Crankshaft milling cutter

A crankshaft milling cutter having a disk-shaped main body which is rotatable about an axis perpendicular to the plane of the disk and at the periphery of which there are provided recesses for receiving indexable cutting inserts for removing an allowance on a crankshaft blank,

• wherein at least some of the recesses are open both in the radial direction and also in at least one axial direction of the main body,
• wherein a first group of said recesses which are open in the radial direction and also in at least one axial direction is provided for receiving cutting inserts which are adapted to remove the allowance at an oil collar delimiting a shaft journal,
• wherein at least one and less than all of the first group of recesses has devices for adjusting the axial position of the respective indexable cutting insert received therein,
• wherein the crankshaft milling cutter is equipped with indexable cutting inserts of which a first group is of such a configuration and is arranged in the first group of recesses in such a way that the associated active cutting edges of each of said indexable cutting inserts respectively have a main and a secondary cutting edge,
• wherein the main cutting edges which are provided for removing an allowance at an oil collar and for digging a relief groove in the transitional region between the oil collar and the crankshaft journal are formed by a first nose-shaped radial projection which goes from its radially outer end initially axially and then curved in an arc extending inwardly into radially extending secondary cutting edges and projects radially beyond the active cutting edges of a second group of indexable cutting inserts which are provided for removing an allowance on a crankshaft journal,
• wherein the secondary cutting edges which are provided for fine machining of the oil collar and are formed by a second portion of the active cutting edges firstly extend in adjoining relationship with the main cutting edges parallel to the plane of the disk of the main body and then at a radial clearance angle relative to the plane of the disk of the main body, and
• wherein at least one and less than all of the first group of indexable cutting inserts is axially adjustable and the active secondary cutting edges of said part of the first group, which secondary cutting edges are parallel to the plane of the disk except for a radial clearance angle, are so adjustable that they have an axial projection length with respect to the approximately disk-parallel secondary cutting edges of the other indexable cutting inserts of the first group.