Abstract: The present invention relates to a thread former for manufacturing an internal thread in a metal workpiece. The thread former includes a forming section having a common central axis of rotation, wherein the forming section has a plurality of lubrication grooves extending parallel to the axis of rotation. The forming section includes a plurality of ridge sections extending along a circumference of the forming section, the plurality of ridge sections being arranged for forming the internal thread in the metal workpiece, and wherein, in a circumferential direction, each two of the plurality of ridge sections are separated by one of the plurality of lubrication grooves. At least the one of the lubrication grooves, when projected into a projection plane perpendicular to the axis of rotation, is asymmetrical with respect to any radius intersecting a surface of the lubrication groove.

Abstract: A cutting insert which is excellent both in manufacturing performances and dimensional precision and forms a pair with a tool body and a gear cutter including the cutting insert are provided. A cutting insert has a first face which is a rake face, a second face, a peripheral side face, and a mounting hole. On a ridge line where the first face and the peripheral side face cross each other, a cutting blade is formed. The cutting blade includes a corner part capable of machining a tooth bottom of a gear, and a main part extending to the corner part. The peripheral side face includes an inner side face in contact with a tool body and a first flank facing the main part. The mounting hole penetrates the first flank and the inner side face so that a center axis crosses the inner side face perpendicularly. The cutting insert is formed having a wedge shape such that thickness of the first flank and the inner side face becomes smaller as it goes from one end to the other end.

Abstract: A whirling tool configured to machine a workpiece. The whirling tool includes a plurality of cutting inserts, a cutting insert carrier, and a coolant channel which is arranged in the cutting insert carrier. The cutting insert carrier includes a plurality of cutting insert receptacles for receiving and releasably fastening respectively one of the cutting inserts. The cutting insert receptacles are arranged distributed in the circumferential direction over the cutting insert carrier. The cutting insert carrier further includes a through-opening which extends along a central axis of the cutting insert carrier, and through which the workpiece can be passed during the machining. The cutting inserts protrude into the through-opening, and the coolant channel extends between an inlet opening and an outlet opening, wherein the outlet opening leads into the through-opening and/or is oriented towards the through-opening.

Abstract: A key cutting and decoding apparatus positions a key blank relative to two distinct, independently movable key cutters and decoding probes. A frame includes a reference axis extending longitudinally from the front of the frame to the rear of the frame. Two locking slots hold removable key blank holders upon a carriage assembly. The carriage assembly is arranged for movement along both an X-axis, generally axial direction of the reference axis, and a Y-axis, generally transverse to the reference axis of the frame. A first cutting assembly moves a cutting drill vertically, along a Z-axis generally orthogonal to each of the reference axis, the X-axis and the Y-axis. A second cutting assembly moves a cutting wheel rotationally, about a rotational axis orthogonal to the Z-axis.

Abstract: The invention provides a tool, a method and a machine with which roof ridge-shaped chamfers can be produced on teeth of an internally and externally toothed gearwheel with minimised changeover times during tool set up. For this purpose, a tool according to the invention comprises a tool carrier having a holding section for attachment in a tool holder and a chamfering tool, which is held on the end section of the tool carrier, said end section being associated with the other end face, and during use describes an impact circle with its cutting edge, the diameter of said circle being determined by the radial distance of the cutting edge of the chamfering tool from the axis of rotation of the tool. According to the invention, at least one further chamfering tool is attached in a middle section of the tool carrier which is offset relative to the end section provided with the chamfering tool towards the holding section of the tool carrier.

Abstract: Disclosed is a cutting tool mounted on a shaft rotating about an axis, including a body having first cutting inserts mounted with equal spacing at the outer periphery of the body, which first cutting inserts have a cutting edge extending across the width of the body at a predetermined peripheral radius from the axis; and second cutting inserts mounted with equal spacing adjacent the outer periphery on a first side surface of the body, which second cutting inserts have a cutting edge extending in an axial plane perpendicular to the axis. The cutting edge of each first insert extends up to a predetermined distance from the axial plane of the second inserts; and the cutting edge of each second insert preceding a first insert extends a predetermined radial distance outside the peripheral radius of the cutting edges of the first inserts. Also disclosed is a related apparatus.

Abstract: The present invention provides an apparatus and method for cutting a chamfer into the edge of a material while simultaneously making another cut in the material. The chamfer provides the cut material with reduced susceptibility to top surface edge swell.

Abstract: The disclosure relates to a ring-shaped tool for processing a work piece, wherein the tool has a fastening area for fastening onto a rotatable drive shaft, wherein the fastening area is centered with relation to the ring-shape of the tool, wherein the tool further has sprockets arranged around the circumference of the tool, wherein the sprockets are arranged on the head end of the tool, wherein the sprockets have an arc-shape seen in axial direction of the ring, the arc-shape having a summit, wherein the sprockets are formed in a mirror-symmetric manner relative to the ring surface of the tool which is cutting through the summit.

Abstract: A milling tool for hobbing a workpiece. The milling tool includes a cylindrical tool body having a rotation axis and a plurality of disc-shaped segments. Each of the segments including a hub part and a peripheral cam having a plurality of tangentially spaced-apart milling inserts. Each segment has a through hole situated on the rotation axis. Each of the holes is directed in relation to each other such that a central duct is formed in the cylindrical tool body. Bordering segments are detachably torsionally rigidly interconnected The milling tool also includes a first end piece, which on one side is detachably and torsionally rigidly interconnected with a first one of the segments and which on the other side has coupling members for torsionally rigid coupling to a source of torque, such that all torque from the source is supplied to the cylindrical tool body via the first end piece.

Abstract: A gear machining apparatus includes a skiving mechanism positioning a work to be machined and a pinion type cutter on axes skewing from each other, the skiving mechanism rotating the work at a predetermined position and feeding the cutter while rotating in a direction of a tooth trace of a gear to be formed at the work synchronously to the rotation of the work for producing the gear from the work. The cutter includes a tooth surface which is formed with an involute region having an involute curve in an area including a pitch circle in a tooth depth direction, an addendum region continuously formed from the involute region to an addendum, and a dedendum region continuously formed from the involute region to a dedendum the addendum region and the dedendum region being shaped in a configuration different from the involute region.

Abstract: A power skiving tool for producing multiple tooth gaps by means of a power skiving method on a ring-shaped or disk-shaped workpiece, which has a workpiece axis of rotation is provided. The power skiving tool includes a tool axis of rotation, a skiving conical body, which is in the form of a hyperboloid or truncated cone, and which is arranged rotationally-symmetrically to the tool axis of rotation, and multiple cutting teeth, which protrude essentially radially out of a lateral surface of the skiving conical body. Each of the cutting teeth has a rake face and at least one cutting edge, and all rake faces have a cutting surface normal, which encloses an acute angle, which is less than 40°, with the tool axis of rotation, and wherein the power skiving tool is designed for axially-offset power skiving of the workpiece.

Abstract: A ring gear or pinion common outside chamfer tool and a common inside chamfer tool are disclosed. The common chamfer tools comprise a shank, a tip end and a chamfering edge. The shank is attachable to a gear cutter and has a tip end formed on the distal end thereof. The chamfering edge is positioned within the tip end and is configured to form a tooth top-land radius of multiple gear ratios. A method of designing a ring gear or pinion common outside chamfer tool and common inside chamfer tool for multiple gear ratios is also described.

Abstract: Gear milling cutter with replaceable milling inserts mounted on flank sides. Some are root inserts placed in tangentially spaced-apart positions along the periphery of the basic body; others are flank inserts tangentially spaced-apart and in ring formation radially inside the root inserts. Sweep areas of radially separated inserts overlap in a ring-shaped overlapping zone by radially inner ends of root inserts being situated nearer the center axis than radially outer ends of the flank insert next inside. A part edge of the cutting edge, located between the straight main edge and one of the ends of the insert is shorter than the main edge and deviates from a straight reference line in the extension of the main edge at a deviation angle of at most 10°. Cutting edges of root inserts overlap cutting edges of flank inserts in a point of intersection situated between end points of the part edges.

Abstract: Milling tool and milling insert kit are provided for the gash milling of a workpiece. The tool comprises a tool body that defines a rotation axis and has a first end, an opposite second end, and a peripheral surface that extends around the rotation axis between the first end and the second end. A large number of separated seats, which are arranged one after the other in the tool body along a line and receive one each of corresponding number of replaceable milling inserts, comprise a primary main cutting edge and a secondary main cutting edge that converge to each other. The milling inserts comprise outer milling inserts, which project from the tool body by a first length from the rotation axis, and inner milling inserts, which project from the tool body by a second length from the rotation axis. The first length is considerably greater than the second length.

Abstract: A thread-milling cutter including a tool holder (2) and at least one cutting insert (3) with a longitudinal cutting edge (30) mounted on it. The tool holder (2) includes at least one pocket (20) extending essentially in an axial direction (A) and adapted for receiving the at least one insert (3). The cutting insert (3) has at least one positioning plane (31) on a first abutment surface of the insert (3) opposite the cutting edge (30) for a radial positioning of the insert (3) in the respective pocket (20). At least one protrusion (32) is provided on the abutment surface, a side surface (320) of the protrusion (32) being oriented at an angle (?) to the axial direction (A) of the cutter (1) and adapted for contacting a surface (22) of the pocket (20) for an axial positioning of the insert (3). Also described is an insert for a thread-milling cutter.

Abstract: The present disclosure relates to a gear cutting machine for gear cutting a workpiece, in particular a toothed wheel, by form milling having at least one cutter head for mounting at least one end mill, wherein the cutter head or the end mill and/or the workpiece mount are adjustable and the end mill axis can be aligned approximately parallel to the machined tooth flank of the clamped workpiece, and wherein the cutter axis can be applied to the flank contour and the end mill has an outer contour corresponding to the flank contour.

Abstract: Milling tool formed for hobbing of workpieces having cogs has a cylindrical tool body defining a rotation axis and a plurality of disc-shaped segments. Each segment includes a hub part having two opposite plane-parallel end surfaces extending perpendicular to the rotation axis, and a peripheral cam having a plurality of tangentially spaced-apart milling inserts. Bordering segments are detachably interconnected by male and female members co-operating in pairs and situated with the rotation axis extending through the members, each of which include a contact surface converging from a big end toward a small end and, in a cross-section across the rotation axis, form an out-of-round curve. Contact surfaces are dimensioned so that, when members are brought together, they direct their two bordering segments toward an end position centred and mutually angularly determined by the out-of-round cross-section curve and where plane-parallel end surfaces abut against each other. An individual segment is disclosed.

Abstract: The invention relates to a side-milling cutter for producing a toothing system, having at least one insert having a rectangular cross section arranged in a holding pocket as an insert seat, having two top surfaces facing away from each other, having two long insert sides located opposite each other and also having two narrow insert sides located opposite each other. Of four cutting edges of the insert which extend along the long insert sides in the longitudinal direction, in each case two cutting edges delimit the top surfaces of the insert at the edge, each cutting edge extending in a curve.

Abstract: A gear milling cutter, including a basic body being rotatable around a center axis and having a rotationally symmetrical basic shape, which includes two opposite flank sides that extend radially inward from a periphery of the basic body, and a plurality of replaceable milling inserts, which are mounted on the flank sides and individually comprise a cutting edge that is formed between a chip surface and a clearance surface and extends between a pair of opposite and radially separated ends of the milling insert. Some of the plurality of milling inserts are root inserts, which are placed in tangentially spaced-apart positions along the periphery of the basic body. Others of the plurality of milling inserts are flank inserts, which are tangentially spaced-apart and placed in at least one ring formation located radially inside the root inserts.

Abstract: A milling cutter tool, including a basic body and a cutting body. The basic body includes an envelope surface and two opposite ends between which a geometrical center axis extends around which the basic body is rotated. The cutting body is fixed in a seating of the basic body and includes a pair of opposite main surfaces, a pair of opposite sides, and a pair of opposite end surfaces between which an imaginary, axial neutral plane extends situated halfway between the two main surfaces. The cutting body includes a set of chip removing teeth, which protrude from the envelope surface of the basic body, and are arranged in a row one after the other along at least one of the pair of opposite sides of the cutting body. Each one of the teeth includes a chip surface formed adjacent to a cutting edge from which the tooth extends between a pair of flanks along a length extension which is orientated at an angle (?) to the neutral plane.

Abstract: A cutting tool having a two-sided cutting blade positionable in a tool holder to form a blade hob. The inventive cutting tool can be used to duplicate the generation action of single or multi-threaded, multi-gashed hobs. The two-sided cutting blade includes one or more tooth profile shaped cutting teeth located at each end of a cutting blade body. The cutting teeth on respective ends are axially offset from one another. The cutting blade is moved to a number of generating positions to generate the desired tooth surface on a workpiece.

Abstract: Bevel gear cutting machine for chamfering and/or deburring edges on the teeth of a bevel gear. The gear-cutting machine comprises a workpiece spindle, which receives the bevel gear coaxially of a spindle axis. Furthermore, a deburring spindle is provided for the receiving of a deburring tool and several numerically controllable axes are given. A deburring blade head with several blade cutter-like blade inserts serves as deburring tool, whereby the blade inserts are insertable in recesses of the deburring blade head essentially radially oriented to a deburring spindle axis (E) and comprise edges for chamfering and/or deburring.

Abstract: The invention relates to a drill thread milling cutter (1) for producing a bore and for the subsequent milling of a thread in the bore, said drill thread milling cutter (1) having a working region (2), on the circumference (3) of which a number of drilling and milling cutting edges are arranged. A number of milling cutting edges (7, 8, 9, 10) greater than the number of drilling cutting edges (17) by a factor greater than 2 are arranged or are effective in the direction of rotation.

Abstract: Files of different sizes and shapes are secure in place, in the fingers of a conventional medium size tap wrench by screwing down the ferrule which is larger in format then the threaded nut used on tap wrenches now, for a better grip to hold and tightened the fingers around the file tangs and using a re-design tap wrench shaft. Taking out the T-handle section and replacing with a hexagonal shaft for a one piece unit. For inserting into a wood handle or molded into a plastic handle and using the same size tap wrench shaft used for the invention, not the sizes that are sold in stores today.

Abstract: Files of different sizes and shapes are secure in place, in the fingers of a conventional medium size tap wrench by screwing down the ferrule which is larger in format then the threaded nut used on tap wrenches now, for a better grip to hold and tighten the fingers around the file tangs and using redesign tap wrench shaft. Taking out the T-handle section and replacing with a hexagonal shaft. A one piece unit for inserting into a wood handle or molded into a plastic handle using the same size tap wrench shaft used for the invention, not the sizes that are sold in stores today.

Abstract: A thread forming tool includes an elongated body defining a longitudinal center axis. The body including a thread forming portion formed by one or more annular ridges oriented perpendicular to the axis. The body has a non-circular shape in a cross sectional plane oriented perpendicular to the axis at an axial center of the ridge.

Abstract: A gear-forming cutter for forming a gear tooth on a non-metallic blank includes a spindle and a blade portion. The blade portion extends from the spindle along an axis of the spindle, and includes a blade surface and a surrounding surface. The blade surface has front and rear sides, and opposite first and second lateral sides. The surrounding surface is disposed around the axis, and extends from the first lateral side to the second lateral side. Any point of the first lateral side is spaced apart from the axis by a first radial distance. Any point of the second lateral side is spaced apart from the axis by a second radial distance smaller than the corresponding first radial distance. The first radial distance corresponding to the rear side is larger than that corresponding to the front side.

Abstract: The present invention relates to a thread milling cutter, which includes a cutting head, having a holder with a number of cutting insert pockets, a number of threading inserts, which are received in the cutting insert pockets and an attachment integrated with the cutting head, which attachment is intended to be received in a tool coupling. The invention also relates to the holder per se and to a method for milling an external thread on a spigot. The holder is provided with an internal cavity, which has an extension both radially and axially with regard to a rotational axis of the thread milling cutter, and the cutting insert pockets are provided in the internal cavity.

Abstract: An apparatus is provided for manufacturing a gear component. The apparatus includes a plurality of tooling stocks movable relative to a base. The tooling stocks function to retain a component, as well as operably driving a combination hob/shaver tool and a combination chamfer/debut tool. The apparatus reduces the number of machines required to complete the gear component as well as reducing the cycle time for complete component manufacture. In this way, a more efficient manufacturing system is provided, whereby capital investment and operational costs are reduced.

Abstract: An apparatus is provided for manufacturing a gear component. The apparatus includes a plurality of tooling stocks movable relative to a base. The tooling stocks function to retain a component, as well as operably driving a combination hob/shaver tool and a combination chamfer/debur tool. The apparatus reduces the number of machines required to complete the gear component as well as reducing the cycle time for complete component manufacture. In this way, a more efficient manufacturing system is provided, whereby capital investment and operational costs are reduced.

Abstract: A cutting tip having a three-layer laminated structure is provided. The tip is made from a disc-shaped three-layer laminate wherein a second layer consisting of a hard sintered compact of CBN or diamond is sandwiched by a first layer and a third layer consisting of a tool material such as cemented carbide. Prismatic blanks of rectangular cross-section are cut out by cutting the three-layer laminate in strips. Semi-completed tips of a desired shape are obtained by cutting up the prismatic blanks. Desired cutting edges are formed on the semi-completed tips to produce completed tips. Because prismatic blanks are obtained from a three-layer laminate and semi-completed tips are cut out from the prismatic blanks like this, the semi-completed tips can be obtained in large numbers, yield is high, and the manufacturing cost of the tip can be reduced.

Abstract: A thread milling cutter including a shank and a milling region adjoining the shank at a front end of the shank and including at least two rows of teeth and extending parallel to each other, with the teeth of both rows having the same height and forming each two flanks, with the respective teeth of both rows being associated with respective circumferential planes, and with one flank of a respective tooth of one of the rows being shifted, viewed in a circumferential direction, in an axial direction, forward with respect to one flank of a respective tooth of another of the rows, or another flank of the respective tooth of the another of the rows being shifted viewed in a circumferential direction, in the axial direction, backward with respect to another flank of the respective tooth of the one of the rows, the one flank forming a front offset and another flank forming a rear offset, with front and rear offsets alternating with each other.

Abstract: This invention relates generally to a thread cutting insert and more particularly to a thread cutting insert comprising a base and a threading portion. The threading portion has a first thread removal portion and a second thread removal portion for minimizing lead-in and exiting threads, and a cutting portion for cutting a plurality of internal threads. The principle use is for applications that have fluid communicated through the workpiece, such as a fuel injector.

Abstract: A base member such as an elevation pipe of a photographic tripod is severed and rack teeth are formed thereon in a single operation while the base member remains clamped in a V-block. The first rack tooth on each side of the location where the base member is severed includes half of a trough portion between adjacent rack teeth. Additional trough portions forming the remainder of the teeth are formed, either in the same severing and shaping operation, or in a later shaping operation. The formation of the inner half trough portions ensures that, when the two severed ends of the base member are brought together, a smooth transition will exist between the two rack portions. In addition, since the two severed ends always include half troughs immediately adjacent thereto, weaknesses and chipping resulting from the presence of partial rack teeth in these locations is avoided.

Abstract: A tool for manufacturing crown wheels by means of a machining hobbing process, which consists of a disc which can rotate about its axis and on the circumference of which machining elements are disposed whose cutting edges lie in the surface of a profile which mainly extends over the circumference of the disc as helical ribs. In each cross-sectional plane perpendicular to the screw direction of the ribs, the profile has the shape of a number of profile teeth situated next to one another. The profile shape is based on the base geometry of a pinion which is characteristic for the crown wheel to be manufactured and has involute toothing. The profile has such a shape that a part thereof lies outside the surface of revolution which is formed by rotation of the addendum circle of the characteristic pinion about the rotational axis of the tool.

Abstract: A thread cutter has a set thread cutting tip for forming a pitch on a workpiece. The cutting projections that form the cutting edge are staggered by a few radians about the rotational axis of the cutter, so that they do not simultaneously come into cutting engagement with the workpiece surface and instead engages the surface in a predetermined sequence, leading to safe loading and improved machining accuracy.

Abstract: A rotary disc cutter for cutting workpieces, especially gears and the like. The rotary cutter comprises a plurality of cutting blades arranged about the periphery of a rotary disc cutting body with at least a portion of the blades being roughing blades comprising a tip and two sides with each side having first and second side portions. The first side portion along with the tip defining a cutting surface of the blades while the second side portion is relieved such that a clearance is formed between the second side portion and the surface of the workpiece. The clearance being of a dimension to allow the flow of coolant therethrough thereby improving the cooling of the cutting surface and enhancing the flow of chips away form the vicinity of the blades. The invention further includes a substantially reduced number of blade segments. Alternative blade tip configurations are also disclosed.

Abstract: A milling cutter has replaceable cutting inserts mounted on a toothed disc or drum body. Seatings for the inserts on the teeth locate them at spaced intervals on the periphery of each tooth. The inserts of at least one tooth of the body are peripherally staggered in their seatings relative to the inserts on at least one other tooth such that the staggered and spaced inserts on the teeth have paths of rotation that intersect to define a continuous profiled cutting line. The inserts have their cutting edges ground in situ on the teeth to define the profile of the cutting line. By this method a finish quality profiled surface can be produced using cutting inserts that are initially of standard form.

Abstract: A method for determination of longitudinal and profile modification of tool gear tooth (I) which linearly meshes with a gear to be machined, wherein modification parameters are determined from the following relationship: ##EQU1## where: .delta.--the amount of modification of the tool gear tooth (I) in a direction perpendicular to a radius r identifying the location of a contact point on a machining surface (5) relative to a centre (O) of rotation of the tool gear;p--the requisite change in the normal component of the cutting force;G--the rigidity of an arrangement providing for synchronous rotation of the gear blank and the tool gear as reduced to the tool gear axis.

Abstract: A helical toothed shaving cutter used for finishing or shaving of gears as well as a shaving cutter suitable for plunge cut shaving. The shaving cutter includes a multiplicity of ribs forming the cutter tooth flanks, arranged in a manner substantially symmetrically with respect to each axial centerline of each of the cutter teeth, and each of the ribs has both a positive rake angle at its leading cutting edge and a negative rake angle at its trailing cutting edge as viewed in the direction of lateral sliding direction of along the tooth trace cutter.

Abstract: Apparatus and cutting insert for milling threads into a workpiece using a single hard cutting insert having a plurality of cutting teeth or a plurality of hard cutting inserts each providing a single cutting surface.

Abstract: Thread rolling dies for pointed fasteners having an improved working face contour which promotes displacement of blank material from the blank point area at an early stage in the thread rolling sequence to avoid excessive pressures in the die and blank at the finishing stages of the rolling sequence. Thread cutters include an extend section that presurfaces the rise angle of the die working face to produce uniform, improved thread profiles.

Abstract: Disclosed is a sprocket cutter in which there is a cutter body having a plurality of pockets along its periphery and a plurality of wedge recesses facing the periphery within each pocket. There is an array of inserts disposed within each of the pockets, each of the inserts having a cutting portion and a plurality of wedges equal in number to the number of inserts and wedge recesses. Each of the wedges is interposed between each of the inserts and each of the wedge recesses so that, as each of the wedges is moved inwardly into its corresponding wedge recess, each of the inserts is securely clamped between its corresponding wedge and the pocket. Each of the inserts is positioned so that the cutting portion of each insert extends beyond the periphery of the cutter body. Each of the inserts cuts a segment of the sprocket contour as the cutter body rotates with adjacent segments of the sprocket contour being cut by inserts located in different pockets. There is also a method of assembling the sprocket cutter.

Abstract: A gear or rack-shaped tool for precision machining of tooth flanks of gears is provided with a coating of a hard material like diamond or cubic bornitride (CBN). In order to be able to apply this coating without any problems, the tool includes two connected halves. Each half includes a base member with teeth which project axially beyond one side of the base member every second tooth being removed. The projecting teeth of each half project into the gaps created by the teeth removed from the other half.