Comprising Tool Of Specific Chemical Composition Patents (Class 407/119)
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Patent number: 7789598Abstract: A surface coated cutting tool comprises a substrate and a hard layer formed on the surface of the substrate, and a contact angle of water ? on the rake face of the hard layer is in the range of 30 to 80°. A surface coated cutting tool comprises a substrate and a hard layer formed on the surface of the substrate, and a contact angle of water ?R on the rake face of the hard layer and a contact angle of water ?F on the flank face of the hard layer have a relation of ?R<?F. Thereby, excellent resistance to wear and fracture can be shown, leading to a excellent surface coated cutting tool.Type: GrantFiled: July 11, 2006Date of Patent: September 7, 2010Assignee: Kyocera CorporationInventors: Takahito Tanibuchi, Hirotoshi Itoh
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Patent number: 7771847Abstract: To provide a high cBN content ratio sintered body that improves fatigue life of the machined part and has a longer tool lifespan than conventional cBN sintered body tools by suppressing the production of the affected layer by machining formed on the machined surface of the workpiece to be cut and by promoting residual compression stress. That is a cBN sintered body according to the present invention is a cBN sintered body for high surface integrity machining having a cBN component of not less than 87% and not more than 99% by volume % and a thermal conductivity of 100 W/m·K or more; and the outermost surface of the cBN sintered body 1 is coated with a heat resistant film 2 having a thickness of 0.5 ?m to 12 ?m comprising a compound of at least one element selected from 4a, 5a, 6a group elements and Al, and at least one element selected from C, N, and O.Type: GrantFiled: May 30, 2006Date of Patent: August 10, 2010Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Satoru Kukino, Yoshihiro Kuroda, Tomohiro Fukaya, Katsumi Okamura
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Publication number: 20100196109Abstract: A cutting tool comprising a body, a cutting edge on at least one part of said body and a plasma deposited carbon coating layer provided on said cutting edge that is substantially free of macro-particles.Type: ApplicationFiled: June 26, 2007Publication date: August 5, 2010Applicant: NANOFILM TECHNOLOGIES INTERNATIONAL PTE LTDInventors: Xu Shi, Xiao Zhe Jin, Li Kang Cheah
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Patent number: 7765902Abstract: It is an object to provide a cutting tool which can perform high-quality, high-efficiency machining of a workpiece such as hardened steel. The cutting tool includes a finishing cutting edge 6 which initially cuts into the workpiece, and superfinishing cutting edges 7 for finishing the workpiece cut by the finishing cutting edge. The superfinishing cutting edges 7 project from the finishing cutting edge by a predetermined amount B in such a direction that the depth of cut of the superfinishing cutting edges increases. Each superfinishing cutting edge includes a burnishing portion 7a having a predetermined width L in the feed direction of the tool, and a wiper portion 7b. The superfinishing cutting edges 7 burnish the finished surface formed by the finishing cutting edge, while removing a affected layer formed by the finishing cutting edge.Type: GrantFiled: March 29, 2006Date of Patent: August 3, 2010Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Yoshihiro Kuroda, Satoru Kukino, Katsumi Okamura, Tomohiro Fukaya
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Publication number: 20100189519Abstract: The present invention concerns a rotary cutting tool (1) with a cylindrical supporting spindle (2) and several individual blades (3) with essentially radial cutting edges, helically ground and set at regular intervals on the outer surface of the spindle, each blade (3) having a rectilinear base (4) which inserts into a slot (5) of the same shape as said base, each individual blade (3) being mechanically fixed to the spindle (2), characterized in that it also comprises two covers (8, 9) fixed to the respective bases (8?, 9?) of the spindle (2) so as to reinforce the fixing of the blades (3).Type: ApplicationFiled: March 26, 2007Publication date: July 29, 2010Applicant: PRECICARBInventor: Gerard Kerf
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Patent number: 7762747Abstract: One aspect of this titanium carbonitride-based cermet insert has a microstructure including 75 to 90 area % of a hard phase and the balance as a binding phase, wherein the hard phase includes a first hard phase in which a core-having structure includes a TiCN phase and a peripheral portion includes a (Ti,W,Ta/Nb)CN phase, a second hard phase including a (Ti,W,Ta/Nb)CN phase, and a third hard phase including a TiCN phase, and the binding phase contains 18 to 33% of Co, 20 to 35% of Ni, 5% or less of Ti and Ta and/or Nb, and 40 to 60 mass % of W.Type: GrantFiled: June 13, 2006Date of Patent: July 27, 2010Assignees: Mitsubishi Materials Corporation, NGK Spark Plug Co., Ltd.Inventors: Toshiyuki Taniuchi, Masafumi Fukumura, Kei Takahashi, Tomoaki Shindo, Atsushi Komura, Hiroaki Takashima
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Patent number: 7758975Abstract: A coating, particularly for cutting tools, is presented which may be manufactured in a single PVD coating process allowing the making of two-color cutting tools in a simple manner. Between two metallic hard material layers of unlike color a separating layer 11 is provided which, like the other layers, is produced in the same PVD coating process. The separating layer (11) permits the abrasion of the top layer by sandblasting, brushing or the like in very short abrading periods.Type: GrantFiled: February 17, 2005Date of Patent: July 20, 2010Assignee: Walter AGInventor: Veit Schier
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Patent number: 7754316Abstract: The present invention relates to a CVD-coated cutting tool insert with a TiCxNy layer with a low tensile stress level of from about 50 to about 390 MPa and an ?-Al2O3 layer with a high surface smoothness with a mean Ra is equal to or less than about 0.12 ?m as measured by AFM-technique. This is obtained by subjecting the coating to an intensive wet blasting operation.Type: GrantFiled: October 17, 2007Date of Patent: July 13, 2010Assignee: Sandvik Intellectual Property ABInventors: Peter Littecke, Henrik Nordlund, Jan Kjellgren
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Publication number: 20100166512Abstract: Disclosed is a cutting tool having excellent wear resistance. Specifically disclosed is a cutting tool having a substrate and a coating layer formed on a surface of the substrate. The cutting tool is characterized in that the substrate contains at least cobalt; the coating layer includes at least a titanium nitride layer formed on the surface of the substrate, a titanium carbonitride layer formed on the surface of the titanium nitride layer, an intermediate layer formed on the surface of the titanium carbonitride layer and an aluminum oxide layer formed on the surface of the intermediate layer; the intermediate layer contains at least oxygen and titanium, and the aluminum oxide layer incorporates particles composed mainly of cobalt.Type: ApplicationFiled: February 27, 2007Publication date: July 1, 2010Applicant: Kyocera CorporationInventor: Takahito Tanibuchi
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Patent number: 7736734Abstract: The present invention relates to a cutting tool insert for metal machining comprising a substrate with a first coating and an outermost PVD-layer. The insert further comprises clearance faces and rake faces intersecting to form cutting edges having essentially no edge radius. The first coating has been removed so that the outermost PVD-layer is the only layer on the clearance face at least close to the cutting edge. The present invention also relates to a method of making such an insert. The inserts according to the present invention gives an increased tool life.Type: GrantFiled: December 20, 2006Date of Patent: June 15, 2010Assignee: Sandvik Intellectual Property ABInventor: Anders Jonsson
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Patent number: 7736733Abstract: The present invention relates to a coated cutting tool wherein a ceramic film is formed on a cemented carbide substrate. The substrate is equipped with a ridge line of a cutting edge upon which round honing or combination honing has been performed, a breaker disposed on a rake face connected to the ridge line of the cutting edge, a base face, and an insert hole for securing to a holder. The nose radius is set to at least 1.6 mm. The ceramic film is equipped with an ?-type aluminum oxide film. The ten-point average roughness Rz (5 microns reference length) is set to no more than 0.2 microns for the inside of the honed section, the flank face side of the honed section, and the rake face side of the honed section. The ten-point average roughness Rz is set to no more than 0.5 microns for the upper section of the breaker, the base face, and the area around the insert hole.Type: GrantFiled: March 11, 2005Date of Patent: June 15, 2010Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Minoru Itoh, Hideki Moriguchi, Akira Sakamoto
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Publication number: 20100135738Abstract: The present invention relates to a cutting tool for metal machining with improved wear properties, comprising a cutting tool substrate of cemented carbide, cermet, ceramics or a super hard material, and a wear resistant coating, wherein the wear resistant coating comprises a PVD Ti—Si—C—N layer, and a method of making thereof.Type: ApplicationFiled: April 18, 2008Publication date: June 3, 2010Applicant: Sandvik Intellectual Property ABInventors: Andreas Hedin, Mats Ahlgren
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Patent number: 7727621Abstract: The present invention relates to a cutting tool, e.g. carbide insert, solid carbide drill or mill or carbide tip, particularly for milling of steels, stainless steel, HRSA, titanium or any alloyed material from any of these groups, comprising a cemented carbide substrate and an aperiodic multilayer coating with: a substrate of cemented carbide having a composition of from about 8 to about 11 wt-% Co, from about 0.1 to about 0.5 wt-% Cr and balance essentially tungsten carbide and a coating which is essentially an aperiodic multilayer consisting of layers A+B+A+B+A . . . where the sublayers A and B consist of AlxTi1-xN and TiyAl1-yN respectively. The typical average thickness of each A+B sequence is in the range from about 30 to about 300 nm and the total thickness of the coating in the range from about 0.5 to about 20 ?m. The total chemical composition averaged over the whole coating consists of TizAl1-zN where z lies in the range from about 0.40 to about 0.70.Type: GrantFiled: December 5, 2006Date of Patent: June 1, 2010Assignee: Sandvik Intellectual Property ABInventors: Kjell Nordlöf, Maria Åstrand, Toril Myrtveit, Anders Lundquist, Mats Ahlgren
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Publication number: 20100129168Abstract: An object of embodiments according to the invention is to provide a cutting tool having good wear resistance, good sliding property and good fracture resistance. A cutting tool 1 comprising a substrate 2 and a coating layer 6 or a coating layer 9 which covers a surface of the substrate 2. The coating layer 6 or the coating layer 9 comprising a first layer 7 and a second layer 8. The first layer 7 comprises Ti1-a-b-c-dAlaWbSicMd(C1-xNx) when M is at least one selected from Nb, Mo, Hf and Y, 0.45?a?0.55, 0.01?b?0.1, 0?c?0.05, 0.01?d?0.1, 0?x?1). The second layer 8 comprises Ti1-e-f-gAleSifM?g(C1-yNy) when M? is at least one selected from Nb, Mo, Ta, Hf and Y, 0.50?e?0.60, 0?f?0.1, 0.05?g?0.15, 0?y?1).Type: ApplicationFiled: March 25, 2009Publication date: May 27, 2010Applicant: Kyocera CorporationInventors: Masahiro Waki, Tatsuyuki Nakaoka, Shuichi Tateno, Takashi Watanabe, Kenji Noda, Takahiko Makino
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Publication number: 20100119315Abstract: The CVD coating has at least one layer composed of a metallic hard material layer X having a thickness of from 10 to 90 nm and at least one further layer composed of a boron-doped metallic hard material layer Y having a boron content of from 0.005 to 5 atom % and a thickness of from 10 to 90 nm. At least one layer X adjoins a layer Y. Coatings according to the invention display a significantly improved wear resistance.Type: ApplicationFiled: March 31, 2008Publication date: May 13, 2010Applicant: CERATIZIT AUSTRIA GESELLSCHAFT M.B.H.Inventor: Martin Kathrein
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Publication number: 20100098506Abstract: The invention relates to a cemented carbide material having a hard phase including tungsten carbide (WC) grains having an average grain size of 0.3 microns or less and also including cobalt (Co) as a bonding phase. The material also includes cobalt tungsten carbide grains that have a smaller average grain size than that of the tungsten carbide grains. The cemented carbide material has use, among others, in making cutting tools.Type: ApplicationFiled: December 22, 2009Publication date: April 22, 2010Applicant: KYOCERA CORPORATIONInventors: Isamu TANAKA, Takeshi OHKUMA, Shintaro KUBO
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Patent number: 7700195Abstract: A cutting tool and process for the formation thereof. The cutting tool comprises a basic body (1) presenting an active end portion (2) coated with a diamond film obtained by the CVD growth technique, having superficial accidents (10) that are arranged and dimensioned to produce a substantial increase of the seating area for the diamond film and an increased degree of mechanical interference with the latter. This invention refers to the cutting tool above and to the process of obtaining said tool, to be generally used for cutting, drilling, abrading and trimming, and particularly to be coupled to ultrasonic systems.Type: GrantFiled: June 7, 2002Date of Patent: April 20, 2010Assignee: Fundacao De Amparo A Pesquisa Do Estado De Sao PauloInventors: Vladimir Jesus Trava Airoldi, Evaldo Jose Corat, Joao Roberto Moro
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Patent number: 7695222Abstract: An indexable insert (1) of the present invention includes a substrate (8) and a coating layer which includes inner layer and an outer layer. The inner layer includes an alumina layer or an alumna-containing layer serving as an outermost layer in contact with the outer layer, and the outer layer is composed of at least one metal selected from the group consisting of the periodic table group IVa elements, Va elements, and VIa elements, Al, and Si or a compound of at least one of the metals and at least one element selected from the group consisting of carbon, nitrogen, oxygen, and boron. In addition, the outer layer, in a portion involved in cutting, satisfies B/A?0.9 wherein A ?m is the average thickness on the flank face (3) side, and B ?m is the average thickness on the rake face (2) side.Type: GrantFiled: October 13, 2006Date of Patent: April 13, 2010Assignee: Sumitomo Electric Hardmetal Corp.Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
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Publication number: 20100086370Abstract: Provided is a surface coating film having a high degree of hardness and an excellent oxidation-resistance, and a method of manufacturing thereof, a cutting tool and a cutting machine. In the surface coating film, an oxidation-resistance layer containing, as a main component, a complex oxide of Li and at least Al, is coated on the outer surface of a base material, direct thereonto or through the intermediary of a highly hard coating layer.Type: ApplicationFiled: February 5, 2008Publication date: April 8, 2010Applicant: MITSUBISHI HEAVY INDUSTRIES ,LTD.Inventors: Ichiro Nagano, Taiji Kikuchi, Masakatsu Fujita, Yukio Kodama, Toyoaki Yasui, Katsunori Akiyama, Toshiya Watanabe, Chiaki Yasuda
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Patent number: 7687156Abstract: Embodiments of the present invention include methods of producing a composite article. A method comprises introducing a first powdered metal grade from a feed shoe into a first portion of a cavity in a die and a second powdered metal grade from the feed shoe into a second portion of the cavity, wherein the first powder metal grade differs from the second powdered metal grade in chemical composition or particle size. Further methods are also provided. Embodiments of the present invention also comprise composite inserts for material removal operations. The composite inserts may comprise a first region and a second region, wherein the first region comprises a first composite material and the second region comprises a second composite material.Type: GrantFiled: August 18, 2005Date of Patent: March 30, 2010Assignee: TDY Industries, Inc.Inventors: X. Daniel Fang, David J. Wills, Prakash K. Mirchandani
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Patent number: 7677843Abstract: A cutting implement comprises a substrate having a cutting edge, and plurality of hardfacing beads deposited on the substrate transverse to the edge of said substrate.Type: GrantFiled: May 10, 2007Date of Patent: March 16, 2010Assignees: Fraunhofer-Gesellschaft Zur Forderung der Angewandten Forschung E.V., Lund InternationalInventors: Anja Techel, Joseph Dillon
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Publication number: 20100061812Abstract: The invention relates to a method of producing a cutting tool at least partly coated with an inner CVD coating and an outer PVD coating comprising the manufacturing steps of depositing the CVD coating, subjecting the CVD coating at least partly to an intensive wet-blasting operation, followed by depositing the PVD coating. The invention also relates to a coated cutting tool comprising a cemented carbide substrate of 5-14 wt-% Co, 0-8 wt-% cubic carbides of Ti, Ta or Nb or a combination thereof, and balance WC, said substrate being at least partly coated with a 4-14 ?m thick coating comprising an inner CVD coating and an outer PVD coating wherein the CVD coating has compressive stresses.Type: ApplicationFiled: September 7, 2007Publication date: March 11, 2010Applicant: SANDVIK INTELLECTUAL PROPERTY ABInventor: Björn Ljungberg
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Patent number: 7674520Abstract: The present invention describes a cutting tool with improved properties for metal machining having a substrate of cemented carbide and a hard and wear resistant coating on the surface of said substrate. The coating is deposited by Physical Vapor Deposition (PVD). The coating is composed of metal nitrides in combination with alumina (Al2O3). The coating is composed of a laminar multilayered structure. The insert is further treated to have different outer layers on the rake face and flank face respectively.Type: GrantFiled: August 31, 2006Date of Patent: March 9, 2010Assignee: Sandvik Intellectual Property ABInventor: Veit Schier
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Publication number: 20100054875Abstract: 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.Type: ApplicationFiled: November 9, 2009Publication date: March 4, 2010Inventors: David R. Hall, Thomas Morris
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Publication number: 20100054871Abstract: The invention relates to a hard metal tool which rotates about its own longitudinal axis, has an l/d ratio of 2 to 200 and is intended for the drilling or milling of materials. The hard metal tool contains a hard material phase and a binder phase, wherein the main binder constituents are iron, nickel and cobalt, the iron content is between 50 and 90% by weight, the nickel content is between 10 and 30% by weight, the cobalt content is at most 30% by weight and the cobalt to nickel Co:Ni ratio is less than or equal to 1, based on % by weight.Type: ApplicationFiled: April 7, 2008Publication date: March 4, 2010Applicant: H.C. Starch GmbHInventor: Leo Prakash
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Patent number: 7670674Abstract: There is described a cutting tool with improved properties for metal machining having a substrate of cemented carbide and a hard and wear resistant coating on the surface of said substrate. The coating is deposited by Physical Vapor Deposition (PVD). The coating is composed of metal nitrides in combination with alumina (Al2O3). The coating is composed of a laminar multilayered structure. The insert is further treated to have different outer layers on the rake face, and flank face respectively.Type: GrantFiled: August 31, 2006Date of Patent: March 2, 2010Assignee: Sandvik Intellectual Property ABInventor: Veit Schier
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Publication number: 20100040424Abstract: An insert includes a silicon nitride sintered body including ?-Si3N4 as a main component, Mg, and a rare-earth element Re (Y, La, Ce, Er, Dy, Yb). A content of Mg in terms of MgO is 1.0-7.0 mol %, a content of Re in terms of an oxide thereof is 0.4-1.0 mol %, and a total content of Mg and Re is from 1.7 to less than 7.5 mol %. The insert has a graded composition in which oxygen content increases from a surface of the sintered body toward an inside thereof such that 0.8-1.5 mass % of oxygen is contained in a region of less than 0.5 mm inside from the surface, 1.1-2.3 mass % of oxygen is contained in a region of 0.5 mm or more inside from the surface, and a difference in oxygen content between the regions is 0.1-1.0 mass %.Type: ApplicationFiled: March 14, 2008Publication date: February 18, 2010Applicant: NGK SPARK PLUG CO., LTD.Inventors: Ryoji Toyoda, Yusuke Suzuki, Yuki Hatano
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Publication number: 20100040423Abstract: An indexable insert (1) of the present invention has a structure including at least a rake face (2) and a bearing surface (5), the indexable insert (1) including a substrate and a coating layer disposed on the substrate, wherein the coating layer includes one or more layers and satisfies the relationship 0.9>R1/R2, wherein R1 represents the surface roughness Rz of the coating layer in the rake face (2), and R2 represents the surface roughness Rz of the coating layer in the bearing surface (5).Type: ApplicationFiled: March 22, 2006Publication date: February 18, 2010Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
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Publication number: 20100034603Abstract: A surface coated tool comprises a substrate and a coating layer superimposed on the surface of the substrate and containing Ti and W in the form of nitride or carbonitride. The coating layer comprises a matrix and dispersed particles dispersed into the matrix. The W content of the dispersed particles is larger than the W content of the matrix, and a difference in the W content between the matrix and the dispersed particles is larger than a difference in other ingredient content. A cutting tool consisting of the surface coated tool and having a cutting edge is prepared, and the cutting edge of the cutting tool is brought into contact with a cutting object, and the cutting object is cut by the cutting tool.Type: ApplicationFiled: December 17, 2007Publication date: February 11, 2010Applicant: KYOCERA CORPORATIONInventors: Masahiro Waki, Masahito Matsuzawa
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Patent number: 7655293Abstract: A CVD-coated cutting tool insert with a TiCxNy-layer with a low tensile stress level of 10-300 MPa and an ?-Al2O3-layer with a high surface smoothness of <0.1 ?m as measured by AFM-technique is disclosed. This is obtained by subjecting the coating to a first intensive wet blasting operation with a slurry of F80 grits of Al2O3 followed by a second wet blasting treatment with a slurry of F320 grits of Al2O3.Type: GrantFiled: February 23, 2006Date of Patent: February 2, 2010Assignee: Sandvik Intellectual Property ABInventor: Björn Ljungberg
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Publication number: 20100014930Abstract: One aspect of this titanium carbonitride-based cermet insert has a microstructure including 75 to 90 area % of a hard phase and the balance as a binding phase, wherein the hard phase includes a first hard phase in which a core-having structure includes a TiCN phase and a peripheral portion includes a (Ti,W,Ta/Nb)CN phase, a second hard phase including a (Ti,W,Ta/Nb)CN phase, and a third hard phase including a TiCN phase, and the binding phase contains 18 to 33% of Co, 20 to 35% of Ni, 5% or less of Ti and Ta and/or Nb, and 40 to 60 mass % of W.Type: ApplicationFiled: June 13, 2006Publication date: January 21, 2010Applicants: Mitsubishi Materials Corporation, NGK Spark Plug Co., Ltd.Inventors: Toshiyuki Taniuchi, Masafumi Fukumura, Kei Takahashi, Tomoaki Shindo, Atsushi Komura, Hiroaki Takashima
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Publication number: 20100014931Abstract: A method and apparatus for distributing granular constituents within polycrystalline diamond composites is disclosed in one embodiment of the invention as including providing a mixture of diamond particles of various different sizes. This mixture is then agitated to substantially segregate the diamond particles within the mixture according to particle size. The segregated mixture may then be sintered to fuse the diamond particles together and thereby immobilize the diamond particles within the mixture. In selected embodiments, the mixture may be agitated while adjacent to a substrate material. The mixture may be fused to the substrate when the diamond particles are sintered.Type: ApplicationFiled: October 7, 2008Publication date: January 21, 2010Inventor: Terry R. Matthias
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Patent number: 7648314Abstract: A cutting pick comprising a cutting tip 10 formed such as from SiC-D and a metal pick body 11. The pick body 11 has a greater coefficient of thermal expansion than the cutting tip 10. The pick body 11 includes a generally cylindrical cavity 14 within which is received a generally cylindrical anchor portion 13. The tip 10 includes a coating 17 bonded to the outer surface of the anchor portion 13. An annulus 24 is left between the coating 17 and the cavity 14 within which is a solder or braze material which bonds to each of the coating 17 and the cavity 14. The pick body 11 employs the difference in thermal expansion to exert pressure on the anchor portion 13 to fix the tip 10 to the pick body 11.Type: GrantFiled: May 25, 2006Date of Patent: January 19, 2010Assignee: Sandvik Intellectual Property ABInventor: Steven Weaver
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Publication number: 20100003091Abstract: A shank has a mount reference surface formed with a mount seat having a mount seat surface inclined at a given inclined angle ?. A diamond raw material is held on the shank in an attitude such that a first bottom surface thereof is in tight contact with the mount seat surface, and a first apex is protruded forward nearly along a centerline of the shank. A portion of the first apex, protruding from the mount reference surface, is ground and removed as a given inclined angle ?. This causes a surface or its vicinity (in a value less thank approximately ±1°) to be formed as a raked face. The first bottom surface of the diamond raw material is held intact in tight contact with the mount seat surface to be integrally bonded thereto by active metal brazing, easily ensuring an increased bonding surface area to easily obtain increased bonding strength.Type: ApplicationFiled: October 5, 2007Publication date: January 7, 2010Applicants: OSG CORPORATION, Nissin Diamond Tool Mfg. Co. Ltd.Inventors: Harukazu Muraki, Youichiro Shimoda
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Publication number: 20090324348Abstract: A rotary drill bit for drilling a subterranean formation may comprise a bit body, a cutting element coupled to the bit body, and a torque-generating assembly configured to apply torque, either continuously or periodically, to the cutting element. The torque-generating assembly may be powered by the rotary motion of the rotary drill bit or may be hydraulically or electrically powered. The cutting element may comprise a substrate, a table of superabrasive material disposed on an end of the substrate, and at least one impelling feature formed along the exterior surface of the substrate. In addition, a method of rotating a cutting element coupled to a drill bit for drilling a subterranean formation may comprise providing a cutting element comprising a table bonded to a substrate, coupling the substrate of the cutting element to a drill bit body, and applying torque to the substrate of the cutting element.Type: ApplicationFiled: September 4, 2009Publication date: December 31, 2009Applicant: US SYNTHETIC CORPORATIONInventors: Craig H. Cooley, Timothy N. Sexton
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Publication number: 20090317199Abstract: In a cutting tool, if the outermost ceramic coating layer is a ?-Al2O3 coating layer, then certain microns of the ?-Al2O3 layer will be transformed into an ?-Al2O3 by instantaneous melting, vaporization and solidification. Further, if the outermost coating layer of the ceramic coating layers is an ?-Al2O3 coating layer, then the surface roughness will be enhanced since at least a portion of it will be melted, wherein the melted surface will be solidified with its surface flattened by the surface tension provided in a melted state.Type: ApplicationFiled: January 2, 2007Publication date: December 24, 2009Applicant: Taegu Tec , Ltd.Inventors: Dong Gil Ahn, Joo Wan Lee
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Patent number: 7635035Abstract: A polycrystalline diamond compact useful for wear, cutting, drilling, drawing and like applications is provided with a first diamond region remote from the working surface which has a metallic catalyzing material and a second diamond region adjacent to or including the working surface containing a non-metallic catalyst and the method of making such a compact is provided. This compact is particularly useful in high temperature operations, such as hard rock drilling because of the improved thermal stability at the working surface.Type: GrantFiled: August 24, 2005Date of Patent: December 22, 2009Assignee: US Synthetic CorporationInventors: Kenneth E. Bertagnolli, Michael A. Vail
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Publication number: 20090311056Abstract: A indexable insert (1) of the present invention has a structure including at least a rake face (2) and a bearing surface (5), the indexable insert (1) including a substrate and a coating layer disposed on the substrate, wherein the coating layer includes one or more layers, and at least one layer of the one or more layers covers the entire surface of the substrate and satisfies the relationship F1<F2, wherein F1 represents the residual stress in the rake face (2) and F2 represents the residual stress in the bearing surface (5).Type: ApplicationFiled: March 14, 2006Publication date: December 17, 2009Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
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Publication number: 20090311055Abstract: 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.Type: ApplicationFiled: October 4, 2007Publication date: December 17, 2009Inventors: Vincenzo Galota, Aldo Falchero, Guido Mancina
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Patent number: 7621974Abstract: A cutting tip for a drilling tool includes a cemented carbide cutting base, a diamond element supported by the cutting base, and a bonding layer formed between the cutting base and the diamond element in order to bond them. The bonding layer includes diffusion layers and in which one or two or more metals selected from a group consisting of Fe, Ni, Co, Ti, Zr, W, V, Nb, Ta, Cr, Mo, and Hf diffuses into at least one of the diamond or the cement carbide.Type: GrantFiled: March 27, 2007Date of Patent: November 24, 2009Assignee: Mitsubishi Materials CorporationInventors: Kazuo Yamamoto, Tadakazu Ohashi, Akhmadi Wardoyo
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Publication number: 20090274525Abstract: An indexable insert (1) according to the present invention has at least a rake face (2) and a seating face (5). The indexable insert (1) includes a substrate and a coating formed on the substrate. The substrate is exposed in the seating face (5) without the coating formed thereon.Type: ApplicationFiled: March 10, 2006Publication date: November 5, 2009Applicant: Sumitomo Electric Hardmetal Corp.Inventors: Naoya Omori, Yoshio Okada, Minoru Itoh, Susumu Okuno, Shinya Imamura
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Publication number: 20090269151Abstract: 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.Type: ApplicationFiled: July 6, 2009Publication date: October 29, 2009Applicant: Kennametal Inc.Inventors: Edward J. Oles, Alfred S. Gates, JR., Kent L. Reiner, William M. Alexander, IV, Jean-Pierre Genain
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Patent number: 7608333Abstract: Thermally stable diamond constructions comprise a diamond body having a plurality of bonded diamond crystals, a plurality of interstitial regions disposed among the crystals, and a substrate attached to the body. The body includes a working surface and a side surface extending away from the working surface to the substrate. The body comprises a first region adjacent the side surface that is substantially free of a catalyst material and that extends a partial depth into the diamond body. The first region can further extend to at least a portion of the working surface and a partial depth therefrom into the diamond body. The diamond body can be formed from natural diamond grains and/or a mixture of natural and synthetic diamond grains. A surface of the diamond body is treated to provide the first region, and before treatment is finished to an approximate final dimension.Type: GrantFiled: December 22, 2004Date of Patent: October 27, 2009Assignee: Smith International, Inc.Inventor: Ronald K. Eyre
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Publication number: 20090252566Abstract: A cutting insert (20) for a machine tool comprising a flat blade formed from polycrystalline diamond material and having a front face (21) thereon formed from the PCD phase (23) with at least one cutting edge (22) thereon, and a rear face formed from the second phase substrate (24), the rear face having serrations (25) therein formed within the second phase substrate (24), preferably substantially normal to each cutting edge.Type: ApplicationFiled: February 1, 2007Publication date: October 8, 2009Applicant: KENNAMETAL INC.Inventor: Gerald Minshall
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Patent number: 7597511Abstract: In a surface-coated cutting tool, (a) a Ti compound layer as a lower layer and (b) an ?-type Al2O3 layer as an upper layer having a crystal grain structure of an even polygonal shape (including an even hexagonal shape) and an elongate shape and containing Zr are deposited on the surface of a tool substrate. In the surface-coated cutting tool, the above mentioned crystal grains of which insides are divided by at least one crystal lattice interface with the constituent atom covalent lattice point type expressed by ?3 occupying 60% or more as an area ratio in the crystal grains of the upper layer.Type: GrantFiled: December 24, 2008Date of Patent: October 6, 2009Assignee: Mitsubishi Materials CorporationInventors: Kouhei Tomita, Michiyasu Nishiyama, Akira Osada, Eiji Nakamura
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Patent number: 7588620Abstract: A cutting tool comprised of a cemented carbide is provided. The cemented carbide is consisted of a composition including: a predetermined amount of at least one selected from specific carbide, nitride, and carbon nitride, except for cobalt and niobium; 0.01 to 0.08 mass % of oxygen; and the rest consisted of tungsten carbide and unavoidable impurities. The cemented carbide is further made up of a structure in which a tungsten carbide phase and a B1-type solid solution phase being expressed by M(CNO) or M(CO) where “M” is at least one selected from the group consisting of metals of the group IV, V, and VI in the periodic table, containing niobium as being essential, and containing oxygen at a rate of 1 to 4 atomic % are bound by a binder phase composed mainly of the cobalt. This achieves the cutting tool having a long tool life in high-speed interrupted cutting.Type: GrantFiled: March 26, 2007Date of Patent: September 15, 2009Assignee: Kyocera CorporationInventor: Takahito Tanibuchi
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Publication number: 20090221218Abstract: A tool for machining composite material parts and a machining machine including such a tool. The tool has a substantially cylindrical main body. The main body includes a polishing part with a diameter D1, with a main axis and an abrasive part with a diameter D2, with D2<D1, such abrasive part being centred on the main axis. The abrasive part includes, at its end at least one cutting element intended to enable penetrations of the tool into the composite material parts.Type: ApplicationFiled: October 24, 2006Publication date: September 3, 2009Applicant: AIRBUS FRANCEInventors: Didier Le Borgne, Jean-Benoit Chalet
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Patent number: 7581906Abstract: The present invention relates to ceramic cutting tools, such as, a aluminum oxide with zirconium oxide ceramic cutting tool with diffusion bonding enhanced layer and CVD coatings, particularly useful for machining modem metal materials. The method comprises a chemical reaction with a mixture including nitrogen and aluminum chloride introduced to form a diffusion bonding enhanced layer between the ceramic substrate and the CVD coatings. Thus formed diffusion bonding is highly adherent to the aluminum oxide with zirconium oxide ceramic substrate and significantly enhances the CVD coating properties, and thus improving the machining performance in terms of the tool life of zirconium-based aluminum oxide with zirconium oxide ceramic cutting tools.Type: GrantFiled: May 19, 2004Date of Patent: September 1, 2009Assignee: TDY Industries, Inc.Inventors: X. Daniel Fang, David J. Wills, Gilles Festeau
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Publication number: 20090214857Abstract: A surface coated cutting tool having, on a surface of a substrate, a hard coating layer including at least an aluminium oxide layer, the surface having a rake face on a main face thereof and a flank on a side face thereof, wherein, when a value calculated by the following equation (I) is a texture coefficient TC of the (HKL) plane of the aluminium oxide layer, a ratio of a texture coefficient TCR on the rake face to a texture coefficient TCF on the flank, TCF/TCR, is in a range of 0.3 to 0.95. TC = I ? ( HKL ) / I O ? ( HKL ) 1 / 6 ? ? ? [ I ? ( hkl ) / I 0 ? ( hkl ) ] ( I ) where I(HKL), I0(HKL) and ?[I(hkl)/I0(hkl)] are as described in the specification.Type: ApplicationFiled: July 20, 2005Publication date: August 27, 2009Applicant: KYOCERA CORPORATIONInventors: Hirotoshi Itoh, Takahito Tanbuchi
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Publication number: 20090214306Abstract: The present invention discloses a coated cutting tool insert particularly useful for dry and wet machining, preferably milling, in low and medium alloyed steels, stainless steels, with or without raw surface zones. The insert is characterized by a WC-TaC-NbC-Co cemented carbide with a W alloyed Co-binder phase and a coating including an innermost layer of TiCxNyOz with columnar grains and a top layer at least on the rake face of a smooth ?-Al2O3.Type: ApplicationFiled: November 23, 2006Publication date: August 27, 2009Applicant: SANDVIK INTELLECTUAL PROPERTY ABInventors: Rickard Sundström, Marie Pettersson, Susanne Norgren, Bernt Larsson