Abstract: A dense cemented carbide product is described. The product is manufactured from WC with a grain size between 0.1 and 0.4 &mgr;m, fine grain size cobalt and ruthenium powders. The product is used in PCB machining operations where the addition of 10-25% Ru to the binder phase offers up to 25% wear resistant increases and up to 100% increase in chipping resistance in PCB routing compared to conventional materials (6% cobalt and 0.4 &mgr;m grain size).

Abstract: A device for towing a train of carriages of a sorting machine includes a pair of wheels driven by respective motors, which wheels engage a blade arranged below the carriages. Each towing wheel is movable toward and away from the blade relative to its respective motor, whereby the inertia of the member that has to be moved in response to a misalignment of the blade is low.

Abstract: A drill bit assembly includes a drill bit having a leading end to which a drill tip is bonded. The drill tip has a front cutting edge, a pair of side cutting edges, a rear end and a pair of parallel side walls extending between the respective edges. The leading end is arranged to support the drill tip along the rear end and against the parallel side walls. The drill bit includes a bore extending axially therethrough and opening into the leading end. The drill tip extends across the bore but permits egress of flushing liquid from the bore. The drill tip includes projections arranged to cooperate with an engagement face formed at the leading end to locate the drill tip in a bonding position relative to the leading end prior to bonding of the drill tip to the leading end. The cooperation is such as to resist shifting movement of the drill tip in a direction of elongation of the tip and out of the bonding position.

Abstract: A threading tap for cutting threads in blind holes includes an elongated body with a central axis, the body having at a rear end a connector portion, and having at a front end a threading portion. The threading portion is provided with at least one helical thread-cutting structure and interconnected flank portions defining at least one helical flute which interrupts the helical thread cutting structure. The flank portions present exposed surfaces that are steam tempered. The rest of the tap is coated by PVD.

Abstract: A sorting system includes trolleys traveling along a path between respective stations for loading and unloading items in a direction transversely of the direction of travel of the trolleys. Each station includes an inductor for generating a variable magnetic induction field which is sensed by a detecting mechanism, such as an antenna, disposed on the trolley. In response to the magnetic induction field being detected, a loading/unloading device on the trolley (e.g., an endless belt) is actuated to load or unload items.

Abstract: An indexable cutting plate for ball race milling cutters includes upper and lower parallel surfaces, and an edge surface interconnecting the upper and lower surfaces. Cutting edges are defined by lines of intersection between the edge surface and the upper surface. The cutting edges include a main cutting edge extending radially with reference to an axis of rotation of the cutter, auxiliary cutting edge extending mainly axially, and an angle cutting edge defining a transition between the main and auxiliary cutting edges. The auxiliary cutting edge has a radius of curvature that is larger than that of the angle cutting edge and smaller than twice the diameter of the cutting head on which the cutting plate is mounted.

Abstract: The present invention relates to a cutting tool with increased tool life when machining grey cast iron. The tool comprises a solid CBN-containing body containing more than 60 vol % CBN and a coating. The coating consists of at least one layer of metal nitride, carbonitride or carbide with the metal elements selected from at least one of Ti, Nb, Hf, V, Ta, Mo, Zr, Cr, W and Al, with a total thickness of 2-7 &mgr;m and 2-8 &mgr;m of &agr;- and/or &kgr;-Al2O3. The coating is a CVD coating deposited at 900° C. or higher.

Abstract: A rotary tool includes first and second tool bodies defining an axis and clamped together in the axial direction by a screw. The tool bodies include axially extending male and female parts that engage one another to transmit rotary force. Spaced radially outwardly of the male and female parts are two sets of radial guiding structures for guiding the tool bodies in the radial direction, so a radial play can exist between the male and female parts.

Abstract: An end protector for a working element of a road grading machine or the like. The working element includes a body portion having a plurality of holes therein for holding picks that work a road surface. The end protector is held in place through the use of a vacant pick hole of the working element by a fastening element that extends through the hole.

Abstract: A sorting system includes a train of carriages moving along a track. Each carriage has an electrically driven cross belt for onloading and unloading items to be sorted. Some, but less than all, of the carriages, i.e., master carriages, carry electricity generating equipment, such as a track-engaging wheel connected to an electrical alternator, for converting kinetic energy of the train into electric energy. That energy is made available to all of the carriages through wiring that interconnects the carriages.

Abstract: A tool for rotating a cutting head relative to a shaft includes a pair of identical L-shaped shanks. Each shank includes first and second parts oriented transversely to one another, with a shoulder projecting from the first part into a corner formed by the first and second parts. A free end of each first part includes a through-hole receiving the second part of the other shank, wherein the shoulders face one another in order to be able to grip a cutting head. Each second part is slidable in its respective through-hole to enable the distance between the shoulders to be adjusted to accommodate different-size cutting heads.

Abstract: A tool holder for a cutting insert for chip removing machining includes a base body on which is disposed an insert-receiving seat for receiving a cutting insert. The seat includes an insert-support surface and two side surfaces upstanding from the insert-support surface. A slot forms a rear extension of the seat and includes a bottom surface disposed at a lower level than the insert-support surface. The body includes a wing which forms one side of the slot and one of the side surfaces of the insert seat. The side surfaces of the seat diverge in a direction away from the slot. A screw passes through a hole in the wing and extends transversely to a longitudinal direction of the slot. The screw is threadedly received in a hole formed in a side of the slot disposed opposite the wing, so that a tightening of the screw causes the side surfaces of the seat to more tightly grip the insert.

Abstract: A tool for chip removing machining includes a tool head having at least one chip pocket formed therein which serves as a common pocket for first and second replaceable cutting inserts. The inserts perform mutually different machining operations and have their respective active surfaces disposed in generally mutually facing relationship to one another within the pocket. A radially outermost portion of the first insert is spaced farther from a center axis of the tool head than is a radially outermost portion of the second insert.

Abstract: An improved cutting tool insert and a method for the preparation of such cutting tool insert, having a sintered alumina and silicon carbide whisker composite material body, comprising the steps of milling and mixing the powdered starting materials of said composite material and forming said material into a preformed workpiece, heating up said workpiece at a heating rate of from about 20 to about 60° C. per minute to a sintering temperature of between from about 1600 to about 2300° C., and holding at said sintering temperature for a holding time of from about 5 to about 60 minutes at a pressure of between from about 20 to about 100 MPa.

Abstract: The present invention relates to a cutting tool insert particularly for turning of steel comprising a cemented carbide body, a coating with a post treatment with

Abstract: A power system includes a power unit, a screw compressor, a hydraulic pump, and a hydraulic control system. The screw compressor is connected to the power unit to be driven thereby for compressing air. The screw compressor has an air intake opening and an adjustable air intake valve mechanism for opening and closing the air intake opening. The hydraulic pump pressurizes hydraulic fluid, and the hydraulic control system is operably connected to the pump and to the air intake valve mechanism for utilizing the pressurized hydraulic fluid to adjust the air intake valve mechanism. The compressed air is delivered to an air reservoir which returns lubrication oil back to the compressor in quantities commensurate with the degree of openness of the air intake opening.

Abstract: Rotatable tool for chip removing machining includes a rotatable holder part and a cutting part that is detachably connected to a front end of the holder part. In the front end of the holder part, a forwardly open slot is formed, which separates two elastically flexible branches of the holder part. For clamping of the cutting part on the holder part, a male/female coupling is provided, which comprises a pin on either the holder part or the cutting part and a corresponding pin-receiving seat in the other part. If the pin is on the holder part, then a manually induced elastic deformation of the branches towards one another reduces the diameter of the pin to enable the pin to enter the female part. Subsequent return of the branches toward a rest state thereof causes the diameter of the pin to expand and tightly hold the cutting part.

Abstract: A rotatable tool for chip removing machining having a rotatable holder part and a cutting part that is detachably connected to a front end of the holder part. In a front end portion of the holder part, a forwardly open slot is formed, which separates two elastically flexible branches of the holder part. For clamping of the cutting part on the holder part, a male/female coupling is arranged, which comprises a centrical, male-like pin on one of the parts and a corresponding seat in the other part. Disposed on the holder part radially outside of the male/female coupling are thrust load carrying support surfaces, which surfaces are at least partially conical and are engaged by corresponding support surfaces of the cutting part. During a cutting operation, axial thrust loads transmitted to the axial thrust support surfaces cause the branches to be pressed in a direction intensifying the radial contact between the pin and the seat.

Abstract: A gas burner in which a burner head is positioned within an inner pipe that is surrounded by an outer protective pipe. Fuel is delivered to the burner head through a fuel conduit positioned within the inner pipe, and combustion air is delivered through the inner pipe. The fuel conduit terminates short of the burner head and the wall of that conduit is provided with a plurality of holes. A further pipe surrounds at least the perforated part of the fuel conduit, and one end of the further pipe extends to the the burner head while the other end is sealed against the fuel conduit to form a mixing chamber between the outside of the fuel conduit and the inside of the further pipe. A second conduit is provided to conduct a given amount of air to the mixing chamber.

Abstract: A spider sleeve and seal apparatus for a gyratory crusher has upper and lower cylindrical sleeves disposed between the spider and a vertically slidable piston. Fixed o-rings are located between the sleeves and the spider, and moving seals are located in the piston. These seals prevent leakage from the hydraulic ring used to support the piston and shaft of the gyratory crusher.