Abstract: A disc and spacer for transporting materials on a roller screen. The disc includes a circular main body and a wear resistant portion. The circular main body has a centrally arranged opening, through which opening a centrally arranged imaginary axis extends. The wear resistant portion is arranged around the circular main body and includes a plurality of protuberances that are circumferentially arranged along the periphery of the wear resistant portion and which, project radially outward from the main body. The wear resistant portion has a first material and the main body has a second material, the first and second materials having different wear resistant properties.

Abstract: A construction machinery bucket part includes a body including a low alloy cast iron, and a wear resistant tip cast bonded to an end portion of the body and including a white cast iron. The construction machinery bucket part includes dissimilar materials, and has improved economic feasibility and wear resistance.

Abstract: A chopper blade for use in an agricultural harvester chopper to chop crop residue comprises a blade body and a hard face. The blade body comprises a cutting edge of the chopper blade. The hard face is applied on a surface of the blade body, and is harder than the blade body. The hard face comprises a serration pattern along a cutting edge such that the cutting edge wears to the serration pattern to match the serration pattern to form corresponding serrations in the cutting edge with the serration pattern becoming part of the cutting edge of the chopper blade during use of the chopper blade.

Abstract: A set for mechanical processing suspended fibrous material includes a die plate having receiving openings in a predefined arrangement for insertion of blade-shaped processing elements which jut out on a process side and are flowed onto by the fibrous material. The blade-shaped processing elements have each a plurality of foot regions in longitudinally spaced-apart relation, which pass through the die plate and jut out from the die plate on a process-distal. At least some of the foot regions of the processing elements reach into associated receiving grooves of a base plate on the process-distal side. As an alternative, transverse stiffening elements are arranged substantially orthogonally in the longitudinal direction of the processing elements such that the transverse stiffening elements stabilize the foot regions of the processing elements on the process-distal side.

Abstract: A bearingless groove router bit includes at least one cutting element affixed to a head of the router bit and has a first end spaced from an end of connected shank connected to the head and a second end adjacent to the second end of the head. The cutting element includes a cutting edge extending along the cutting element between the first end to the second end of the cutting element. The cutting edge may include a radial side edge that projects radially inwardly relative to a central axis of the router bit and a straight side edge that extends from an end of the radial side edge outwardly relative to the central axis to minimize tear out during cutting of a groove in a work piece.

Abstract: Method for producing a reamer such as a milling cutter intended to mill the acetabular cavity of a patient, the reamer including a rigid base with an interface for coupling to a tool holder, and including a cutter body which has a thin wall and is perforated and toothed. The rigid base is produced separately from the cutter body, by cutting out and drawing a first flat metal blank in a press.

Abstract: Arthroplasty components include an articular surface and a bone-facing surface. The bone-facing surface includes a concave arrangement of planar surfaces which converge as they approach a middle portion of the articular surface. Instruments and implantation methods are also disclosed.

Abstract: An embodiment includes a system for preparing fusion of joints, such as joints in the toes or fingers of an animal such as a human. The system may include one or more of complementary ball and socket joint reamers. A reamer may be separable from an intramedullary fixation rod. The rod may include channels to prevent rotation of the rod once implanted in bone. Other embodiments are discussed herein.

Abstract: The invention relates to a method for precision machining of crankshafts or camshafts to final dimensional tolerances Rz<10 ?m, preferably ?5 ?m and concentricity tolerances ?30 ?m, preferably ?6 ?m, which have been machined and at least partially subjected to hardening, wherein after the first machining has been carried out and subsequent hardening to 45 to 60 HRC, preferably 50 to 53 HRC, a final machining is carried out by means of at least one milling tool, wherein it is provided that the final machining is carried out by means of cutting inserts made of coated hard metal. The invention further relates to a milling tool for precision machining of crankshafts or camshafts by carrying out the method of the invention.

Abstract: A method is disclosed for dressing a tool used for machining an internally toothed gear. The method includes meshing an internally toothed gear-like dressing gear, which is rotatable about the dressing gear rotation axis, with a barrel-shaped, screw-like grindstone. For machining an internally toothed gear, the outer diameter of the screw-like grindstone after dressing is estimated before dressing, the angle of intersection between a dressing gear rotation axis and the screw-like tool rotation axis is set on the basis of the estimated outer diameter of the screw-like grindstone after dressing, and dressing is performed with the dressing gear and the screw-like grindstone meshed with each other at the set angle of intersection between the axes.

Abstract: A tool for machining a workpiece, in particular a milling tool, is presented. The tool incorporates a shank which is drivable rotatably about a longitudinal axis and is fixable to a tool holding fixture. The tool further incorporates a plate holding fixture that is arranged on one end of the shank, a support plate having at least one internal thread, a cutting element with at least one cutting edge, and at least one fastening element which is provided with an external thread that is adapted to the at least one internal thread.

Abstract: A reusable orthopaedic instrument includes a reusable orthopedic trial having a first outer surface and a second outer surface that is opposite the first outer surface. The second outer surface includes a plurality of sidewalls extending outwardly therefrom to form a cavity. A drain hole is formed in the second outer surface at a location within the cavity. The drain hole extends through the reusable orthopaedic trial from the second outer surface to the first outer surface. Further, the second outer surface slopes downwardly from the plurality of sidewalls toward the drain hole.

Abstract: An embodiment includes a system for preparing fusion of joints, such as joints in the toes or fingers of an animal such as a human. The system may include one or more of complementary ball and socket joint reamers. A reamer may be separable from an intramedullary fixation rod. The rod may include channels to prevent rotation of the rod once implanted in bone. Other embodiments are discussed herein.

Abstract: The invention relates to a rotary cutting tool (10), in particular a milling tool, boring tool or a reamer, with a metallic base tool body (12) with at least one preferably helical flute (16, 18), preferably with a pair of flutes, wherein a cutting element (24, 26) of an ultra-hard cutting material such as polycrystalline diamond (PKD) or polycrystalline, cubic boron nitride (PCBN) for forming a helically running cutting edge (28) is associated with the at least one flute and is connected such as soldered to the base tool body (12; 42; 70; 94). In order to increase the service life and simplify the manufacture, it is provided that the cutting element (24, 26) is constructed as a one-part diamond body (24, 26) or from several diamond segments in the form of a section of a solid body that is/are received in a receptacle (20, 22) constructed along the flute (16, 18), wherein the helically curved cutting edge is constructed in the diamond body or the diamond segments in a material-removing manner.

Abstract: A reconfigurable cutting tool includes a boring head at one end, an attachment portion at a second end that is opposite the first end, and a boring bar disposed between the boring head and the attachment portion. The boring bar is made of a shape memory material such that a geometry of the reconfigurable boring tool is selectively changed in response to an activation signal from a temperature controlling processor.

Abstract: A rotary cutting tool (10) comprises a shank (12) formed of a first material of a first hardness. The shank (12) has a first end (12a), and a plurality of elements (14) are provided at the first end (12a) of the shank (12). The elements (14) are formed of a second material of a second hardness greater than that of the first hardness. The elements (14) provide a platform to be able to create a plurality of cutting edges or teeth (18, 20a). A method of forming such a rotary cutting tool is also provided.

Abstract: A method of forming a rotatable cutting shaft member having a longitudinal axis and a plurality of axially spaced cutter elements for shredding substrates that are inserted in an opening in a housing of a shredder, in which the shaft member is a part of a shredder mechanism that is activated by a motor in the housing, is provided. The method includes turning opposing end portions of at least a longitudinal section of the rotatable cutting shaft member relative to one another in opposite directions about the longitudinal axis so as to twist at least the longitudinal section of the rotatable cutting shaft member to a predetermined helix angle; and mounting the plurality of axially spaced cutter elements on the rotatable cutting shaft member. The predetermined helix angle orients the plurality of axially spaced cutter elements on at least the longitudinal section in a helical arrangement.

Abstract: Described herein are several methods and apparatuses for treating a cutter tool adapted to be used in tunnel boring operations. In one form, an initial cutter member blank is formed and heat treated prior to a laser cladding process. An alloy is often applied to the surface of the cutter blank adjacent to the cutting elements by the cladding process whereby the cladding process has insufficient heat transfer from the cladding process to reduce hardness properties of the inserts and/or the cutter blank. In one example a fabric-like material defines the region of the exterior hard surface.

Abstract: A high shear angle cutting tool and method of making is disclosed. A rotary cutting tool with a plurality of teeth can cause damage to a work piece during cutting. By orienting the cutting angle of the teeth relative to the rotational central axis to high shear angle such as 50 or 70 degrees, the tool creates a high compression cut which is cleaner and less damaging to the work piece.

Abstract: A cutting tool is provided with a cutting surface on a first side of the cutting tool and an attachment member on a second side of the cutting tool. The cutting surface can have cutting edges with characteristics that vary along the cutting tool. Novel methods of manufacturing such cutting tools are also provided.

Abstract: A method of forming a processor disk for a processor of materials may include providing a disk blank with a central portion and a perimeter portion, with the perimeter portion extending between the central portion and a circumference of the disk blank, the perimeter portion having a perimeter surface; and applying material to the perimeter portion of the disk blank to form a plurality of teeth on at least the perimeter surface of the perimeter portion. A processor disk may comprise a disk blank with a central portion and a perimeter portion, with the perimeter portion extending between the central portion and a circumference of the disk blank and having a perimeter surface divided into opposite side surfaces by a circumferential edge; and a plurality of teeth formed on the perimeter surface through application of material to the perimeter surface.

Abstract: A tool bit (1) ready for use consists of a sintered material. It has a longitudinal axis (3). At least one swarf chamber (4) spaced from the longitudinal axis (3) land extending along the longitudinal axis (3) is formed in the tool bit (1). The tool bit (1) has at least one cutting edge (8, 10), which is formed in the tool bit (1) by grinding the already sintered tool bit (1), adjoining the swarf chamber (4). According to the invention the swarf chamber (4) is ground only partly and is otherwise unground.

Abstract: Methods include one or more of robotically positioning a cutting element on an earth-boring tool, using a power-driven device to move a cutting element on an earth-boring tool, and robotically applying a bonding material for attaching a cutting element to an earth-boring tool. Robotic systems are used to robotically position a cutting element on an earth-boring tool. Systems for orienting a cutting element relative to a tool body include a power-driven device for moving a cutting element on or adjacent the tool body. Systems for positioning and orienting a cutting element on an earth-boring tool include such a power-driven device and a robot for carrying a cutting element. Systems for attaching a cutting element to an earth-boring tool include a robot carrying a torch for heating at least one of a cutting element, a tool body, and a bonding material.

Abstract: A rotary cutting tool or end mill is provided, the tool comprising a plurality of pairs of diametrically-opposed, symmetrical, helical flutes formed in a cutting portion of the tool body, wherein the pitch between at least one pair of adjacent helical flutes is less than or greater than the pitch of at least one other pair of adjacent helical flutes in at least one radial plane along the axial length of the flutes, a plurality of peripheral cutting edges, wherein at least one of the peripheral cutting edges has a radial rake angle different from radial rake angle of a peripheral cutting edge of a different helical flute.

Abstract: Described herein are several methods and apparatuses for treating a cutter tool adapted to be used in tunnel boring operations. In one form, an initial cutter member blank is formed and heat treated prior to a laser cladding process. An alloy is often applied to the surface of the cutter blank adjacent to the cutting elements by the cladding process whereby the cladding process has insufficient heat transfer from the cladding process to reduce hardness properties of the inserts and/or the cutter blank. In one example a fabric-like material defines the region of the exterior hard surface.

Abstract: A spiral fluted tap is provided which includes a threaded portion having an external thread corresponding to an internal thread to be cut and a cutting edge formed along a spiral flute formed to divide the external thread, and being screwed into a prepared hole that is provided on a workpiece to cut an internal thread by the cutting edge on an inner circumferential surface of the prepared hole with discharging chips toward a shank via the spiral flute, the spiral flute having a stepped portion at a rear end of a chamfer portion or in a portion on a shank side from the rear end of the chamfer portion in the threaded portion, and a flute bottom diameter on a distal end side of the spiral fluted tap from the stepped portion being smaller than a flute bottom diameter on a shank side from the stepped portion.

Abstract: Embodiments of the present invention include composite articles comprising at least a first region and a second region and methods of making such articles. The first region may comprise a first composite material, wherein the first region comprises less than 5 wt. % cubic carbides by weight, and the second region may comprise a second composite material, wherein the second composite material differs from the first composite material in at least one characteristic. The composite article may additionally comprise at least one coolant channel. In certain embodiments, the first and second composite material may individually comprise hard particles in a binder, wherein the hard particles independently comprise at least one of a carbide, a nitride, a boride, a silicide, an oxide, and solid solutions thereof and the binder comprises at least one metal selected from cobalt, nickel, iron and alloys thereof.

Abstract: A rotating tool includes a tool body including a first end and a second end. A plurality of first helical flutes extend from the first end of the tool body, each first helical flute of the plurality of helical flutes defining a respective first cutting edge. A plurality of second helical flutes intersect with the first helical flutes at non-zero distances from the first and the second ends of the tool body, each second helical flute of the plurality of second helical flutes defining a respective second cutting edge. The first helical flutes and the second helical flutes are of opposite hands. The first helical flutes have a first pitch and the second helical flutes have a second pitch. A plurality of chip divider recesses are formed along each first cutting edge.

Abstract: A cutting tool is provided with a cutting surface on a first side of the cutting tool and an attachment member on a second side of the cutting tool. The cutting surface can have cutting edges with characteristics that vary along the cutting tool. Novel methods of manufacturing such cutting tools are also provided.

Abstract: The invention relates to a twin-shaft shredder for shredding solids or liquid-borne solids, comprising a casing, a first and a second shaft rotatably mounted in the casing, a plurality of first cutting disks on the first shaft, a plurality of second cutting disks on the second shaft, wherein the first and second cutting disks are axially offset relative to each other, at least some of the first cutting disks respectively engage in an interspace between two adjacent second cutting disks and some of the second cutting disks respectively engage in an interspace between two adjacent first cutting disks.

Abstract: A cutter element (100) for a rotary machine tool having an axis of rotation, the cutter element comprising a plurality of cutting edges (110) defined by at least one cutter structure (120) comprising superhard material, consecutive cutting edges being spaced apart by at most 10 mm and configured operable to cut a body when moved in a direction that is substantially non-aligned with the axis of rotation.

Abstract: A method for plunge milling a workpiece. The method includes rotating a cutting head while advancing the cutting head along a direction towards the workpiece; removing material from the workpiece with frontal teeth disposed on a frontal face of the cutting head; bending a tool holder configured to lead the cutting head inside the workpiece; stopping the advancing of the cutting head along the direction towards the workpiece when the cutting head has reached a predetermined depth inside the workpiece; and retrieving while rotating the cutting head from the inside of the workpiece such that side teeth of the cutting head remove material from the inside of the workpiece due to the bending of the tool holder.

Abstract: A device and a method of making thereof includes a milling cutter body that is connectable to a rotatable spindle or holder. The milling cutter body is provided with at least one series of a plurality of tangentially spaced-apart cutting edges or a plurality of tangentially spaced-apart seats intended for milling inserts having at least one cutting edge. The cutting edges or seats of the series are arranged such that, within the series, a first angle between a radius that intersects a first cutting edge and a radius that intersects another cutting edge, which is situated closest to the first cutting edge in a direction of rotation around the rotation axis, is smaller than a second angle between the radius that intersects the first cutting edge and a radius that intersects another cutting edge, which is situated closest to the first cutting edge in a direction opposite the direction of rotation.

Abstract: A groove cutter assembly includes a cutter blade and two washers. A shaft through hole is defined in a center of the cutter blade. The cutter blade includes two side surfaces. An engaging groove is defined in each of the two side surfaces around the shaft through hole in the cutter blade. A cutting edge is formed in a distal edge the cutter blade. A shaft through hole is defined in each of the two washers. Each of the two washers is securely engaged in one of the two engaging grooves of the cutter blade.

Abstract: A tool holder for use in a rotating spindle of a milling machine. The tool holder comprises a conically tapered shank portion for insertion into the spindle and a cutting tool mounting portion. Disposed between the shank and mounting portions is a flange portion. The flange portion includes a continuous channel formed therein which circumvents the shank portion and is adapted to accommodate a dampening member. The dampening member is compressible between the flange portion and the spindle when the tool holder is inserted into the spindle, and is adapted to eliminate harmonic resonance attributable to the use of the tool holder with a cutting tool.

Abstract: A cutting tool for performing cutting operations on a workpiece when the cutting tool is rotated about a central axis by a machine tool, the cutting tool includes a generally cylindrical body disposed about the central axis. The generally cylindrical body includes a first end and an opposite second end. The cutting tool further includes a cutting portion and a mounting portion. The cutting portion is disposed at or about the first end of the generally cylindrical body and includes a number of cutting edges structured to engage the workpiece during cutting operations. The mounting portion is disposed at or about the opposite second end of the generally cylindrical body and is structured to be coupled to the machine tool. At least a portion of the generally cylindrical body comprises a molded portion formed via a molding process about the cutting portion in a manner that couples the cutting portion to the generally cylindrical body.

Abstract: The shank (12) of a disposable rotary cutting tool (10) comprises a pipe section (16) cut from a drawn metal pipe. The tool head (14) is formed from a cut-out (18a, 18b) of a drawn metal sheet or a section of a metal tube by non-cutting machining. The pipe section (16) and the tool head (14) are advantageously attached by force fitting.

Abstract: A grooved incisor blade set for paper shredders is disclosed. A blade includes a crown, a groove juxtaposed with the crown, and a center hole for a cutting arbor, where the crown and the groove define a relief channel. A stair-shaped, U-shaped or V-shaped blade assembly is described. In one embodiment, a notched grooved incisor blade having notches proximate to the central hole comes in contact with a mating grooved incisor blade also having a central hole. Force is applied to the mating blade to displace some of the body of the mating blade into the notches, affixing the blades together. A method for forming shredder cutting blades includes providing a strip of metal, forming a crown in the strip of metal, forming a relief groove juxtaposed to the crown in the strip of metal, thereby forming a relief channel, and trimming the grooved incisor blade of excess metal.

Abstract: A method of manufacturing a cutting member (6) of a shaver (1) includes the steps of providing a plate-shaped carrier (10), cutting at least one cutting element (9a, 9b) free from the carrier except for a residual connection between a base (15, 23) of the cutting element and the carrier, and bending the cutting element relative to the carrier. The steps of cutting free and bending are performed simultaneously using a tool (11) having a combined punching and bending effect. By using such a tool, the action of cutting free is obtained by a tearing process which does not lead to a free space and a loss of material between the cutting element (9a, 9b) and the carrier (10). As a result, the strength of the carrier is not reduced by such a free space or loss of material.

Abstract: A tip (20) for a rotary machine tool comprising a superhard structure (12) joined to a cemented carbide substrate 14 by means of at least one intermediate layer (161, 62, 163) disposed between the superhard structure (12) and the cemented carbide substrate (14), the intermediate layer or layers (161, 162, 163) comprising grains of superhard material and grains of a metal carbide material dispersed in a metal binder material.

Abstract: A cutting tool incorporates a body terminating in cutting edges distal from a chuck mount and having an axial bore for reduced mass to raise the natural frequency of the tool. In certain of the embodiments, the body is preformed from a steel or carbide blank into a cylindrical pipe forming the hollow bore prior to grinding of the cutting edges. Filling of the bore with a light weight polymer to further absorb vibration can also be employed.

Abstract: Methods include one or more of robotically positioning a cutting element on an earth-boring tool, using a power-driven device to move a cutting element on an earth-boring tool, and robotically applying a bonding material for attaching a cutting element to an earth-boring tool. Robotic systems are used to robotically position a cutting element on an earth-boring tool. Systems for orienting a cutting element relative to a tool body include a power-driven device for moving a cutting element on or adjacent the tool body. Systems for positioning and orienting a cutting element on an earth-boring tool include such a power-driven device and a robot for carrying a cutting element. Systems for attaching a cutting element to an earth-boring tool include a robot carrying a torch for heating at least one of a cutting element, a tool body, and a bonding material.

Abstract: A modular conical chipper/canter head and method. A preferred method adjusts the cutting head for changes in chip length. The method includes the steps of providing an annular facing module, providing a conical, solid hub module for mounting one or more chipping knives, and at least one of (a) installing one or more control plates between the facing module and the hub module, and (b) removing the one or more control plates from between the facing module and the hub module, for spacing the facing and hub modules apart a selected amount.

Abstract: A cutter unit for a rotary shaver includes a series of cutters arranged in at least two rings around a central axis of a cutter unit. The rings are formed by forming two cutter discs, each with a plurality of cutters, and by nesting the discs, one into the other, in such way that their combined cutters form the at least two rings.

Abstract: A rotary cutting tool formed from a blank, the rotary cutting tool comprising at least one tooth having a root, a cutting edge formed of veined PCD, and a face disposed between the root and the cutting edge. The face, as viewed in a cross-section perpendicular to an axis of the cutting tool, includes a first curved surface proximate the cutting edge and a second curved surface proximate the root and the first curved surface. For each cutting edge, the blank is provided with a respective groove having a leading surface that corresponds in shape to the first curved surface of the respective tooth.

Abstract: Composite articles, including composite rotary cutting tools and composite rotary cutting tool blanks, and methods of making the articles are disclosed. The composite article includes an elongate portion. The elongate portion includes a first region composed of a first cemented carbide, and a second region autogenously bonded to the first region and composed of a second cemented carbide. At least one of the first cemented carbide and the second cemented carbide is a hybrid cemented carbide that includes a cemented carbide dispersed phase and a cemented carbide continuous phase. At least one of the cemented carbide dispersed phase and the cemented carbide continuous phase includes at least 0.5 percent by weight of cubic carbide based on the weight of the phase including the cubic carbide.

Abstract: A cutting tool incorporates a body terminating in cutting edges distal from a chuck mount and having an axial bore for reduced mass to raise the natural frequency of the tool. In certain of the embodiments, the body is preformed from a steel or carbide blank into a cylindrical pipe forming the hollow bore prior to grinding of the cutting edges. Filling of the bore with a light weight polymer to further absorb vibration can also be employed.

Abstract: A cutting element including a cutting face and a longitudinal axis passing through the cutting face. The cutting element includes at least a first portion of the cutting face that is angled at an angle of about 81 to about 89 degrees relative to the longitudinal axis of the cutting element. The cutting element can further include a substrate, a superabrasive an interface between the substrate and superabrasive layer. Further, the cutting face is provided with a surface roughness of 40 microinches or less.

Abstract: A method for manufacturing bone milling cutters, wherein a milling cutter toothing (12) is created at a distal face of a tubular milling cutter shaft (10) of a bone milling cutter at a given outer diameter (D) of the milling cutter shaft (10). The following steps are carried out: determining the tube circumference (U) of the milling cutter shaft (10); ascertaining an average desired tooth height (Hgew) of the milling cutter toothing (12); ascertaining the desired tooth period length (LZ?) of the milling cutter toothing from the desired tooth height (Hgew) at given parameters of a tooth period pattern; dividing the tube circumference (U) by the desired tooth period length (LZ); rounding the results to an even number value (Qz); and dividing the tube circumference (U) by the value (Qz) in order to obtain the tooth period length (LZ).

Abstract: An apparatus is disclosed for removing tissue from a patient's body. The apparatus comprises an elongate member defining a lumen and a tissue removal member disposed within the lumen. The tissue removal member comprises a flexible shaft formed from a plurality of strands, and a coil that is helically disposed around the shaft. The coil is substantially in contact with the shaft along a length of the shaft. The coil forms a plurality of outwardly extending projections and each pair of the plurality of outwardly extending projections defines a spacing therebetween. Upon rotation of the tissue removal member within the elongate member, material is conveyed through the lumen of the elongate member. A related method of manufacturing a tissue removal member is also disclosed.