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| Number | Title | Issue Date |
| 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 the shank portion, includes a length, a plurality of blades and a plur... | 06/09/2009 |
| 7399147 | End mill bit with notched teeth An end mill is provided with a plurality of teeth extending helically therealong, and with the teeth notched. The notches interrupt the cutting edge of the teeth at various different positions between a tip of the tooth and a root of the tooth. Various different pat... | 07/15/2008 |
| 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 |
| 7367754 | Variable helix rotary cutting tool A rotary cutting tool has a substantially cylindrical main body and four flutes. The main body has a shank end, a cutting end formed integrally opposite the shank end, and a longitudinal axis of rotation. The four flutes include a pair of flutes comprising a first f... | 05/06/2008 |
| 7337523 | Methods and apparatus for an annular core cutter An annular core cutting apparatus includes a cutting head including a generally cylindrical sidewall having a first end and a second end, wherein the first end has a cutting edge, and wherein the sidewall includes a plurality of openings having at least one sharpene... | 03/04/2008 |
| 7322774 | End mill and a method of operating an end mill An end mill for cutting or milling objects and a method of operation thereof. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in 37 C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification... | 01/29/2008 |
| 7232311 | Bur for preparing metal substrates A method and bur is described for preparing a surface of a metal substrate. The bur includes a shank portion and a cutting head. The cutting head includes a base portion connected to the shank portion, a tip portion opposite the base portion and a plurality of simil... | 06/19/2007 |
| 7204663 | Multi-purpose end-mill A multi-purpose end-mill to be used for different machining purposes, in particularly useful for closed or open contours machining. The end-mill comprises a cylindrical shank portion connected to a first cutting portion provided with a plurality of spaced-apart cutt... | 04/17/2007 |
| 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 |
| 7134811 | Helical end mill type cutter configured to compensate for radial runout An end mill type rotary cutting tool and associated cutting inserts that collectively compensate for radial pocket runout, thereby eliminating overlap marks in a machined work piece. The tool has pockets arrayed in helical flutes such that after one insert has abrad... | 11/14/2006 |
| 7090442 | Shaper router and method A routing tool for cutting material and an associated apparatus and method are provided. The tool includes a substantially cylindrical shaft member having a shank portion and a cutting portion. The cutting portion includes a plurality of cutting teeth disposed perip... | 08/15/2006 |
| 6991409 | Rotary cutting tool A rotary cutting tool that includes an elongated tool body, rotatable along a longitudinal axis of rotation is disclosed. It has a fluted cutting end on one end and a shank end on the opposite end of the tool body. The fluted cutting end includes a nose, a periphery... | 01/31/2006 |
| 6976811 | Milling cutter A cutting tool for cutting a workpiece comprising a tool body having an outer surface thereon and a central axis therein and including at least a first and second spiraling flute in the outer surface, each flute including a plurality of inserts secured therein to de... | 12/20/2005 |
| 6435780 | Rotary cutting tool An improved end milling tool effective to reduce forces produced in ramp cutting comprises a plurality of end cutting edges, and a plurality of side cutting edges, each end cutting edge lying parallel to a radius of the tool tip and intersecting a side cu... | 08/20/2002 |
| 6164876 | Cutting tool A cutting tool having a body that is cylindrical in shape having a shank at one end and a cutting end opposite thereof. The cutting end has an even number of flutes thereon with every other flute being a cutting flute, such as a knuckle flute including a ... | 12/26/2000 |
| 6065905 | Rotary cutting tool with enhanced damping A rotary cutting tool such as an endmill includes a coating on its radial relief surfaces for enhancing damping of vibratory motion of the tool at speeds which permit the relief surfaces to rub on the workpiece being machined. The coating has a hardness s... | 05/23/2000 |
| 6056485 | Ramp plunge and feed milling cutter A ramp, plunge and feed milling cutter having a cylindrical body with cutting ribs protruding beyond the length of the cylindrical body to define a cavity. The integral single-piece construction of the milling cutter permits the fabrication of small diame... | 05/02/2000 |
| 5947649 | Reusable type end mill First and second tips 4A and 4B are disposed on the outer periphery of the forward end of an end mill body 1 in a manner such that the tips 4A and 4B are displaced from each other about the periphery of the end mill body 1. The rotation loci of edges of t... | 09/07/1999 |
| 5944456 | Three dimensional mill and milling inserts A three dimensional mill capable of plunging, ramping, circle interpolating and other milling processes while providing a finished surface not in need of finish grinding. The milling cutter includes cutting inserts of a modified design including flats sep... | 08/31/1999 |
| 5913644 | Helical mill having multiple flutes with differing rake angles A multiple fluted helical end mill with at least two flutes. Each flute includes a plurality of inserts secured therein. The inserts are all identical. The inserts in different flutes being secured therein at different rake angles. The different rake angl... | 06/22/1999 |
| 5908269 | Helical cutter geometry for a cutting tool used to manufacture turbine rotors A cutting tool for machining a work piece to form a turbine rotor having a longitudinal axis includes a plurality of curved splines extending from a back of the tool to a front of the tool. Each spline is curved so that it is not parallel to a plane perpe... | 06/01/1999 |
| 5904449 | Cutting insert and cutting tool using the same A cutting tool including a toolholder for releasably receiving a plurality of quadrilateral cutting inserts in which adjacent cutting inserts are partially nested for their greater compaction and whereby their operative cutting edges overlap so as to pres... | 05/18/1999 |
| 5893400 | Debarker head assembly An improved debarking apparatus, which includes a substantially, cylindrically shaped debarker head having a plurality of cutting blades to form its out peripheral surface, the debarker head mounted on a central shaft so that it may rotate freely on the s... | 04/13/1999 |
| 5882150 | Indexable end mill A indexable end mill of the present invention comprises a helical flute formed in the outer periphery of a shank as inclined at a required angle with respect to the axis of the shank, a plurality of indexable inserts attached to places in the helical flut... | 03/16/1999 |
| 5636948 | Drill for synthetic fiber filled plastic and like materials A drill for fiber-filled synthetic plastics has an axially extending body with helical grooves spiraling from a drill point toward a shank end. The grooves define helical lands between them having helical land machining edges. At the point axially taperin... | 06/10/1997 |
| 5425603 | Shell end mill The invention relates to a shell end mill with a holder (12), a two-piece cylindrical cutting section (10) releasably secured to the holder (12), at least two helical chip grooves (18) at a circumferential distance apart in the cutting section (10), a set... | 06/20/1995 |
| 5226760 | Cutting tool with twisted edge and manufacturing method thereof The invention relates to a cutting tool having twisted edge in a blade part, having a sintered compact with higher hardness and higher wear resistance than a base sintered body buried and affixed along the twisted edge, and its manufacturing method. The b... | 07/13/1993 |
| 5193944 | Nicked cutting tool A nicked cutting tool enables high speed cutting in cutting process of advanced materials such as compound materials. The nicked cutting tool has a cylindrical main body with one end forming a cutting part and the other end a shank part to be mounted on a... | 03/16/1993 |
| 5168907 | Debarker head A Rosser type debarker head has a plurality of rounded, indexable cutting teeth spaced in patterns of repeated rows running axially the length of the cylindrical surface, each tooth being spaced along the cylindrical surface so that the total cutting patt... | 12/08/1992 |
| 5122134 | Surgical reamer The cutting head for a surgical reamer has a leading end for insertion into a bone canal and a trailing end for attachment to a drive shaft. The cutting head has a cutting surface formed about an axis of rotation of the cutting head. The cutting surface i... | 06/16/1992 |
| 5094573 | Multidirectional cutting tool A cutting tool and method for cutting multidirectional cuts in a workpiece. The cutting tool has a body portion having a generally cylindrical outer wall and inner periphery. A plurality of cutting teeth are spaced circumferentially around the lower end a... | 03/10/1992 |
| 5083887 | Helical cutting tool A helical cutting tool having a plurality of cutting inserts of quadrilateral configuration removably attached to seats formed in the cutting tool, with each insert including a cutting edge extending in the axial direction bounded on opposite sides by a p... | 01/28/1992 |
| 4990035 | Contour milling cutter A cutting tool for machining printed circuit boards and the like includes a cutting part having an longitudinal axis of rotation, an outer surface, and a plurality of staggered teeth formed on the outer surface. The cutting part has a first predetermined ... | 02/05/1991 |
| 4988241 | Cutter with angled diamond inserts A cutter body (22, 22') has a slot (26, 26') opening onto its nominal outer cylindrical surface (24) and extending along a plane that intersects the cutter axis (X) at an acute axial rake angle (A). A flat cutter blade insert (40) with an elliptical polyc... | 01/29/1991 |
| 4936361 | Rotary cutter A rotary cutter bar for a tree felling apparatus. The bar comprises a cylindrical rod having a plurality of raised cutting teeth on its surface. Each tooth is in the form of a short curved bar. The teeth are located on a plurality of equally spaced-apart,... | 06/26/1990 |
| 4907920 | Milling cutter for honeycomb core material A milling cutter tool for cleanly and smoothly cutting honeycomb core material is disclosed. The cutter tool includes a circular saw blade sharpened to a knife edge. A bevel extends from the upper surface towards the sharp peripheral edge. A plurality of ... | 03/13/1990 |
| 4844666 | Insert rotary cutting tool An insert rotary cutting tool includes a tool body of a generally circular cross-section having an axis of rotation therethrough and having an outer periphery. The cutting tool has plural groups of cutting inserts releasably mounted on the outer periphery... | 07/04/1989 |
| 4812087 | End mill cutting tool and indexable insert therefor An end milling tool having a positive axial rake angle in side elevation to facilitate removal of chips from the surface of a workpiece and a curved cutting edge having a neutral (zero) to positive rake angle in bottom plan view as it progressively cuts t... | 03/14/1989 |
| 4810136 | Milling cutter for composite laminates A spiral four fluted rotary carbide cutter has a one directional helix throughout much of its length, and a reverse directional helix adjacent the cutting end. Opposite lands, between the flutes, have square cornered axially aligned and equally spaced not... | 03/07/1989 |
| 4790693 | Interfitting on-edge inserts for milling cutters Shown and described is an on-edge cutting insert for milling cutters in the form of a flat six-sided block having two parallel major faces which are seating and clearance faces, and two opposed edge surfaces which are rake faces which intersect at least o... | 12/13/1988 |
