported in the tool holder. A plurality of discs are supported in the forward end of the housing. The discs engage the workpiece, lock the housing to the workpiece and cause the housing to rotate at the same speed as the workpiece.

Abstract: A multiple spindle automatic screw machine is provided with an electrically insulated metal stock feed stop which is connected in an electrical circuit so as to provide an electrical signal when the grounded bar stock makes contact therewith for indicating part count and stock presence.

Abstract: A spindle drive for a multi spindle lathe incorporating electrically operable clutch mechanisms to engage drive to the spindles, each clutch mechanism having a part fixed to the spindle to be driven, and electromagnetic means mounted in a ring secured to the spindle mounting drum and clutch plates actuated by the electromagnetic means.

Abstract: A spindle drive for an eight spindle lathe comprising a single input gear disposed at the center of the circle of the eight spindles, two gears meshing with the single input gear, each of these two gears engaging with pairs of further gears which are arranged to drive the work spindles.

Abstract: A method and apparatus for use on an automatic multispindle lathe of the type wherein the spindles are indexed into various positions about a central axis, the present method and apparatus including stopping rotation of the spindle and work piece in one of said positions, clamping the work piece, milling the work piece, releasing the clamping thereof, and indexing the lathe to bring another work piece into position.

Abstract: A bar holder and feeder for an automatic machine tool comprising an elongated bar holder aligned with the machine tool, which bar holder can be opened to allow bar to be loaded thereinto; loading means to load bar into a loaded position in the bar holder; and a bar feeder positioned between the elongated bar holder and the machine tool, through an open collet of which machine tool bar is to be fed from the bar holder, the bar feeder comprising a sleeve engageable over a bar to be fed at a position externally of the machine tool and feed means to cause axial movement of the sleeve, the sleeve having internal biased gripping means which permit the sleeve to be moved by the feed means over the bar in a direction away from the machine tool but prevent the sleeve being moved by the feed means over the bar in a direction towards the machine tool, whereby a reciprocation of the sleeve by the feed means causes the bar to be fed to the machine tool, and means to prevent movement of the bar from the loaded position in