Abstract: A tire rasp blade is provided with an elongated planar body having a working portion comprising a plurality of uniformly and closely spaced teeth which define an arcuate working perimeter. Each of the teeth has a base and a working edge and is separated from neighboring teeth by generally elliptical primary cutouts which are oriented normal to the tangent of the working perimeter. The teeth are preferably monolithic and of a uniform size and shape, and are both angularly set and laterally displaced relative to the plane of the blade body.

Abstract: An improved rotary cutting end mill which includes an arcuate shaped circular land on the first relief wall which contacts the cutting edge and a slightly angled cutting end. This end mill yields a smooth finished surface on the work piece and can be used at higher rotary speeds. This end mill shows less corner wear, improved rigidity and is operated with less operating noise.

Abstract: An end mill having an insert blade utilizing polycrystalline diamond cutting edges along the insert lateral and end edges wherein side milling, surface milling and pocket milling may be achieved with extraordinary tool life.

Abstract: A replaceable insert cutter comprising a cutting body, a plurality of insert pockets in the periphery of the body, each pocket having an insert back locating wall establishing insert circumferential position, a V-shaped support seat establishing a radial and axial position of the insert in a radial threaded screw hole extending through from the V support seat, a cutter insert mounted in the pocket having a back surface engaging the back locating wall, a V base of the insert seated on the support seat, a screw hole and screw extending radially through the insert and retaining engagement with the threaded screw hole, and a radially outermost cutting edge facing circumferentially away from the back surface.

Abstract: Workpieces with alternating contour mating surfaces are produced by a routing tool comprising a working portion having an axis and an outer contour shaped so that in an axial cross-section of the working portion the outer contour includes a plurality of straight lines arranged in a consecutive order and each extending in a direction substantially along the axis.

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 machining and bevelling tool, which is adaptable to a standard grinding machine for ophthalmic glasses, includes a metal body (1) having in its periphery a V shaped groove (2) and at least two teeth (3) each in the form of a small inserted plate (4) presenting a notch of corresponding V shape which protrudes in said groove (2), a shallow adjacent recess (8) being provided in front of each tooth (3), considering the direction of rotation of the tool. The diameter of the tool is larger than that of an ophthalmic glass, and substantially equal to that of a standard grinding wheel for ophthalmic glasses.

Abstract: The present invention is in a woodworking knife or blade for mounting in a rotating cutterhead of a woodworking machine to either be in alignment with the cutterhead surface or to a table of the woodworking machine whereon wood to be planed or jointed travels. The knife or blade has at least two cutting edges of different sharpness angles ground therein, each cutting edge for machining a surface of a particular type or hardness of wood or related material.

Abstract: In a face milling cutter, a plurality of cutter inserts are detachably mounted to an outer periphery of a forward end portion of a cutter body. The cutter inserts are arranged in peripherally spaced relation to each other about a rotary axis of the cutter body. Each of the cutter inserts has opposite faces one of which, first face being generally in the form of an octagon having eight ridgelines or a hexagon having six ridgelines, which are formed respectively into cutting edges. Each pair of adjacent cutting edges as a major edge are intersected with each other at an obtuse angle.

Abstract: Boring bar having plural circumferentially spaced cutting inserts with incremental radial and axial spacing for innermost radial and foremost axial to outermost radial and rearmost axial in progressive sequence relative to the direction of rotation.

Abstract: The invention relates to a milling cutter which comprises a body (1) having two indentations (4,5) presenting each a housing (4',5') the body of which makes with the longitudinal axis of the body an helix angle which is not equal to zero. In each housing a cutting insert (6,7) is removably fixed which comprises a corner portion emerging on the frontal face (9) of the body and a main or major cutting edge extending beyond along the external lateral rim of the indentation. The shape of this insert and its position on the cutter are such that the radial cutting angle of the cutter varies in decreasing towards the frontal end of the body, and that the clearance angle of the cutter is constant.

Abstract: An indexable slot cutting tool for narrow widths having both head and base members with adjacent opposed cutting faces. An axially oriented sleeve with right hand differential pitch threading engages the head and base members to effect axial movement of the cutting faces for slot adjustment.

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 milling cutter tool for cleanly and smoothly cutting honeycomb core material is disclosed. The cutter tool includes a circular saw blade sharpened to a knife edge. A bevel extends from the upper surface towards the sharp peripheral edge. A plurality of cutter bodies extend vertically above the circular saw blade. The cutter bodies include a plurality of teeth generally parallel to each other and extending vertically with respect to each other. The teeth include a piercing point and sharp cutting edges extending at a clearance angle from the piercing point. A flat surface extends between the teeth. The circular saw blade having a sharp bevel cutting edge provides a clean cut of the honeycomb core material at the surface to be cut. The sharp points of the cutting edges pierce the honeycomb material, dig into it and slice it. The cutting edges further slice and cut the dross honeycomb core material as it is separated from the surface being cut. A clean, smooth surface is left to which a panel may be bonded.

Abstract: A manicurist's bit for shaving away layers of an artificial fingernail. The bit comprises an elongated body portion having a right circular cross section, and has a plurality of angled knurls extending along the width of the body portion. In a preferred embodiment, one end of the body portion is concave. In operation, the bit is given a circular motion in the direction of the angle of the knurls, and is thereafter applied to the surface of the nail to be shaped. The bit shaves away portions of the fingernail, and can be used to shape the nail in the area near the cuticle, and can be used to shape the underside of the nail close to the finger tip.

Abstract: An end mill includes a body having a core receiving recess and a cutting insert releasably mounted thereon. An upper surface of the insert has a first cutting edge ridge serving as an outer peripheral cutting edge, a second cutting edge ridge providing an end cutting edge and a third cutting edge ridge providing an inner peripheral cutting edge. The upper surface has a corner where the second and third cutting edge ridge intersecting each other. The upper surface is composed of a central portion and a corner portion including the corner, whereby the third cutting edge ridge comprising a first edge portion defined by a ridge of the corner portion and a second edge portion defined by a ridge of the central portion. At least that portion of the corner portion disposed adjacent the central portion is inclined providing a thickness of the insert is progressively reduced toward the corner. The insert has a negative radial rake at the outer peripheral cutting edge and a positive axial rake.

Abstract: An insert cutter includes a cutter body of a generally circular cross-section having an axis of rotation therethrough. The cutter also includes a plurality of cutter inserts releasably mounted on a periphery of the cutter body in circumferentially spaced relation to one another. Each of the cutter inserts has a main cutting edge indexed in its peripheral cutting position. The cutter inserts are disposed so that the indexed main cutting edge of at least one of the cutter inserts is provided with an axial rake angle different from axial rake angles of the indexed main cutting edges of the other cutter inserts.

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: A cutter for forming a spiral groove on a work is provided.The cutter comprises a cylindrical body provided on the outer periphery thereof with a plurality of cutting edges arranged circumferentially at equal intervals and displaced axially by a predetermined pitch. Further, each of the cutting edges is provided with a pair of additional cutting edges adjacent thereto and displaced circumferentially on both sides, respectively, so that when the work and the cutter are rotated in the same direction, a high-precision spiral groove is formed on the work.A screw-shaft machined by the cutter according to the present invention is effectively used for a carriage transfer unit of a still video floppy disk drive, allowing accurate adjustment of the portion of the carriage and accurate transfer of the carriage with respect to the disk to be performed in a simple manner and at low cost.

Abstract: A method and apparatus for cutting a pair of circular grooves in the side edges of the periphery of a circular disk such, for example, as the stator of an alternator. A milling cutter having axially spaced cutting elements along its periphery is positioned so that its axis is parallel to the axis of the disk. The cutter is moved toward the disk while being axially rotated, to cause the cutting elements to cut into the side edges of the periphery of the disk. The disk is then rotated one full turn to cause the cutting elements to cut the grooves.

Abstract: Rotary slot cutting tools comprising disc shaped tools having cutting elements peripherally disposed on the discs. The cutting elements include chip forming means for narrowing the width of the chip below the width of slot being cut.

Abstract: A milling cutter for cutting the contaminated surface of concrete and used at the time of repairing and dismantling nuclear facilities. The milling cutter is characterized in that guide grooves are provided on the outer surface of a body, with their edges slanted from both sides of the body toward the center thereof, and that cutter chips are located along the stepped edge of each of the guide grooves in such a manner that the cutter chips can be easily detached and that those located along the stepped edges of the adjacent grooves are symmetrical in relation to the center line of the body.

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

Abstract: A face milling tool is described including a holder securable to the end of a rotatable spindle. Cutting inserts are detachably secured to the end face of the holder at a radial distance from the axis of the spindle. The cutting edges of the inserts extend outwardly of the holder end face such that the cutting edges are free to engage and machine the surface of a workpiece. The inserts are of a wafer-like form and means are provided for detachably securing the inserts to the holder through a central axial aperture in the inserts. The securing means lies within the outer end face of each insert and the cutting edge of each is substantially straight, being formed by a portion of an edge at the intersection of the insert side wall and the end face. Each insert lies at such an angle to the plane of the workpiece that the insert side wall forms a rake face and the outer end face of the insert forms a clearance face and the straight cutting edge lies at a small radial shear angle.

Abstract: The present invention is an improved heavy duty circular saw useful for tree falling in conjunction with mechanized feller/buncher equipment. The saw is characterized by ruggedness, easy field repairability, and safety of operation. It is constructed using a flat metallic saw plate of circular configuration. A series of flat segment members are attached around the periphery of the saw plate on each face. Each of these segment members has a plurality of buttress- or tooth-shaped tooth retaining portions on the outer periphery. These buttresses are formed with gullet-shaped spaces between them. The segment members are in an abutting end-to-end relationship on each face of the saw plate. Segment members on opposite sides of the plate are in a staggered configuration so that the abutting end portions of the members on one side are generally located opposite the central portions of the segment members on the opposite side. The tooth retaining buttresses on each side are maintained in an aligned relationship.

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: A cutting tool for milling solid propellant for rocket motors includes a cutting arm that is fixedly attached at a center location to a rotatable arbor or shaft. The cutting arm has a cutting blade and inwardly located hole at each end with each of the blades facing in cutting position substantially parallel to the axis of rotation of the arbor, the heels of the cutting surfaces being ground off to avoid or eliminate drag and resultant friction on the milling surface.

Abstract: Metal working tools or tool holders having a body with flat-faced surface containing insert pockets with at least two indexable inserts in each pocket are described. A tapered wedge block is positioned between each pair of inserts to wedge the inserts against the walls of the insert pocket and to separate the pair of inserts from each other. The pair of inserts have parallel cutting edges facing the leading wall. In one preferred embodiment, a pair of indexable cutter inserts are positioned in each pocket of a plural pocket face mill body. The inserts are positioned in leading and trailing positions with an intermediate wedge block to provide parallel cutting surfaces in the same direction.

Abstract: An end mill has a plural number of helical blades formed on the main body of a machine tool. Each of the blades is provided with a plural number of notches spaced along its length and shifted relative to the corresponding notches in the preceding blade. When the notch is shifted to the tool end of the tool, the notch is inclined toward the shank end. On the other hand, when the notches are shifted toward the shank end of the tool, the notches are inclined in the opposite direction, i.e. toward the tool end. Therefore, the wear by rubbing on the side of the blade is diminished, the cutting resistance is decreased and the cutting performance is increased.

Abstract: A circular saw having dual chip cutting action in which all of the saw teeth are of like width and radial height and have similar tooth geometry with the working surface of the leading tooth face disposed at a negative rake angle and having side portions extending outwardly and rearwardly from a central portion at a negative angle to the side faces of the tooth. A single notch is formed in the top face of each tooth and intersects the working surface, and the notch in alternate ones of the saw teeth are disposed at one side of the central plane of the saw body and the notch in the other alternate ones of the saw teeth are disposed at the other side of the central plane of the saw body.

Abstract: Rotary slot cutting tools comprising disc shaped tools having cutting elements peripherally disposed on the discs. The cutting elements include chip forming means for narrowing the width of the chip below the width of slot being cut.

Abstract: A cutter head, for high speed face-milling cutting, with cutting plates pressable by centrifugal force against recess walls of the cutter head body. The cutting plates are arranged in recesses, of the cutter head body, with walls directed radially outwardly toward each other and having a dovetailed cross section tapering toward the chip space, the cutting plates being respectively held by a clamping piece having an inclined surface which is located opposite the free surface of the cutting plates. The cutting plates, which may be multiply arranged in common radial planes, are identical and are disposed with their cutting edges in a common tangential plane. Adjacent cutting plates of one radial plane, and forming a row, may be axially longitudinally displaced relative to the cutting plates of a second or third radial plane.

Abstract: A cutting tool is provided with cutting elements being arranged in continuously recurrent groups comprising three or four cutting elements. These cutting elements are arranged in different distances (A, B, C, D, E, F, G) to each other which distances shall be within certain determined limits.

Abstract: A rotary cutting blade assembly for removing rubber tread material from a pneumatic tire carcass prior to texturizing and finishing the tire carcass for retreading includes a cutting wheel rotatably mounted on an arbor. The cutting wheel includes a plurality of pockets adapted to receive and mount a plurality of cutting blades, which blades present an angular cutting edge which engages the tread material on the tire carcass substantially parallel to the carcass to slice and to remove the tread material from the carcass.

Abstract: The milling cutter of the invention comprises a cutting section having a plurality of blades positioned on the surface and separated one from the other by flutes. At least two blades have one or more smooth segments, exhibiting an even and unbroken land and cutting edge, interspersed with one or more serrated segments containing a row of cutting teeth. The positions of the smooth and serrated segments are staggered from blade to blade so that in the course of one complete revolution of the cutter, each point along a surface being worked by the cutter will be contacted by at least one smooth segment and at least one serrated segment.

Abstract: A dental tooth bur includes a plurality of flutes longitudinally disposed at one end of a shank and adapted to produce a prepared cavity having a wall that has a plurality of generally microretentive ridges in its lower portion and that is generally smooth in its upper portion. The microretentive ridges in the lower portion of the wall assist in the positive retention of the material used to fill the cavity, while the generally smooth upper portion prevents microfracturing of the tooth enamel and/or filling material resulting from mastication pressure. Each of the flutes includes a cutting edge having a plurality of recesses in its lower portion and a nonrecessed area in its upper portion. The recesses produce the ridges in the cavity wall. The flute design allows the simultaneous smooth surfacing of the upper portion of the wall and the production of the ridges in the lower portion of the wall. The ratios of the recessed and nonrecessed areas of the cutting edges of the flutes may vary as desired.

Abstract: A boring reamer with end mill cutters comprising a cutting edge portion, a straight shank and a taper shank. The cutting edge portion is formed at the forward edge of the straight shank, and has, at its forward end, end mill cutters each of which is formed with a chamfer angle portion and a relieving angle portion, and has a reamer, which is slightly larger in the diameter than the end mill cutters and provided with an ultra-left-hand twist right-hand helix angle, and which is formed into a saw-tooth like configuration having a land portion.

Abstract: A combined boring and milling tool has at least three triangularly shaped turnable cutter blades. The effective cutting edge of the first turnable cutter blade extends as bit (or drilling cutting edge) from the periphery of the shank at least to its axis. A second turnable cutter blade is offset 180.degree. peripherally from the first and its effective cutting edge extends as cutting edge on the periphery of the shank parallel to the shank axis. A third turnable cutter blade is offset axially from the first so that its effective cutting edge extends as a cutting edge parallel to the shank axis. The two effective cutting edges of the second and third turnable cutter blades lie on the same flight circle and their working ranges overlap axially. The first and third turnable cutter blades have a common chip space.

Abstract: A rotatable cutter spindle for cutting chips of predetermined length has a supporting body having an axis, and a plurality of cutters mounted on the body in spaced relationship to one another and inclined relative to the axis of the body. Each of the cutters includes an acute angle with the axis and has a leading and a trailing end and defines cutting angles which differ from one to another of these ends. Each of the cutters has alternately arranged radially outer cutting edges and radially inner cutting edges of which the radially inner cutting edges are formed by grooves which are provided in the cutters and which have a width that increases from the leading end toward the trailing end of the cutter. The radially outer cutting edges are arranged at a first common circular surface, whereas the radially inner cutting edges are arranged at a second common circular surface.

Abstract: A holder for a rotary metal cutter for use with a milling machine having a shouldered head portion, a cutter and a clamp member. The cutter is sandwiched between the clamp member and the shoulder of the head portion. Where it is desired that the cutter be adjustable on a horizontal plane, a variation of the holder is provided, which includes a clamp element cooperating with a clamp member to permit the required rotation and to assure a secure clamp on the cutter after adjustment. Variations of the holder are included for engaging two cutters set on opposite sides of the holder.

Abstract: A cutter blade for use in cutting metal is formed with a recess spaced behind the cutting edge on the cutting face to save expensive cutting material, to reduce the time and energy required to sharpen the cutter blade, and to lengthen the life of the sharpening tool. High density sintered powdered tool steel lends itself well to this construction, as do cast and forged tool steels.

Abstract: A drill bit comprising a shank having three cutting blades extending radially therefrom with the longitudinal cutting edges of the blades defining a right circular cylinder coaxial with the axis of the shank. At the working end of the shank a countersink cutting point is formed by the cutting edges of the blades sloping together to a common point on the axis of the shank and defining a right circular cone.

Abstract: An insert type end milling cutter and cutting insert for the same which facilitates metal removal. Each insert has a cutting edge which is defined by the intersection of a cutting face and a land area. The cutting face is disposed so as to have a neutral rake angle and the cutting edge itself lies in a single plane but has a generally sinusoidal configuration in a direction normal to the cutting face. The milling cutter includes a plurality of insert locating grooves which locate the inserts in a manner such that the cutting edges form straight helixes over at least a portion of the cutter length. The inserts may be reasonably retained in the locating grooves to facilitate ease of removal for repair or replacement purposes.

Abstract: An on-edge, double positive rake, indexable cutting insert in which a short cutting edge is formed along one side of one face surface of the insert while a longer cutting edge is formed along an angularly related side of the other face surface of the insert. Inserts of this type are particularly well suited for use as the outer inserts in an end mill having helical slots for receiving the inserts. When so used, two inserts are placed in side-by-side relation in one slot with their short cutting edges located in active cutting position while one insert is positioned in an adjacent slot with its long cutting edge located in active cutting position and axially overlapping the gap between the two short cutting edges. With this arrangement, material which is left uncut between adjacent inserts in one slot is cut away by the overlapping insert in the adjacent slot. Each insert includes edge surfaces defining clearance faces for the two cutting edges and enabling each cutting edge to make a right angle cut.

Abstract: A milling cutter, especially contour milling cutter, which comprises individual cutting elements helically arranged around the axis of the cutter body and connected thereto. These cutting elements are separated from each other in circumferential direction of the cutter body by chip grooves. All of the chip grooves extend helically about the axis of the cutter body in the same sense. Webs project from the cutter body and extend in the same sense helically about the axis of the cutter body while being separated from each other by the above mentioned chip grooves. Along the outer web edges which are located on a common cylinder mantle there are provided depressions or cutouts separated from each other by web sections which form the individual cutting elements.

Abstract: A cutter for edging plastic lenses to desired finished shapes and sizes including a main supporting wheel having an effective cutting edge formed of a multiplicity of circumferentially spaced replaceable cutting blades for clean chip clearance and ready accessibilty to individual removal sharpening and/or replacement as needed.

Abstract: A chipping device including a disc-like member having a front face and the opposite face connected at its central region to a rotating shaft, said front face being provided with a spiral working surface which consists of main and auxiliary oblique surface portions extending along a spiral path from the central region of said disc-like member to the peripheral edge thereof, and being inclined relative to a plane perpendicular to the rotational axis of the disc-like member with an angle included between said main and auxiliary surface portions, said working surface having a plurality of cutting blades spaced from one another therealong, each of said cutting blades having main and auxiliary cutting edges substantially parallel to said main and auxiliary oblique surface portions, respectively.

Abstract: A cutting insert, especially for milling cutters and the like, and which is to be mounted in a tool holder in a negative radial rake position. The insert is indexable and invertable and has a cutting edge means. The peripheral wall adjacent the cutting edge means has recesses therein which interrupt the cutting edge means. The depth of the recesses becomes shallower as the recesses extend away from the cutting edge means until the recess terminates in the peripheral wall. An insert having at least two cutting edges is described wherein the insert has at least two cutting edges and the recesses interrupting one cutting edge are staggered relative to the recesses interrupting the other cutting edge when the cutting edges are viewed in superposed relation.

Abstract: Tooth forming blades for cutting hypoid pinion and ring gears, each including a pressure angle face and an end face which require periodic sharpening, and a front or cutting face including a predetermined rake angle formed along the full blade length and requiring no sharpening, the blades being adapted to being mounted in radial receiving slots formed in a cutter body aligned at their cutting ends and having overall lengths which vary in a random manner, affective to being individually replaced after being ground to a predetermined minimum length as a result of repeated sharpening operations.

Abstract: A cutting insert, especially for milling cutters and the like, and which is to be mounted in a tool holder in a negative radial rake position. The insert is indexable and invertable and has a cutting edge means. The peripheral wall adjacent the cutting edge means has recesses therein which interrupt the cutting edge means. The depth of the recesses becomes shallower as the recesses extend away from the cutting edge means until the recess terminates in the peripheral wall. An insert having at least two cutting edges is described wherein the insert has at least two cutting edges and the recesses interrupting one cutting edge are staggered relative to the recesses interrupting the other cutting edge when the cutting edges are viewed in superposed relation.