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Document Title |
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7594784 |
Cutting tool
Disclosed is a drilling tool comprising a first drill bit ( 2 ) that is provided with at least two forward cutting edges ( 4, 5 ) and a second drill bit ( 3 ) which encompasses at least two rear...
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7575401 |
PCD drill for composite materials
A PCD drill for producing close tolerance holes in multi layer laminates, such as carbon fiber reinforced composites, with minimum fraying of the fibers on both entrance and exit from the hole is...
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7575400 |
Drilling tool with alternating cutting plates and alternating cutting plates for said drilling tool
The invention relates to a dual-cutting drilling tool. The drilling tool comprises a base body ( 14 ) which is rotatable about a drill axis ( 36 ) and in which two plate seats ( 16 ) are arranged...
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7556458 |
Tool for machine tools
A tool includes a shaft and a blade support which is disposed in a removable manner on the face of the shaft, preferably embodied as a drill bit. One end of the blade support is provided with a...
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7553114 |
Thread cutting tap and a method of its manufacture
A thread cutting tap having a threaded portion for cutting out a thread in a wall of a workpiece opening into which the threaded portion is to be introduced. The threaded portion is provided with...
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7544021 |
Rotary cutting tool with non-uniform distribution of chip-breaking features
A rotary cutting tool with a longitudinal axis is provided that includes a shank portion, a cutting portion, and a plurality of chip-breaking features. The cutting portion, which extends out from...
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7530772 |
Drill, such as a twist drill
A drill bit, such as a twist drill, having a body equipped with flutes, as well as a drill bit face that includes two main cutting edges that merge together. In order to drill a blind hole, such as...
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7520703 |
Twist drill with a pilot tip
An elongated drill bit has a shank at one end and working end at the other. A flute portion is between the working end and the shank. The flute portion is continuous with the shank and working end...
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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...
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7476067 |
Drill bit
A drill bit having a shank portion and a cutting portion, which cutting portion generally has at least one cutting edge and a chip flute that has a helical portion. The drill bit has at least one...
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7455485 |
Cutout bit for use with rotary tool
The cutout bit includes a first bit segment configured to be free of flutes. The cutout bit also includes a second bit segment extending from the first bit segment at a first location. Moreover,...
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7445411 |
Rotary cutting tool
A rotary cutting tool having a cutting insert slidably supported therein. The cutting insert is moveable from a retracted position to an extended position by means of a pressurized fluid which...
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7422396 |
Drill having construction suitable for enlarging previously formed hole
A drill which includes a cylindrical main body and a shank contiguous to each other, and which is to be rotated about an axis of the cylindrical main body in a predetermined rotating direction, for...
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7401667 |
Multi-purpose drilling tool
The present invention relates to a multi-purpose drilling tool with a boring head, a drill twist connected thereto and a downstream clamping shank, a cutting element ( 1 ) being provided on the...
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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...
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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...
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7371035 |
Drill insert geometry having V-notched web
The present invention relates to a V-notched web formed on a drill insert of a drill tool assembly. The V-notched web allows greater stability and feed rates, while decreasing the heat generated at...
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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...
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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...
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7364390 |
Drilling tool
Disclosed is a drilling tool comprising a first drill bit ( 2 ) that is provided with at least two forward cutting edges ( 4, 5 ) and a second drill bit ( 3 ) which encompasses at least two rear...
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7360974 |
Rotary cutting tool, such as a drill, comprising an exchangeable cutting insert, and an exchangeable cutting insert
A rotary cutting tool that is composed of a tool shank with at least one chucking groove or chip flute and one exchangeable cutting insert. At the tip of the shank a recess for accommodating the...
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7354229 |
Drill
A drill including a chisel edge provided at a tip end portion, a spiral first chip discharging groove and a spiral second chip discharging groove, land portions provided between the first chip...
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7351017 |
Solid drill bit for machine tools
A solid drill bit for machine tools has a drill bit body and two indexable inserts arranged at a radial distance from one another in respective insert seats. The inserts have an essentially...
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7338243 |
Thread-cutting screw
A thread-cutting screw ( 1 ) serves for being screwed into the bore-hole wall ( 1 a ) of a bore-hole ( 1 b ). It comprises a substantially cylindrical core ( 2 ) of metal which has a central...
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7338237 |
Drill and drill tip for chip removing machining
The present invention relates to a drill and a drill tip for chip removing machining. The drill has a drill body, a drill tip and a shank portion. The drill tip comprises at least one cutting edge...
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7314102 |
Percussion or hammer drill
A percussion or hammer drill is provided including a drill plate arranged in the head end of a drill shaft, extending completely across the diameter of the drill shaft and comprising an open front...
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7311479 |
Rotatable tool and a blank
The present invention relates to a tool as well as a blank for manufacturing of the tool. The tool is made of solid cemented carbide and includes a shank for mounting in a rotatable spindle and...
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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...
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7296954 |
Drilling tool for cutting cast materials
A drill for hard materials, comprising webs that are subdivided by means of cutting grooves, and at least one principal cutting edge, each of which is provided with a cutting corner and a...
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7290965 |
Tool, method, and apparatus for removing burrs from bores
A preferably rotationally driven tool is specified for the deburring of openings, such as for example bores that open laterally into an essentially cylindrical recess. The tool has a cutting head...
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7267514 |
Self-centering drill bit with pilot tip
An elongate drill bit ( 20 ) with a longitudinal axis (X-X) has a shank ( 28 ), a working end ( 24 ), and a fluted section ( 26 ) between the shank and the working end. The shank, the working end...
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7252465 |
Drill for chip removing machining
A drill for chip removing machining, including a front tip including at least one cutting edge and a chip flute. The chip flute is countersunk in an envelope surface of a body of the drill and...
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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...
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7237986 |
High speed metal drill bit
A metal cutting drill bit has a shank portion, a flute portion defining a helix angle and a tip. The tip has a primary cutting edge extending to an outer periphery of the drill bit. The primary...
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7207752 |
Reamer and method for reaming
The present invention discloses a reamer ( 20 ) and a method for reaming, for enlarging a pre-existing hole in a workpiece by rotational and axial cutting. The reamer ( 20 ) includes a body ( 24 )...
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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...
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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...
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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...
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7163363 |
Perforating drill
The invention concerns a drill including a generally cylindrical body, tipped with a head and provided, over at least part of its length, generally spiral evaporating grooves. The groove(s) are...
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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...
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7134816 |
Rotatable tool for chip removing machine
A cutting tool for rotary cutting includes a rotatable basic body and a replaceable cutting part or loose top, which is connectable to the basic body via a male/female coupling, which includes a...
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7131799 |
Cutting insert with helical geometry and holder therefor
A cutting tool insert and holder therefore, the drill insert having a helical geometry corresponding to helical flutes in a drill body holder which enable the drill tool assembly to more...
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7125252 |
Drilling instrument in particular for drilling dental root canals
The invention concerns a drilling instrument ( 10 ), in particular for drilling dental root canals comprising a base ( 11 ) and a guide section ( 13 ) as well as a polygonal cutting section ( 12 )....
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7114892 |
Rotatable tool for chip removing machining
A rotatable tool for chip removing machining includes a drill shank, and an exchangeable loose top mounted at an axially front end of the shank. Between these there is a coupling, which includes a...
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7101125 |
Twist drill
A twist drill including a cutting tip having a front flank face, a substantially cylindrical tool body extending rearwardly from the cutting tip, and a shank. The tool body includes a rotational...
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7070367 |
Twist drill for drilling having a replaceable drill tip, and a replaceable drill tip for use in a twist drill
A twist drill, having a replaceable drill tip, comprising a drill bit shaft ( 1 ), a cutting insert ( 2 ) which is detachably fixed thereto and which forms the tip area of the twist drill, and...
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7018144 |
Drill
The drill of the present invention has only one cutting discharge groove ( 11 ) formed in the outer periphery of a bit ( 10 ). A leading edge protruding farthest towards the tip in the axial...
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7018143 |
Reduced energy consuming, lateral cutting twist drill
A modified prior art twist drill embodies structural features that require less energy to drill a hole during a normal plunge operation and allow for lateral cutting movement during extraction of...
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7008150 |
Twist drill for drilling, a drill with a cutting insert, and a replaceable cutting insert for a twist drill
On a drill with a base body and a replaceable cutting insert, the cutting insert lies in a receptacle that runs through the base body at a right angle to the latter's longitudinal axis and is open...
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6988859 |
Drill bit and method for grinding a drill bit
The invention relates to a drill bit ( 2 ), having main cutting edges ( 4 a , 4 b ) which are connected together by a transversal cutting edge ( 6 ). An open surface ( 7 ) which extends into a...
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