SUMITOMO ELECTRIC HARDMETAL CORP. Patent applications |
Patent application number | Title | Published |
20150283625 | TWO-EDGE DOUBLE MARGIN DRILL - The problem of making it possible to shorten as much as possible the distance from a major margin to a minor margin of a two-edge double margin drill in an axial direction is addressed. An interval between major margins and respective minor margins, which are provided at outer peripheries of lands, are set at 80° to 100°, flank faces both include a flat second flank face and a flat third flank face, web thinning portions including web thinning surfaces having convex arcs in a direction of drill rotation in front view of the drill are formed at a central portion of an end, and an outer end of each web thinning surface in a radial direction is disposed behind an end of the corresponding minor margin in the direction of drill rotation and extends to the outer periphery of the corresponding land. | 10-08-2015 |
20150239050 | CUBIC BORON NITRIDE CUTTING TOOL - An object is to prolong the life of a cubic boron nitride cutting tool used for cutting a heat-resistant alloy. A cubic boron nitride cutting tool includes an edge tip made of a sintered cubic boron nitride compact having a thermal conductivity within the range of 20 to 70 W/m·K and including cubic boron nitride particles having an average particle diameter within the range of 0.5 μm to 2 μm; and a base metal that holds the edge tip at a corner portion of the base metal, wherein a cutting edge formed on the edge tip of the tool has a positive rake angle. | 08-27-2015 |
20150231711 | CUTTING INSERT AND FACE MILLING CUTTER USING THE SAME - An object is to provide a cutting insert for a milling cutter with which efficiency in machining can be increased. The cutting insert includes two polygonal main surfaces facing each other and side surfaces each connected to a corresponding side of each of the main surfaces. The side surfaces include a major side surface through which an attachment hole extends, a first minor side surface perpendicular to the major side surface, and a second minor side surface disposed between the first minor side surface and the major side surface. A ridge between each of the main surfaces and the major side surface forms a major cutting edge, and a ridge between each of the main surfaces and the second minor side surface forms a minor cutting edge. An angle between the major cutting edge and the minor cutting edge is 145° or larger. | 08-20-2015 |
20150191850 | SINGLE CRYSTAL DIAMOND AND DIAMOND TOOL - A single crystal diamond ( | 07-09-2015 |
20150064453 | SURFACE-COATED CUTTING TOOL - A surface-coated cutting tool of the present invention includes a base material and a coating formed on the base material, the coating includes one or two or more layers, a layer among these layers that abuts on the base material is a TiN layer, the TiN layer contains at least one element together with TiN, the element has a concentration distribution in a thickness direction of the TiN layer, and the concentration distribution includes a region where the concentration of the element decreases in a direction from the base material toward a surface of the coating. | 03-05-2015 |
20150037612 | SURFACE-COATED CUTTING TOOL AND METHOD OF MANUFACTURING THE SAME - A surface-coated cutting tool of the present invention includes a base material and a coating film formed on the base material. The coating film includes at least one TiB | 02-05-2015 |
20150016902 | SINTERED CUBIC BORON NITRIDE COMPACT TOOL - A tool includes, at least on its edge, a sintered cBN compact which includes cBN particles and a bonding phase, a plurality of flutes is formed on a rake face, each of the flutes having a starting end on the edge ridgeline and causing the edge ridgeline to be wavy, and the terminal end of the flute is disposed inwardly of the edge ridgeline. It is preferable that the flute width of the flute decreases with distance from the edge ridgeline, the flute depth of the flute decreases with distance from the edge ridgeline, and the rake face has a positive rake angle. | 01-15-2015 |
20140341664 | DIAMOND COATED TOOL - A diamond coated tool according to the present invention includes a base material, and a diamond layer coating a surface of the base material, the diamond layer containing a diamond, 1.0×10 | 11-20-2014 |
20140248968 | THREADING TOOL - An object of improvement is a threading tool that includes multiple cutting edges | 09-04-2014 |
20140147374 | OPTICAL COMPONENT AND METHOD FOR MANUFACTURING SAME - An optical component of the present invention is composed of a ZnSe polycrystal body, and the ZnSe polycrystal body is constituted by crystal grains with an average grain size larger than or equal to 50 μm and smaller than or equal to 1 mm and has a relative density higher than or equal to 99%. | 05-29-2014 |
20140133013 | OPTICAL COMPONENT - An optical component including: a first substrate body which is made of a platy member allowing infrared laser beam to be transmitted therethrough and having a refractive index of 2 to 4 with respect to the infrared laser beam, and which has an input surface where the infrared laser beam is incident, and an inclined surface inclined to the input surface at an angle of inclination, calculated in accordance with Formula (I): | 05-15-2014 |
20140119998 | METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGSTEN, APPARATUS FOR PRODUCING SODIUM TUNGSTATE, AND METHOD FOR PRODUCING SODIUM TUNGSTATE AQUEOUS SOLUTION - Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method. | 05-01-2014 |
20140112847 | METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGSTEN, APPARATUS FOR PRODUCING SODIUM TUNGSTATE, AND METHOD FOR PRODUCING SODIUM TUNGSTATE AQUEOUS SOLUTION - Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method. | 04-24-2014 |
20140056658 | CUTTING TOOL WITH REMOVABLE HEAD - A cutting head having a tapered shaft portion, a helical flute, and a flat shoulder surface is fastened to a shank having a front end surface, a tapered hole, and a helical flute through a fastening attachment in the form of a helical coil. The fastening attachment has a sectional shape substantially analogous in shape to a space defined between the helical flutes. The fastening attachment is fitted in one of the helical flutes, and is threaded into the other of the helical flutes until the shoulder surface is brought into close contact with the front end surface of the shank, and the outer peripheral surface of the tapered shaft portion is brought into close contact with the inner surface of the tapered hole, thus fastening the cutting head to the shank. | 02-27-2014 |
20140054275 | CUTTING TOOL AND METHOD AND APPARATUS FOR MANUFACTURING THE SAME - Provided is a technology for manufacturing cutting tools that is capable of providing cutting tools that have a cut surface whose surface is uniformly smooth and that have a stable performance. Provided are a cutting tool manufacturing method in which a cutting tool material is cut by using, as a laser beam, a laser beam formed by combining two linearly polarized laser beams so that the directions of polarization of the two linearly polarized laser beams are at right angles to each other; a cutting tool manufacturing method in which a circularly polarized laser beam is used as a laser beam; a cutting tool manufacturing method in which a randomly polarized laser beam is used as a laser beam; a cutting tool manufactured by the manufacturing method; a cutting tool manufacturing apparatus that includes means for generating a combined laser beam formed of two linearly polarized laser beams, the directions of polarization of the two linearly polarized laser beams being at right angles to each other and an optical system that guides the combined laser beam to the cutting tool material; a cutting tool manufacturing apparatus that includes means for generating a circularly polarized laser beam; and a cutting tool manufacturing apparatus that includes means for generating a randomly polarized laser beam. | 02-27-2014 |
20130291446 | TOOL MADE OF CUBIC BORON NITRIDE SINTERED BODY - A tool includes a cubic boron nitride sintered body at least at a tool working point. The cubic boron nitride sintered body contains cubic boron nitride, a heat insulating phase, and a binder phase. Cubic boron nitride is contained in the cubic boron nitride sintered body by not less than 60 volume % and not more than 99 volume %, and the heat insulating phase includes one or more types of first compound composed of one or more types of element selected from the group consisting of Al, Si, Ti, and Zr and one or more types of element selected from the group consisting of N, C, O, and B. The first compound is contained in the cubic boron nitride sintered body by not less than 1 mass % and not more than 20 mass % and it has an average particle size smaller than 100 nm. | 11-07-2013 |
20130279998 | SURFACE-COATED CUTTING TOOL - A surface-coated cutting tool excellent in wear resistance is provided. The surface-coated cutting tool of the present invention includes a base material and a coating formed on the base material. The coating includes an inner layer and an outer layer. The inner layer is a single layer or a multilayer stack constituted of two or more layers made of at least one element selected from the group consisting of group IVa elements, group Va elements, group VIa elements in the periodic table, Al, and Si, or a compound of at least one element selected from this group and at least one element selected from the group consisting of carbon, nitrogen, oxygen, and boron. The outer layer includes α-aluminum oxide as a main component and exhibits an equivalent peak intensity PR(024) of a (024) plane of x-ray diffraction of larger than 1.3. | 10-24-2013 |
20130260165 | CUBIC BORON NITRIDE SINTERED BODY TOOL - A cBN sintered body tool has the following feature. In at least one cross sectional surface of the cBN sintered body tool taken along a plane perpendicular to a joining surface having the largest area in joining surfaces between the cBN sintered body and the joining layer, a point C and a point D are assumed to represent points away by ¼ of the length of a line segment connecting a point A and a point B shown in a figure. A value obtained when an area of a region surrounded by a line segment connecting the point C and the point D, the first cBN particle, the second cBN particle, and the binder phase is divided by the length of the line segment connecting the point A and point B to each other is 0.14-0.6 μm. | 10-03-2013 |
20130236240 | JOINED PRODUCT - The present joined product is a joined product with a cemented carbide sintered compact serving as a first material to be joined and a cBN sintered compact serving as a second material to be joined, wherein: the first material to be joined and the second material to be joined are joined together via a joining material disposed therebetween and containing titanium (Ti); and a titanium nitride (TiN) compound layer having a thickness of 10-300 nm is produced at an interface between the second material to be joined and the joining material. | 09-12-2013 |
20130199351 | SURFACE-COATED SINTERED BODY - A surface-coated sintered body includes a sintered body of cubic boron nitride (cBN) and a surface coating layer formed on a surface thereof, the sintered body of cBN containing 20 to 99.5% by volume of cBN and a binder, the surface coating layer including an adhesion layer and at least one hard coating layer, the adhesion layer being a metal layer containing at least W and being formed to cover a portion of the surface of the sintered body of cBN, the hard coating layer being formed to cover the sintered body of cBN and the adhesion layer, a ratio of cBN particles in contact with the adhesion layer to a total number of cBN particles in contact with the adhesion layer or the hard coating layer in the surface of the sintered body of cBN being 0.01 to 20%. | 08-08-2013 |
20130164527 | SURFACE-COATED CUTTING TOOL AND MANUFACTURING METHOD THEREOF - A surface-coated cutting tool according to the present invention includes a base material and a coating film formed on the base material. The coating film includes at least one TiCN layer. The TiCN layer has a columnar crystal region. The columnar crystal region is characterized by having a composition of TiC | 06-27-2013 |
20130152481 | SURFACE COATED CUTTING TOOL - A surface coated cutting tool with a high level of both wear resistance and defect resistance in balance is provided. The surface coated cutting tool of the present invention includes a base material, and a coat film formed on the base material. The coat film includes at least one titanium carbonitride layer. The titanium carbonitride layer has a maximum value for an orientational index TC (220) among texture coefficients TC (hkl). When an indentation hardness of a standard block for hardness is Hs and an indentation hardness of the titanium carbonitride layer is Ht, the average value of the relative hardness Ht/Hs for a plurality of times of measurement is greater than or equal to 3. The difference between the maximum value Ht | 06-20-2013 |
20130101365 | SURFACE-COATED CUTTING TOOL - The surface-coated cutting tool of the present invention is characterized in that a region of 10 μm in a surface of the base material from point a′ to point b′ has two to seven cracks with a width of not more than 200 nm, or two to ten pores are present per length of 10 μm in the surface of the base material from point a′ to point b′, where points a′ and b′ are points defined respectively by lines drawn perpendicularly from points a and b to the surface of the base material where point a is a position located away from an edge ridgeline toward a rake face by distance La and point b is a position located away from the edge ridgeline toward a flank face by distance Lb. | 04-25-2013 |
20130079215 | SINTERED CUBIC BORON NITRIDE COMPACT AND SINTERED CUBIC BORON NITRIDE COMPACT TOOL - It is an object of the present invention to provide a sintered cBN compact having excellent wear resistance and fracture resistance even in machining centrifugally cast iron having a property of being difficult to machine, and to provide a sintered cBN compact tool. A sintered cBN compact of the present invention contains 20% by volume or more and 65% by volume or less of cBN and, as a binder, 34% by volume or more and less than 80% by volume of Al | 03-28-2013 |
20130045057 | SURFACE-COATED CUTTING TOOL - A surface-coated cutting tool excellent in wear resistance is provided. The surface-coated cutting tool of the present invention includes a base material and a coating formed on the base material. The coating includes an inner layer and an outer layer. The inner layer is a single layer or a multilayer stack constituted of two or more layers made of at least one element selected from the group consisting of group IVa elements, group Va elements, group VIa elements in the periodic table, Al, and Si, or a compound of at least one element selected from this group and at least one element selected from the group consisting of carbon, nitrogen, oxygen, and boron. The outer layer includes α-aluminum oxide as a main component and exhibits an equivalent peak intensity PR(024) of a (024) plane of x-ray diffraction of larger than 1.3. | 02-21-2013 |
20130016425 | OPTICAL ELEMENTAANM Kusunoki; YukihisaAACI Itami-shiAACO JPAAGP Kusunoki; Yukihisa Itami-shi JP - An optical element includes a substrate and an infrared anti-reflective film. The substrate is made of ZnSe, and the infrared anti-reflective film is formed on at least one surface of the substrate. The infrared anti-reflective film includes a low-refractive-index layer made of BaF | 01-17-2013 |
20130000213 | TOOL MADE OF CUBIC BORON NITRIDE SINTERED BODY - A tool made of a cubic boron nitride sintered body which has a long life in a stable manner in any application of cutting and plastic working is provided. The tool made of the cubic boron nitride sintered body according to the present invention includes a cubic boron nitride sintered body at least at a tool working point and it is characterized by satisfying an Equation (I) and any one of an Equation (II) and an Equation (III) | 01-03-2013 |
20120328506 | METHOD FOR PRODUCING AMMONIUM TUNGSTATE AQUEOUS SOLUTION - A method for producing an ammonium tungstate aqueous solution includes the steps of: adding sulfuric acid to a solution containing tungstate ions; bringing the solution having the sulfuric acid added therein, into contact with an anion exchange resin; and bringing the anion exchange resin into contact with an aqueous solution containing ammonium ions. | 12-27-2012 |
20120302425 | CUBIC BORON NITRIDE SINTERED BODY TOOL - The cubic boron nitride sintered body tool of the present invention has a cubic boron nitride sintered body including cubic boron nitride particles and a binder phase at at least a cutting edge. The cubic boron nitride sintered body includes 40-70 volume % of cubic boron nitride particles. The binder phase includes a first component and a second component. The first component includes TiC, and the second component includes one or both of TiB | 11-29-2012 |
20120282050 | SURFACE-COATED SINTERED BODY - There is provided a surface-coated sintered body formed of a sintered body of cubic boron nitride with a sufficiently adhesive surface coating layer thereon. The present surface-coated sintered body includes a sintered body of cubic boron nitride and a surface coating layer formed on a surface thereof, the sintered body of cubic boron nitride including 20-99.5% by volume of cubic boron nitride and a binder, the surface coating layer including an adhesion layer and at least one hard coating layer, the adhesion layer being a metal layer including at least W, and being formed to cover a surface of the sintered body of cubic boron nitride, the hard coating layer being formed to coat the adhesion layer, the adhesion layer being configured of an amorphous state and/or ultrafine particles having an average particle size equal to or smaller than 5 nm. | 11-08-2012 |
20120282049 | SURFACE-COATED CUTTING TOOL - Wear resistance and chipping resistance are both highly established for a surface-coated cutting tool. The surface-coated cutting tool of the present invention includes a base material and a coat film formed on the base material. A first coat layer at a chamfer portion has residual stress that exhibits a minimal value at a depth A within 2 μm from the surface, and that is greater than or equal to −7 GPa and less than or equal to −1 GPa. | 11-08-2012 |
20120275870 | SURFACE-COATED CUTTING TOOL AND MANUFACTURING METHOD THEREOF - A surface-coated cutting tool according to the present invention includes a base material and a coating film formed on the base material. The coating film includes at least one TiCN layer. The TiCN layer has a columnar crystal region. The columnar crystal region is characterized by having a composition of TiC | 11-01-2012 |
20120270037 | SURFACE-COATED CUTTING TOOL AND MANUFACTURING METHOD THEREOF - A surface-coated cutting tool according to the present invention includes a base material and a coating film formed on the base material. The coating film includes at least one TiCN layer. The TiCN layer has a columnar crystal region. The columnar crystal region is characterized by having a composition of TiC | 10-25-2012 |
20120231227 | SURFACE-COATED CUTTING TOOL - A surface-coated cutting tool having excellent abrasion resistance and defect resistance is provided. The surface-coated cutting tool includes a substrate and a covering layer, wherein the covering layer includes one or two or more sublayers, a thickness T | 09-13-2012 |
20120230786 | CUBIC BORON NITRIDE SINTERED BODY AND CUBIC BORON NITRIDE SINTERED BODY TOOL - cBN sintered body includes cBN and a binder phase, wherein a content of the cBN is 82-98 volume %, and in a cross section of the cBN sintered body, an isolated binder phase having an area of 0.05-0.5 μm | 09-13-2012 |
20120219373 | METHOD FOR PROCESSING DIFFICULT-TO-CUT CAST IRON - In a pilot hole of a workpiece made of a difficult-to-cut cast iron, a cutting tool having a leading end to which a cutting insert is attached is inserted to cut the surface of the wall of the pilot hole. At this time, the cutting tool rotates about an axis (α) and also revolves about another axis (β), so that contouring is performed on the workpiece by the tool. The cutting insert is formed of a sintered body having a CBN content of not less than 85% by volume, and the cutting insert has a thermal conductivity of not less than 100 W/(mK). | 08-30-2012 |
20120213601 | CUTTING TOOL - A cutting tool having excellent chip treatability and adhesion resistance is provided. The cutting tool includes a hard sintered body in at least a cutting edge and has a rake face and a flank face. The rake face has a chip breaker in a protruded or uneven shape. The hard sintered body contains at least 20% by volume of cubic boron nitride. A region of not more than 20 μm from a surface of the hard sintered body on the rake face side includes A-structures made of cubic boron nitride and B-structures made of at least one selected from the group consisting of hexagonal boron nitride, amorphous boron nitride, and boron oxide. The volume ratio of the B-structures to the sum of the A-structures and B-structures, B/(A+B), is not less than 5% by volume and not more than 90% by volume. | 08-23-2012 |
20120208006 | CUBIC BORON NITRIDE SINTERED BODY TOOL - A cubic boron nitride sintered body tool has, at least at a cutting edge, a cubic boron nitride sintered body composed of a cubic boron nitride particle and a binder phase. The binder phase contains at least Al | 08-16-2012 |
20120144753 | CEMENTED CARBIDE AND CUTTING TOOL USING SAME - There are provided a cemented carbide high in thermal diffusivity and excellent in wear resistance, and a cutting tool including a base material formed of this cemented carbide. The cemented carbide is a WC based cemented carbide in which a hard phase mainly constituted of WC grains is bound by a binder phase mainly constituted of Co, and is used for a cutting tool. The binder phase is substantially constituted of Co, or Co and Ni. A total content of Co and Ni is not less than 4.5 mass % and not more than 15 mass %. In this cemented carbide, the WC grains have an average diameter of not less than 0.4 μm and not more than 4 μm. | 06-14-2012 |
20120034474 | JOINED PRODUCT - A joined product according to the present invention is a joined product including a cemented carbide sintered compact serving as a first material to be joined and a cBN sintered compact or a diamond sintered compact serving as a second material to be joined. The first material to be joined and the second material to be joined are joined by a joining material that forms a liquid phase at a temperature exceeding 800° C. and lower than 1000° C. and that is placed between the first material to be joined and the second material to be joined. The first material to be joined and the second material to be joined are joined by resistance heating and pressing at a pressure of 0.1 to 200 MPa. | 02-09-2012 |
20120021199 | SURFACE-COATED CUTTING TOOL - Provided is a surface-coated cutting tool combining superior heat resistance, superior wear resistance, and superior lubricity. A surface-coated cutting tool of the present invention includes a substrate and a coating formed on the substrate, and the coating is characterized in that the coating is formed by physical vapor deposition and includes one or more layers, that at least one of the one or more layers is a first coating layer, and that the first coating layer contains aluminum and nitrogen, has a thermal effusivity of 2,000 to 5,000 J·sec | 01-26-2012 |
20120009403 | SURFACE-COATED CUTTING TOOL - Provided is a surface-coated cutting tool combining superior heat resistance, superior wear resistance, and superior lubricity with high adhesion between a substrate and a coating. A surface-coated cutting tool of the present invention includes a substrate and a coating formed on the substrate, and the coating is characterized in that the coating is formed by physical vapor deposition and includes one or more layers, that at least one of the one or more layers is a first coating layer, that the first coating layer contains aluminum and nitrogen, has a thermal effusivity of 2,000 to 5,000 J·sec | 01-12-2012 |
20110300040 | METHOD FOR PRODUCING SODIUM TUNGSTATE, METHOD FOR COLLECTING TUNGSTEN, APPARATUS FOR PRODUCING SODIUM TUNGSTATE, AND METHOD FOR PRODUCING SODIUM TUNGSTATE AQUEOUS SOLUTION - Provided are a method for producing sodium tungstate by supplying an oxidant made of sodium nitrate or sodium nitrite to bring a tungsten containing material and the oxidant into contact with each other in an atmosphere containing oxygen to thereby continuously produce a reaction product; a method for collecting tungsten using the method; and an apparatus for producing sodium tungstate. Also provided are a method for producing a sodium tungstate aqueous solution in which a reductant is introduced into a melt containing the above-described reaction product which is then dissolved in water; and a method for collecting tungsten using the method. | 12-08-2011 |
20110268145 | OPTICAL COMPONENT - At least one surface of a plate member made of ZnSe has a concave-and-convex structure in which a projecting section and a groove section are formed at a spatial cycle equal to or lower than the wavelength of carbon dioxide laser light to thereby provide a substrate body. On a surface of the concave-and-convex structure, an antireflection film is layered that has a lower refractive index than that of ZnSe to carbon dioxide laser light. By this configuration, the polarization state of transmitted carbon dioxide laser light is converted from a linear polarization to a circular polarization or the like. | 11-03-2011 |
20110262700 | SURFACE-COVERED CUBIC BORON NITRIDE SINTERED BODY TOOL AND METHOD OF MANUFACTURING THE SAME - A surface-covered CBN sintered body tool includes a base material formed with a cubic boron nitride (CBN) sintered body and a surface covering film covering a surface of the base material, and has a nega-land exposing the CBN sintered body in at least a portion thereof and a flank having the surface covering film formed thereon. With this, the surface-covered CBN sintered body tool having high defect resistance and wear resistance can be provided. The surface covering film preferably includes a nitride or a carbonitride of a compound including at least one element selected from the group consisting of Ti, Cr, Zr, and V and at least one element selected from the group consisting of Al, Si and B, or a nitride or a carbonitride of Ti. | 10-27-2011 |
20110250394 | DIAMOND COATED TOOL - The present invention provides a diamond coated tool which is resistant to exfoliation at an interface between a base material and a diamond layer. The diamond coated tool of the present invention is a diamond coated tool including a base material and a diamond layer coating a surface of the base material, and characterized in that the surface of the base material has an arithmetic average roughness Ra of not less than 0.1 μm and not more than 10 μm and an average length of roughness profile elements RSm of not less than 1 μm and not more than 100 μm, and that the diamond layer has a plurality of cavities extending from a portion bordering on the base material in a crystal growth direction. | 10-13-2011 |
20110247929 | DIAMOND ELECTRODE AND METHOD FOR MANUFACTURING DIAMOND ELECTRODE - A diamond electrode having an oxidation resistant diamond film which will not separate from the electrode during electrolysis with highly oxidizing materials. The thickness of the diamond film is 20 pm or more and the diamond film should preferably cover opposite side surfaces of a substrate in such a manner as to also cover end surfaces | 10-13-2011 |
20110235163 | COMPOSITE PHOTONIC STRUCTURE ELEMENT, SURFACE EMITTING LASER USING THE COMPOSITE PHOTONIC STRUCTURE ELEMENT, WAVELENGTH CONVERSION ELEMENT, AND LASER PROCESSING DEVICE USING THE WAVELENGTH CONVERSION ELEMENT - A composite photonic structure element comprises a photonic crystal and multilayer films. The photonic crystal is formed by alternately laminating a plurality of sets of an active layer having a nonlinear effect for converting a fundamental wave into a second harmonic and an inactive layer having no nonlinear effect, and is constructed such that the energy of the fundamental wave coincides with a photonic bandgap end. Each of the multilayer films is formed by laminating a plurality of sets of two kinds of thin films having different refractive indexes and reflects the fundamental wave. The multilayer films are connected to both ends of the photonic crystal. The fundamental wave enters one of end faces and is reciprocally reflected between resonators having the multilayer films, so that the intensity of the fundamental wave is enhanced within the photonic crystal. The fundamental wave is converted into a second harmonic in the active layer, and the second harmonic is taken out from the other end face. | 09-29-2011 |
20110211922 | BALL END MILL - A ball end mill in which a ball end cutting edge ( | 09-01-2011 |
20110081215 | TWIST DRILL - Provided is a double-angle twist drill that increases the quality of drilling without increasing the amount of manufacturing work or the like. A secondary cutting edge | 04-07-2011 |
20110020082 | JOINED PRODUCT - There is provided a joined product suitable as a cutting tool that is fit for high-speed cutting, CVD coating process and the like, and does not cause a reduction in joint strength of a joining layer even if a high temperature exceeding a temperature at which a brazing filler forms the liquid phase is reached during cutting. Specifically, the joined product includes a cemented carbide sintered compact serving as a first material to be joined and a cBN sintered compact or a diamond sintered compact serving as a second material to be joined. The first material to be joined and the second material to be joined are joined by a joining material that does not form a liquid phase at a temperature lower than 1000° C. and that is placed between the first material to be joined and the second material to be joined. The joining is performed by resistance heating and pressing at a pressure of 0.1 to 200 MPa. | 01-27-2011 |
20110011831 | METHOD FOR MANUFACTURING DIFFRACTIVE OPTICAL ELEMENT - There is provided a method for manufacturing a diffractive optical element that can suppress the generation of heat from the inside of an insulative substrate and stabilize an etching rate. A method for manufacturing a diffractive optical element composed of an insulative substrate whose surface has a bumpy structure includes a selecting step of selecting an insulative substrate having an electrical resistivity equal to or higher than a certain value by measuring electrical resistivity of insulative substrates; and an etching step of forming a bumpy structure by dry etching in a surface of the insulative substrate selected in the selecting step. | 01-20-2011 |
20100260561 | SURFACE COATED CUTTING TOOL - A surface-coated cutting tool of the present invention includes a substrate and a coated layer formed on the substrate, and the coated layer is a physical-vapor-deposition layer having a thickness of 10 μm or more. A surface region having a thickness of 1 μm from a surface of the coated layer includes a first region whose integrated residual stress is a compressive stress and a second region whose integrated residual stress is a tensile stress, and the integrated residual stress of the surface region falls within the range of −1.5 to 1.5 GPa in any region included in the surface region. | 10-14-2010 |
20100196108 | END MILL - It is an object of the present invention to effectively suppress the occurrence of burrs in machining of a fiber-reinforced composite material, etc., using an end mill. An end mill includes first cutting edges | 08-05-2010 |
20100166510 | TOOL WITH INTERNAL FLUID PASSAGE - A tool has a shank and a cutting blade mounted on the shank. The tool also includes an internal fluid passage for drawing in, together with air, chips produced when the cutting blade machines a workpiece. The internal fluid passage comprises a through hole made in the shank, at least one main inlet hole for drawing in the chips together with the air, the main inlet hole being made in the cutting blade and being in fluid communication with the through hole, and at least one sub-inlet hole for drawing in at least the air, the sub-inlet hole being made in the shank and being in fluid communication with the through hole. The chips can efficiently be discharged from the tool without being deposited in the internal fluid passage, by the air which flows at a suitable speed through the internal fluid passage and draws the chips, regardless of the diameter of the tool. | 07-01-2010 |
20100146865 | POLYCRYSTALLINE DIAMOND - An object is to provide polycrystalline diamond applicable to diverse applications; and a water jet orifice, a stylus for gravure printing, a scriber, a diamond cutting tool, and a scribing wheel that include such polycrystalline diamond. This object is achieved by polycrystalline diamond obtained by converting and sintering non-diamond carbon under an ultrahigh pressure and at a high temperature without addition of a sintering aid or a catalyst, wherein sintered diamond grains constituting the polycrystalline diamond have an average grain diameter of more than 50 nm and less than 2500 nm and a purity of 99% or more, and the diamond has a D90 grain diameter of (average grain diameter+average grain diameter×0.9) or less. | 06-17-2010 |
20100065537 | LIGHT CONDENSING OPTICAL SYSTEM, LASER PROCESSING METHOD AND APPARATUS, AND METHOD OF MANUFACTURING FRAGILE MATERIAL - A condensing optical system having a condensed light spot with a small size and a large focal depth without causing a problem of a decrease in intensity of the condensed light spot or discontinuity of an intensity distribution in front and rear areas of a focal position is provided. The condensing optical system that condenses a laser beam generated by a laser source at a predetermined focal length is designed to satisfy Expressions (a) to (d), thereby producing 3rd and 5th spherical aberrations: | 03-18-2010 |
20100040423 | INDEXABLE INSERT - An indexable insert ( | 02-18-2010 |
20100038235 | DIAMOND ELECTRODE, TREATMENT DEVICE AND METHOD FOR MANUFACTURING DIAMOND ELECTRODE - The present invention provides a diamond electrode that, in waste water treatment or production of functional water by using electrolysis, does not cause contamination of a solution or release of toxic substances, achieves enhancement of the energy efficiency, has excellent durability, and can endure prolonged use without damage. The present invention further provides a treatment device where the above electrode is used, and a method for manufacturing the above electrode. In a diamond electrode according to the present invention, the electrode includes a conductive diamond film covering one surface of a substrate. Assuming that the thickness of the substrate is T (μm) and the thickness of the conductive diamond film is t | 02-18-2010 |
20100034606 | THROW-AWAY DRILL AND TIP ARRANGEMENT METHOD FOR THE DRILL - An object is to provide an indexable drill which has cutting edges formed of a plurality of indexable inserts and which provides stable performance so that the accuracy of entrance hole diameter and exit hole diameter is improved and generation of burrs at the hole exit can be suppressed. | 02-11-2010 |
20090311056 | INDEXABLE INSERT - A indexable insert ( | 12-17-2009 |
20090301865 | DIAMOND ELECTRODE, METHOD FOR PRODUCING SAME, AND ELECTROLYTIC BATH - A diamond electrode includes a conductive silicon substrate having a plurality of pores. The diamond electrode also includes a conductive diamond covering the conductive silicon substrate. The inner wall surfaces of the plurality of pores are at an angle of 60° to 85° with respect to a substrate of the conductive silicon substrate. | 12-10-2009 |
20090297835 | COATED CUTTING TOOL - The present invention relates to a coated cutting tool ( | 12-03-2009 |
20090274525 | INDEXABLE INSERT - An indexable insert ( | 11-05-2009 |
20090269150 | INDEXABLE INSERT - An indexable insert ( | 10-29-2009 |
20090245950 | INDEXABLE INSERT WITH NICK - An indexable insert with nicks for a rotary tool includes plurality of nicks are provided in an upper surface serving as a flank face. The nicks have their ends in the upper surface. The nicks divide a ridge line serving as a main cutting edge in a longitudinal direction. Each nick has a width gradually increasing toward the end. | 10-01-2009 |
20090245946 | CUBIC BORON NITRIDE RADIUS END MILL - A cubic boron nitride radius end mill includes a sintered cubic boron nitride compact bonded to an end of a main body, and a cutting edge provided on the sintered cubic boron nitride compact. The wedge angle θt of the cutting edge is constant over the entire region of the cutting edge. A negative rake face is disposed on a face so as to extend over the entire region of the cutting edge, and the rake angle θn of the negative rake face satisfies the relationship −30°≦θn≦−50°. A joint cutting edge is disposed between an end cutting edge and a radius cutting edge in the cutting edge, the joint cutting edge having a concave angle γ0 which is smaller than the concave angle γ1 of the end cutting edge and which satisfies the relationship 0.5°≦γ0 ≦2°. | 10-01-2009 |
20090232611 | INDEXABLE CUTTING INSERT AND METHOD FOR PRODUCING THE SAME - An indexable cutting insert ( | 09-17-2009 |
20090202314 | BORING TOOL AND HOLDER FOR THE SAME - One object of the present invention is to increase stability for fixing a cutting tool with a holder formed of a sleeve, and to improve machining accuracy of a boring tool using the holder and prevent chipping of a cutting edge. In a holder for a boring tool holding a bar-shaped cutting tool by receiving it in a center hole in a sleeve and clamping it with clamp means, the sleeve is provided with a slit cutting a region from the center hole in the sleeve to an outer periphery surface thereof lengthwise from a front end to a longitudinal partway portion of the sleeve, and is further provided with a fastener tightening a slit-formed portion of the sleeve to change an inner diameter of the center hole. | 08-13-2009 |
20090097933 | SURFACE-COATED CUTTING TOOL - A surface-coated cutting tool includes a coating layer ( | 04-16-2009 |
20090067938 | INDEXABLE CUTTING INSERT - An indexable cutting insert ( | 03-12-2009 |
20090003944 | Indexable Insert - An indexable insert ( | 01-01-2009 |
20080292905 | Surface-Coated Cutting Tool - A surface-coated cutting tool comprising a substrate, and a coating formed thereon, characterized in that the coating includes a first coating containing TiCN and a second coating containing α-type Al | 11-27-2008 |
20080292415 | Cutting Tool for High-Quality High-Efficiency Machining and Cutting Method Using the Same - It is an object to provide a cutting tool which can perform high-quality, high-efficiency machining of a workpiece such as hardened steel. | 11-27-2008 |
20080276544 | Cemented Carbides - The present invention provides a cemented carbide with superior strength and toughness by refining the WC in the alloy uniformly and by restricting the growth of coarse WC efficiently. In this cemented carbide, WC with a mean particle diameter of no more than 0.3 microns serves as a hard phase and at least one type of iron group metal element at 5.5-15 percent by mass serves as a binder phase. In addition to this hard phase and binder phase, this cemented carbide contains 0.005-0.06 percent by mass of Ti, Cr at a weight ratio relative to the binder phase of at least 0.04 and no more than 0.2, with the remaining portion being formed from inevitable impurities. In particular, this cemented carbide does not contain Ta. | 11-13-2008 |
20080219791 | INDEXABLE INSERT AND DRILL USING THE SAME - An indexable insert for a drill includes a chip breaker for disposing chips, provided at an upper face thereof along a cutting edge. The chip breaker has at least one recess. The recess is retracted from an end of the chip breaker near the cutting edge toward the center of the insert by 0.2 mm or greater, or an end of the recess near a center hole of the insert communicates with the center hole. | 09-11-2008 |
20080206564 | GRANULAR DIAMOND AND DIAMOND ELECTRODE USING THE SAME - This invention provides a granular diamond consisting of: a columnar base formed by Nb, Ti or W and having a length in a longitudinal direction of not more than 30 mm and a maximum length in a direction perpendicular to the longitudinal direction of not more than 15 mm; and conductive diamond coating not less than 30% of a surface of the base, or a granular diamond including: a spherical base formed by Nb, Ti or W and having a diameter of not more than 15 mm; and conductive diamond coating not less than 50% of a surface of the base, and a diamond electrode having a great surface area and a high conductivity by using such many granular diamonds. | 08-28-2008 |