Abstract: A cutting tip including a cutting edge portion made of a high-hardness material to take a thin-plate shape; and a support portion made of a material which is more worn in contact with a workpiece than the cutting edge portion not to exert a machining action on the workpiece even in contact with the workpiece, and securing and supporting the cutting edge portion on a reverse side of a rake face of the cutting edge portion. Thus, the width of flank wear is prevented from increasing and chipping of the cutting edge is prevented, so that the life of the cutting tip can be extended.

Abstract: An end mill including a shank having one end gripped by a chuck which is rotatable about a predetermined rotation axis, and a blade body attached to the other end of the shank and rotatable together with the shank. The blade body has a shape in which the area of a cross section in a plane perpendicular to the rotation axis decreases as the distance from the shank increases, and includes a linear cutting edge parallel to, and at a certain distance from, the rotation axis. An end cutting edge adjoining the cutting edge in the longitudinal direction thereof may be provided. The blade body includes, for example, a rake-face-side surface including a rake face and adjoining the flank-side surface in two portions, and a linear cutting edge formed at one of the positions at which the flank-side surface and the rake-face-side surface come in contact with each other.

Abstract: The invention relates to a cutter support (11) for fastening to a cutter head, comprising a shaft-like pin (11) and a head, having a soldered-in cutter (12) with a minor cutting edge formed by a face (27) and a free surface (28). According to the invention the minor cutting edge has a rounded area (25), the radius of which continuously increases from a minor cutting edge end (25a) at least to the cutting edge center, or to the other minor cutting edge end (25b).

Abstract: A fixture for holding a cutter for a vertical turret lathe may comprise a block with a blind hole. A cutter with an indenter on its distal end may be secured within the hole such that a portion of the indenter comprises a positive rake angle. A method for testing cutters may comprise securing a cutter on a fixture of a vertical turret lathe which has a cutting material positioned adjacent the cutter. The cutting material may be rotated around a rotational axis at a constant rotational velocity. The fixture may be urged laterally such that the cutter progressively moves towards a periphery of the cutting material. The rotational velocity may be decreased as the cutter moves laterally to maintain a relative constant linear velocity between the cutting material and the cutter.

Abstract: The tool (1) according to the invention is equipped with cutting inserts (5) made of polycrystalline diamond and with washing channels cooling the tool from the inside and discharging, through outlet holes (15), jets of compressed air that remove the highly abrasive powders produced during machining from the cutting areas. In this manner, the tool undergoes less abrasion and anyway it can be sufficiently cooled. The particular choice of the material of the cutting inserts makes the tool more abrasion resistant, while conferring it in the whole a longer operating life. The invention also concerns a method of milling composite materials.

Abstract: An uncoated cutting tool that comprises a body containing a pocket. A polycrystalline cubic boron nitride blank has a cutting tip. The blank is brazed into the pocket using a braze alloy whereby there is a braze joint between the body and the polycrystalline cubic boron nitride blank. The braze alloy has a liquidus temperature of at least about 900 degrees Centigrade wherein the braze alloy is selected from the group comprising a nickel-gold braze alloy containing nickel and gold, a copper-gold braze alloy containing copper and gold, a silver-titanium braze alloy containing silver and titanium, and a silver-palladium braze alloy containing silver and palladium.

Abstract: A bit includes a body, a cutting edge, and a shim. The body has a shank end and a cutting end, and the shank end is arranged to be held by a drill or router. The cutting edge is positioned at the cutting end of the body. The shim is between the cutting end of the body and the cutting edge, and the shim is arranged to absorb forces so as to protect the cutting edge.

Abstract: A cutting tool insert, particularly useful for machining of cast iron, comprising a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel a hard and wear resistant coating; and at least (Al,Cr)2O3 layer applied to said body is disclosed. Methods of making a cutting tool insert are also disclosed. In addition, methods for machining of cast iron using the cutting tool inserts are disclosed.

Abstract: A mono crystalline diamond cutting tool is provided which can perform ultra precision machining on a crystalline material or a hard and brittle material with good swarf discharge and reduced cutting resistance to improve a precision of a cut surface, and has less wear or microchipping of a cutting edge and thus achieves long life. A tip having a cutting edge ridge in a rounded shape at a front end is provided, and a portion of the cutting edge ridge serving at least as a cutting edge is formed to have constant roundness by intersecting a first conical surface as a rake face with a second conical surface as a flank. The cutting edge ridge is rounded with a radius of less than 100 nm, the first conical surface has a width of 1 to 5 ?m, and a swarf release face substantially perpendicular to a cutting direction is provided in a portion on a side of the first conical surface opposite a line of the cutting edge ridge.

Abstract: Embodiments of the invention can provide cryogenic treatment processes for diamond abrasive tools. One process in accordance with an embodiment of this invention can include introducing an abrasive tool into a cycling chamber, wherein the tool has a temperature of about ambient temperature; and introducing at least one cryogenic material into the chamber, wherein the internal temperature of the chamber or tool can be controlled by adjusting the flow rate of the at least one cryogenic material. The process can result in a strengthened and toughened abrasive tool. The process can be repeated multiple times.

Abstract: The present invention relates to a coated cutting tool insert with elongated shape with a rake face and an opposite bottom surface with improved strength properties obtained by providing the inserts with a blasted bottom surface. The inserts are preferably used for parting and grooving operations.

Abstract: A cutting or parting tool including at least one cutting tooth connected with a basic element. The cutting tooth has a layer of carbide or of a mixture of carbide and polycrystalline diamonds. Furthermore, the carbide or mixture layer is connected to a carrier element of the cutting tooth made of a weldable material which is welded to the basic element.

Abstract: A cutting tool includes a body, a rake face, a flank face, a cutting edge and a region A. The body includes a base and a layer provided on a surface of the base. The rake face is located on a top surface of the body. The flank face is located on a side surface of the body. The cutting edge is located at an intersection of the rake face and the flank face. The region A is a region in the rake face near the cutting edge. A maximum height of the roughness profile Rz(A) of the region A is 0.5-1.0 ?m. A skewness Rsk(A) of the region A has a negative value.

Abstract: An end mill including a shank having one end gripped by a chuck which is rotatable about a predetermined rotation axis, and a blade body attached to the other end of the shank and rotatable together with the shank. The blade body has a shape in which the area of a cross section in a plane perpendicular to the rotation axis decreases as the distance from the shank increases, and includes a linear cutting edge parallel to, and at a certain distance from, the rotation axis. An end cutting edge adjoining the cutting edge in the longitudinal direction thereof may be provided. The blade body includes, for example, a rake-face-side surface including a rake face and adjoining the flank-side surface in two portions, and a linear cutting edge formed at one of the positions at which the flank-side surface and the rake-face-side surface come in contact with each other.

Abstract: A method of making a cutting insert includes: (i) forming a blank having a substrate and superhard material, the substrate having more than 4 pockets, the superhard material disposed within the pockets; (ii) removing cutting tips from the blank by cutting the blank along cutting lines; (iii) providing a cutting insert body having a plurality of cavities for receiving a corresponding number of cutting tips; (iv) inserting a cutting tip into each of the plurality of cavities; and (v) brazing the cutting tips to the cutting insert body. A related cutting insert includes: a cutting insert body having a plurality of cavities formed therein; a plurality of cutting tips, each of the plurality of cutting tips disposed in a respective cavity, the cutting tips having a geometry that provides a mechanical retention or lock when inserted into the cavities of the cutting insert body, the cutting tips further being brazed in the cutting insert body.

Abstract: A cutting insert has a body formed of a superhard material or a superhard material and a cemented carbide, and has a hole through said body and a preformed hole inlay in said hole to allow securing of the insert to a holder. The method of making same is also disclosed.

Abstract: An uncoated cutting tool that comprises a body containing a pocket. A polycrystalline cubic boron nitride blank has a cutting tip. The blank is brazed into the pocket using a blaze alloy whereby there is a braze joint between the body and the polycrystalline cubic boron nitride blank. The braze alloy has a liquidus temperature of at least about 900 degrees Centigrade wherein the braze alloy is selected from the group comprising a nickel-gold braze alloy containing nickel and gold, a copper-gold braze alloy containing copper and gold, a silver-titanium braze alloy containing silver and titanium, and a silver-palladium braze alloy containing silver and palladium.

Abstract: A method of making a cutting insert includes: (i) forming a blank having a substrate and superhard material, the substrate having more than 4 pockets, the superhard material disposed within the pockets; (ii) removing cutting tips from the blank by cutting the blank along cutting lines; (iii) providing a cutting insert body having a plurality of cavities for receiving a corresponding number of cutting tips; (iv) inserting a cutting tip into each of the plurality of cavities; and (v) brazing the cutting tips to the cutting insert body. A related cutting insert includes: a cutting insert body having a plurality of cavities formed therein; a plurality of cutting tips, each of the plurality of cutting tips disposed in a respective cavity, the cutting tips having a geometry that provides a mechanical retention or lock when inserted into the cavities of the cutting insert body, the cutting tips further being brazed in the cutting insert body.

Abstract: The present invention relates to cutting tool inserts. A cutting tool insert includes an abrasive tip of a hard material, an abrasive or superabrasive material. A cutting tool insert is bonded to an insert body by mechanical force. The mechanical forces are generated through deformation of mating geometric features on the abrasive tip and insert body.

Abstract: A cutting insert made of cemented carbide and the use thereof for recessing or copy-turning, preferably at a high rotating speed. The cutting insert has at least one recess for insertion therein of a cutting body of a material other than cemented carbide, such as a ceramic material.

Abstract: An end mill 10 is a tool for milling a metal block such as a metal mold and is placed in a machine tool such as a milling machine when in use. The end mill 10 is used to provide a rotary milling cutter and a milling method using the same, in which it is possible to perform orthogonal milling and pocket milling to efficiently form four corners with small radius, without repeatedly milling using a small-diameter end mill. The end mill 10 has two cutting edges 11a and 11b at its distal portion, and an edge angle D1 formed by the two cutting edges 11a and 11b is 70.53 degrees.

Abstract: A non-rotary cutting tool which is to be moved relative to a workpiece in a predetermined direction for cutting the workpiece, with its rake face being held substantially perpendicular to the predetermined direction. The cutting tool includes (a) a generally cylindrical shank portion, and (b) a generally semi-cylindrical body portion which has an outer circumferential surface constituted by the rake face and a semi-cylindrical surface. The semi-cylindrical body portion has a cutting edge which is defined by an edge of the rake face and which is covered with a diamond coating. Also disclosed is a process of machining a scroll member of a scroll compressor by using this non-rotary cutting tool.

Abstract: A cutting tool coated with diamond in which diamond is coated as a film on a substrate having a step 15 to 500 ?m in height in the vicinity of a cutting edge on the rake surface and/or the flank surface. Only the diamond film in the vicinity of the cutting edge can be polished first, without polishing the film of the diamond formed centrally of the rake surface and/or the flank surface. This enables the maximum effect (sharpening of the cutting edge and prevention of welding formation at cutting edge) to be realized with the necessary minimum polishing (with a decreased polishing removal), without setting special conditions and which is suited as a finishing tool.

Abstract: A cutting tool for a stump cutter device, having a holder and at least one cutter insert unit, wherein the cutter insert unit has a cutter head and a shank, and wherein the cutter insert unit can be connected with the holder by its shank. To achieve a simple and cost-effective tool exchange, along with the simultaneous low wear of the contact faces, the shank of the cutter insert unit respectively has at least a tapering shank section and at least a widened shank section. The holder has a recess with protrusions corresponding to the tapering shank section and an undercut area corresponding to the widened shank section and thus provides a positive connection between the shank and the holder.

Abstract: A cutting assembly that includes a tool holder that contains a pocket therein. A shim and/or pocket insert along with a cutting insert are within the pocket of the tool holder. The shim may present an oxidation-resistant surface. Exemplary materials for the shim include ceramics and coated cemented carbides and cermets. The pocket may present an oxidation-resistant surface wherein the pocket may have an oxidation-resistant coating or an oxidation-resistant pocket insert may be positioned within the pocket.

Abstract: An apparatus and method for forming a keyway in a workpiece is provided. The apparatus includes a shank and cutter, the shank and cutter immovably associated with respect to each other during the keyway forming operation. The apparatus is engageable with a computer numeric controlled machine. The method of forming a keyway in a workpiece includes a reciprocating, chiseling motion for removing layers of material from the workpiece.

Abstract: A cutting tool for machining stainless steel including a tool nose geometry with several facets. The tool includes a nose comprising a leading edge which chips and removes stock from the edge surface, the leading edge bearing adjacent a calibration edge post which the bore is rotated to thereby calibrate the bore. The calibration edge or facet has a length equal to the feed per revolution. This same side has a cutting angle length equal to zero. A hollow cathode discharge method of TiCN coating with no more than three micron thickness is used. This coating method creates a high density of plasma vapor, does not contain micro particles, produces a very dense film which completely replicates the finish of the surface being coated, prevents buildup and increases tool performance. The leading facet preferably has a cutting edge angle with the tool direction of travel through the bore surface equal to 45°.

Abstract: According to the present invention there is provided a body at least partially coated with one or more refractory layers of which at least one layer essentially consist of &agr;-Al2O3. Said &agr;-Al2O3 layer consists of essentially equiaxed grains with an average grain size of <1 &mgr;m and with a bimodal grain size distribution with coarser grains with an average grainsize in the interval 0.5-1 &mgr;m and finer grains with an average grainsize of <0.5 &mgr;m. The Al2O3 layer further contains striated zones containing titanium (>5 at %) but no nitrogen or carbon. This particular microstructure is obtained by temporarily stopping the gases needed for the growth of the Al2O3 layer and introducing TiCl4.

Abstract: A cutting tool coated with diamond in which diamond is coated as a film on a substrate having a step 15 to 500 &mgr;m in height in the vicinity of a cutting edge on the rake surface and/or the flank surface. Only the diamond film in the vicinity of the cutting edge can be polished first, without polishing the film of the diamond formed centrally of the rake surface and/or the flank surface. This enables the maximum effect (sharpening of the cutting edge and prevention of welding formation at cutting edge) to be realized with the necessary minimum polishing (with a decreased polishing removal), without setting special conditions and which is suited as a finishing tool.

Abstract: A coated body having a multi-layer of &kgr;-Al2O3 and or &ggr;-Al2O3 or TiN applied by MTCVD (Medium Temperature Chemical Vapor Deposition) is disclosed. The multi-layers can be interspersed with layers of Ti(C,N) which can also be applied by MTCVD. The body which is coated is preferably a cemented carbide, cermet, ceramic and/or high speed steel and may be used as a metal cutting insert.

Abstract: A cutting insert is provided with a combination coating, comprising a wear-protection coating and an indicating layer. The indicating layer preferably is provided on the tool flank or flanks, meaning for radial inserts on the side surfaces and for tangential inserts on the bottom or top surface. The indicating layer is sensitive enough, so that even a short-term use of the adjacent cutting edge leaves clear traces on the indicating layer. In the process, the indicating layer is discolored and/or worn down, so that underlying layers or materials with different colors become visible. As a result of the clear color contrast or brightness contrast, used cutting edges can be identified immediately. The use of the tool flanks as indicating surfaces has proven to be particularly advantageous because a tribological and possibly unfavorable coating can be provided, without this having a negative influence on the processing result of the cutting insert.

Abstract: A cutting tip having a three-layer laminated structure is provided. The tip is made from a disc-shaped three-layer laminate wherein a second layer consisting of a hard sintered compact of CBN or diamond is sandwiched by a first layer and a third layer consisting of a tool material such as cemented carbide. Prismatic blanks of rectangular cross-section are cut out by cutting the three-layer laminate in strips. Semi-completed tips of a desired shape are obtained by cutting up the prismatic blanks. Desired cutting edges are formed on the semi-completed tips to produce completed tips. Because prismatic blanks are obtained from a three-layer laminate and semi-completed tips are cut out from the prismatic blanks like this, the semi-completed tips can be obtained in large numbers, yield is high, and the manufacturing cost of the tip can be reduced.

Abstract: A polycrystalline tungsten carbide ceramic cutting insert with chip control is disclosed for high speed machining.

Abstract: There are disclosed a coated cutting tool which comprises a base material of a hard alloy comprising a hard phase of tungsten carbide and at least one material selected from a carbide, nitride and carbonitride of a metal selected from the Group 4, 5 and 6 of the Periodic Table and a mutual solid solution thereof and a binder phase of at least one element selected from Fe, Ni and Co, and a hard coating film formed on the surface of the base material by a CVD method, wherein the hard coating film has a columnar crystal layer comprising at least one material selected from a carbide, nitride and carbonitride of titanium, the columnar crystal layer contains large-sized particles and small-sized particles, and the ratio of the amounts of the large particles to the small particles is 3 to 50; and a method for producing the same which comprises forming the hard coating film by at least one coating film of a carbide, carbonitride and carbonitroxide of titanium using a hydrocarbon gas containing ethane as a carbon elem

Abstract: A cutting edge of a cutting tool is made of a polycrystalline hard sintered material containing at lest 20 vol % of CBN. A radius of curvature in cross section of a ridge of the cutting edge is between 5 &mgr;m and 30 &mgr;m. A flank and a rake face or negative land of the cutting tool are smoothly continued from the radius of curvature in cross section. The surface roughness of the ridge of the cutting edge is from 0.1 &mgr;m to 1.0 &mgr;m as an average roughness (Rz) of a ten point system.

Abstract: A chromium-containing coated cemented tungsten carbide cutting insert that has a substrate and a coating. The substrate comprises between about 5.7 and about 6.4 weight percent cobalt, between about 0.2 and about 0.8 weight percent chromium and the balance tungsten and carbon, and a coercive force of about 195 to 245 oersteds.

Abstract: A cutting tool and method for machining hardened steel including a substrate of polycrystalline cubic boron nitride having one or more layers of a hard refractory coating containing aluminum. The coating may contain a titanium aluminum nitride layer applied by a physical vapor deposition (PVD). Alternatively, the coating may include a layer of aluminum oxide applied by chemical vapor deposition.

Abstract: A method for tipping a cutter head of an end-milling cutter with a hard alloy material, and an end-milling cutter tipped with a hard alloy material. To equip the cutter head with particularly wear-resistant and impact-resistant hard alloy materials, the hard alloy material has particles of hard alloy melted carbide, which are linked together by a bonding agent, for example a solder.

Abstract: A throw-away tip 1 of the present invention has a rake face 5 formed on a surface of a base 2 and a flank 8 intersecting with the rake face 5. The intersection ridge between the rake face 5 and flank 8 defines a cutting edge 9. A sensor line 12 is made out of a conductive film extending along the cutting edge 9 and having a predetermined width. The sensor line 12 is provided in an electrically insulative relation with respect to the base 2. According to the present invention, one side edge L of the sensor line 12 is provided on the flank 8 substantially in parallel with the intersection ridge, while the other side edge U of the sensor line 12 is provided on the rake face 5 side from the intersection ridge.

Abstract: A tool component comprising an abrasive element presenting a cutting edge or point and a thermally conductive element having a thermal conductivity greater than the thermal conductivity of the abrasive element, wherein the thermally conductive element is in thermal contact with the abrasive element so as to conduct heat generated at the cutting edge or point away from such cutting edge or point. The thermally conductive element may be bonded to a substrate. The abrasive element may be PCBN and the thermally conductive element may be either CVD diamond or PCD or else the abrasive element may be PCD and the thermally conductive element may be CVD diamond.

Abstract: A chromium-containing coated cemented tungsten carbide cutting insert that has a substrate and a coating. The substrate comprises between about 10.4 and about 12.7 weight percent cobalt, between about 0.2 and about 1.2 weight percent chromium.

Abstract: A multi or single cutter reaming tool has a shaft and a shaped head with at least one cutter. The shaped head is produced from a blank having a base body of a base material on its envelope surface with at least one rectilinear or helical groove-shaped recess running around it, into which high hardness cutting material is sintered. The high hardness cutting material includes at least one cutter having cutting surfaces formed by the introduction of a chip groove by a grinding wheel into the base body and movement of the grinding wheel toward the high hardness cutting material.

Abstract: A coated cemented (binder alloy, e.g., cobalt-chromium alloy) tungsten carbide cutting insert that comprises a substrate and a coating. The substrate contains at least about 70 weight percent tungsten and carbon, between about 3 weight percent and about 12 weight percent cobalt, and at least 0.09 weight percent chromium. The substrate presents a surface zone of binder alloy enrichment that begins near (or at) and extends inwardly from a peripheral surface of the substrate. The coating includes a base layer that contains chromium.

Abstract: A cutting tool coated with diamond in which diamond is coated as a film on a substrate having a step 15 to 500 &mgr;m in height in the vicinity of a cutting edge on the rake surface and/or the flank surface. Only the diamond film in the vicinity of the cutting edge can be polished first, without polishing the film of the diamond formed centrally of the rake surface and/or the flank surface. This enables the maximum effect (sharpening of the cutting edge and prevention of welding formation at cutting edge) to be realized with the necessary minimum polishing (with a decreased polishing removal), without setting special conditions and which is suited as a finishing tool.

Abstract: A composite rotary tool includes at least first and second regions comprising first and second materials, respectively. The first and second regions are autogenously bonded and differ with respect to at least one characteristic such as, for example, modulus of elasticity, hardness, wear resistance, fracture toughness, tensile strength, corrosion resistance, coefficient of thermal expansion, or coefficient of thermal conductivity. A method for producing the composite rotary tool includes placing a first metallurgical powder into a first region of a void of a mold, and placing a second metallurgical powder into a second region of the void. The first metallurgical powder differs from the second metallurgical powder, and at least a portion of the first metallurgical is brought into contact with the second metallurgical powder. The mold is compressed to consolidate the first and second metallurgical powders to form a compact, and the compact subsequently is sintered.

Abstract: A reversible cutting tip for a cutting tool has a cutting wedge defined by a first face and a first flank. The cutting wedge has a clearance angle of 0° to 3°. The first flank is produced by applying a first coating to the cutting tip and the first face is produced by applying a second coating to the cutting tip. The tool is employed for removing cuttings from a workpiece by the cutting tips and for subsequently smoothing the crack surface of the workpiece, created by removing the cuttings, by employing the first flanks.

Abstract: A coated body having a multi-layer of &kgr;-Al2O3 and or &ggr;-Al2O3 or TiN applied by MTCVD (Medium Temperature Chemical Vapor Deposition) is disclosed. The multi-layers can be interspersed with layers of Ti(C,N) which can also be applied by MTCVD. The body which is coated is preferably a cemented carbide, cermet, ceramic and/or high speed steel and may be used as a metal cutting insert.

Abstract: A method for applying cutting elements to a tool for cutting or milling a metal item in a well is disclosed, along with the cutting element used in the method. The tool can include one or more blades extending outwardly or downwardly from the tool for cutting a metal item such as the wall of a casing string, or for removing a predetermined length of a casing string in a cutting action. The blade or blades have cutting elements positioned on the leading faces of the blades to engage the casing string or other metal item in the bore hole. Each cutting element is composed of a plurality of effective cutting faces. Each cutting face can have a substantially triangular shape, or a substantially square shape, or some other geometric shape. The cutting elements can be arranged in a random pattern. Each cutting element can be oriented in a random orientation relative to the blade.

Abstract: An elongate support member such as a boring bar. The support member includes a body with an exterior surface and an exterior region adjacent to the exterior surface thereof. The body has an interior region remote from the exterior surface. The interior region is contiguous with the exterior region so as to define an interface therebetween. The interior region is of a first hardness, and a portion of the exterior region adjacent to the exterior surface is of a second hardness wherein the second hardness is greater than the first hardness.

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

Abstract: The method of controlling the modulation pressure in an automatic transmission of a motor vehicle engine includes determining which of n types of engines is being controlled, converting a digitized measured engine load value to one of eight scaled binary values, converting a digitized measured engine speed value signal to one of 32 scaled binary values, combining the scaled binary values of both engine speed and load into an address word for addressing one of n.times.256 storage locations of a data storage device containing reference control data, addressing the storage location corresponding to the address word and transferring the contents of the storage location so addressed to a microprocessor, which generates a current controlling a modulation pressure valve connected to the transmission according to the predetermined engine speed and load dependent data.