Patents Assigned to Sandvik Intellectual Property
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Publication number: 20120028772Abstract: The invention relates to a roller of the type that comprises, on one hand, a drive shaft, which has a cylindrical envelope surface having a certain outer diameter and a certain length, and, on the other hand, a shorter roller ring, which includes an outer ring of a hard material and an inner ring concentric with the same and of a more ductile material, which includes a cylindrical inside having a certain inner diameter and is, on one hand, permanently united to the outer ring in a metallurgical way, and, on the other hand, rotationally rigidly connected with the drive shaft in order to, from the same, transfer torque to the outer ring. According to the invention, the rotationally rigid joint between the drive shaft and the roller ring solely consists of a shrink-fit joint that is established between the envelope surface of the drive shaft and the inside of the inner ring and has an interference of at least 0.01% of the outer diameter of the drive shaft.Type: ApplicationFiled: February 19, 2010Publication date: February 2, 2012Applicant: Sandvik Intellectual Property ABInventor: Milinko Prusic
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Patent number: 8105966Abstract: The present invention relates to a cutting tool insert preferably for machining of hardened steel, hot and cold working tool steel, die steel, case hardened steel, high speed steel and ductile grey cast iron and composed of a composite comprising from about 30 to less than about 60 vol-% of a cBN-phase and a binder phase comprising a titaniumcarbonitride phase and a TiB2 phase. According to the invention, in the XRD pattern from the composite using CuK?-radiation the peak height ratio of the strongest TiB2 peak and the strongest cBN peak is less than about 0.02.Type: GrantFiled: April 18, 2008Date of Patent: January 31, 2012Assignee: Sandvik Intellectual Property ABInventors: Leif Dahl, Mikael Lindholm
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Patent number: 8104844Abstract: A cutting tool has a first cutting end, a second cutting end, a shoulder at an interface between the first cutting end and the second cutting end, and a shield removably mounted on one of the first cutting end and second cutting end. The cutting ends each have a cutting tip at a distal end, a body portion, a recess in the body portion and a retainer positioned in the recess. Cutting ends can be mirror images of each other, or may be non-mirror imaged, for example with different gage lengths, to accommodate different operating conditions. One of the cutting ends is mounted in a holder and the shield protects the retainer and recess features on the operating cutting end. A combination of a reversible cutting tool and a sleeve and/or block holder system, an apparatus for cutting, a sleeve per se and a shield per se are also disclosed.Type: GrantFiled: February 27, 2007Date of Patent: January 31, 2012Assignee: Sandvik Intellectual Property ABInventor: Joseph Conwell Fader
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Publication number: 20120019044Abstract: A holder block and pick assembly including a pick, a washer, and a block body. The pick includes a shoulder and a shank extending rearwardly from the shoulder and having a diameter smaller than the diameter of the shoulder. The washer has a central opening adapted to fit about the shank adjacent to the shoulder and a substantially flat edge disposed substantially perpendicular to a radius of the central opening. The block body includes a bore for receiving the shank, a base surface at a lower end of the body for mounting the body to a rotatable element of a rotary cutting machine, and a stop extending frontwardly from the front face of the body and having a surface located substantially perpendicularly to a radius of the bore such that when the pick shank is inserted into the bore with the washer disposed about the shank adjacent to the shoulder, the flat edge of the washer engages the surface of the stop to substantially prevent the washer from rotating with respect to the block.Type: ApplicationFiled: July 26, 2010Publication date: January 26, 2012Applicant: Sandvik Intellectual Property ABInventors: Kenneth MONYAK, Joseph Fader
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Patent number: 8101291Abstract: The present invention relates to coated cutting tool inserts particularly useful for heavy roughing turning operations of very large steel components, such as drive shafts for ships and shafts for wind power plants. The inserts are large with an iC, inscribed circle diameter, of greater than or equal to about 19 mm and a thickness of greater than or equal to about 6 mm with a composition of from about 5 to about 10 wt-% Co, from about 5 to about 12 wt-% cubic carbides or carbonitrides of the metals Ti, Ta and/or Nb, and balance WC with a stratified binder phase enriched surface zone from about 15 to about 40 ?m thick. The inserts have an edge rounding before coating of 35-95 ?m. The coating comprises a first, innermost layer of TiCxNyOz and a total thickness from about 0.1 to about 1.5 ?m, a second layer of TiCxNy with a thickness of from about 4.5 to about 9.5 ?m with columnar grains, a third layer of TiCxNyOz with a thickness of from about 0.3 to about 1.Type: GrantFiled: December 21, 2007Date of Patent: January 24, 2012Assignee: Sandvik Intellectual Property ABInventors: Leif Åkesson, Kenneth Westergren
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Publication number: 20120013123Abstract: A member of a joint for a thin-walled drill tube presents a central axis and comprises a thread for forming a screw joint. The thread presents a thread bottom, a thread top, a pressure flank and a clearance flank. The pressure flank presents a portion having a negative angle less than 7.5°, but at least 0°, relative to a direction perpendicular to the central axis.Type: ApplicationFiled: February 16, 2010Publication date: January 19, 2012Applicant: Sandvik Intellectual Property ABInventor: Göran Bäck
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Milling cutter tool for chip removing machining, as well as a cutting body and a basic body therefor
Patent number: 8096734Abstract: A milling cutter tool including a basic body and a replaceable cutting body. The cutting body includes a set of teeth which are situated with a uniform partition along one of a pair of opposite sides of the cutting body. The cutting body is fixed in a pocket having a support surface against which the underside of the cutting body is mounted. The support surface of the pocket, and the underside of the cutting body, are tipped at a negative axial angle ? of at least 0.5° in relation to a center axis (C1) of the basic body such that the teeth of the cutting body are located along a common, phantom helical line (X), which is concentric with the center axis (C1) of the basic body and has an even pitch which corresponds to the partition between the teeth.Type: GrantFiled: December 9, 2008Date of Patent: January 17, 2012Assignee: Sandvik Intellectual Property ABInventor: Sture Sjöö -
Publication number: 20120006918Abstract: A gyratory crusher, including an outer crushing shell and an inner crushing shell forming between them a crushing chamber, the crushing chamber communicating with a discharge zone that forwards crushed material from the crushing chamber and out of the crusher. The inner crushing shell is supported on a crushing head. The outer crushing shell is supported on a crusher frame. At least one sealing arrangement is between the discharge zone and a working part zone in which at least one bearing for the crushing head to perform a gyratory movement relative to the crusher frame is arranged. The sealing arrangement includes a sealing surface, and a sealing member arranged to seal against the sealing surface and including an inner circumferential flexible sealing lip, an outer circumferential flexible sealing lip and at least one inlet for pressurized fluid to be supplied to an overpressure zone arranged between the inner and outer sealing lips and the sealing surface.Type: ApplicationFiled: June 24, 2011Publication date: January 12, 2012Applicant: Sandvik Intellectual Property ABInventor: Konstantin BELOTSERKOVSKIY
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Publication number: 20120006923Abstract: An inertia cone crusher, including an outer crushing shell and an inner crushing shell forming between them a crushing chamber, the inner crushing shell being supported on a crushing head which is attached on a crushing shaft which is rotatable in a sleeve, an unbalance weight being attached to the sleeve, a vertical drive shaft being connected to the sleeve for rotating the sleeve, the drive shaft being supported by a drive shaft bearing, and a first counterbalance weight and a second counterbalance weight, the first counterbalance weight being attached to the drive shaft in a position located below the drive shaft bearing, the second counterbalance weight being attached to the drive shaft in a position located above the drive shaft bearing.Type: ApplicationFiled: June 22, 2011Publication date: January 12, 2012Applicant: Sandvik Intellectual Property ABInventor: Konstantin BELOTSERKOVSKIY
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Patent number: 8091459Abstract: A method for manufacturing a rotary tool for chip removing machining with at least one chip flute that extends in the longitudinal direction of the tool. The method involves preparing a mixture of a cemented carbide, cermet or ceramics powder and a carrier, such as a polymer, and placing the mixture in an extruding machine. The mixture is extruded in a feed direction by means of a die to form the diameter of the mixture body. The mixture body passes against a chisel which forms a chip flute in the outer periphery of the mixture body by chip-removing machining. When the chisel is displaced away from the mixture body, a non-fluted shaft portion is formed. By rotating the mixture body while contacted by the chisel, a helical chip flute can be formed. Alternatively, the body could be twisted after a straight flute has been formed, whereupon the flute becomes helical.Type: GrantFiled: December 28, 2007Date of Patent: January 10, 2012Assignee: Sandvik Intellectual Property AktiebolagInventors: Jören Kugelberg, Roine Ericsson, Jonathan Fair, Anders Micski
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Patent number: 8085829Abstract: A furnace insulation including fiber modules in the form of at least two cylinder segments (2, 3; 7, 8) that are placed against one another so as to form a cylinder whose internal volume constitutes the furnace space and that are adapted to allow an electrical resistance element (5) to lie against and be fastened in the inner surface (4) of the cylinder. The furnace insulation is characterized in that the inner part of the cylinder includes one or more radially extending or generally radially extending openings (12; 14).Type: GrantFiled: August 31, 2005Date of Patent: December 27, 2011Assignee: Sandvik Intellectual Property ABInventors: Lars Goran Johansson, Lars-Henrik Eklund
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Publication number: 20110311326Abstract: A shim plate for mounting in a cutting tool for rotary chip removing machining, the cutting tool including a basic body having a rotational axis, a peripheral envelope surface concentric with the rotational axis, a front end surface, and at least one insert seat including a seat surface, the basic body being rotatable in a direction of rotation and arranged to, in each insert seat against the seat surface, receive the shim plate and a mountable cutting insert adjacent to the shim plate. The shim plate includes a bottom surface adapted to adjoin to the seat surface of the basic body, a contact surface opposite to the bottom surface and adapted to adjoin to the cutting insert, and at least one side surface that extends between the bottom surface and the contact surface.Type: ApplicationFiled: June 20, 2011Publication date: December 22, 2011Applicant: Sandvik Intellectual Property ABInventor: Göran PANTZAR
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Publication number: 20110299948Abstract: A cemented carbide insert, including an upper side, an under side, a plurality of side surfaces extending between the upper side and the underside, and an inset including a cutting edge. The cutting edge includes a nose edge and two main edges converging toward the nose edge. The inset is formed of a material that is harder than the cemented carbide, and is countersunk in the surrounding cemented carbide and co-ground with the surrounding cemented carbide. The inset is arranged in a front, wedge-shaped head delimited by one chip surface and two clearance surfaces running along the main edges. The inset transforms into an adjacent body part via limiting surfaces situated inside imaginary planes in the extension of the chip surface and the clearance surfaces.Type: ApplicationFiled: May 26, 2011Publication date: December 8, 2011Applicant: Sandvik Intellectual Property ABInventors: Daniel Edler, Elisabeth Nordin
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Patent number: 8071921Abstract: A method of and an arrangement for transmitting electric current to a furnace that is heated, either completely or partially, by electric current conducted in the furnace wall. The current is conducted through electrically conductive devices connected to the furnace wall. At least one of the devices in proximity to the furnace wall includes a section that has a smaller cross-sectional area than the remainder of the device. The current flow through the smaller cross-section develops heat in the region of the smaller section of a magnitude that corresponds substantially to the heat magnitude that would have been conducted from the furnace wall to the electrically conductive device in the absence of the smaller cross-sectional area.Type: GrantFiled: December 4, 2003Date of Patent: December 6, 2011Assignee: Sandvik Intellectual Property ABInventor: Thomas Lewin
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Publication number: 20110290925Abstract: A gyratory crusher including a crusher head on which a first crushing shell is mounted, a frame on which a second crushing shell is mounted, the first and second crushing shells forming a crushing aperture. A drive device is adapted to rotate an eccentric to which the crusher head is so connected as to be caused, during rotation of the eccentric, to perform a gyratory movement for crushing of material which is introduced into the crushing aperture. A dust seal is adapted to seal a gap between the frame and a fastening portion situated close to the crusher head. The dust seal includes a seal bellows and a seal slide ring. The seal slide ring is connected sealingly to a lower portion of the seal bellows and has a lower slide surface adapted to slide along, and to sealingly abut, with a substantially vertical abutment pressure determined by the inherent weight of the seal slide ring and by the influence of the seal bellows, against an upper slide surface provided on the frame.Type: ApplicationFiled: May 2, 2011Publication date: December 1, 2011Applicant: Sandvik Intellectual Property ABInventor: Henrik JOHANSSON
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Patent number: 8066455Abstract: A connection system which produces an aligned connection between first and second tool parts includes a spigot projecting from the first tool part, and a spigot-receiving recess formed in the second tool part. The spigot and the recess have correspondingly shaped, non-circular cross-sections. The spigot is not oversized relative to the recess, and may be smaller than the recess, so that the spigot can be inserted into the recess without the recess being expanded or the recess being compressed.Type: GrantFiled: June 15, 2005Date of Patent: November 29, 2011Assignee: Sandvik Intellectual Property ABInventors: Jens Neumann, Peter Frank
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Patent number: 8066126Abstract: A screening arrangement in a vibrating screen for screening of material, such as crushed stone, gravel or the like. The screening arrangement is a cross-tensioned or longitudinally tensioned screening media including elements arranged on top of the screening media for stirring or mixing the screened material, the stirring elements being raised portions, which are arranged transversely to the travel direction of the screened material.Type: GrantFiled: May 31, 2006Date of Patent: November 29, 2011Assignee: Sandvik Intellectual Property ABInventor: Mats Malmberg
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Patent number: 8066210Abstract: A central shaft for a gyratory crusher, which includes a crushing head on which a first crushing shell is mounted; a frame on which a second crushing shell is mounted, which second crushing shell defines, together with the first crushing shell, a crushing gap; and a driving device, which is arranged to rotate an eccentric about said central shaft and thereby to cause the crushing head to execute a gyratory movement for crushing of material that is introduced in the crushing gap. The central shaft has a cavity in which are accommodated an anti-reverse and a torque limiter, the anti-reverse and the torque limiter being adapted for connection to said crushing head for restricting spinning.Type: GrantFiled: December 14, 2009Date of Patent: November 29, 2011Assignee: Sandvik Intellectual Property ABInventors: Bengt-Arne Eriksson, Michael Saarnack
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Patent number: 8061935Abstract: The present invention relates to a rock bolt comprising first and second ends, a shaft extending between the ends, and an anchoring device extending along a first part of the shaft adjacent the first end. The anchoring device comprises a mandrel, and at least one expansion element overlaying the mandrel. The expansion element is displaced radially outwardly on a predetermined relative movement between the mandrel and the expansion element. The expansion element is joined to a connector to form an anchor assembly. The anchor assembly is keyed to the mandrel. The anchor assembly comprises relative rotation actuator means active during rotation of the anchoring device. The invention further relates to an anchoring device per se.Type: GrantFiled: October 23, 2007Date of Patent: November 22, 2011Assignee: Sandvik Intellectual Property ABInventors: Steven Weaver, Darren Webb, John Horsch, Matthew Kenny
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Patent number: 8057571Abstract: There is disclosed a cemented carbide tool containing tungsten carbide, titanium carbide, nickel and cobalt, molybdenum and chromium. The composition of the materials provides a good resistance to corrosion as well as high hardness and wear resistance. These properties are particularly interesting for the manufacture of tools for coldforming operations. Cold forming tools made with these materials have steady performance over a long period of time.Type: GrantFiled: December 20, 2007Date of Patent: November 15, 2011Assignee: Sandvik Intellectual Property ABInventors: Emmanuel Pauty, Håkan Engström, Victor Rimbau, Gerard Vasco i Salas