Abstract: A milling head is provided having a basic body and cutting inserts which can be adjusted in the basic body in recesses and are clamped down by a clamping element which is disposed in the recesses.

Abstract: A milling cutter having a cutter body with a plurality of cutting inserts secured thereto. Each cutting insert has a serrated peripheral surface comprising crests and troughs which are aligned with crests and troughs of serrations of an adjacent portion of the cutter body.

Abstract: A milling cutter with tangentially mounted cutting inserts includes cutter pockets that are arranged at one end of the cutter body such that the screws for retaining the inserts generally radiate from the cutter's center. The cutter pockets are designed to secure a generally rectangular insert with eight or less cutting edges. The number of inserts and corresponding flutes vary as a function of the diameter of the cutter body. For example, four inserts with corresponding flutes are mounted on a 1.25? diameter cutter body, and three inserts with corresponding flutes are mounted on a 1.00? diameter cutter body. The increased number of flutes provide for increased metal removal rates and higher feed rates, as compared to an inserted ball nose mill or end mill.

Abstract: The helical rotary cutter includes a cylinder with a plurality of grooves that extend from one cylinder end to the other end. Each groove has a leading groove wall and a trailing groove wall. The leading groove is in a first wall plane that extends outwardly away from the rotor axis in the direction of rotation and intersects the rotor axis. The trailing groove wall is in a second wall plane that extends outwardly away from the rotor axis in the direction of rotation and intersects the rotor axis. A plurality of first base support surfaces are each in a base support plane, perpendicular to the first wall plane and intersect each other. A plurality of second base support surfaces are each in a base support plane, perpendicular to the second wall plane and intersect each other. A rectangular flat cutter blade is clamped to each base support surface.

Abstract: A tool intended for chip removing machining includes a holder and a cutting insert which have respective connecting surfaces arranged to engage each other and define an interface. A ridge having a tapering cross-sectional shape is formed in one of the connecting surfaces, and a groove having a tapering cross-sectional shape is formed in the other connecting surface, which groove receives the ridge. Both of the ridge and groove are in the shape of curves as viewed in a direction perpendicular to the respective connecting surface. The curve shape may be circular, elliptical, or polygonal.

Abstract: A rotary cutting tool (10) having a plurality of removable cutting inserts (16) is provided. The rotary cutting tool (10) comprises a rotary tool body (12) for rotation about a central shaft. The tool body includes an outer profile peripheral surface (18). A plurality of slots (24) extend radially inwardly from the outer peripheral edge of the tool body. A plurality of cutting inserts (16) are placed in the slots (24).

Abstract: A method for reusing profile insert blades maintains axial, radial and profile dimensions of a cutting tool. The method includes duplicating an original profile on a used profile insert blade by sharpening a profile edge of the used profile insert blade to form a sharpened profile edge with a new profile that is shifted longitudinally along a length of the profile cutter blade relative to an original profile position. Material is removed from a reference edge of the sharpened profile insert blade to form a new reference edge, for positioning the resharpened blade in a longitudinally changed position so that the new adjusted profile has similar axial, radial and profile dimensions as compared to the original profile.

Abstract: A cutter system that is designed to create a continuous cutting true helix while having true helical inserts that are indexable on at least two cutting edges. The shape of the insert allows an interlocking overlap of the cutting edges for an all effective true helical cut. The helix ground into the insert faces creates a smooth cutting action as a solid helical endmill. High positive radial and axial rakes enable free cutting machining with a fine finish and low horsepower consumption. The back of the insert has a diamond shaped island that is used for locating the insert in the mounting pocket of the cutter and is used for face contact on lockup when the insert screw is tightened. The mounting pocket is designed for ease of manufacture to limit tolerance buildup to ensure repeatable insert positioning and to maintain accuracy for a fine cutting finish. The insert screw hole is placed in the cross hole location for allowing an unobstructed cutting face and a larger diameter center core in the cutter body.

Abstract: A milling cutting has a rotatable cylindrical tool carrier and is provided with polygonal cutting inserts including radial cutting inserts on the sides of the carrier and longitudinal cutting inserts on the cylindrical periphery which alternate with the radial inserts. The tangential cutting inserts have their cutting edges inclined to the axis or rotation at about 25° and have their rear most parts at a spacing from the cutting edge of the next following radial insert of less than 5 mm. The tool is especially useful for machining the cheeks and pins of a crank shaft.

Abstract: A cutting tool has at least one insert receiving pocket with a cutting insert retained therein. The insert receiving pocket has a base wall and a side wall transversely directed to the base wall with a circular recess having a peripheral wall extending downwardly from the base wall. A threaded bore extends downwardly from the lower wall of the recess. The cutting insert has an upper surface, a lower surface and a cylindrical protrusion having peripheral surface extending downwardly from the lower surface. A through bore extends through the cutting insert from the upper surface. A retaining screw passes through the through bore and threadingly engages the threaded bore with the peripheral surface abutting the peripheral wall and with the lower surface abutting the base wall.

Abstract: A milling tool includes a milling body and a plurality of cutting inserts. The milling body has fastening devices to hold the cutting inserts in a plurality of respective insert pockets each having at least one base surface. Each of the cutting inserts has at least one cutting edge. The tool has a rotational axis and a rotational direction, as well as a feed direction and an end surface. The milling tool is provided to cut a work piece substantially in an axial direction of the tool, which is substantially perpendicular to the feed direction.

Abstract: In order to eliminate errors in roundness and the occurrence of helical waves, a skiving head is provided with at least three skiving blades arranged in a radially displaceable manner in the skiving head. With this skiving head, both the requirement for self-centering of the skiving blade set as well as the requirement for circular skiving geometry with consistent cutting depth are fulfilled.

Abstract: A tool for removing material from a workpiece includes a tool body equipped with at least one roughing head and at least one finishing head. The finishing head includes a holder containing at least first and second finishing inserts. The first finishing insert has a cutting edge which extends a distance F1 from the tool body. The second finishing insert has a cutting edge which extends a distance F2 from the tool body. The distance F1 is less than the distance F2.

Abstract: At least two cutting plates are provided for a metal cutting tool, particularly adopted for milling work, which are in direct contact with each other and therefore support each other. A particularly simple design of a plate seat may be used for a plurality of teeth with the cutting plates of a single chip groove in direct contact with each other for permitting a large metal cutting output.

Abstract: A tool for machining bore surfaces having at least four cutting edges in respective pairs, one pair of cutting edges are arranged so as to be offset from one another as viewed in the axial direction of the tool, one pair may be diametrically opposed and another pair may be diametrically offset and not diametrically opposed.

Abstract: A diagonal ledge (22) is machined into each of the sidewalls (20) of the holder (12) with the ledges (22) crossing one another at an intersection B and the holder (12) is characterized by the bottom (18) of the pocket separating the ledges (22) to define a space between the ledges (22). A cutting insert (24) is characterized by a raised portion (32) on each face (26) thereof to present a pair of parallel and spaced shoulders (34) on each face (26) with the shoulders (34) on the first face (26) crossing the shoulders (34) on the second face (26). The assembly (10) is characterized by the shoulder (34) on the first face (26) seated on one of the ledges (22) and the shoulder (34) on the second face (26) seated on the other of the ledges (22) with a pair (28, 30) of cutting edges exposed for cutting. When worn, the insert (24) may be flipped one hundred and eighty degrees for exposing the other pair of cutting edges (28, 30).

Abstract: A cutter system that is designed to create a continuous cutting true helix while having true helical inserts that are indexable on at least two cutting edges. The shape of the insert allows an interlocking overlap of the cutting edges for an all effective true helical cut. The helix ground into the insert faces creates a smooth cutting action as a solid helical endmill. High positive radial and axial rakes enable free cutting machining with a fine finish and low horsepower consumption. The back of the insert has a diamond shaped island that is used for locating the insert in the mounting pocket of the cutter and is used for face contact on lockup when the insert screw is tightened. The mounting pocket is designed for ease of manufacture to limit tolerance buildup to ensure repeatable insert positioning and to maintain accuracy for a fine cutting finish. The insert screw hole is placed in the cross hole location for allowing an unobstructed cutting face and a larger diameter center core in the cutter body.

Abstract: The purpose is to improve the surface roughness Rz of a cut surface to 1.6 &mgr;m or under in cutting e.g. hardened steel. The ball end mill has a cutting blade made of a polycrystalline hard sintered material containing 20 to 95 vol % of cubic boron nitride. The cutting blade has a ridge portion having a radius of curvature of 5 to 30 &mgr;m. A flank and a rake face or a negative land of the cutting blade connect smoothly with the ridge with the radius of curvature. The ridge portion of the cutting blade has a surface roughness of 0.1 to 1.0 &mgr;m in terms of 10-point average roughness (Rz).

Abstract: A rotary cutting tool having a plurality of removable cutting inserts is provided. The rotary cutting tool comprises a rotary tool body for rotation about a central shaft. A plurality of slots extend radially inwardly from the outer peripheral edge of the tool body for supplying a plurality of cutting inserts. Each of the cutting inserts has a geometrical configuration. The geometrical configuration is for engagement with an annular rib on an attachment ring. A pair of attachment rings entrap the tool body and cutting inserts therebetween. The ribs on the attachment rings contact only the insert by way of an interference fit with the geometrical configuration on the tool insert and the geometry of the groove in the tool body thereby locking the tool insert with respect to the tool body.

Abstract: A rotatable milling tool includes a body, and at least one set of circumferentially spaced cutting members that are intersected by a common plane oriented perpendicularly to a longitudinal center axis of the body. The set of cutting members includes at least three cutting members mounted in an envelope surface of the body. Each cutting member includes a flank surface and a cutting edge disposed adjacent to the flank surface. Each cutting edge has axially spaced apart ends. The flanked surface of each cutting member forms a clearance angle with a tangent extending through the respective cutting edge. The flank surface of the insert has a larger clearance angle than the flank surfaces of at least two other inserts in the same set. During a milling operation, the cutting members with smaller clearance angles tend to produce stability and vibration-free rotation, while the cutting member having the larger clearance angle ensures a high precision (smooth) machining.

Abstract: The present invention provides a replaceable cutting insert for use in a cutting tool. The cutting insert has a recess with flat and non-coplanar side surfaces on either side of the recess. The cutting insert is retained in an insert pocket of the cutting tool by three-point contact between contact edges of the pocket and points on the side edges of the recesses on two adjacent side surfaces of the insert.

Abstract: A cutting insert includes an upper, lower and side surfaces and at least one leading cutting edge and a trailing wiper edge formed at an intersection of the upper surface with the side surface. A corner separates the leading cutting edge from the trailing wiper edge. The top surface includes a plurality of planar rake surfaces that extend inwardly and downwardly toward a seating surface of the insert. The top surface also includes a plurality of chip deflecting surfaces extending inwardly and upwardly toward the seating surface to form a transition zone between adjacent rake surfaces. The rake surfaces form a land angle with respect to a line perpendicular to the leading cutting edges. Additionally, a back wall surface extends upwardly from the rake surfaces to the seating surface to form a transition zone between the rake surfaces and the seating surface.

Abstract: A rotatable cutting tool has a shank portion for coupling to a tool driving device and a cutting portion in which are retained plural replaceable cutting inserts, each insert having at least one cutting edge. The shank portion includes a mounting face for removeably supporting an insert mounting disk having plural recesses at the periphery thereof for receiving the replaceable inserts. Each recess provides at least one seating surface for an insert, and includes opposing face portions between which an insert is releasably retained. The disk includes a central bore and radial grooves, at least one radial groove connecting the central bore and each insert receiving recess. The disk includes a concave central portion surrounding the central bore. A clamping means secures the disk to the shank and is used to elastically deform the concavity of the disk, whereby clamping forces are built and relaxed on all inserts placed in the disk concurrently by adjustment of the clamping means.

Abstract: A milling tool includes a rotary cutting head having an end surface in which grooves are formed. The grooves communicate with a duct extending coaxially completely through the center of the cutting head to conduct cooling/lubricating fluid to cutting inserts mounted at outer ends of the grooves. The grooves induce a flow of fluid from inner ends of the grooves to the outer ends in response to rotation of the cutting head. A removable deflector can be attached to the end surface to deflect fluid from the main duct to the grooves.

Abstract: A cutting insert has an insert body with at least one pair of cutting regions. Each cutting region is comprised of a cutting edge and the cutting edges in a pair are diametrically opposed to one another about a pair axis. Each cutting edge of a pair faces a single rotary direction along a pair circle, and for each pair of cutting regions the cutting edges have cutting profiles that are not identical to one another. In a toolholder assembly utilizing this arrangement, the cutting edges of a pair protrude beyond the perimeter of the toolholder.

Abstract: Cutting inserts are assembled around the periphery of a holder of a tool by respective fastening screws. Each insert is seated against a support surface, and its respective fastening screw passes through a center hole in the insert and is threaded into a mounting hole formed in the support surface. The mounting hole is oriented non-perpendicularly to the support surface, whereby the fastening screw forms an angle with the axis of the insert's through-hole and is more accessible to a screwdriver. The through-hole has a conical or spherical portion which supports a spherical head of the fastening screw.

Abstract: A hand-operated toolholder for a chisel (1) and including a holding member for operating a chisel and having a protection flange at its end facing in a direction opposite to an operational direction (B), a tubular guide (2) for axially guiding the chisel (1) and received in the holding member (3), and a locking mechanism (6) cooperating with the tubular guide (2) for retaining the chisel in the guide.

Abstract: A cutting tool having replaceable indexable cutting insert retained in insert pockets. Each insert pocket has a base wall and first and second rear sidewall sections. A generally circular recess having a peripheral wall extends downwardly from the base wall. The cutting insert comprises an upper surface, a side surface and a lower surface from which a cylindrical protrusion extends downwardly. A first abutment surface located on the first rear sidewall section abuts a first support surface located on the side surface of the cutting insert, a second abutment surface located on the second rear sidewall section abuts a second support surface located on the side surface of the cutting insert, and a third abutment surface located on the peripheral wall of the recess abuts a third support surface located on the cylindrical protrusion of the cutting insert.

Abstract: Cutter plates (19) with an approximately cube-shaped base body have been created, in particular for finish-milling of a crankshaft (5). At the edge of its cover surface, the base body is provided with a hump or protrusion, which can be embodied rib- or strip-shaped, has a cutting edge each on its front and back and adjoins the neighboring lateral surface. This cutting edge is a component of the main cutting edge (33) adjoining the cover surface. A corresponding protrusion (29) is provided on the lower end of the lateral surface (27) and adjoins the end of the cover surface (22) remote from the protrusion (28). In this case the lateral surface (27) is preferably inclined in such a way that it terminates flush with the protrusion (29) without forming a concave surface area with it.

Abstract: A cutting tool with a cutting tool holder and a plurality of replaceable indexable cutting inserts releasably attached to the holder. The holder has seats located about the circumference of one end of the holder for mounting of the cutting inserts. The seats are oriented with respect to the central axis of the tool holder such that not all seats have the same orientation, and this change in orientation allows greater use of the cutting edge of each insert.

Abstract: A rhombic cutting insert includes cutting edges merging with each other at a nose part disposed at a diagonal acute-angle corner of an upper face of the insert. The cutting edges each form convex-curved shapes and are each inclined with respect to a mounting face of the insert. The cutting edges each include linear sub-cutting-edges, disposed in the vicinity of the nose part, forming a substantially right angle therebetween. Rake faces are formed on the upper face of the insert and each have positive rake angles and twisted-inclined surfaces. The insert is mounted on a tool part. One cutting edge serves as a peripheral cutting edge having a sub-cutting-edge disposed substantially parallel to an axis of the tool part, and the other cutting edge serves as a facing cutting edge having a sub-cutting-edge disposed substantially perpendicular to the axis of the tool part.

Abstract: A cutting tool has at least one insert receiving pocket with a cutting insert retained therein. The insert receiving pocket has a base wall and a side wall transversely directed to the base wall with a circular recess having a peripheral wall extending downwardly from the base wall. A threaded bore extends downwardly from the lower wall of the recess. The cutting insert has an upper surface, a lower surface and a cylindrical protrusion having peripheral surface extending downwardly from the lower surface. A through bore extends through the cutting insert from the upper surface. A retaining screw passes through the through bore and threadingly engages the threaded bore with the peripheral surface abutting the peripheral wall and with the lower surface abutting the base wall.

Abstract: A cutting insert for a metalworking operation includes a polygonal body of hard wear resistant material. The body has a top surface and a bottom surface, and therebetween a peripheral wall including adjacent first and second wall portions. The intersection of the first wall portion and the top surface forms a first cutting edge, and the intersection of the second wall portion and the top surface forms a second cutting edge. The first cutting edge and the second cutting edge meet to form a high point which is adapted to engage a workpiece first during the metalworking operation. In one embodiment, the top surface of the cutting insert has a topography that promotes chip control. The topography includes a plain adjacent to the cutting edges, and a plateau on the plain, which is, located inward from the cutting edges. The plateau is elevated relative to the plain and has a sloped side.

Abstract: A multi-component bit for a rotational cutting tool such as a router or shaper; the bit having adjustable blades, thereby enabling repositioning of worn cutting blades, thus compensating for cutting edge wear to maintain a reproducible depth of cut, and having replaceable blades, thereby enabling removal of damaged or chipped blades and substitution with a clean, sharp edge, thereby preventing the total loss of a bit and extending the life thereof.

Abstract: A cutting insert includes an upper, lower and side surfaces and at least one leading cutting edge and a trailing wiper edge formed at an intersection of the upper surface with the side surface. A corner separates the leading cutting edge from the trailing wiper edge. The top surface includes a plurality of planar rake surfaces that extend inwardly and downwardly toward a seating surface of the insert. The top surface also includes a plurality of chip deflecting surfaces extending inwardly and upwardly toward the seating surface to form a transition zone between adjacent rake surfaces. The rake surfaces form a land angle with respect to a line perpendicular to the leading cutting edges. Additionally, a back wall surface extends upwardly from the rake surfaces to the seating surface to form a transition zone between the rake surfaces and the seating surface.

Abstract: The cutter holder (1) has, on the one hand, parallel fixed fingers (7) equipped with a groove (15) and, on the other hand, moving locking fingers (10) of which the end (16) is preferably conical. The milling cutter (6) has at least one flat annular part pierced, on the one hand, with fixing holes and, on the other hand, with locking holes which are slightly angularly offset with respect to the locking fingers in a direction which is the opposite to the direction of rotation of the cutter. Once the cutter has been fitted over the fixed fingers and engaged in the grooves (15), engaging the locking fingers in the locking holes has the effect of locking the cutter on the fixing fingers.

Abstract: A cutting insert has an insert body with at least one pair of cutting regions. Each cutting region is comprised of a cutting edge and the cutting edges in a pair are diametrically opposed to one another about a pair axis. Each cutting edge of a pair faces a single rotary direction along a pair circle, and for each pair of cutting regions the cutting edges have cutting profiles that are not identical to one another. In a toolholder assembly utilizing this arrangement, the cutting edges of a pair protrude beyond the perimeter of the toolholder.

Abstract: A cutting insert includes a body formed of sintered powder, with a center hole extending through the body for receiving a fastening screw. The center hole includes a cylindrical portion. The body includes two side surfaces extending downwardly from respective main cutting edges of the insert. A recess is formed in each side surface and extends to the bottom of the body. Each recess has a length longer than the diameter of the center hole. Preferably, the length of the recess is 120% of the diameter of the center hole.

Abstract: A cutting insert includes a body formed of sintered powder, with a center hole extending through the body for receiving a fastening screw. The center hole includes a cylindrical portion. The body includes two side surfaces extending downwardly from respective main cutting edges of the insert. A recess is formed in each side surface and extends to the bottom of the body. Each recess has a length longer than the diameter of the center hole. Preferably, the length of the recess is 120% of the diameter of the center hole.

Abstract: The T-slot milling cutter disclosed employs an indexable insert having two alternative edge surfaces which serve alternatively as the rake face and rear abutting face of the insert which transfers the cutting force to the rear wall of the insert pocket of the cutter. The alternative edge surfaces comprise three facets, once central to the surface and the other two receding from the central facet at equal angles thereto. They serve primarily to wedge the insert into mating angular surfaces in the rear wall of the insert pocket to secure the insert against dislodgement when held in the pocket by the customary attaching screw and, by their obliquity to the cutting direction, improve the cutting action when serving as the rake face.

Abstract: A rotary cutting tool with a holder body rotating about a central axis on which at least two cutting blades are mountable which have at least one cutting edge each and successively get in a metal-cutting engagement with a workpiece when the holder body rotates while simultaneously undergoing a linear forward feed, wherein the cutting blades are adapted to be advanced to a predetermined milling depth wherein the cutting edge of one cutting blade is disposed in an offset relationship from the cutting edge of the other cutting blade so that different areas of the cutting edges get into engagement with the workpiece and each cutting edge makes a partial contribution to the predetermined milling depth.

Abstract: A cutting knife arrangement employs a plurality of cutting knife inserts mounted on a common circular cylinder. Cutting knife inserts are mounted on a holder device secured to the outer periphery of the cylinder. The cutting knife inserts have a rectangular cross-section with each corner edge comprising a cutting edge. By indexing the cutting knife insert, different cutting edges of the same insert can be presented for use in a cutting operation.

Abstract: A cutting tool with a cutting tool holder and a plurality of replaceable indexable cutting inserts releasably attached to the holder. The holder has seats located about the circumference of one end of the holder for mounting of the cutting inserts. The seats are oriented with respect to the central axis of the tool holder such that not all seats have the same orientation, and this change in orientation allows greater use of the cutting edge of each insert.

Abstract: A tool for material-removing machining of workpieces is proposed that has at least one blade plate having an active cutter, which blade plate can be firmly mounted on the tool by means of a clamping lug. The tool is distinguished in that the blade plate (1; 1′) on its side edge (25) opposite the active cutter (13) has a wedge-shaped shoulder (27) which-starting from the front side (15) of the blade plate (1; 1′) on which lies the clamping lug (37)-broadens in the direction of the back side (29).

Abstract: The cutting fluid distribution system disclosed is one in which the cutting fluid passages which carry the cutting fluid from a pressurized source to the cutting bits of a rotary milling cutter are incorporated into the cutter in a way to be formed in large part by the mere assembly of the constituent elements of the cutter.

Abstract: A tool for removing material from a workpiece includes a tool body equipped with at least one roughing head and at least one finishing head. The finishing head includes a holder containing at least first and second finishing inserts. The first finishing insert has a cutting edge which extends a distance F1 from the tool body. The second finishing insert has a cutting edge which extends a distance F2 from the tool body. The distance F1 is less than the distance F2.

Abstract: The cutting fluid distribution system disclosed is one in which the cutting fluid passages which carry the cutting fluid from a pressurized source to the cutting bits of a rotary milling cutter are incorporated into the cutter in a way to be formed in large part by the mere assembly of the constituent elements of the cutter.

Abstract: Disclosed is a “nest” or seating element for tangentially-mounted “on-edge” cutting inserts for face mills which shares a peripheral pocket of the face mill with the cutting insert, and which facilitates the adjustment of the cutting insert it supports by virtue of its resilience in the axial direction of the face mill.

Abstract: The T-slot milling cutter disclosed employs an indexable insert having two alternative edge surfaces which serve alternatively as the rake face and rear abutting face of the insert which transfers the cutting force to the rear wall of the insert pocket of the cutter. The alternative edge surfaces comprise three facets, once central to the surface and the other two receding from the central facet at equal angles thereto. They serve primarily to wedge the insert into mating angular surfaces in the rear wall of the insert pocket to secure the insert against dislodgement when held in the pocket by the customary attaching screw and, by their obliquity to the cutting direction, improve the cutting action when serving as the rake face.

Abstract: The present invention provides a replaceable cutting insert for use in a cutting tool. The cutting insert has a recess with flat and non-coplanar side surfaces on either side of the recess. The cutting insert is retained in an insert pocket of the cutting tool by three-point contact between contact edges of the pocket and points on the side edges of the recesses on two adjacent side surfaces of the insert.