Abstract: A bar stock guide arrangement for screw machines having a rotatably mounted fitting which has a horizontal opening for loosely passing the bar stock and guide rollers in the fitting at circumferentially spaced locations around the bar stock. The guide rollers are on roller supports which are radially slidable in the fitting and have rack teeth on their opposite sides. Weights are slidable radially in the fitting between the successive roller supports, and these weights have rack teeth on their opposite sides. Pinion gears are removably mounted in the fitting to engage the rack teeth on the roller supports and the weights so that centrifugal force on each weight produces an inward force on the neighboring roller support. Springs bias the weights radially outward.

Abstract: A ballnose end mill with identical on-edge convex inserts is capable of drilling and milling, and apportioning the major milling load between the inserts.

Abstract: An apparatus for supporting a cutting insert is disclosed. A rotatable head includes at least one peripheral slot which has a generally flat bottom and a pair of parallel sides. The parallel sides of the slot are tilted relative to the bottom so that the bottom of the slot forms an acute corner with one side and an obtuse corner with the other side. An insert seat is provided which has a bottom and a back side which meet at an acute angle conformed to the acute corner of the slot. The seat has a front side with a recess to support the cutting insert in a general radial posture relative to the rotatable head. The seat is secured to the slot with the back side of the seat flush with the side of the slot forming the acute corner. The location of the bottom of the seat relative to the bottom of the slot is adjustable. A wedge is forced between the insert and the side of the slot forming the obtuse corner to confine the insert between the wedge and the seat.

Abstract: A form broaching assembly made up of a base block with an elongate recess to receive the root end of a series of broaching teeth, a plurality of hold-down blocks interengaged with the teeth, and wedge blocks acting on the hold-down blocks to insure an accurate alignment of the broaching teeth. The individual teeth may be manufactured with a true form relief as distinguished from a one-piece tool where this relief cannot be readily and successfully achieved.

Abstract: Multispindle-automatic turret lathe with a spindle support mounted for rotation about a central indexing axis on a headstock and in which are mounted several workspindles, and with a main driving motor for a drive shaft which is adapted to be drivingly coupled with that workspindle which at any given time occupies the working position.Since it is regular custom to provide such main driving motors with electronic control units which not only control acceleration and deceleration of the workspindle which happens to be driven at any given time but which also allow the latter being stopped precisely in a clearly predefined angular position, a separate drive for the spindle support may be dispensed with by coupling the spindle support with the main driving motor for its intermittent indexing rotation movement.

Abstract: An end milling tool having an elongate body which has two flutes defining two elongate lands extending generally in an axial direction of the body. The two lands have first and second flute surface each facing in a direction of rotation of the end mill. The end mill carries at least two peripheral-cutting inserts for peripheral milling, an inner drilling insert for cutting a radially inward portion of a hole, and an outer drilling inserts for cutting a radially outward portion of the hole, each insert being replaceable and of a generally flat configuration having a back face held in contact with the appropriate surface of the body, and a front face opposite to the back face and including a cutting edge. The peripheral-cutting inserts are disposed in a staggered manner alternately in the first and second flute surfaces, such that the first flute surface carries the peripheral-cutting insert which is nearest to the end face of the body.

Abstract: An apparatus and method are disclosed for reducing the oxygen concentration at the interface between a cutting tool and a relatively rotating metal workpiece. The apparatus comprises (a) a supporting means for holding the cutting tool in a predetermined position relative to the workpiece, and (b) means effective to direct a plurality of discrete flows of inert gas between the cutting tool and workpiece in a manner to substantially reduce the oxygen concentration in the zone to a predetermined level. The method comprises (a) directing a first stream of inert gas closely adjacent the interface, and (b) directing a second stream of inert gas to at least partially surround the first stream.

Abstract: A cutting insert is provided with a core having upper and lower surfaces and a recess in the upper surface. Crystal portions containing a dispersion of super-hard crystals are disposed at predetermined locations on the periphery of the upper surface of the core outside of the recess, and a layer of metal is bonded to the upper surface of the core inside the recess. The layer of metal extends upwardly beyond the upper surface. The layer of metal is provided to produce highly parallel upper and lower surfaces of the cutting insert in order to facilitate the mounting of the insert into a cutting body. The layer of metal further functions to absorb shock during a cutting operation.

Abstract: High-precision turning of a metal mirror is accomplished by causing a measuring beam to be reflected on a freshly turned area of the reflecting surface to be formed in a metal blank being turned to produce a metal mirror and, at the same time, causing reference beams to be reflected on areas turned prior to the aforementioned freshly turned area, measuring the positions of incidence of the resultant reflected beams on a position detection device thereby performing the Hartmann test on the aforementioned turned areas of the reflecting surface and, based on the results of the measurement, controlling the nose position of the cutting tool now being used in turning the reflecting surface.

Abstract: A chip breaker arrangement in cutting tool inserts comprising chip breaking grooves that vary in width, depth and/or distance from the cutting edge cyclically, with the variations occurring at either fixed or varying frequencies while the cutting edges are formed in a straight line along the varying chip breaking grooves whereby the same inserts provide effective chip control over a wide range of cutting conditions.

Abstract: A rotary cutting tool of the type comprising an elongated cylindrical body having a central axis about which it is rotated for performing cutting or material removal operations during relative movement in directions perpendicular to its axis of rotation. The body includes a shank end portion and a cutting end portion. The cutting end portion includes a plurality of generally continuous cutting edges lying at a uniform radial distance from the axis and extending in generally parallel helical paths about the body. Each of the cutting edges is preferably of generally sinusoidal configuration along its respective helical path with spaced portions of each edge having alternating positive and negative radial rake.

Abstract: Tool systems using replaceable cutting inserts and the insert for use in the systems wherein the tool holders have wedge shaped recesses for holding the inserts which are also wedge shaped and have shoulder means thereon that maintains the distance the cutting edge of the insert extends from the holder predetermined during operation of the system.

Abstract: To prevent withdrawal of a sheet adjacent a moving folding blade in a folding blade-type folding apparatus in which a folding blade is carried by a folding blade cylinder, the blade projecting against a plurality of superposed sheets to press them against folding grippers in a folding gripper cylinder, the outermost sheets are pre-punched with windows placed along the fold lines, and the folding gripper cylinder is formed with projecting grippers which extend through the notches formed upon folding to grip the innermost sheet and prevent inadvertent withdrawal thereof upon withdrawal of the folding blade from the notch in the folding gripper cylinder.

Abstract: A rod-supply arrangement is described, comprising a guide tube containing oil and mounted in a support and a feed rod movable axially in the guide tube and coupled to a feed drive, the forward end of the feed rod carrying a rotatable coupling element, and also with an oil-supply pipe and an oil-return pipe. In order to obtain such an arrangement which requires little space and has a substantially simplified charging of the guide tube with always a new rod of material, in connection with which the stocking of the rods of material is not restricted to a prescribed number of existing guide tubes, provision is made for the guide tube to consist of a guide channel formed in the support and coupled with at least one oil-supply pipe and of an upwardly swingable cover extending throughout the length of the guide channel, oil being supplied through the oil-supply pipe during the feeding of the material rod in the closed guide tube of the guide channel.

Abstract: An apparatus for trimming a scrap ring from a cylindrical container body and its method of operation. A cylindrical container body, closed at one end and provided with a flange member which extends substantially at right angles to the body at the opposite open end, has a scrap ring trimmed from the flange member. The container body is fed into one of a series of hemispherical pockets of a rotary turret and is then moved laterally thereto with the aid of a vacuum holder that engages the closed end. The open end of a container is presented to a main disk cutter that rotates about its axis continuously and which travels in alignment with one of the hemispherical pockets. A frusto-conical ram is mounted on the main disk cutter and is inserted into the open end of the container to insure its roundness. An auxiliary disk cutter, whose axis is substantially at right angles to the main disk cutter, is mounted on a reciprocable bar member along with a stripper plate.

Abstract: Width and thickness of a hot-rolled and descaled strip are controlled by performing, in a line in which the strip runs, a rough control step for reducing correction of the width and the thickness of the strip in only the longitudinal ends thereof and a fine control step for reducing correction of the width and the thickness of the strip over the entire length thereof, respectively at least one time, so that the desired width and thickness of the strip are obtained in the last reduction.

Abstract: A crankpin rolling apparatus is provided wherein plural pairs of upper and lower arms are pivotably carried by respective hinge pins extending in parallel relation with the rotational axis of a workpiece support device. A pair of upper and lower roller holders each rotatably carrying burnishing rollers are respectively mounted on each pair of the upper and lower arms. When the plural pairs of upper and lower arms are closed by respective pressuring actuators, the pair of upper and lower roller holders arrest a corresponding one of crankpins of a crankshaft on the workpiece support means and pressure the burnishing rollers upon fillets formed on the corresponding one of crankpins. The hinge pins are respectively carried by a plurality of rocking members, which are independently pivotable about a support shaft held by a machine frame in parallel relation with the rotational axis of workpiece support device.

Abstract: The invention relates to a tool holder for cutting tools in which the tool (5) by means of V-shaped upper and lower faces (6, 13) is clamped in V-shaped recesses of a support (1) and an upper clamp (8) of a carrier (4) said tool (5) and upper clamp (8) having the axis of their V-shaped faces at an angle to the other V-shaped faces such that the tool is pressed axially against an abutment (18), the clamping of the tool being close to its cutting edge (15) and the lower support (1) and the upper clamp (8) may have a thickness smaller than the width of the cutting edge (15).

Abstract: A system for, and a method of, replicating the known (i.e., ascertained) operational coolant fluid flow local pressure in an optical surface (such as a mirror surface) of the heat exchanger portion of a fluid cooled cylindrical optic. The system essentially comprises a precision numerically controlled lathe having a selectively rotatable spindle on which is mounted, with a hollow adapter, the cylindrical optic in which is retained a fluid connector that is in communication with the adapter which, in turn, is in communication with a source of pressurized fluid containing a fluid whose rate of flow and pressure can be regulated.

Abstract: An apparatus for cutting metallic tubing into predetermined lengths has a stationary supporting frame on which is mounted a feeding mechanism for moving a straight length of tubing unidirectionally intermittently along a straight path in alignment with the longitudinal axis of the tubing. A cutoff device driven by a motor having a hollow shaft for receiving the tubing is also mounted on the frame. The feeding mechanism is in two sections each being individually reciprocable but controlled to operate oppositely and alternately to feed tubing in predetermined lengths to the cutoff device. The cutoff device is operated to cut off the tubing while it is stationary between feeding movements of the feeding mechanism.