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| Number | Title | Issue Date |
| 7516686 | Two-flute twist drill A twist drill for use, predominantly by non-professional do-it-yourself workers incorporates a flute architecture with an internal ridge for promoting the break up of chips into short length components. The tip of the twist drill includes an axial relief constructio... | 04/14/2009 |
| 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 |
| 7367753 | Milling cutter 12. A rotationally drivable milling cutter has a cylindrical carrier body (10), which is equipped on its circumference with a plurality of cutting bodies (12) comprising a cutting material that is harder than hard metal. The cutting bodies (1... | 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 |
| 7350595 | Drilling device and drilling method A drilling device is composed so as to drill a drilled object composed of a brittle material with the end of a rotating core bit by using a core bit in which a bit, formed by dispersing and arranging a cemented carbide or super abrasive in a binder phase, is provide... | 04/01/2008 |
| 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 |
| 7341409 | Tool for chip removing machining The present invention relates to a tool and a male part for chip removing machining. The tool includes a male part and a holder for the male part. The male part includes a radial and axial supporting and positioning portion and a threaded portion. A largest diameter... | 03/11/2008 |
| 7325471 | Toolholder and cutting insert for a toolholder assembly A toolholder and cutting insert for a toolholder assembly wherein the cutting insert has a tapered shank which provides a resilient interference fit with a tapered section of a bore extending within the toolholder. Additionally, a rearwardly facing face on the cutti... | 02/05/2008 |
| 7322105 | Methods for manufacturing endodontic instruments by milling A method for manufacturing endodontic instruments by milling. A provided metallic (e.g., a nickel-titanium alloy or stainless steel) thread or wire having a longitudinal axis is advanced along its longitudinal axis at a feedrate while contacting at least a portion o... | 01/29/2008 |
| 7296497 | Method and device for manufacturing a drill blank or a mill blank The present invention relates to a method for manufacturing a drill blank or a mill blank by extrusion, said method comprising the forming of a first blank portion (B1) having external, axially extending external flutes and the forming of a further blank port... | 11/20/2007 |
| 7290972 | Screw anchor for friable material A screw anchor includes a roughly cylindrical body (1) with a drilling portion (3) provided, at its free end, with drilling teeth (14-16), at the other end of the body, a bearing flange (5) and an external screw thread (7). ... | 11/06/2007 |
| 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 |
| 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 |
| 7201544 | Deep hole boring drill A drill for producing a deep hole that does not produce a bend of the hole during cutting. A drill body is spirally provided with a pair of cutting edges. The cutting edges are spaced at about 180 degrees apart around a core of the drill and the edge line of a tip s... | 04/10/2007 |
| 7192226 | Shrink fit holder and methods of drilling and reaming A drill has a unitary drill bit and chuck structure that includes a drill bit and a chuck. The chuck encloses a portion of the drill bit and has a thread. A rotatable drive element having a thread engages the thread of the chuck. The chuck is heat shrunk onto the dr... | 03/20/2007 |
| 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 |
| 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 |
| 7140811 | Metal-cutting head A method for producing a powdered metal compact for a cutting head to be used in a metal cutting tool uses a punch and die assembly. The resulting cutting head has apertures communicating between a coolant channel and recesses. ... | 11/28/2006 |
| 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 |
| 7134813 | Cooling channel geometry A drilling tool comprising at least one machined groove and at least one web which extend from a tip of the tool to the shank of the tool. A main cutting edge and an inner cooling channel are formed on each web. Said cooling channel extends from the tip to an opposi... | 11/14/2006 |
| 7104160 | Method of making a cutting tool A method for producing a cutting tool such a twist grill, end mill, or the like. The method provides an unbonded assembly including a cylindrical core having ends and an elongate side surface covered partially or completely by a coherent, unsintered layer including ... | 09/12/2006 |
| 7028790 | Rotary drill bit A drill bit includes a body defining an axis and first and second cylindrical portions, a coupling adapted for connection with a rotary driver, and a depth stop adjustably secured to a first portion by a plurality of adjusting fasteners in a manner to limit penetrat... | 04/18/2006 |
| 7014394 | Cutting tool Rotary cutting tools for cutting various types of sheet material are known. However, when cutting non-ferrous materials, damage known as fluttering is caused to both surfaces of the sheet material being cut. The requirement for the cutting of larger and larger sheet... | 03/21/2006 |
| 7008149 | Tool kit and method of using A new and improved tool kit and method of using the tool kit for use in making a substantially perpendicular indented surface around an existing threaded bolt hole in a workpiece is disclosed. The kit comprises a guide rod and a grinder drill bit. The guide rod has ... | 03/07/2006 |
| 6980222 | Method and apparatus for implementing dynamically sizable color tables A method, apparatus, and computer instructions for managing colors in a color table used in displaying graphics. A request is received for a color map. A color map location is set in the color table, wherein the color map location has a starting point. An identifica... | 12/27/2005 |
| 6935636 | Arrangement for the detachable mounting of a rotatable tool on a drive shaft Rotatable tool coupled to support body, and drive shaft detachably mounted to rotatable tool, such that rotatable tool is drivable in a working direction, in which support body includes an inlet opening defined by at least three eccentric segments and drive shaft in... | 08/30/2005 |
| 6923602 | Drill having construction for reducing thrust load in drilling operation, and method of manufacturing the drill A drill including a shank portion and a cylindrical body portion contiguous to each other. The cylindrical body portion includes (a) primary cutting edges and secondary cutting edges formed in its axially distal end portion such that each of the secondary cutting ed... | 08/02/2005 |
| 6887125 | Polishing apparatus, polishing method, control program for causing computer to execute polishing, and recording medium A polishing apparatus includes a table on which a polishing target member is placed, and at least one nozzle which sprays a polishing solution to a surface of the polishing target member so as to form, by polishing, the surface of the polishing target member. The no... | 05/03/2005 |
| 6874978 | Boring bit and methods for manufacturing boring bits Boring bits and methods for manufacturing boring bits. The method includes the acts of forming a shank including one end connectable to a power tool and an opposite end, molding a cutting head separate from the shank, the cutting head including a base wall and a sid... | 04/05/2005 |
| 6860172 | Method for making a powdered metal compact A method for producing a powdered metal compact for a cutting head to be used in a metal cutting tool uses a punch and die assembly. The resulting cutting head has apertures communicating between a coolant channel and recesses. ... | 03/01/2005 |
| 6694847 | Cutting tip and method thereof A cutting tip having a three-layer laminated structure is provided. The tip is made from a disc-shaped three-layer laminate wherein a second layer consisting of a hard sintered compact of CBN or diamond is sandwiched by a first layer and a third layer con... | 02/24/2004 |
| 6688817 | Drill for drilling, a method for making a drill for drilling, and a cutting tool A method of making a drill comprising a tip (16), a shank (10) and a flute area having chip spaces (12, 14) formed therein, the drill being substantially completely coated with a hard material, and is characterized by applying an abrasive material to mere... | 02/10/2004 |
| 6676500 | Drill bit sharpener A drill bit sharpener includes a motor assembly and a drill bit grinding assembly. The motor assembly has a motor with a drive shaft to drive the drill bit grinding assembly, which includes a driven assembly, a sharpener housing, a grinding wheel assembly... | 01/13/2004 |
| 6669414 | Method and a device for manufacturing a tool and a tool made by the method A rotary tool such as a helix drill and an end mill for example, is manufactured by forming a blank by an extrusion process, and then sintering the blank. During the extrusion, a mixture is passed through a die which provides a cylindrical shape to the ou... | 12/30/2003 |
| 6588994 | Drill bit tail The invention is a tool bit for use in a socket or chuck mechanism. The tool bit includes an elongated shank having an operative tip end and an opposite tail end. A polymer jacket is molded about the tail end of the shank, and the jacket in the lateral cr... | 07/08/2003 |
| 6585460 | Drill having machine grindable cutting edge A drill having a cutting edge that is less prone to chipping or fracturing when used in drilling operations, and that can be sharpened or resharpened uniformly and consistently from drill to drill by machine grinding. The drill comprises a body and at lea... | 07/01/2003 |
| 6575674 | Reaming tool and process for its production A multi or single cutter reaming tool has a shaft and a shaped head with at least one cutter. The shaped head is produced from a blank having a base body of a base material on its envelope surface with at least one rectilinear or helical groove-shaped rec... | 06/10/2003 |
| 6572311 | Two-piece drill bits Two-piece drill bits and methods of manufacturing same provide a preferably hexagonal shank, and a drill portion having a proximal end inserted into an axial hole in a distal end of the shank. In a preferred embodiment, at least part of the area adjacent ... | 06/03/2003 |
| 6540452 | Drilling tool for machine tools and method for the production thereof The invention relates to a drilling tool for machine tools and to a method for the production thereof. The drilling tool has at least one chip conveyor groove (16) and at least one functional channel (20). In order to produce the body of the drill (10), t... | 04/01/2003 |
| 6450739 | Tool for chip removing machining and methods and apparatus for making the tool A tool for chip-forming machining is made by passing first and second compounds through first and second coaxial dies, respectively, whereby the first material forms a center core of the tool, and the second material forms an outer rod of the material. Th... | 09/17/2002 |
