Patents Assigned to Sandvik
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Patent number: 6854398Abstract: A mechanism for transferring mechanical energy onboard of a train of carriages of a sorting machine includes a friction wheel fitted onto a carriage. The wheel is rotated by friction caused by the engagement of the wheel against a track on which the carriage travels, and is connected to an electric generator disposed on the carriage. Rotation of the wheel is transmitted to the generator to rotate the generator and produce electricity for operating a belt(s) disposed on the carriage. The force with which the wheel is pressed against the track is automatically changed in response to changes in power requirements of the generator.Type: GrantFiled: April 10, 2003Date of Patent: February 15, 2005Assignee: Sandvik ABInventors: Attilio Soldavini, Renato Tacchi, Luciano Longhi
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Patent number: 6854367Abstract: A cutting tool system includes a clamping device and a cutting tool mounted therein. The cutting tool carries a cutting edge and includes a shaft clamped within an aperture of the clamping device. Prior to being clamped, the shaft is movable relative to the clamping device in either a longitudinal or rotational direction, in order to locate the cutting edge in a desired position. Either the clamping device or the cutting tool carries a spring-loaded device which engages a recess formed in the other of the cutting tool and clamping device when the cutting tool and its cutting edge are in a desired position, to provide an indication that the cutting tool is in such desired position by providing a sudden increase in a force necessary to displace the cutting tool out of such desired position.Type: GrantFiled: April 20, 2001Date of Patent: February 15, 2005Assignee: Sandvik AktiebolagInventors: Håkan Ericksson, Tryggve Sörlund
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Patent number: 6854538Abstract: A rock drill includes a shank. A percussion piston is arranged to hit the back end of the shank. Further, a pulling element is arranged around the shank, to which a pulling force can be directed in such a manner that the shank can, by the pulling force, be moved toward the percussion piston, when stuck drilling equipment is freed. During rock drilling, a push force is arranged to act on the pulling element, the push force being opposite with respect to the pulling force. The push force is designed in such a manner that during drilling the pulling element moves due to the push force toward the front section of the drill to be at a predefined distance from the position corresponding to the impact point of the shank.Type: GrantFiled: December 10, 2003Date of Patent: February 15, 2005Assignee: Sandvik Tamrock OyInventor: Timo Muuttonen
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Patent number: 6855413Abstract: A body is at least partially coated with one or more refractory layers of which at least one layer is of a fine grained ?-Al2O3. Said ?-Al2O3 layer has equiaxed grains with an average grain size of <0.5 ?m. The Al2O3 layer also has at least one sublayer containing Al, Si and O. The fine grained ?-Al2O3 microstructure is obtained by periodically introducing a silicon halide, preferably SiCl4, during the Al2O3-process.Type: GrantFiled: October 21, 2003Date of Patent: February 15, 2005Assignee: Sandvik ABInventor: Björn Ljungberg
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Publication number: 20050029796Abstract: The invention relates to drilling or rockbolting machines, for the execution of underground works, in particular in mining operations. The carrier vehicle comprises a chassis (2) and four wheels, all driving wheels, with two wheels (4) situated on the right-hand side of the chassis (2) of the vehicle and two other wheels (5, 6) situated on the left-hand side of the chassis. The four wheels are of the independent suspension type, having a jack-controlled height, and each comprise rotation-drive means, especially hydraulic motors. The chassis (2) receives, at the front and at the rear, working equipment, such as drilling arms (25, 26) with respective guides (27, 29), the basic position of which is horizontal and transverse to the direction of displacement (F) of the vehicle. This carrier vehicle is applicable to the realization of a machine which can be used in mine galleries of low height.Type: ApplicationFiled: June 28, 2004Publication date: February 10, 2005Applicant: SANDVIK TAMROCK SECOMA SAInventors: Jean-Claude Barthomeuf, Franck Leon, Alain Comorge, Alexandre Miralles
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Publication number: 20050031423Abstract: 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: ApplicationFiled: July 2, 2004Publication date: February 10, 2005Applicant: SANDVIK ABInventors: Joren Kugelberg, Roine Ericsson, Jonathan Fair, Anders Micski
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Publication number: 20050025657Abstract: According to the present invention there is provided a method of making a finegrained tungsten carbide—cobalt cemented carbide comprising mixing, milling according to standard practice followed by sintering. By introducing nitrogen at a pressure of more than 0.5 atm into the sintering atmosphere after dewaxing but before pore closure a grain refinement including reduced grain size and less abnormal grains can be obtained.Type: ApplicationFiled: June 23, 2004Publication date: February 3, 2005Applicant: Sandvik ABInventors: Per Gustafson, Susanne Norgren, Mats Waldenstrom
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Publication number: 20050025594Abstract: An edge-carrying drill body intended for deep hole drilling, is rotatable around a central geometric axis and comprises a through-channel arranged for internal chip evacuation. The channel mouths in front and rear ends of the drill body. A front channel mouth is bridged-over by a bridge on which a plurality of cutting edges are formed, which edges are made integrally with the rest of the bridge. The front mouth includes inlets disposed in front of respective cutting edges with reference to the direction of rotation of the body.Type: ApplicationFiled: May 20, 2004Publication date: February 3, 2005Applicant: SANDVIK ABInventor: Stefan Lindblom
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Publication number: 20050025928Abstract: Support pad for a long hole drill head wherein the support pad includes a base body with a bottom surface, at least one side surface and a top surface. The top surface is arranged to function as a wear surface and is defined by a titanium-free wear-resistant coating, whereas the remaining surfaces of the support pad are defined by a titanium-containing wear-resisting coating.Type: ApplicationFiled: July 8, 2004Publication date: February 3, 2005Applicant: SANDVIK ABInventors: Raimo Annanolli, Veronica Bostrom
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Patent number: 6848485Abstract: A stump grinding mechanism includes a disc having recesses formed in an outer peripheral surface thereof. Peripheral cutting assemblies are mounted in respective recesses. Each cutting assembly includes a holder fixed in the recess, and a cutter tooth mounted in the holder. The cutter tooth includes a shank extending through the holder and secured thereto by a nut. The nut is disposed within a pocket of the holder to be shielded during a cutting operation. The holder includes gauge marks to facilitate a proper angular orienting of the cutting assembly within the recess. Some of the cutter teeth have flat cutter faces optimized for cutting wood fiber, whereas others of the cutter teeth have cutter faces defined by converging surface portions to be optimized for cutting/displacing rocks.Type: GrantFiled: January 21, 2004Date of Patent: February 1, 2005Assignee: Sandvik Mgt LLCInventors: James Paumier, Kenneth Monyak
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Publication number: 20050019202Abstract: Radiant tube in a cracking furnace is disclosed. Hydrocarbons are cracked into ethylene in the tube through which hydrocarbons flow, which tube is heated from the outside to a temperature where cracking occurs. The tube is made from a FeCrAl material containing, in addition to Fe, 10 to 25% by weight of Cr, 1 to 10% by weight of Al and 1.5 to 5% by weight of Mo. Optionally, the material comprises up to a total of 2.2 wt. %, preferably up to 2.0 wt. % and more preferably up to 1.0 wt. %, of one or more alloying materials selected from the group consisting of tantalum, hafnium, zirconium, yttrium, nitrogen, carbon and oxygen.Type: ApplicationFiled: May 17, 2004Publication date: January 27, 2005Applicant: SANDVIK ABInventors: Mats Lundberg, Claes Ohngren, Roger Berglund
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Publication number: 20050019116Abstract: A cutting insert, intended for drills, in particular long hole drills, includes a cutting edge from which a concavely curved, chip removing surface extends up to a ridge where the curved surface transforms into a top side of the cutting insert. A number of long narrow chip-embossing formations (e.g., grooves or beads) extend from the chip removing surface to the top side with the purpose of producing, in the underside of the chip, long narrow embossments in the form of either ridges or flutes in order to stiffen the chip and make it more prone to breakage.Type: ApplicationFiled: June 26, 2003Publication date: January 27, 2005Applicant: SANDVIK ABInventor: Mattias Vanberg
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Publication number: 20050019113Abstract: A cutting insert comprises first and second polygonally-shaped main faces arranged substantially parallel to one another, and a side face structure interconnecting the first and second main faces to define a peripheral edge. At least the first main face includes at least one projection extending to the peripheral edge, the projection formed by: a portion of the first main surface (defining a relief surface), a portion of the side face structure (defining a rake surface), and a portion of the peripheral edge (defining a cutting edge). The insert includes support surfaces defined by a portion of the second main face, and by portions of the side surface structure other than the rake surface.Type: ApplicationFiled: June 9, 2004Publication date: January 27, 2005Applicant: SANDVIK ABInventor: Gunter Wermeister
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Publication number: 20050006143Abstract: The invention relates to a rock drilling arrangement and a method and program for controlling rock drilling on the basis of specific energy consumption. The specific energy of drilling is the quantity of energy used per a unit of length of the drilled hole. Not only the used impact energy, but also the energy used by at least one other sub-process is taken into account when determining the specific energy. Rotation energy is typically included, but feeding energy and flushing energy can also be considered. Drilling variables are adjusted so that the specific energy is of a predetermined size.Type: ApplicationFiled: August 9, 2004Publication date: January 13, 2005Applicant: Sandvik Tamrock OyInventor: Vesa Uitto
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Patent number: 6840717Abstract: A rotatable tool includes a shaft and a cutting head mounted thereto. The shaft defines a longitudinal axis of rotation and has a seat formed at a front end thereof which includes a first engagement surface. The cutting head is attached on the seat and includes a second engagement surface engaging the first engagement surface for longitudinally locking the cutting head to the shaft. The first and second engagement surfaces include respective first and second support surfaces which together form a planar interface, the interface defining a contact line when viewed longitudinally toward a front end of the tool. The contact line intersects an outer periphery of the cutting head at a point. The contact line extends from the point in a direction forming an acute angle with a radius that intersects the point. The contact line is disposed rotationally ahead of the radius with reference to rotation of the tool.Type: GrantFiled: June 5, 2002Date of Patent: January 11, 2005Assignee: Sandvik ABInventor: Henrik Eriksson
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Publication number: 20050002744Abstract: A cutting tool and a method for the production of cutting tools for metalworking characterized in that the holder body of the tool first is submitted to a surface hardening that results in the formation of compressive stresses in the surface and then submitted to a surface treatment that gives additional contribution of compressive stresses in the surface. In this way, it is allowed to, on one hand, be able to modify/machine or remove parts of or the entire phase-transition layer obtained in the surface hardening at the same time as additional compressive stresses are built up in the surface of a hardened steel material in the tool body.Type: ApplicationFiled: May 17, 2004Publication date: January 6, 2005Applicant: SANDVIK ABInventors: Klas Tubinger, Mikael Herdin, Dan Hoglund
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Publication number: 20050002745Abstract: A machine spindle includes a casing and a drawbar assembly disposed in the casing for clamping a tool in place. The drawbar assembly includes a front drawbar having a tool clamp, and a rear drawbar movable rearwardly under a spring force for pulling the front drawbar rearwardly to activate the clamp. A rearward force from the rear drawbar is transmitted to the front drawbar by a wedge arrangement that includes multiple pairs of wedges that have cooperative sliding surfaces that make surface contact (as opposed to line contact) with one another. The cooperative sliding surfaces are configured to provide an amplified rearward force against the front drawbar during a final stage of clamping.Type: ApplicationFiled: April 14, 2004Publication date: January 6, 2005Applicant: SANDVIK ABInventors: Soren Olsson, Kjell Englund
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Publication number: 20050002748Abstract: A machine spindle includes a casing and a clamping mechanism disposed in the casing. The clamping mechanism includes front and rear drawbars which are relatively movable axially within the casing. A gas spring biases the rear drawbar rearwardly, and a force transmitting mechanism transmits such rearward motion to the front drawbar for moving the front drawbar rearwardly. In response to its rearward movement, the front drawbar actuates a clamp for clamping a tool. The gas spring includes a housing disposed in the casing and defining a gas chamber having a front wall through which the rear drawbar extends. The gas spring also includes a piston disposed in the gas chamber for axial movement therein. The piston is releasably connected to a rear end of the rear drawbar by a releasable coupling disposed in the chamber.Type: ApplicationFiled: April 14, 2004Publication date: January 6, 2005Applicant: SANDVIK ABInventors: Kjell Rehn, Soren Olsson
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Publication number: 20040265074Abstract: A tool for the fine-turning of grooves in workpieces including a basic body having a rearwardly extending mounting part, and a forwardly projecting bracket. The bracket includes a narrow neck part and an enlarged support part disposed at an end of the neck part. The support part, which forms an insert seat, extends laterally from the neck part wherein the seat is arranged asymmetrically with respect to an imaginary center line of the basic body. A cutting insert includes a bottom side supported on the insert seat. The insert includes two spaced apart convexly arched side cutting edges arranged so that the imaginary center line passes therebetween. A hole is provided through the insert for receiving a fastening screw. The bottom side and the insert seat include mutually engaging stabilizing structures preventing angular displacement of the insert about an axis of the hole.Type: ApplicationFiled: March 15, 2004Publication date: December 30, 2004Applicants: SANDVIK AB, VOLVO AERO CORPORATIONInventors: Ingemar Hessman, Kenneth Lundberg, Ove Lund, Carl-Goran Petersson, Anders Wretland
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Publication number: 20040265080Abstract: A deep hole drill is rotatable around a geometric axis and includes a body defining a through-channel arranged for internal chip evacuation. The channel opens in front and rear ends of the body. One or more cutting edges are made integrally with the rest of the body, more precisely from a hard material, such as cemented carbide or CERMET. A front bridge of the body extends across the front channel and possesses the integral cutting edge(s).Type: ApplicationFiled: May 20, 2004Publication date: December 30, 2004Applicant: SANDVIK ABInventors: Ake Danielsson, Bengt Silver
