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Class 408/229 - With axially extending relief channel


Subclass of Class 408 - Cutting by use of rotating axially moving tool
Definition: Device wherein the tool is provided with a void area of
No. of patents: 103
Last issue date: 10/28/2008


1      
NumberTitleIssue Date
7441991Chamfering tool
A circular truncated cone-shaped cutting section (3) of a chamfering tool (1) is formed with a first blade section (31) which is tilted so that a chip is discharged to a side of a shank section (2), and a second blade section (32) ...
10/28/2008
7393162Gun drill
A gun-drill comprises a cutting-head detachably secured to a shank, having a common longitudinal axis and comprising mating peripheral surfaces. A shank coupling portion comprises a forwardly tapering shank fixation surface is formed at a front end of the shank, and...
07/01/2008
7392857Apparatus and method for vibrating a drill bit
In one aspect of the invention a drill bit comprises an axis of rotation a body and a working face. The body comprises a fluid passageway with a first seat and houses a jack element substantially coaxial with the axis. A stop element is disposed within the passagewa...
07/01/2008
7351017Solid 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 quadratic contour. Their front-end main cutting edges project axially beyond...
04/01/2008
7326009Edge-carrying drill body having an internal chip-removal channel
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 bri...
02/05/2008
7325471Toolholder 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
7322265Compound screwdriver head
A compound screwdriver head, which comprises a first working portion and a second working portion of the same size, the first, second working portion of the bigger size is used for screwing and unscrewing a bolt of bigger, smaller size respectively, so that differen...
01/29/2008
7278806Two 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
7264427Drill bit apparatus
A drill bit apparatus having a central shaft and an annular collar mounted thereon. The central shaft is coaxially positioned within the annular collar. The central shaft has a bit end and a cutting tool end. The annular collar is spaced between the bit and cutting ...
09/04/2007
7226250Tool and method for forming a lug hole
A single tool that provides multiple machining operations for forming a lug hole through a vehicle wheel hub includes an end portion having a first diameter and a mid-portion having a second diameter that is greater than the first diameter. A spade drill bit is moun...
06/05/2007
7201542Solid drill bit for machine tools
A solid drill bit for machine tools. has a bit body and two movable inserts located a radial distance apart in insert seats of the bit body. The inserts have a rectangular or quadratic contour, project axially over the bit body with their major cutting edges and ove...
04/10/2007
7198436Multi-blade router tool, edger with multi-blade router tool, and method of edging eyeglass lenses
The present invention relates to a router tool for edging the peripheral edge of eyeglass lenses. The tool comprises a longitudinally extending body rotatable on the axis thereof. A first blade extends axially and radially from the body, and has a first cutting port...
04/03/2007
7195428Gundrill
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
7147414Spur point drill insert
A cutting tool insert having a specialized spur point geometry at the center of the insert. The insert comprises a spur point cutting portion and a blade cutting portion wherein the spur point provides stability by providing a spot and allowing a flexible workpiece ...
12/12/2006
7140815Drill 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
7066694Cutting plate for a drill bit
A cutting plate (4) has a working end (20) to engage a workpiece and an axis (8) of rotation. A pair of oppositely arranged first faces (34) are inclined axially rearward from the working end (20) in an axial plane intersecting sai...
06/27/2006
7044694Router bit with position stop
A router bit with a position stop is disclosed. The router bit includes a body with a collar extending outwardly from it and a shaft extending outwardly from the collar. At least one cutter blade is mounted to the body and the cutter blade may be used to cut a profi...
05/16/2006
7004691Deep hole cutter
A deep hole cutter for a gun drill system includes a tool shank and a cutting head with two or more cutting edges. The tool shank and the cutting head are separate members connected strongly by threads. The shavings produced by the cutting edges can be discharged to...
02/28/2006
6976815Milling cutter having three continuously curved cutting edges
A milling cutter includes a body having three cutting edges formed by the body. An end of the body situated opposite the cutting edges defines a fastening end of the milling cutter. Each cutting edge extends from an outer periphery of the body substantially to a cen...
12/20/2005
6929434Rotary cutting tool
There is now provided a rotary cutting tool, particularly a drill, that has at least two cutting edges that respectively comprise a main cutting edge and that respectively are disposed, particularly symmetrically, with respect to the central axis of a cutter portion...
08/16/2005
6926475Tool for machining workpieces
A tool for machining workpieces, having a parent body which can be expanded at least zonally, having at least one geometrically defined cutting edge projecting beyond a circumferential surface of the tool, and having a setting device influencing the radial distance ...
08/09/2005
6913428Tool for the precision machining of surfaces
A tool for the precision machining of surfaces in workpieces comprising at least two cutter inserts in the periphery of the tool body and each having at least one defined cutting edge. The cutter inserts are of different materials at least in the region of the at le...
07/05/2005
6902359Drill insert with controlled contact clearance
A cutting tool insert having a controlled contact clearance behind the cutting edge which limits flank wear and allows more coolant near the cutting edge further allowing an increase in surface speed, feed rates, and tool life. The controlled contact clearance surfa...
06/07/2005
6902357Cutting tool
A rotatable cutting tool having s support region (1) with an end surface (2) and a plurality of recesses (4) extending from the end surface (2) and in which, respectively, a plurality of cutting elements (5) are arranged, with each...
06/07/2005
6644899Drill bit and process of producing a drill bit with improved cutting edges
The invention relates to a drill, especially a Forstner bit or a multi-spur machine bit having a drill shaft and a cutter head and provided with a central mandrel, a first and second spur cutter radially extending towards the outside from said mandrel and...
11/11/2003
6637989Center locating feature in drill bit formed without a pointed tip
A centering feature (230) on a drill bit (110) configured without a pointed tip, formed as an opening (230) between first (206) and second (208) relatively angularly inclined portions of a work engaging end (116) of the drill bit (110). The first portion ...
10/28/2003
6595730Bit for removing damaged screws
This bit has an axis and a tip end with an obtuse angle. There are multiple scraping surfaces, each facing counter-clockwise into a longitudinal recess in the tip end. Each scraping surface has a scraping edge at an angle of about 55° to 70° to the axis...
07/22/2003
6568883Method of finishing inner circumferential surface, and reamer
A reamer includes: (a) an axially-distal-end small-diameter portion; (b) a guide portion which is axially adjacent to the small-diameter portion; (c) at least one flute which is formed in an outer circumferential surface of the reamer and which extends fr...
05/27/2003
6551036Drilling bit and holder for drilling bit
This invention describes a drilling plate and bracket for the drilling plate for machining drilled holes in work pieces, whereby the bracket for the drilling plate is designed so that it is somewhat pin-shaped and holds the drilling plate on its front sid...
04/22/2003
6503030Reamer
A reamer for the fine machining of surfaces of drilled holes in metal workpieces has a reamer body and at that body has at least one main blade and at least one auxiliary blade, a chip surface adjoining the blades at one side and a chip deflector step lim...
01/07/2003
6379090Force balanced irregular pitch reamer and associated reaming method
A force balanced irregular pitch reamer is provided that is particularly well suited for precision operations requiring small tolerances. More specifically, a reamer is provided having a shank, a body portion, and a plurality of cutting teeth extending ou...
04/30/2002
6315504Twist Drill
An improved twist drill is provided which reduces wear or chippings of the major cutting edges (3) and those of the leading edges (7) of land (9) and which has a long service life and stays sharp. A twist drill has a pair of chip discharge flutes (6), a p...
11/13/2001
6276881Method of manufacturing slotted component
Apparatuses and methods are implemented for machining a longitudinally extending slot in a bore of a component. The component is gripped in a gripping device of a workholding device. A cutting operation is performed in order to cut the slot in the bore by...
08/21/2001
6206618Rotary pipe cutting apparatus
A rotary pipe cutting apparatus for removing sections of broken pipe from the bore of an outer pipe. The invention includes a cylindrical body with a longitudinal slot that is angularly offset from the rotational axis of the body and which is tapered in d...
03/27/2001
6190097Self-centering drill bit with pilot tip, and process
Significantly improved resistance to breaking while drilling in metal can be realized in twist drill bits having a web thickness taper which is about twice the web thickness taper specified in Standards and in common use in the industry. This creates much...
02/20/2001
6183173Rotary shaft tool
A rotary shaft tool for machining bores, particularly blind hold bores, has a shaft with at least one longitudinal conduit for coolant/lubricant, with a cutter head that has at least one cutting edge and a chip space. A chip space section is provided that...
02/06/2001
6132149Twist drills
A helical twist drill has fluted lands each having projecting from their radially outer faces a plurality of circumferentially spaced support margins. At least one of the support margins is asymmetrically spaced with respect to the other support margins....
10/17/2000
6050754Self-centering drill bit with pilot tip, and process
Significantly improved resistance to breaking while drilling in metal can be realized in twist drill bits having a web thickness taper which is about twice the web thickness taper specified in Standards and in common use in the industry. This creates much...
04/18/2000
6030156Drill and sharpening fixture
A single point drill particularly adapted to producing small diameter deep holes utilizing a peck feed cycle routine. The preferred embodiment features a limited flute length with a depth approximately 1/3 the drill diameter and a dual point edge consisti...
02/29/2000
6000887Stiff drill
A generally cylindrical drill, particularly an insert drill having multiple cutting inserts, helical chip grooves to clear the chips from the hole, and a gripping shank opposite the cutting end of the drill, wherein the drill experiences an unbalanced res...
12/14/1999
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