Kennametal Inc.

Tdy Industries, Inc.

Jean-Luc Daniel Dufour

David J Wills

X Daniel Fang

Gilles Festeau

Xiangdong Daniel Fang

Thomas B Hartman

Kent Peter Mizgalski

Lance David Brunetto

David Cope

Frederick John Palmer

Michael R Cripps

Kelvin G L Hobbs

Daniel X Fang

An indexable milling cutter includes a milling cutter body with a plurality of flutes and a plurality of seating surfaces adapted to mount a cutting insert thereon. The milling cutter body includes a plurality of coolant reservoirs in fluid communication with an adapter. In one aspect, each coolant reservoir lies along a circular intersection line of a coolant manifold. In another aspect, a longitudinal axis of each coolant reservoir is oriented at a non-zero angle, A, with respect to a central, longitudinal axis of the milling cutter. A plurality of coolant ducts in fluid communication with each coolant reservoir, each coolant duct having a smaller cross-sectional area than the coolant reservoir, provide multiple streams of coolant targeted at a plurality of specific critical cutting areas of the cutting insert.

Indexable milling cutter with precise coolant streams

Cutting tool systems including a tool holder and tangential cutting inserts are disclosed. The tangential cutting inserts have indexable cutting edges that may be sinusoidal-shaped and helical-shaped. The tangential cutting inserts have integrated fan and base portions. The tool holders comprise a plurality of insert pockets structured and arranged to receive the indexable tangential cutting inserts. The cutting tool systems provide cutting tools with effectively longer sinusoidal and helical cutting edges at their cutting rake faces and a strong support when seating in insert-receiving pockets on the tool holder.

Indexable tangential cutting inserts and cutting tool holders

A double-sided tangential cutting insert comprising a pair of cutting rake faces, a pair of major side surfaces and a pair of opposing minor side faces each having a twisted convex shape. Each of the cutting rake faces is defined between a pair of main cutting edges, a pair of full nose cutting edges, and a pair of opposing convex minor cutting edges. Each of the minor side faces is defined between one of the convex minor cutting edges at one of the rake faces and one of the convex minor cutting edges at the other one of the rake faces wherein, at each minor side face, a ridge line interconnects an apex of the convex minor edge at the one of the rake faces and an apex of the convex minor cutting edge at the other one of the rake faces. Other variants and embodiments are broadly contemplated herein.

Double-sided tangential cutting insert

A double-sided tangential cutting insert, as well as a tool holder system that carries a plurality of the double-sided tangential cutting inserts, that has a peripheral side shape, as viewed from one of said cutting rake faces, that includes a pair of generally identical opposing main cutting edges wherein each of the main cutting edge comprises a substantially straight main cutting edge portion and an adjoining convex main cutting edge portion. The convex main cutting edge portion is truncated by an adjacent convex minor side face so as to define a generally sharp edge and a point of truncation. The peripheral side shape further includes a pair of opposing full nose cutting edges with a nose cutting radius; and a pair of opposing convex minor cutting edges with a minor cutting edge radius. The minor cutting edge radius is at least about four times greater than the nose cutting radius.

Double-sided tangential cutting insert and cutting tool system using the same

A ballnose cutting insert has a top face, a bottom face, a plurality of side clearance faces, a first nose corner, a second nose corner, and a first elongate cutting edge at the top face, a second elongate cutting edge at the top face, and a fastener bore with a center. There is a first open-end notch below the first nose corner, and a second open-end notch below the second nose corner. The first open-end notch is defined at least in part by a first generally planar engaging surface, and the second open-end notch is defined at least in part by a second generally planar engaging surface. The first generally planar engaging surface is disposed at a disposition angle relative to the second engaging surface, and the disposition angle is not equal to zero degrees. The first generally planar engaging surface is disposed from the center of the fastener bore a first abutment distance as measured along a line perpendicular to the first generally planar engaging surface. The second generally planar engaging surface is disposed from the center of the fastener bore a second abutment distance as measured along a line perpendicular to the second generally planar engaging surface. The first abutment distance is equal to the second abutment distance.

Ballnose cutting tool and ballnose cutting insert

A cutting tool system is designed to have a combined sinusoidal-shaped and helical-shaped cutting edge formed by an assembly of aligned common cutting inserts each having a sinusoidal and helical cutting edge.

Cutting inserts and cutting tool systems having sinusoidal and helical cutting edges

A double-sided cutting insert for a drilling tool includes a top side, a bottom side, and at least one side surface interconnecting the top side and the bottom side and forming at least one cutting edge. The top side and the bottom side comprise a different external profile and chip groove geometry and an identical inscribed circle, and each of the top side and the bottom side comprises four indexable cutting edges.

Double-sided cutting insert for drilling tool

A cutting insert for milling operations, such as, face milling, slot milling, plunge milling, and ramping operations. The cutting insert exhibits a combination of favorable cutting edge strength, and unique cutting edge geometry, thus, allowing milling operations at relatively high feed rates. The cutting insert includes at least four cutting edges, wherein at least one of the cutting edges is a convex cutting edge. Certain embodiments of square cutting inserts will have four convex cutting edges which may be connected by nose corners. The convex cutting edge may comprise at least one of a circular arc, a portion of an ellipse, a portion of a parabola, a multi-segment spline curve, a straight line, or combinations of these. Wherein the convex cutting edge comprises a circular arc, the circular arc may have a radius greater than or equal to two times a radius of the largest circle that may be inscribed on the top surface.

Cutting insert for high feed face milling

A double-sided cutting insert may generally comprise: a top surface; a bottom surface; at least one side surface interconnecting the top surface and the bottom surface and forming at least one cutting edge; a through hole extending between the top surface and bottom surface; and wherein each of the top surface and bottom surface comprise an anti-rotation element comprising a single recess comprising a generally cyclic conical periphery. Each of the top surface and bottom surface may comprise at least one cyclic conical face. The recess may comprise a geometry that is complementary to the at least one cyclic conical face of the projection in an insert receiving pocket in a tool holder. A cutting tool incorporating one or more of the cutting inserts, and methods of making and using the cutting inserts are also described.

Double-sided cutting inserts with anti-rotation features

A cutting insert fastener adapted to secure a cutting insert to a cutting tool holder. The fastener comprises a fastener head portion comprising at least one feature adapted to direct a coolant fluid to an insert cutting edge of a cutting insert when the cutting insert is secured to a cutting tool holder by the cutting insert fastener. Cutting tools comprising internal coolant systems and fastened with a cutting insert fastener comprising a fastener head portion with at least one feature adapted to direct a coolant fluid to an insert cutting edge are also disclosed.

Cutting tool including an internal coolant system and fastener for a cutting tool including an internal coolant system

One non-limiting aspect of the present disclosure is directed to a multi-piece twist drill head. The multi-piece twist drill head includes a core piece formed from a first hard material, and a peripheral piece formed from a second hard material. The core piece and peripheral piece each comprise a cutting edge and are adapted to mate to provide a central region and a peripheral region, respectively, of the multi-piece twist drill head. A twist drill including the multi-piece twist drill head is also disclosed.

Multi-piece twist drill head and twist drill including the same

The present invention relates to embodiments of a cutting tool holder having at least one insert pocket, wherein at least one insert pocket comprises a side surface and at least one antirotation stop protruding from the side surface.

Antirotation tool holder and cutting insert

Cutting inserts are described having at least two discontiguous clearance faces. Cutting tool systems including the cutting inserts are also described. An indexable cutting insert includes a top face, a bottom face, and at least two clearance faces connecting the top face and the bottom face at a periphery of the cutting insert. The at least two clearance faces include a primary clearance face contiguous with the top face and forming a cutting edge at an intersection of the primary clearance face and the top face, and a secondary clearance face discontiguous with the primary clearance face and separated from the primary clearance face by a bridge surface, and wherein a primary clearance angle formed by the primary clearance face is larger than a secondary clearance angle formed by the secondary clearance face.

Growing community of inventors

Greensburg, PA, United States of America

Jean-Luc Daniel Dufour