Iscar, Ltd.

Leonid Shpigelman

Alexander Khina

Eliyahu Budda

Alexander Koifman

Igor Segal

An end mill includes a plurality of teeth and flutes. The teeth and their associated flutes include one or more correlated physical parameters. One such correlated parameter is that, at an axial location in a front half of an effective cutting length, at least one tooth of the plurality of teeth has a rake angle smaller than an average rake angle value of the plurality of teeth, and, at the same axial location, a flute preceding each such tooth has a helix angle larger than an average helix angle value of the plurality of flutes.

End mill having teeth and associated flutes with correlated physical parameters

An end mill for shouldering and/or slotting applications includes at least one tooth including a cutting edge. The cutting edge includes a first sub-edge extending rearwardly from a cutting end face and a second sub-edge extending rearwardly from the first sub-edge. An angle transition intersection defines where the first sub-edge ends and the second sub-edge starts. The angle transition intersection is located generally between 20% to 75% of an effective cutting length from a cutting end face and more specifically at a location within the general location where there is an increase in the rake angle and/or a significant increase in the helix angle of the cutting edge.

End mill having a peripheral cutting edge with a variable angle configuration

A corner radius end mill includes a tooth adjacent a helically extending flute. The tooth includes axial and radial relief surfaces connected by a corner relief surface, as well as rake surface having a rake ridge. The rake ridge is continuously curved from a bisector line until at least an axial location rearward of the corner relief surface.

Cemented carbide corner radius end mill with continuously curved rake ridge and helical flute design

An end mill includes a tooth having a convex radial relief surface, a corner with a circular arc profile, a rake surface and a corner relief surface. The corner relief surface extends rearward of a radial tangent plane defined in relation to the circular arc profile.

End mill convex radial relief surface and corner having circular arc profile

An end mill having a plurality of teeth configured for both roughing and semi-finishing applications, the teeth being alternated with a plurality of flutes. At least one tooth of the plurality of cutting teeth is a serrated tooth formed with serrations along a relief surface thereof and at least one other tooth is free of serrations. Each tooth of the plurality of cutting teeth includes an actual internal cutting angle formed at an intersection of a rake cutting sub-surface and a relief surface. The actual internal cutting angle of each tooth has a greater value than an imaginary internal cutting angle formed at an intersection of imaginary extension lines of a rake recessed sub-surface and a relief surface of the same tooth.

Roughing and semi-finishing end mill having serrated and non-serrated cutting teeth

A rotary cutting tool, having a longitudinal axis, includes cutting and mounting portions. The cutting portion includes an end face surface and a peripheral surface extending therefrom. The peripheral surface includes respective pluralities of main and auxiliary flutes that extend helically with opposite hand about the longitudinal axis. The cutting portion includes a plurality of evenly circumferentially distributed end gashes and a plurality of end face cutting teeth. The number of main flutes and auxiliary flutes are different, each being wholly divisible by, and greater than, the number of end face cutting teeth. In each cross sectional view of the cutting portion an imaginary contour line defined by a peripheral contour of the peripheral surface of one of the end face cutting teeth is in rotationally aligned relationship, about the longitudinal axis, with the peripheral contour of the peripheral surfaces of all other end face cutting teeth.

Growing community of inventors

Carmiel, Israel

Leonid Shpigelman