Device and method for milling of materials

A device for milling of materials comprising a milling cutter body having a first end portion and an opposite second end portion, the milling cutter body at the first end portion being connectable to a rotatable spindle or holder and at the second end portion being provided with at least one cutting edge or mounting member for mounting of at least one milling insert having at least one cutting edge, the milling cutter body defining a longitudinal axis, which extends through the first and second end portions, and being provided with an axial recess and at least one mass element arranged in the recess,

• wherein the mass element is axially tunable in relation to the milling cutter body by means of tuning members included in the device for the tuning of the axial position of the mass element in relation to the milling cutter body and thereby tuning of the natural frequency of the device,
• wherein the mass element is axially locked in relation to the milling cutter body in a tuned position by means of lock members included in the device for axial locking of the mass element so that there is no axial displacement in relation to the milling cutter body during the milling operation, in order to optimize the natural frequency of the device for the milling operation in question, and
• wherein the mass element is radially locked in relation to the milling cutter body by means of lock members included in the device for radial locking the mass element so that there is no radial motion in relation to the milling cutter body.