Tool device for high-speed machine-working

Crosscutting tool for high-speed crosscutting, which crosscutting tool (40) comprises a body (42, 43) having a through-hole (41) and preferably a striking surface (44), characterised in that the body (42, 43) has at least two positively curved edge portions (43A, 43B), having a certain radius (R), and which preferably are symmetrically placed with respect to a dividing plane which coincides with the centre axis (C) of the said hole (41) designed to be used for radial positioning of the crosscutting tool (40) inside a tool housing (20).

Tool device for high-speed crosscutting, comprising a striking unit (10), a tool housing (20), a damper unit (30), a movable crosscutting tool (40) and a fixed crosscutting tool (50), characterised in that the said tool housing (20) comprises a solid base element (21) having a recess (219) designed for the said fixed crosscutting tool (50), the material thickness (Ts) in the direction of impact measured from an upper edge of a supporting surface (218) in the said recess (219) to an upper end surface (210) of said base element being greater than the material thickness (Tt) measured in a portion close to the said upper end surface (210) of the said base element (21) in the transverse direction relative to the direction of impact.