Abstract: In one aspect, rotary cutting tools are described comprising clearances with projections adjacent the cutting edge and extending the width and length of the clearance surface of each tooth. This design can assist in reducing vibration or chatter during cutting operations.

Abstract: One aspect of the invention provides a cutting tool used for peripheral cutting operations, comprising: a plurality of peripheral cutting edges, and a plurality of flutes disposed between the peripheral cutting edges, wherein each of the flutes includes at least one surface, and at least one depression recessed into the at least one flute surface, wherein each of the depressions defines a depression interior configured to trap cooling liquid during operation of the cutting tool, and wherein at least one of the depressions is dimensioned and disposed to enhance heat dissipation at least one of the peripheral cutting edges.

Abstract: In one aspect, elongated rotary cutting tools such as end mills are described herein which may provide one or more advantages over prior designs. For example, in some embodiments, cutting tools described herein can provide reduced wear rates at corner cutting edges, may permit high ramp angles during processing up to and including 45° ramp angles, and/or increased tool life.

Abstract: In one aspect, rotary cutting tools are described comprising clearances with projections adjacent the cutting edge and extending the width and length of the clearance surface of each tooth. This design can assist in reducing vibration or chatter during cutting operations.

Abstract: In one aspect, elongated rotary cutting tools such as end mills are described herein which may provide one or more advantages over prior designs. For example, in some embodiments, cutting tools described herein can provide reduced wear rates at corner cutting edges, may permit high ramp angles during processing up to and including 45° ramp angles, and/or increased tool life.

Abstract: One aspect of the invention provides a cutting tool used for peripheral cutting operations, comprising: a plurality of peripheral cutting edges, and a plurality of flutes disposed between the peripheral cutting edges, wherein each of the flutes includes at least one surface, and at least one depression recessed into the at least one flute surface, wherein each of the depressions defines a depression interior configured to trap cooling liquid during operation of the cutting tool, and wherein at least one of the depressions is dimensioned and disposed to enhance heat dissipation at least one of the peripheral cutting edges.

Abstract: In one aspect, collets are described herein employing a central bore having a stepped architecture. For example, a collet described herein comprises a clamping portion having a central bore for receiving a coupling portion of a cutting tool or cutting tool blank. The central bore has a stepped architecture comprising an inner section of first diameter, a transition section of second diameter, and an outer section of third diameter.

Abstract: A face milling cutter has a shank portion adjoining a cutting portion. The cutting portion terminates in a plurality of cutting edges extending in a radial direction from a central axis of the face milling cutter. The cutting edges are convexly curved at least along a part of their length. A portion of the cutting edges proximate the central axis is nearer in an axial direction to the shank portion than a point, X, on the cutting edges that is farthest away from the shank portion. A distance Y, between the point, X, and the central axis is between 20% and 40% of a diameter, D, of the face milling cutter, and a central portion extends the distance, Y, and has a radius of curvature of about 110% of the diameter, D.

Abstract: A method of making chatter-resistant end mills includes: (a) forming an end mill having unequal angular spacing between adjacent teeth, (b) cutting a test work piece with the end mill and measuring vibrations and resonance; (c) upon detecting undesired levels of vibration and resonance, adjusting the angular spacing between adjacent teeth to reduce vibration and resonance and forming another end mill having the adjusted angular spacing; (d) cutting a test work piece with the adjusted end mill and measuring vibrations and resonance; (e) repeating steps (c) and (d) until an end mill is formed in which vibration produced by the angular spacing between at least one pair of adjacent teeth cancels out at least a portion of the vibration produced by the angular spacing between at least one other pair of adjacent teeth; and (f) making at least one production end mill conforming to step (e).

Abstract: A rotary cutting tool formed from a blank, the rotary cutting tool comprising at least one tooth having a root, a cutting edge formed of veined PCD, and a face disposed between the root and the cutting edge. The face, as viewed in a cross-section perpendicular to an axis of the cutting tool, includes a first curved surface proximate the cutting edge and a second curved surface proximate the root and the first curved surface. For each cutting edge, the blank is provided with a respective groove having a leading surface that corresponds in shape to the first curved surface of the respective tooth.

Abstract: A chatter-resistant end mill and a method of making such an end mill, in which the teeth of the end mill are unequally spaced apart to substantially reduce or eliminate vibrations produced during cutting of a work piece.

Abstract: A face milling cutter. The abstract of the disclosure is submitted herewith as required by 37 C.F.R. §1.72(b). As stated in C.F.R. §1.72(b): A brief abstract of the technical disclosure in the specification must commence on a separate sheet, preferably following the claims, under the heading “Abstract of the Disclosure.” The purpose of the abstract is to enable the Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract shall not be used for interpreting the scope of the claims. Therefore, any statements made relating to the abstract are not intended to limit the claims in any manner and should not be interpreted as limiting the claims in any manner.