Abstract: An indexable insert milling tool with a milling body which on the circumference comprises distanced chip spaces, in which insert seats for indexable cutting inserts are formed, and with fastening screws which can be screwed into a threaded bore in the insert seat for fastening the indexable inserts via a middle hole, wherein the insert seat comprises a first bearing surface extending roughly perpendicular to the threaded bore, against which the rear side of the indexable inserts bear and a second bearing surface on the inner side of the chip spaces, against which the indexable inserts laterally bear. The indexable insert on the rear side on the cutting edge sides comprise raised elongate support sections wedge-shaped in cross section with lower parallel distanced elongate support surfaces.

Abstract: A tool and method for cutting a seat in a setting of jewelry for receiving a gemstone having a crown, a girdle, and a pavilion. The tool has a cylindrical shank portion having a smooth outer surface and a bur cutting portion attached to said shank portion at one end for conjoint rotation therewith. The bur cutting portion has cutting surfaces disposed for rotation about a longitudinal axis of the shank portion and includes first and second generally conical cutting surfaces and a generally cylindrical cutting surface located between the conical cutting surfaces. The cutting surfaces are constructed to cut into the setting of the jewelry upon rotation of the tool about the longitudinal axis of the shank portion to form the seat in the setting. The notch that is cut has at least three distinct surfaces, each being complementary to a corresponding profile surface of the gemstone.

Abstract: A cutting tool including a cutting tool body having a peripheral surface formed with a plurality of recesses each adapted to receive an insert receiving cartridge. Each cartridge has transversely directed first and second side surfaces with an imaginary bisector plane therebetween defining a leading cartridge portion associated with the side surface and a trailing cartridge portion associated with the side surface. The leading cartridge portion includes a chip clearance wall and the trailing cartridge portion includes an insert receiving pocket with a cutting insert having a peripheral cutting edge which protrudes in respect of the peripheral surface. Each recess has leading and trailing surfaces converging away from the peripheral surface and against which abut the side surfaces of its associated cartridge received therein. Both the side surfaces are co-extensive with the leading and trailing surfaces.

Abstract: The invention relates to a process for the production of a milling tool for cutting machining, preferably of metals. The milling tool includes a holder part (2) for the fixation of the milling tool upon a rotating driving arrangement, and an insert carrying part which around its periphery is equipped with several detachable cutting inserts (23), each cutting insert being fastened in an insert seat, which at least partly is situated in a peripheral, insert-carrying milling tool portio (12). Each insert seat includes a bottom support surface (10) and a side support including at least one side support surface (9), a chip pocket (25) being provided in front of each insert seat in the direction of rotation. The side support of the insert seat at least partly is made by a ball-nose end mill (8). This brings about that the number of insert seats in a milling tool may be substantially increased.

Abstract: A three dimensional mill capable of plunging, ramping, circle interpolating and other milling processes while providing a finished surface not in need of finish grinding. The milling cutter includes cutting inserts of a modified design including flats separating rounded corners of a two radius design. Each insert also includes a rail that is secured to the milling cutter along a longitudinal surface that is radial to the axis of the milling cutter at any cross sectional plane.

Abstract: A high-speed milling cutter is provided that includes a hub rotatable about an axis, a plurality of radially extending arms, and a plurality of cutting inserts, each of which is connected to a distal portion of one of the arms. The arms are tapered with respect to both the horizontal and vertical planes in such a manner that centrifugally induced tensile stresses are substantially equal at all points between the proximal and distal ends. The cross-sectional area of each arm increases at each point radially inwardly so that the ratio of tensile strength to the amount of centrifugal force generated by the cumulative, peripheral mass of the arm at that point remains substantially constant throughout the length of the arm.

Abstract: A cutting tool insert holder apparatus comprising a milling cutter body with at least one flute and a clamp to secure the insert in the holder and dimensioned to be held by a metal cutting milling machine. The flute is disposed at one end of the body and comprises a pocket dimensioned to accept a rhomboid-shaped cutting insert having a top rake angle and a substantially flat surface in the clamping area, a threaded hole dimensioned to accommodate a clamp screw, a pivot cavity dimensioned to accommodate a pivot of a clamp, and dimensioned to allow tipping of the clamp.

Abstract: A cutting tool including a toolholder for releasably receiving a plurality of quadrilateral cutting inserts in which adjacent cutting inserts are partially nested for their greater compaction and whereby their operative cutting edges overlap so as to present an effectively continuous cutting edge. The cutting inserts each having upper and lower surfaces, a side surface associated with a cutting edge and a pair of opposite side surfaces directed transversely thereto, the insert having an upper and base insert edges defined by the respective intersections of the upper and lower surfaces and a first of the opposite side surfaces, at least one of the surfaces associated with the insert base edge having a recessed portion of varying depth relative to the upper insert edge along imaginary lines parallel to the major cutting edge in a bottom view of the cutting insert, the depth being maximal remote from the major cutting edge.

Abstract: Slot or track milling tool device wherein a number of inserts having an insignificant axial extension are arranged in seats at the peripheral portion of an essentially disc shaped tool holder body. The inserts, being of a per se known kind, have at least one abutment face arranged obliquely relative to the insertion direction of the insert. The abutment face in contact with an abutment portion at each seat of the tool holder body. Each such abutment portion being a tongue shaped portion integral with the tool holder body. For each tongue shaped portion, there is arranged a rotatable clamping device having a surface arranged in a cam or eccentric fashion. The rotatable clamping device is intended to displace the tongue shaped portions so that an abutment point thereon reaches an engagement with and remains in engagement with the obliquely rearwardly facing engagement surface of the insert.

Abstract: A deep groove, for example a groove in a rotor for a generator or turbine, can be formed in the rotor blank in only two sequential milling cuts, and wherein each milling cut, utilizing a single rotary milling cutter, carries out at the time both coarse cutting of the groove and finish cutting, for surface smoothing, of the coarse cut along the inner surfaces of the groove. The milling cutter carries cutter chips (22, 23, 25; 44, 46) retained against chip seats (27) in cutter chip cartridges (21, 210) wherein at least some of the cutter chips have at least one end cutting edge forming a main or coarse cutting edge (33, 35, 42; 45, 47) exposed from the respective cartridge and the tool body (13, 130) for main or coarse cutting. Some cutter chips located on the cartridges also have at least one fine or finish side cutting edge (36, 49) exposed for cutting.

Abstract: A machine for simultaneously milling and grinding a workpiece comprises milling and grinding wheels rotatable about respective first and second parallel axes, the second axis being offset radially with respect to the first axis. A single motor drives the milling and grinding wheels at different relative speeds. The grinding wheel is mounted to a hub which includes an axially flexible portion to enable the grinding surface to be axially adjusted. The milling wheel includes an array of milling cutters with a large gap formed between leading and trailing ones of the milling cutters to accommodate the offset grinding wheel. The radial spacing of the milling cutters from the axis of rotation of the milling wheel progressively increases from the leading milling cutter to the trailing milling cutter.

Abstract: It is an object of the invention to provide an economical milling cutter for T shaped groove.This invention is a milling cutter for T shaped groove comprising at least three cutting edge mounting seats distributed peripherally on a body one end flange of the milling cutter, on the first cutting edge mounting seat a first cutting edge for cutting remotest part from the cutting machine being mounted, on the second cutting edge mounting seat a second cutting edge for cutting nearest part from the cutting machine being mounted, on the third cutting edge mounting seat located between the first and second seats a third round or polygonal cutting edge being mounted, and the third cutting edge projecting radially outwardly from the rotation center line of the body between and from two portions cut by the first and second cutting edges.

Abstract: Apparatus including a saw mill cutter for removing risers or excess material from castings such as for engine blocks, cylinder heads, cam carriers, transmission housings and the like, with the saw mill cutter simultaneously cutting the riser from the casting body while milling the cut surface to form a finished and/or semi finished surface and with a method for utilizing such a saw mill cutter and forming such finished and/or semi-finished surface and with one form of the method including feeding the casting widthwise to the cutter such that it is cut and milled along its length.

Abstract: A cutting tool insert to fit in a holding body for mounting to a rotating machine spindle. The cutting tool insert has multiple faces with one face having several in line cutting edges, one behind the other.A vertical V-groove divides the second cutting edge. The cutting tool insert is symmetrical and is removable, turnable about 180.degree. and replaceable to the holding body.

Abstract: A cutting tool employing negative cutting inserts providing both high volume stock removal and a fine surface finish. The insert utilizes negative radial and positive axial rake angles and incorporates a lead angle of between about 30.degree. degrees to about 90.degree. degrees.

Abstract: In a rotary cutting tool for use with at least one cutting tip, a cutter body has its forward end whose outer periphery has mounted thereto the cutting tip. A chip suction device is arranged outwardly of an outer peripheral surface of the cutter body for drawing chips generated by the cutting tip. The chip suction device includes a generally cylindrical cover unit having a wall for covering the cutter body. The cover unit is supported by the cutter body for rotation relative thereto. A chip accommodating chamber is defined between an inner peripheral surface of the cover unit and the outer peripheral surface of the cutter body. A suction port unit is provided in the wall of the cover unit and communicates with the chip accommodating chamber. A chip guide unit is arranged at the forward end of the cutter body in facing relation to the face of the cutting tip for guiding the chips generated by the cutting tip to the chip accommodating chamber.

Abstract: A cutterhead for an industrial woodworking machine which is operable to incorporate a sufficient number of knife rows to permit a staggered tooth arrangement for noise reduction or, alternatively, to provide improved surface finish at higher feed rates without increasing cutterhead RPM. The cutterhead also provides for the generation of a variety of shapes when used with appropriately shaped individual cutting inserts. The cutterhead includes a cutterhead body having a cylindrical portion having a plurality of circumferentially spaced grooves for receiving a plurality of cutting inserts, a predetermined hole pattern in the cutterhead body for securing the cutting inserts in the grooves, and in the preferred embodiment elongated slots in the cutting inserts which permit lateral adjustment of the cutting inserts along the axis of the cutterhead. Profile shape adjustments are made through the use of a cam device.

Abstract: A milling cutter with a plurality of grinding inserts in a unique orientation to remove the machining marks of the roughing inserts and texture the surface to a consistently roughened flat finish.

Abstract: A cutter body (22, 22') has a slot (26, 26') opening onto its nominal outer cylindrical surface (24) and extending along a plane that intersects the cutter axis (X) at an acute axial rake angle (A). A flat cutter blade insert (40) with an elliptical polycrystalline diamond cutting edge (48) is secured in the slot (26, 26'). The insert (40) is positioned to produce a non-negative radial rake at each point along the cutting edge (48). Preferably, the cutter (20, 20') has a plurality of circumferentially spaced slots (26, 26') and inserts (40). The slots (26') may be arranged in a herringbone pattern to resist delamination of a workpiece. Preferably, the cutter relief angle varies along the insert (40) from a minimum at the leading end (50) to a value at the trailing end (52) equal to the minimum plus the angle between the radial lines of the cylinder (24) through the leading and trailing ends (50, 52), respectively.

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: A concaved saw blade for tree felling apparatus adapted to be rotatably actuated through its center. The blade is inclined relative to the ground and is moved forwardly in a horizontal plane towards the tree to be cut. Saw teeth are adapted to be removeably mounted on the periphery of a rotatable saw blade of the flat or concave type. The teeth per se are made of a square head and a shaft extending rearwardly. The shaft is adapted to slide in a sleeve axially welded on the periphery of the saw blade. The shaft is adapted to be mounted in the sleeve in four different positions so that the head which is square and has a concave front face can make use of each of the four cutting edges surrounding the head for cutting trees.

Abstract: A cylindrical cutter head comprises a cutter head body having a cylindrical surface which is centered on an axis and which is formed with a plurality of radially outwardly open main grooves extending parallel to the axis and each having relative to a normal direction of rotation of the body about the axis a leading flank and a trailing flank. These flanks are generally planar and converge radially outward. A disposable knife blade in each of the grooves is pressed against the trailing flank thereof by an outwardly tapered centrifugal wedge braced radially between the blade and the leading flank. Each groove is formed immediately forward of its trailing flank with a radially inwardly projecting groove extension. Thus wide regrindable blades can be fitted in the groove with their rear edges seated in the respective groove extensions.

Abstract: A cutting tool (10) of generally circular shape made by investment casting. Removable teeth (15) are secured in through-holes (14) in an annular support (13) and may be removed by removing locking nuts (18). The teeth (15) are angled transversely relative to the plane of the hub so that their respective cutting edges overlap to give a resultant cut wider than the annular support (14). The tool is particularly useful for grinding tree stumps or like and may be used on a stump grinder of the type described in U.S. Pat. No. 4,441,534.

Abstract: A cutting tool assembly of the type including a pilot holder and a cutter blade received in a transverse through slot in the pilot holder. The cutter blade is mounted in the transverse slot in the pilot holder in a manner to allow ready replacement of the pilot blade and in a manner to allow the cutter blade to self-align with respect to the central axis of the pilot holder to minimize the stress loading in the cutter blade and minimize blade breakage. In one embodiment, the cutter blade is mounted in the pilot holder by a cartridge which is received in a threaded bore in the pilot portion of the pilot holder and which includes a spring biased pin projecting upwardly into the transverse slot in the pilot holder. In another embodiment, the cutter blade is mounted in the transverse slot in the pilot holder by a pin and slot connection provided by a slot in the blade and a pin passing through the pilot holder.

Abstract: An indexable milling cutter has inserts arranged in a configuration of densely packed pairs, or intermeshed circular rows, of cooperating inserts, with predetermined small radial and axial differentials between the cutting corners of the insert pairs. In addition, the pitch between adjacent inserts of the pairs varies from a greater to a lesser pitch, and the axial rake angle of the insert pairs alternates from substantially zero to a small negative angle. The configuration is effective to create reduced size chips, yielding both improved surface quality and significantly reduced insert wear.

Abstract: The invention discloses a rotary tool, for example a milling cutter, having a tool body 2 including at least one helical seating channel into which is brazed, bonded or clamped a cutting blade (8, 18, 30). The blade(s) is/are helical strips of high speed steel or tungsten carbide having a leading edge to cut a work piece. A leading face (10) of the blade has wave-form or castellated grooves to give an undulating or serrated leading edge so that the metal removed from the work piece is removed in small clips not in long lengths of swarf. In examples given, the grooves of the leading face are provided with stop ends (26) to act as a brazing or bonding key. An outer surface (36) of the blade may also be undulating, if required.

Abstract: The present invention is a rotary machining tool and a method of making it using an easily replaceable cutter element assembly. A circular saw is exemplary of a cutting tool which can be made using the present invention. The cutter element assembly comprises two portions. The first is an inverted, generally U-shaped clevis with spaced apart side portions that fit over the circumferential edge of a sawplate. The clevis has an upper portion which extends outwardly from the sawplate edge thereby defining a tooth retaining socket between the sawplate edge and the clevis. The side portions of the clevis are apertured to accept a pin for attachment to the sawplate which has a corresponding aperture. A buttress attached to the clevis normally bears against the leading edge of a gullet and prevents rearward rotation when in use. The second member is an insertable tooth having a head and an elongated tapered shank. The shank has a taper on its upper surface sufficient to form a self-releasing taper, usually between 3.

Abstract: A set of two cutting units are located on the end of a tool to be rotated. The cutting units are radially aligned and on a bevel. Each blade on each cutting unit has a radial rake of at least 60 degrees, a clearance angle, and serrations cut at an angle normal to the cutting edge to provide a series of points extending along that cutting edge.

Abstract: An internal disk milling cutter for the milling of workpieces includes a one-piece annular base body. Insertable tool bit holders are arranged around a circumferentially internal surface of the annular base. Most of the holders are in the shape of circular segments and have frontal surfaces engaging the frontal surfaces of the adjacent holders. One holder has frontal surfaces which are non-diverging in the radially outward direction. An adjacent holder has a frontal surface of the one holder. A clamp wedge is disposed in either of such opposing frontal surfaces to clamp all of the holders circumferentially together. The holders bear radially outwardly against the base at circumferentially spaced locations which are in the vicinity of the frontal surfaces.

Abstract: In inserted blade rotary end mills having tapered blades inserted in axially extending tapered sockets. The improvement of providing longitudinal interfitting serrations on opposed surfaces of both the inserted blades and sockets to prevent twisting of the blades in the sockets.

Abstract: The invention relates to cutting tools for metal working. The claimed cutting tool (needle-cutter) comprises cutting elements assembled at least into two sets and presenting essentially pieces of wire. The cutting elements are fastened to one another at one end, thereby forming the internal non-working surface while their other free ends form the working surface. According to the invention the working surface is essentially a disc having the side edges arranged at an angle substantially equal to 90.degree.. The diameter of each cutting element and the mean length thereof in a set are represented by the following ratios:d.sub.1.sup.4 /l.sub.S.sbsb.1.sup.2 =d.sub.2.sup.4 /l.sub.S.sbsb.2.sup.2 =. . . d.sub.n.sup.4 /l.sub.S.sbsb.n.sup.2,where:d.sub.1, d.sub.2 . . . d.sub.n are the diameters of the cutting elements in sets;l.sub.S.sbsb.1, l.sub.S.sbsb.2. . . l.sub.S.sbsb.n are the mean lengths of the cutting elements in sets;1, 2 . . . n are the numbers of sets.

Abstract: A conical reamer having an elongated, longitudinally tapering head formed with two longitudinal flutes and rotated about its longitudinal axis by an integral shank portion. An axially elongated groove continuously adjacent each flute is open in a forward, and closed in a rearward direction and receives an axially elongated, reversible cutting blade having a cutting edge exposed in the flute. A frontal end face of the blade diverges obliquely from a plane perpendicular to the reamer axis at one acute angle in a radial direction toward the axis, and at a second acute angle in a direction circumferential relative to the axis. The end face is conformingly engaged in area contact by an abutment face of a clamping ring under the pressure of a clamping screw on the head.

Abstract: A milling cutter comprising a cylindrical body having a bore adapted for receiving a driving shaft in coupled relation and a periphery with uniformly distributed trapezoidal cavities therein with inset cutting blades in the cavities. The cutting blades have base sections of trapezoidal shape corresponding to that of the cavities and the blades are insertable in two different positions, one being an endless screw position in which the periphery of the teeth of the blades are inscribed in a circle concentric with the axis of the body and the other being a spur position in which the tips of the teeth are inscribed in a circle concentric with the axis of the body. The base sections of the blades have surfaces facing respective surfaces of the cavities and respective pairs of the surfaces are formed with longitudinal grooves cooperatively defining common spaces in which axial keys are engaged to lock the respective blades in the cavities radially.

Abstract: The present invention relates to rotary cutting tools and can find most utility when applied for abrading the cylindrical surfaces of small-sized blanks. The tool comprises a number of the gangs of elastic cutting elements made as equal-length wire segments held together with one of their ends in a close proximity to which said cutting elements are forced to one another with their side surface, while the other (vacant) ends of the cutting elements establish the tool cutting surface featuring a factor of its filling with the butt ends of the cutting elements lying within 0.1 and 0.99. Each of the gangs of cutting elements (as viewed in a longitudinal section thereof) is essentially two opposite trapezia spaced equidistantly from the tool axis of rotation and facing with their greater bases said axis, a feature that adds much to the cutting capacity of the herein-proposed tool.

Abstract: A rotary drill bit for rock drilling comprising a plurality of cutting elements mounted by interference-fit in recesses in the crown of the drill bit. Each cutting element comprises an elongated pin with a thin layer of polycrystalline diamond bonded to the free end of the pin.

Abstract: An indexable insert milling cutter having multiple round inserts located in staggered individual isolated pockets formed in the annular periphery of the cutter body. Each insert is trapped in its pocket with only a small fraction of the cutting edge projecting beyond the periphery of the body. A chip clearance wall extends outwardly from the cutting face of the insert to the periphery of the body.

Abstract: Metal cutting tools comprise a tool body including a shank and generally cylindrical tool head having top and circumferential surfaces. The tool head defines a plurality of generally radially extending slots spaced at intervals about the tool head. The slots open on both the top and circumferential surfaces of the tool head. Each slot matingly receives a U-shaped anvil. A cutter insert is clamped between the legs of the U-shaped anvil and butts against the U-shaped anvil and tool head to position the cutter insert in the metal cutting tool with at least one cutting edge exposed. The cutter inserts have polygonal shapes, square and triangular shapes being shown, and are indexible and replaceable. The U-shaped anvils are also replaceable. The metal cutting tools accurately mount the cutter inserts, are of high strength and durability, and have a long service life by virtue of the replaceability of the cutter inserts and U-shaped anvils.

Abstract: A helical cutterhead for a wood planer for reducing noise level during planing by supressing vibration and sound radiation by having more than one knife blade engaged in the workpiece at any instant by satisfying the minimum condition of the formula L=.pi.D cot.phi./N is less than the workpiece width and in which L is the contact distance, D is the cutterhead diameter, N is the number of knife blades, and .phi. is the helix angle, and in which L is less than 4 inches.

Abstract: A cutter shaft for a wood machining apparatus is provided with at least one pocket in which a cutting knife is arranged between a pressure plate and a wear part with the cutting edge of the knife projecting beyond the peripheral surface of the shaft. A wedge located in a cutout of the shaft, intersecting the pocket, is guided in the cutout movable substantially in radial direction of the shaft and engaging with a wedge face, inclined at a predetermined angle with respect to the radial direction, a corresponding face of the pressure plate to press the latter against one side face of the knife and therewith the other side face against said wear part. The aforementioned angle between the two engaging faces is outside the self-locking range and at least 35.degree. and preferably about 42.degree.. The wedge is biased by a spring in radial outward direction and, during rotation of the shaft, also by centrifugal force.