Abstract: A positional adjusting mechanism for a cutting insert in a tool for chip removing machining, preferably a milling cutter. The positional adjusting mechanism includes a hole formed in the tool body adjacent to the cutting seat which receives the cutting insert. A slotted bushing is mounted in that hole. An adjusting screw is received in the bushing to expand an upper end of the bushing. In the mounted state of the bushing in its hole, contact occurs between an upper part of the bushing and a support surface of the tool body which urges the bushing laterally in its hole to eliminate lateral play and thus stabilizes the bushing.

Abstract: A cutting tool has an adjusting mechanism for a cutting insert. The adjusting mechanism includes a wedge element in the form of a conical head on a set screw, as well as a sleeve mountable in the base body of the tool. Two jaws are included in the sleeve, a first one of which is wider than the second and has two rearwardly directed pressure surfaces for cooperation with two secondary support surfaces in the base body. A front surface on the first jaw is always kept pressed against a rear surface on the cutting insert, whereby the cutting insert is kept in a basic position. When the cutting insert is to be finely-adjusted, the second jaw is activated by tightening the set screw, whereby the second jaw supports itself against the base body, and then the first jaw is set in motion forwards in order to push out the cutting insert axially in fine steps.

Abstract: A rotatable cutting tool, e.g., a milling cutter, includes a rotatable base body and a cutting insert, which in addition to two opposite side surfaces has front and rear end surfaces. For axial fine-adjustment of the cutting insert, a set screw is arranged that is located in an area behind the cutting insert and inclined at an obtuse angle to a side surface of the cutting insert. During an unscrewing of the set screw, it presses against the rear end surface of the cutting insert with the purpose of moving the cutting insert in the direction axially forwards, whereby the screw, due to the obtuse angle, is centrifugally secured by means of the actual cutting insert.

Abstract: A hollow milling tool which is adjustable through a wide range of cutting diameters while maintaining a constant radial rake angle, constant axial rake angle, constant axial clearance angle, and a constant radial clearance angle. The tool includes at least one slot, and preferably three or more slots, disposed at a negative axial rake angle with respect to the centerline of the tool for receiving and mounting a cutting member. Each slot intersects the front axial face of the tool at a location ahead of a plane including the centerline of the tool. A cutting member is a holder for a formed carbide cutter insert. The insert is mounted in the holder such that the forward face of the insert forms an angle with the forward surface of the insert holder which is at least equal and opposite to the negative axial rake angle of the slot so that the face of the insert has either zero or positive axial rake.

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: An automatic machine tool includes a stationary tool holder assembly in combination with a rotating work piece. The tool insertion opening within the tool holder is off-centered a predetermined distance from the center line to allow rotational positioning of the tool within the tool opening without requiring removing the tool holder from the assembly.

Abstract: A thread-milling cutter includes a cutting head with cutting insert pockets and thread-milling inserts received in respective pockets. An attachment portion integral with the cutting head is received in a drive coupling. Each insert includes a recess forming an abutment surface that is engaged by a screw to secure the insert in the pocket. The abutment surface is inclined in a manner causing the screw to push the insert deeper into the pocket.

Abstract: The instant invention is directed to an adjustment device for a multiple insert cutting tool with adjusting elements using a wedge to adjust the position of an insert in a tool body pocket through an intermediate component having expansion elements. The intermediate component is disposed in a cavity which is at least partly contiguous with a pocket containing an insert. The intermediate component engages the insert to be adjusted and, when expanded, adjusts the position of the insert.

Abstract: The invention concerns an attachment (1) comprising a radial sliding track (103) for each slide (2), recessed in the attachment body. Two semicircular plates (4, 5) maintain the slides in the sliding track (103) and guide them. The slides are locked by screws (18, 19) operating by deforming the corresponding semicircular plate (4, 5). The displacement of a slide is obtained by a micrometric screw (12) operating on a nut integral with the slide.

Abstract: A milling tool includes a number of peripheral recesses, each of which accommodates an insert-carrying cartridge, and a clamping wedge which is tightenable by of a clamping screw. The clamping wedge includes two separate contact surfaces. One of the contact surfaces presses the cartridge into its respective recess. The other contact surface presses the insert into its seat in the cartridge while simultaneously pressing the cartridge into the recess.

Abstract: A cutter head of a milling tool is equipped with machining elements which can be fastened in respective recesses of a rotary body by one or more clamping wedges. On the rear side of the individual machining element there are serrations which co-operate with serrations formed in a rear wall of the recess. The serrations extend generally parallel to an axis of rotation of the cutter head. A bottom wall in the recess is divided into a plurality of wall parts which are separated by a first axially facing abutment surface against which an axially facing a second abutment surface on the machining element can be engaged, to define an exact initial mounting location for the machining element.

Abstract: A chamfer forming head for paper roll comprising an inner threading hole to receive a rotating head thereof is provided. The front portion of said forming head is provided with an annual recessed surface having the same diameter of a paper roll to be machined. The forming head further comprises a plurality of radial holes disposed equiangularly around the peripheral of the forming head. The radial holes are communicated with the annular recessed surface. Each of the radial holes is received and disposed with a pressing tool which comprises an end portion, a cutout, a pressing surface, an aligning cutting slot and a contacting end. The pressing tool can be readily adjusted within the radial hole such that the contacting end of the pressing face can be raised to a level which is higher than the annular recessed surface. A locking element is provided and disposed within said radial hole such that the pressing tool can be locked up when the pressing tool is adjusted.

Abstract: A face milling cutter comprises a holder adapted to be rotatable about an axis. A plurality of first cutting inserts, and a plurality of second cutting inserts are mounted in respective pockets of the holder. The first and second inserts alternate circumferentially with one another. The first and second inserts are identical and include a center hole for receiving a fastener screw. The central hole of the first inserts are oriented orthogonally relative to the center hole of the second inserts, whereby the first inserts are turned by about 90 degrees relative to the second inserts. The axial relationship of the second inserts relative to the first inserts is determined by shims disposed between the holder and respective ones of the second inserts.

Abstract: A cutting insert is formed with a substantially hexagonal cutting face having six sides forming three main cutting edges and three auxiliary cutting edges alternating with the main edges. Each of the main cutting edges is substantially straight and each of the auxiliary cutting edges is outwardly convex. A plateau is on the face inward of the cutting edges and defines a plane. Respective free surfaces each extend generally perpendicular to the plane from the cutting edges and meet at corners between the edges. The main cutting edges are usable for roughing and the auxiliary cutting edges for finishing. The insert is formed on the face along an entire length of and parallel to each of the cutting edge with a respective groove.

Abstract: Both a device and method for adjusting the position of a cutting insert relative to the body of a cutting tool such as a milling cutter are provided. The device includes a cantilevered wall integrally connected to the tool body, that forms a portion of the pocket in the tool body that supports a side of the insert, and a wedge mechanism for elastically flexing the cantilevered wall to adjust the position of a cutting edge of the insert relative to the tool body. The wedge mechanism may take the form of a screw threadedly engaged to the tool body that has a conical head engaged against the cantilevered wall such that when the screw is turned, the conical wedge formed by the screw head flexes the cantilevered wall a small distance. The device advantageously allows fine adjustments to be made in the position of the cutting edge of an insert by the simple turning of a single screw.

Abstract: An adjustment mechanism for adjusting an insert pocket wall's abutment surface in order to alter the location of an insert mounted in the pocket. The adjustment mechanism includes an adjustment screw and adjustment ball located in an adjustment bore. The adjustment ball is located in the vicinity of the pocket wall and on tightening the adjustment screw the adjustment ball is forced against the pocket wall. The force applied by the adjustment ball deforms the pocket wall in the region of contact between the adjustment ball and the pocket wall resulting in the required adjustment of the abutment surface.

Abstract: A milling tool (1) has at least one insert seat (14) which is adjustable in the axial direction. Provided for this purpose as an insert seat is a cartridge (47) which is received in a groove (41) but does not have a supporting face for the bottom face of the insert (25). The insert (25) consequently rests on a side wall (42) of the groove (41). As a result, the insert seat (14) is formed by a combination of the plane face of the tool body (2) and bearing faces (51, 52) of the cartridge (47). This achieves a particularly small installation space (close tooth spacing) and rigid mounting of the insert (25).

Abstract: A milling tool includes a supporting body that is rotatable around a central axis, and is being equipped with detachable cutting inserts. Each insert has two cutting edges extending at a given setting angle relative to each other. One of the cutting edges is located in a reference plane oriented perpendicular to the axis of rotation. In order to directly or indirectly connect each cutting insert with the supporting body a pair of serrated surfaces are provided, each of the serrated surfaces consisting of oblong, parallel ridges that are separated by grooves. A first one of the serrated surfaces is located at an inner side of the cutting insert, and the other one being directly or indirectly associated with the supporting body. The ridges and the grooves of the serrated surfaces are relative to the reference plane by an angle that constitutes one-half of the setting angle.

Abstract: A rotary metal-cutting tool includes a tool body and a cartridge carrying a cutting insert that is adjustable in relation to the tool body. The adjustment is accomplished by providing a serration on one side surface of the cartridge and a correspondingly curved recess in the tool body adjacent the serration for the receipt of a key element. The key element has teeth engageable with the serration such that rotation of the key produces adjustment of the cartridge and insert.

Abstract: A ball nose cutting tool for mounting within a shank-receiving socket of a powered rotatable spindle. The tool includes an elongate and cylindrical shaped tool holder for insertion within the socket of the spindle and a generally rounded upper end. A plurality of insert receiving cavities are formed within the upper end of the tool and a plurality of insert bits are seatingly engaged within the individual insert cavities via threaded openings which are formed in both planar inner side walls defining the cavities and the seatingly engaging drill bits for receiving a screw fastener. An arcuate and curved cutting edge extends from opposite ends of the planar bottom surface and planar end surface and defines a cutting zone extending from the outer periphery to the center of the tool holder.

Abstract: An adjustable lead angle toolholder is disclosed for selectively cutting a workpiece at 30.degree., 45.degree., or 60.degree. angles. The toolholder may have a rotatable, cylindrical endmill body that includes a radially-oriented wall or a stationary, square shank having a planar wall on its distal end. The toolholder further includes a cutting insert having at least one linear cutting edge, and a mounting assembly for pivotally mounting the insert onto the wall of the endmill body such that a lead angle of the linear cutting edge is adjustable with respect to the outer periphery of the toolholder body. The mounting assembly includes a plate-shaped insert holder, and a fastener for pivotally connecting the insert holder to the wall of the toolholder body. A locking screw secures the plate-shaped insert holder at a selected pivoted position on the wall of the toolholder body. The invention allows a single toolholder to cut or chamfer a workpiece at different angles.

Abstract: A cutting mill kit includes a basic body formed with a plurality of peripheral recesses which receive respective cassettes and cutting inserts and an annular support element which is provided with at least one formation receiving a respective gib. The gib provides an axial support for the cassette and has a width lesser than a width of the cassette.

Abstract: A cutting tool assembly including a cutter body having a cutting unit receiving pocket for releasably receiving a cutting unit with an operative cutting edge and an abutment surface remote therefrom. An elongated bore adapted for receiving an adjustment device is formed in the cutter body, the bore opening into the receiving pocket adjacent the abutment surface. The adjustment device includes an elongated tubular adjustment member having a longitudinally directed adjustment surface inclined with respect to its longitudinal axis, and an elongated adjustment screw initially slidingly extending through the adjustment member. The adjustment member is secured on the adjustment screw such that upon screwing the adjustment screw in a given direction, the adjustment member pushes the cutting unit outward.

Abstract: A cutting tool is disclosed having an annular array of V-shaped pockets formed in the body thereof for receiving complimentary shaped tool cartridges. Threaded fasteners are provided to selectively retain one of the cartridges in each of the pockets.

Abstract: A cartridge-type milling cutter is provided having a cartridge mounting mechanism that resists the centrifugal load applied to the cartridges at high rotational speeds. The milling cutter includes a generally cylindrical cutter body, at least one replaceable tool cartridge having a trailing face, and a leading face having a cutting insert for cutting a workpiece, and a mounting mechanism for detachably securing the tool cartridge onto the cutter body. The mounting mechanism includes a recess in the cutter body for receiving the cartridge that includes a radially canted wall for providing dovetail-type resistance to radial movement of the cartridge, and at least one compressively loaded set screw in the cutter body for compressively engaging the leading face of the cartridge in order to seat and retain it within the recess. During the operation of the cutter, the centrifugal load is substantially borne by the combination of the radially canted wall and the set screw.

Abstract: A milling cutter tool for chip-breaking machining comprises a rotatable milling cutter body (1) and a plurality of cutting insert-carrying cassettes (4) which are fastened in the cutter body by screws (6,7). The screw holes of the cassette are somewhat elongate in order to enable an axial fine-adjustment of the cutting edges. This fine-adjustment is accomplished by turning an eccenter tap (8), for instance by sticking a hexagonal key through a hole in the cassette, which hole leads to the head of the eccenter tap.

Abstract: A router bit includes a generally elongate body portion, a shank portion for mounting to a rotating machine, and a knife support head disposed oppositely from the shank portion. The knife support head includes a pair of recesses formed therein to accept interchangeable knives which are adjustable longitudinally to compensate for knife wear and loss of diametrical dimension due to resharpening of the knives.

Abstract: A milling cutter body of basically cylindrical shape has a plurality of grooves of a circular cross-section each of which intersects the envelope surface of the cutter body. These grooves receive insert-carrying cartridges of a corresponding circular cross-section. Each cartridge is adjustably rotatable about an axis of its respective groove and is also axially adjustable along such axis. The groove axes are not parallel to the axis of rotation of the cutter body but are inclined to it. A precise positioning of the parallel land angle of the cutting edges is obtained by turning the cartridge about the groove axis and/or axially adjusting the cart ridge along that axis.

Abstract: A cutting insert is mounted in a pocket of a holder so that rotation of an adjustment member mounted in the holder produces rotation of the insert about a center axis. The insert includes top and bottom surfaces interconnected by a side surface. The side surface includes a curved portion engaging side support surfaces of the holder, a pair of planar surfaces extending from respective ends of the curved portion, and a portion extending from one of the planar surfaces to define a parallel land. The curved portion engages the adjustment member so that rotation of the latter produces a fine adjustment of the parallel land.

Abstract: An adjustable cutting assembly includes a wedge member extending transversely through a clearance opening in a sleeve portion of a cutting element adapter that is slidable supported on a rotary arbor. Radial motion of the wedge member can be used to shift the adapter axially on the arbor, thereby adjusting or controlling the depth of cut of the cutting element. An axially oriented locking bolt is used to clamp the wedge member between opposed guide surfaces on the adapter and arbor, so that during machining operations the tool assembly has the rigidity of a non-adjustable tool assembly.

Abstract: Round indexable cutting inserts are locked in fixed angular positions in the pockets of a milling cutter by conically tipped screws which seat in recesses formed in the back faces of the inserts. By turning the screws, their tips may be retracted to inactive positions to enable conventional polygonal inserts to be used in the pockets.

Abstract: A mechanized disc flaker for producing curled wood flakes having a rotatable disc plate, and one or more cutting knives mounted to the disc plate so as to provide for a slight "rake angle" defined in accordance with the invention as the angle made between the tool face and a plane perpendicular to the direction of tool travel. In a preferred embodiment, the apparatus includes rotatable and removable knife holders which permit the rake angle and the "cutting angle", defined in accordance with the invention as being the angle the cutting edge of the knife makes with the grain of the wood, to be modified to yield curled wood shavings having different geometries and characteristics. The preferred method of practicing the apparatus involves using a work piece having a certain moisture content which is directed against the work surface of the disc flaker using appropriate pressure all to provide for wood curls of desirable characteristics.

Abstract: A throughaway milling cutter is disclosed: a cutter body rotatable about an axis; at least one recess formed at a front face of the cutter body and having a bottom wall and side walls; an inclined face formed at the bottom wall and inclined about the front face; a cartridge inserted in the recess movably along the inclination direction of the inclined face; a wiper cutting insert removably mounted to the cartridge and having a wiper cutting edge generally parallel to a plan perpendicular to the axis of the cutter body and a front flank face disposed adjacent to the wiper cutting edge; a wedge inserted between the side wall and the cartridge and capable of moving the cartridge along the inclination direction of the inclined face; and a means for clamping the cartridge to the recess.

Abstract: A single point adjustable triangular carbide cutting insert holder designed to clamp the cutting insert with maximum possibility for regrind or grinding for secondary operations. The insert holder is arranged for use in a milling machine and is collet-mounted by its shank. The jaw clamps can be removed for placement of the cutting insert between them, and are then refitted in the cavity where they are tightened by adjustment of a screw. As the screw is tightened, the jaw clamps are drawn further within the cavity, and are rigidly clamped against the cavity walls by frictional contact. When partially released, the jaws can be rotated within the cavity, enabling direct adjustment of the cutting insert rake and relief angle as desired. The cutting insert is seated between the jaw clamps on a seating cam mounted at an edge of the inner jaw face, such that the exposed portion of the cutting insert is a maximum.

Abstract: A holder for rotating cutting knives includes a cylindrical holder including a longitudinal groove and a blade having a cutting edge and an opposed edge separated from the cutting edge by a first contact face. A gib assembly is provided for holding the blade in the groove of the holder, and includes a gib movable within the groove between a blade insertion position and a blade securing position. The gib has a second contact face that engages the first contact face of the blade when the gib is moved to the second position, and one of the first and second contact faces is provided with at least one longitudinal groove and the other of the first and second contact faces includes at least one longitudinal ridge which mates with the groove when the gib is in the second position in order to prevent the blade from slipping out of engagement with the gib means.

Abstract: A face mill having one or more cartridges for adjustably supporting cutter inserts on the end face of the rotating tool body. Each cartridge has a convex arcuate surface seated against a concave arcuate seat surface formed on or in the milling tool body. A torsion bar is integrally extended from the cartridge parallel to the axis of the concave seat surface. Also, a manual adjustment screw is located perpendicular to the axis of rotation of the cartridge for applying an adjustment force to the cartridge in opposition to the action of the torsion leaf spring. The torsion bar applies a pre-load force to the cartridge. The manual adjustment screw exerts an opposing force that rotates the cartridge to a desired position for proper orientation of the associated cutter insert.

Abstract: A face mill having one or more cartridges for adjustably supporting cutter inserts on the end face of the rotating tool body. Each cartridge has a convex arcuate surface seated against a concave arcuate seat surface formed on or in the milling tool body. A torsion leaf spring is integrally extended from the cartridge parallel to the axis of the concave seat surface. Also, a manual adjustment screw is located perpendicular to the axis of rotation of the cartridge for applying an adjustment force to the cartridge in opposition to the action of the torsion leaf spring. The torsion leaf spring applies a pre-load force to the cartridge. The manual adjustment screw exerts an opposing force that rotates the cartridge to a desired position for proper orientation of the associated cutter insert.

Abstract: The present invention relates to a milling cutter having a cutter body and a plurality of replaceable tool cartridges circumferentially spaced about the outer periphery of the cutter body. An adjustment mechanism permits adjustment of the tool cartridges in the direction parallel to the axis of rotation of the cutter body. The adjustment mechanism includes an adjustment screw threaded into a corresponding bore in the cutter body. The head of the adjustment screw projects into an inclined throughbore in the tool cartridge. When the adjustment screw is turned, the head of the screw bears against the inner surface of the throughbore causing the tool cartridge to be axially displaced. A locking screw is tightened to secure the tool cartridge in place after it has been adjusted.

Abstract: A mechanized disc flaker for producing curled wood flakes having a rotatable disc plate, and one or more cutting knives mounted to the disc plate so as to provide for a slight "rake angle" defined in accordance with the invention as the angle made between the tool face and a plane perpendicular to the direction of tool travel. In a preferred embodiment, the apparatus includes rotatable and removable knife holders which permit the rake angle and the "cutting angle", defined in accordance with the invention as being the angle the cutting edge of the knife makes with the grain of the wood, to be modified to yield curled wood shavings having different geometries and characteristics. The preferred method of practicing the apparatus involves using a work piece having a certain moisture content which is directed against the work surface of the disc flaker using appropriate pressure all to provide for wood curls of desirable characteristics.

Abstract: A face milling cutter for holding a plurality of cemented tool bits for rotation about an axis and an associated method utilize a body of material defining a shank portion securable within a rotatable spindle of a machine tool for rotation about an axis and an insert-accepting body portion within which the tool bits are supported. The insert-accepting body portion is generally cylindrically in shape and joined to the shank portion so that the longitudinal axis of the body portion coincides with the axis of rotation of the cutter. Furthermore, the body portion defines a plurality of radially outwardly-opening recesses extending along the length of the cylindrical periphery of the body portion. Each recess is adapted to accept the shank of a tool bit so that when operatively positioned therein, the tool bit shank extends generally longitudinally of the cutter body portion.

Abstract: A rotary milling tool comprises a cutter body, a plurality of cassettes mounted in respective recesses formed around an outer periphery of the body, and a plurality of fasteners applying retaining forces to respective cassettes. Each retaining force comprises a radial inward component and a component directed opposite the direction of rotation of the body. The radial inward component wedges the cassette against first and second radially outwardly divergent walls of the recess. The other component wedges the cassette against the second wall and a third wall which are forwardly convergent.

Abstract: An indexable insert end mill having multiple triangular inserts spaced axially in overlapping cutting relation in isolated pockets arranged along a gradual helical angle extending axially of the end mill such pattern of axially spaced cutters being repeated at three 120.degree. circumferentially spaced positions on the periphery of the body. In a typical case the three helical rows of inserts each has five inserts equally spaced axially in overlapping relation and circumferentially in 40.degree. increments so that three effective teeth are provided at each of the five axial positions.

Abstract: An end milling cutter has a cutter head with a pair of opposed slots extending longitudinally inwardly from the end face and generally radially from the lateral surface to a central cylindrical bore. Each slot forms insert-supporting shoulders which extend from the core to the lateral surface of the head. A triangular cutting insert is received in each slot and is supported on one side by the shoulders. A pressed dimple extending inwardly of the cutter head from the end face, engages and supports a second side of each of the inserts such that the cutting edges thereof are at a prescribed diameter.

Abstract: A machine tool essentially comprises a chuck or workpiece holding assembly (S) for rotating a workpiece (W) about a revolution axis (X) of a surface to be obtained on the workpiece, and a rotary composite tool (22) having a series of elementary tools (32.sub.1 . . . 32.sub.6) located at angularly spaced apart positions about an axis of rotation for the composite tool; each elementary tool has respective front cutting edges (40) substantially radial relative to such an axis of rotation. The axis of rotation for the composite tool is orthogonal to a plane tangent to the surface to be obtained on the workpiece and the composite tool is movable relative to the workpiece parallel to such a plane. The consecutive front cutting edges are arranged on the composite tool at decreasing spacings from its axis of rotation, and at decreasing spacings from the workpiece surface. The farthest front cutting edge from the axis of rotation is also the farthest cutting edge from the tangent plane.

Abstract: A drill bit has a formation engaging face from which there extends a plurality of stud assemblies having a diamond cutting face thereon. Each of the stud assemblies are mounted within a socket by a close tolerance press fit. A reduced diameter rearwardly extending passageway leads from the rear of the socket back up to the face of the bit so that when the diamond face of the stud assembly becomes worn, a tool can be extended through the passageway to the rear of the socket and into contact with the stud assembly to force the stud assembly from the socket. The stud assembly is then rotated a few degrees to present a new cutting edge to the formation, and pressed back into the socket, thereby returning the drill bit to like new condition.

Abstract: A rotary cutter for holding replaceable cutting inserts includes a cylindrical bore having a generally radially-disposed axis which makes an acute angle with the insert cutting face, thus forming a wedge-shaped portion in the holder between the insert-supporting face and the axis of the bore. A cylindrical locking member is received in the bore. An insert-retaining locking screw threadedly engages the locking member. The wedge-shaped portion of the holder causes increased tension in the locking screw during rotation of the cutter, which insures insert retention at high rotational speeds.

Abstract: A throwaway tip and a shank both for use in ball end mills, wherein the tip is a throwaway tip of an approximately flat plate-shape, provided at its side face with a convex cutting edge starting from the center portion when viewed from the bottom and a straight-lined cutting face following thereafter, the ridgeline of these cutting edges being formed connecting a bottom face cutting edge, a circumferential side cutting edge, and a top face cutting edge when viewed from the top. Adjoining the top face cutting edge is an inclined fixing side face for use in preventing the tip from floating up. The shank which is to bear the throwaway tip is provided with an inclined tip-fixing wall corresponding to the above-mentioned fixing side face of the tip.

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

Abstract: A milling cutter having blades retained against seating surfaces in cutter body slots by resilient leaf springs engaging the blade edge surface that is opposite the seating surface for the blade. The seating surfaces are each part of a tapered wedge element and a threaded adjuster extending through the wedge element into the cutter body, parallel to the wedge seating surface.

Abstract: A cutter insert of the indexable type comprises a plate of a generally quadrilateral shape including a front face, a rear face and four side faces. The cutter insert has two peripheral cutting edges defined by two opposite side faces and the front face. A pair of notches are formed in two diagonal corners of the cutter insert, and the other two diagonal corners are chamfered to provide respective corner faces which define together with the front face a pair of end cutting edges.