A milling tool for milling and/or drilling workpieces, which is rotatable in a direction of rotation about an axis of rotation during machining, comprising a milling head, which has a radius cutter that describes a portion in the form of a circular arc such that the milling head takes up a partially spherical, in particular a hemispherical volume, in rotation, a main body, which has a main feature in the form of a helical recess with respect to the rotation volume taken up by the rotating milling tool in order to form a conveying helix, wherein the main feature is provided with a cutting edge as main cutter, wherein the main feature has a smooth lateral surface arranged on the side facing away from the main cutter in the direction of rotation.

In an end mill, a peripheral cutting edge portion has a peripheral cutting edge formed in a spiral shape around an axis, a peripheral rake face formed on the front side of the peripheral cutting edge in the rotating direction and bordering thereon and a peripheral flank formed on the rear side of the peripheral cutting edge in the rotating direction and bordering thereon. The peripheral flank has a first peripheral flank formed in a position on the mill body tip side to have a first clearance angle and a second peripheral flank formed in a position on the mill body end side of the first peripheral flank and neighboring the first peripheral flank to have a second clearance angle. An average width value of the first peripheral flank in the rotating direction is greater than an average width value of the second peripheral flank in the rotating direction.

An end mill, preferably made of solid carbide, with a fastening section and a cutting area, in which the cutting area is formed by a core and three or four cutting edges running helically around the axis of rotation of the end mill and arranged around core; each of which has a peripheral main cutting edge and a secondary cutting edge on a face of the cutting area. On the face of the cutting area at least one point thinning of core is provided between two adjacent cutting edges. In order to create end mills that are simple to manufacture and optimized for drilling, the point thinning has an angle of 30 to 40 relative to the axis of rotation of the end mill.

In a formed end mill, a peripheral cutting edge has a smaller-diameter cutting part and a larger-diameter cutting part. An imaginary line obtained by lining up a deepest point of a flute bottom of a chip discharge flute, which appears in a cross-sectional view perpendicular to an axis of an end mill body, in an extending direction of the chip discharge flute is defined as a virtual flute bottom line. A flute helix angle, which is formed between the virtual flute bottom line and the axis, in a side view when the end mill body is seen from a radial direction orthogonal to the axis, is 0 degrees or more at a distal end part of the chip discharge flute in the axial direction, and increases gradually from the distal end part toward a posterior end in the axial direction.

A cutting tool including an annular cutter body having at least one V-shaped pocket formed therein and a cutting tool cartridge configured to be received in the at least one pocket of the cutter body. The cutting tool cartridge including a main body. The main body includes a cutting head having a cutting chip control portion and a pocket configured to receive a cutting insert.

A milling cutter includes a shank portion and a cutting portion having a cylindrical outer surface. The milling cutter includes a plurality of major cutting edges extending from an end face toward the shank portion, and a plurality of minor cutting edges disposed at the end face of the cutting portion. A relief surface is formed in the cylindrical outer surface proximate a corner of the milling cutter such that the primary cutting edges forms an angle equal to 90 with respect to the end face of the milling cutter. As a result, the milling cutter is capable of cutting a perfect 90 shoulder in a workpiece.

The present invention provides a beveling tool including: a body with a shaft hole formed through the center; a plurality of cutter blades arranged at predetermined distances on the circumferential surface of the body, each having a radial primary blade with a radial primary relief angle ranging from about 10 to about 20 degrees and a radial secondary blade with a radial secondary relief angle ranging from about 25 to about 35 degrees (or about 35 to about 45 degrees); discharge grooves formed longitudinally between the cutter blades to discharge chips produced in beveling; and a shank inserted in the shaft hole of the body, in which the body and the shank are connected by brazing. With the beveling tool of the present invention, it is possible to smoothly discharge chips produced in beveling and to prevent damage to the cutter blades.

An end mill, preferably made of solid carbide, with a fastening section and a cutting area, in which the cutting area is formed by a core and three or four cutting edges running helically around the axis of rotation of the end mill and arranged around core; each of which has a peripheral main cutting edge and a secondary cutting edge on a face of the cutting area. On the face of the cutting area at least one point thinning of core is provided between two adjacent cutting edges. In order to create end mills that are simple to manufacture and optimized for drilling, the point thinning has an angle of 30 to 40 relative to the axis of rotation of the end mill.

A cutting insert includes a first and a second pair of opposing side surfaces. As seen towards a first side surface, a first axial relief face and a first axial abutment face form part of a first surface grouping on a first side of a longitudinal plane. As seen towards a second side surface, a second axial relief face and a second axial abutment face form part of a second surface grouping on the first side of the longitudinal plane. The first axial abutment face forms a substantially flat surface and extends perpendicularly to a median plane of the insert. The second axial abutment face forms a substantially flat surface and extends perpendicularly to the median plane. A second side surface of the first pair of opposing side surfaces has a first and a second radial abutment face.

An example milling bit comprises a shank and a working sector comprising a cutting anterior part, which is a portion of a hollow sphere, a cutting posterior part fixed to the shank and located between the shank and the spherical anterior part, at least one cutting tooth extending along an entire length of the working sector with a cutting edge, and at least one flute to the cutting tooth extending along length of the working sector following the path of the cutting edge. The spherical anterior part of the working sector is hollow and at least one cutting tooth in the anterior cavity region has a shape of a spherical shell element.