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

Abstract: An end-mill tool has at least one low helix angle flute, or primary flute) and at least two low helix angle flutes, or secondary flutes. The primary and secondary flutes intersect to define a plurality of compound helical cutting surfaces. Each of the compound cutting surfaces includes a cutting edge having a leading portion formed adjacent one of the primary flutes and a trailing portion formed adjacent one of the secondary flutes.

Abstract: A milling cutter for performing milling work on a work comprises a cutter body having a ring-shaped structure. A plurality of first tips are disposed on an inner peripheral surface of the cutter body along the circumferential direction thereof with a distance between adjacent ones and adapted to perform rough cutting work on a pin, a journal of the work and journal thrusts disposed at both ends of the journal. A plurality of second tips are disposed on both side portions of the inner peripheral surface of the cutter body along a circumferential direction thereof with a distance between adjacent ones and adapted to perform rough cutting work on side surfaces of counterweights disposed at both end sides of the pin and the journal of the work. A flat drag disposed on an inner peripheral portion of the cutter body and adapted to perform a flat cutting work on the journal thrusts.

Abstract: The present invention pertains to a long cutting length milling cutter with inserts with hole with cutting edge inserts which are arranged on various levels in the axial direction from a front end of the said milling cutter body. The inserts of the various levels are arranged according to steps, whose mean height, excluding the thickness of the insert belonging to the step or seat, is not less than the thickness of the insert. The radial angle .delta., which is formed by the radius of the milling cutter body passing through the vertex of the cutting edge of an insert with the straight line parallel to the base of the insert and passing through the vertex of the insert, has an amplitude not less than 10.degree..

Abstract: A small diameter endmill and cutting insert therefor especially adapted to endmills of small diameter, e.g., three inches or less, by virtue of a cylindrically convex flank surface of radius of curvature preferably greater than the radius of the cutting path of the endmill.

Abstract: A high-speed carbide rotary cutting tool designed for use in the carving, cutting and shaping of most materials including, but not limited to, wood, ferrous and non-ferrous metals, bone, stone, plastics and composites. It is designed for use in high-speed, hand-held rotary grinders, such as flex shaft hand pieces, die grinders, and other high-speed stationary grinding tools, primarily using 1/4 inch and 1/8 inch shaft sizes. The tool includes a triangular solid carbide cutting head shaped for cutting different profiles. The cutting head is brazed to a mandrel in such a manner as to render the tool one piece.

Abstract: A cutter bit includes a body integrally formed with a mounting shank. The body is formed with a pair of chip boxes having an arcuate surface and a planar surface with a cutting knife mounted to each planar surface. A plurality of equally spaced recesses are formed in the body to reduce cutter bit weight, and to promote heat transfer from the cutter bit to the surrounding atmosphere. Adjacent recesses form annular ribs which extend circumferentially around the body from one cutting knife to the arcuate surface adjacent the other cutting knife. The arcuate ribs operate as heat exchanger fins by substantially increasing the outer surface area of the cutter bit thereby substantially increasing the rate of heat transfer from the cutter bit to the surrounding atmosphere.

Abstract: A generating milling cutter including a supporting body having a plurality of circumferentially and, if desired, axially spaced supporting teeth, each having a radial seat surface and a second seat surface which extends at the root of the supporting teeth substantially perpendicularly thereto for receiving cutting blades or cutting ledges of heavy duty material adapted to be mounted to the teeth. The seat surfaces of the cutting blades or cutting ledges cooperate with a rearward first abutment surface and a lower second abutment surface. The cutting blades or ledges include at their rearside at least a third abutment surface which extends transversely to the rearward first and second abutment surfaces and cooperates with at least one complementary third seat surface of the supporting teeth.

Abstract: A highly stiff end mill comprising a shank, a plurality of helix cutting edges on the periphery of the end mill, the end mill being characterized in that a radial rake angle of the helix cutting edges in a cross section perpendicular to the longitudinal axis of the end mill is set in the range of -29.degree. to 0.degree. and a core diameter of the end mill is set in the range of 70 to 90% of the outside diameter of the end mill.By selectively determining the negative rake angle in the range described above, this end mill is applicable to hard materials and has general-purpose properties. The improper factors of the end mill, such as increased cutting resistance, can be compensated for by setting the core diameter thereof to the range described above. This end mill is also structured to be able to cut materials with less hardness values as well as hard materials, thereby covering a wide range of applications.

Abstract: A cutting insert is disclosed which includes a polygonal plate-shaped insert body having two opposite faces directed in the direction of insert thickness and a plurality of peripheral faces lying between the opposite faces. The opposite faces have marginal edges with at least one of the marginal edges defining a main cutting edge. The peripheral faces intersect one another to form marginal edges with one of the marginal edges defining an auxiliary cutting edge which intersects the main cutting edge. The peripheral surface which includes the marginal edges defining the main and auxiliary cutting edges includes a rake region extending along the main and auxiliary cutting edge.

Abstract: A circular cutting blade is provided in which the body is a synthetic fiber glass reinforced material which has a metallic hub and an outer cutting ring made from high speed steel, tungsten carbide, ceramic material or other cutting materials for a particular application. The outer cutting ring has an inwardly projecting tenon portion that has periodic trapezoidal recesses. The body of the blade is integrally molded about the tenon filling the recesses with the molded body to form torque projections to ensure that the outer ring is driven integrally with the blade body during cutting operations.

Abstract: A system for cutting lateral holes in plastic pipe liners at the locations of lateral taps in a surrounding pipe comprises a cylindrical body which is inserted into the pipe liner, and remote devices for observing and controlling operation of the body. A rotary cutter, having axial and radial cutting teeth, can be remotely translated in three dimensions with respect to the body, making it possible to cut non-circular holes; the body can be rotated about its axis within the liner as well. A video camera on the sled permits observation of the cutter. Lateral taps are precisely located by monitoring return signals from a microwave transmitter/receiver on the sled, and identifying points of maximum deviation in microwave reflection.

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: A cutter and gear assembly for simultaneously dressing a pair of spaced aligned welding electrode tips comprise a housing with a power-rotated gear journaled thereon for rotation upon a first axis and having an axial bore at one end terminating in an annular seating flange and adjacent its other end having an annular groove. A dressing tool cutter assembly is axially nested within the gear, bears against the seating flange and has a plurality of axially elongated arcuate drive tangs nested within corresponding drive grooves within the bore. A snap ring is anchored within the annular groove and retainingly engages the cutter assembly. The cutter assembly includes a pair of symmetrical outwardly opening cutting elements upon its opposite sides, each cutting element including a plurality of angularly related inclined cutting edges having a profile corresponding to the contour of a pair of aligned electrode tips adapted for axial projection into and against the cutting elements upon the first axis.

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: A milling cutter including a supporting body having a longitudinal axis and presenting a frontal face and a circumferential side. The supporting body is provided with a radial recess. A plurality of cutting plates are disposed along the circumferential side and arranged in rows each extending generally in the longitudinal direction of the supporting body. At least one of the cutting plates is a face cutting plate having a cutting edge for cutting at both the circumferential side and at the frontal face. The cutter includes a cassette having a quadrilateral cross section and disposed in the recess. The face cutting plate is fastened to the cassette, and at least one fastening element is provided for releasably tightening the cassette in the recess.

Abstract: An end mill tool holder body and a tool suitable for use in a boring mill or any other metal-cutting machine. The tool has a round body with shank to suit the machine tool and a flat, laterally-disposed surface at one end of the body terminating in a shoulder. An axial bore extends through the body and a draw bar in the bore has a pin which extends through an opening in a cutting insert and a nut on the other end of the draw bar clamps the cutting insert against the shoulder, holding it rigidly in position for milling or boring.The inserts are of the throw-away type and are made of precision dimension so that the body and cutting insert can be used in a computerized operation.

Abstract: A milling cutter includes a housing having an annularly extending groove and a plurality of recesses therein. Interchangeable inserts, each having a curved edge are mounted in the recesses with the curved edges resting in the annularly extending groove. At least one cutting element is mounted in each insert. The inserts are held in the recesses by clamping.