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| Number | Title | Issue Date |
| 8043035 | Coated drill and method of making the same The present invention relates to a drill comprising a cemented carbide or high speed steel substrate and a coating wherein the coating comprises: a first layer system having a multilayered structure covering substantially the whole active part of the drill, a second... | 10/25/2011 |
| 7922428 | Coated bore cutting tools A twist drill partially coated with TiN to increase wear resistance whilst minimising the transfer of coating particles to a work piece. The drill is selectively coated on the rake face (42); the land (46) is not coated. ... | 04/12/2011 |
| 7658575 | Machine reamer A machine reamer has a plurality of slender blades erected on the outer peripheral part of a reamer head body. Each blade of a pair of blades facing each other in a radial direction are different in material kind from each other. One of the blades treated as a pair ... | 02/09/2010 |
| 7393163 | Drill with improved cutting insert formation A drill includes a tip-forming front end having at least two straight cutting edges and at least two chip flutes extending from the tip end towards a rear end. Each cutting edge includes an inner portion disposed near a center line of the drill, and an outer portion... | 07/01/2008 |
| 7371344 | Method and apparatus for manufacturing a blank for a rotary cutting tool A blank for a rotary tool for chip removing machining, such as a helix drill or an end mill is formed by advancing a mixture of hard metal powder and carrier through an extrusion passage. The mixture is fed past a core having pins secured thereto for forming respect... | 05/13/2008 |
| 7368079 | Method for forming ultra hard sintered compacts using metallic peripheral structures in the sintering cell A method for forming an ultra hard material layer is provided. The method includes disposing a metallic liner inside the periphery of a refractory metal enclosure, introducing ultra hard material feed stock into the enclosure, and sintering using HPHT processing and... | 05/06/2008 |
| 7367758 | Ceramic bit for high speed drilling A ceramic drill bit comprising a cylindrical shank and a shaped portion extending axially in line with the shank and having a free end forming the tip of the bit, a relief face extending from each main cutting edge with a relief angle lying in the range 4° to 10° ... | 05/06/2008 |
| RE40297 | Two-piece rotary metal-cutting tool and method for interconnecting the pieces A tool includes a tool body and a cutting portion detachably mounted thereon, the tool being rotatable about a longitudinal center axis. The tool body includes flutes formed in an outer surface thereof, and a pair of forward projections at a front end thereof. The c... | 05/06/2008 |
| 7354548 | Fabrication of hardmetals having binders with rhenium or Ni-based superalloy Hardmetal compositions each including hard particles having a first material and a binder matrix having a second, different material comprising rhenium or a Ni-based superalloy. A two-step sintering process may be used to fabricate such hardmetals at relatively low ... | 04/08/2008 |
| 7347968 | Method to form multi-material components The invention shows how powder injection molding may be used to form a continuous body having multiple parts, each of which has different functional properties such as corrosion resistance or hardness, there being no connective materials such as solder or glue betwe... | 03/25/2008 |
| 7340978 | Method and apparatus for making a rotary tool for chip removing machining 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 ... | 03/11/2008 |
| 7320565 | Edge-carrying drill, method for the manufacture of the drill, and drilling tool comprising such a drill In a first aspect, the invention relates to an edge-carrying drill body (1) of the type that is intended for deep hole drilling, and which is rotatable around a geometric axis (C) as well as comprises a through channel (2) arranged for internal chip ev... | 01/22/2008 |
| 7311480 | Plate-shaped cutter insert for direct clamping attachment in a base body The invention describes a drill plate with a clamping attachment in a rotatably driven base body, which on one of its end faces forms a centering groove that is open towards the top. A clamping slot extending into the material of the base body is arranged at the bot... | 12/25/2007 |
| 7309196 | Modular drill A drill having a replaceable cutting head, modified to eliminate forces which would distort the pocket of the drill shank and otherwise concentrate stresses which would cause failure of the drill. The cutting head has a frustoconical depending connecting member rece... | 12/18/2007 |
| 7306411 | Drill with groove width variation along the drill and double margin with a thinning section at the tip In a drill in which a chip discharge groove twisted in the shape of a spiral relative to an axis is formed in the outer periphery of the tip section of a roughly cylindrical drill body that rotates around the axis, and a cutting edge is formed on the intersecting ri... | 12/11/2007 |
| 7306410 | Twist drill with a replaceable cutting insert and a rotary cutting tool with a replaceable cutting insert A twist drill or rotary cutting device, in particular a drill, comprising a tool head or cutting insert consisting of a hard cutting material and a tool shaft which clamps the tool head between two clamp extensions that project axially from said tool shaft in such a... | 12/11/2007 |
| 7293945 | Non-rotary cutting tool and process of machining scroll member by using the same A non-rotary cutting tool which is to be moved relative to a workpiece in a predetermined direction for cutting the workpiece, with its rake face being held substantially perpendicular to the predetermined direction. The cutting tool includes (a) a generally cylindr... | 11/13/2007 |
| 7278806 | Two edge deburring tool A rotating tool for simultaneously deburring two surfaces of a workpiece is disclosed including a rotatable shaft having a first end and a second end with a first deburr surface on the first end facing towards the second end and having a first angle. A second deburr... | 10/09/2007 |
| 7275898 | Threading tap for cutting threads in blind holes and methods of its manufacture A threading tap for cutting threads in blind holes includes an elongated body with a central axis, the body having at a rear end a connector portion, and having at a front end a threading portion. The threading portion is provided with at least one helical thread-cu... | 10/02/2007 |
| 7270504 | Cutting tool for metal working as well as method in the production of cutting tools 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 ... | 09/18/2007 |
| 7246975 | Hole saw with replaceable cutting tip A device for cutting a hole, such as in sheet metal is provided. The device includes an axially rotatably cylindrical body that is operable with a rotatable drive. A distal end portion of the body includes a replaceable cutting tip and a replaceable pilot. The cutti... | 07/24/2007 |
| 7244081 | Drill adapter for drill having central and lateral cutting inserts A drill adapter has a resilient insert retaining portion at one end, a drive stem at the second end, and an adapter seating portion between the two. The insert retaining portion includes first and second resilient clamping members which are rotationally 180° apart.... | 07/17/2007 |
| 7241088 | Threading tap for cutting threads in blind holes and methods of its manufacture A threading tap for cutting threads in blind holes includes an elongated body with a central axis, the body having at a rear end a connector portion, and having at a front end a threading portion. The threading portion is provided with at least one helical thread-cu... | 07/10/2007 |
| 7241089 | Drill insert having curved cutting edges A spade drill insert and drilling tool assembly is provided wherein the spade drill insert body comprises curved cutting edges and a lip groove having a trough substantially parallel to a plane formed through each adjacent curved cutting edge, which provides a signi... | 07/10/2007 |
| 7241085 | Drilling tool for holemaking in metallic workpieces A drill comprises a shaft with chip conveying flutes and a drill head at its forward end with at least two cutting inserts. Each cutting insert is provided with at least one cutting edge which is delimited between a chipbreaking surface and first relief surface and ... | 07/10/2007 |
| 7237992 | Process of machining scroll member by using non-rotary cutting tool A process of machining a scroll member of a scroll compressor by using a non-rotary cutting tool. The non-rotary cutting tool is moved relative to a workpiece in a predetermined direction for cutting the workpiece, with its rake face being held substantially perpend... | 07/03/2007 |
| 7226670 | Work piece with a hard film of AlCr-containing material, and process for its production A work piece or structural component is coated with a system of film layers at least one of which is composed of (AlyCr1-y) X, where X=N, C, B, CN, BN, CBN, NO, CO, BO, CNO, BNO or CBNO and 0.2≦y | 06/05/2007 |
| 7214009 | Drilling tool A drilling tool consisting of a drill shank having a drill point and of a transition section which adjoins the drill shank in the axial direction and which merges into a clamping shank, the transition section being heat-treated in such a way that it has higher bendi... | 05/08/2007 |
| 7204117 | Method and device for producing a hard metal tool The method has a first material of lesser hardness acting as a rod-shaped carrier for a second material of greater hardness, each materials formed within a respective extrusion press tool and the plastic mass flow of the greater hardness material fed to the extrusio... | 04/17/2007 |
| 7201543 | Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill A twist drill and method for producing is provided. The cutting edge structure has a first portion at the drill tip portion and a second portion disposed away from the drill tip portion. The flute wall extends further into the land structure at the second portion of... | 04/10/2007 |
| 7195428 | Gundrill A method of forming deep holes and a gundrill therefore is disclosed. The gundrill has an elongate tubular shank and a cutting tip, each provided with a tubular central region supplying pressurized drilling fluid and a non-circular fluid cross-section defining a dri... | 03/27/2007 |
| 7189437 | Mobile plating system and method An exemplary method for using a mobile plating system is provided that includes locating the mobile plating system at a desired location for plating, positioning an external vacuum pump from an interior position of a mobile storage volume of the mobile plasma platin... | 03/13/2007 |
| 7186063 | Milling cutter A rotary multi-tooth milling cutter, each tooth having a tooth face is provided. The tooth face has at least two sections, a first section nearest the cutting edge having a convex form as viewed in a cross section perpendicular to the cutter axis and a second sectio... | 03/06/2007 |
| 7168893 | Throw-away tipped drill, throw-away tip, and drill main body In a throw-away tipped drill, a slit is formed at the bottom surface of a tip attachment seat which faces towards the end of its axial line direction, with this slit extending towards the rear of the axial line direction. Furthermore, when seen from the end of the a... | 01/30/2007 |
| 7147413 | Precision cemented carbide threading tap A precision cemented carbide threading tap is designed for use in precision tool holders in synchronous high speed tapping. The precision tap includes a fully cylindrical shank without the aid of squares, flats or other notches. The precision tap further includes a ... | 12/12/2006 |
| 7147939 | Coated carbide tap A coated carbide tap comprises a substrate consisting of tungsten carbide cemented with 12 to 16% by weight cobalt with additions of small amounts of transition metal carbides added to restrain grain growth, and may also contain low levels of impurities that might b... | 12/12/2006 |
| 7143490 | Tap process for hard workpieces A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence t... | 12/05/2006 |
| 7144208 | Low torque tap A low torque tap includes a shank portion with a driving square and a thread cutting portion. The thread cutting portion includes a threaded body with one or more asymmetrical straight flutes that run essentially parallel to a longitudinal axis of the tap. The threa... | 12/05/2006 |
| 7140815 | Drill for making flat bottom hole The present invention is directed to a helical drill configuration that allows substantially flat bottomed holes to be machined. At the cutting end of the body member, there are at least two cutting edges that are symmetrically oriented on apposing sides of the rota... | 11/28/2006 |
| 7140814 | Spade-type drill bit having helical configuration A spade bit including a longitudinally extending shaft having a cutting member located at a distal end thereof. The cutting member comprises a pair of helically shaped, opposed blades joined along the longitudinal axis of the shaft and an axially extending pilot spu... | 11/28/2006 |
