Milling bit with spherical ending for CNC milling of industrial clay

A milling bit comprising:

• a shank;
• and
• a working sector extending from the shank to an anterior end of the milling bit, the working sector including:
• a cutting anterior part with an outer surface defined by a reference sphere,
• a cutting posterior part fixed to the shank and located between the shank and the cutting anterior part,
• a cutting tooth including a continuous cutting edge extending the entire length of the working sector, wherein the cutting edge is helicoidal about a central axis of the milling bit and is defined by a helicoidal angle γ between 10° and 45°, and
• a helical flute extending along the length of at least the cutting posterior part of the working sector adjacent to the cutting edge;
• wherein an open anterior cavity is formed by an inner surface of the cutting anterior part such that, in a region of the anterior cavity, the cutting tooth is in the form of a spherical shell element with a wall thickness between 0.3 mm to 5 mm and the cutting tooth includes a wedge angle β between 3° and 40°;
• and
• wherein the cutting posterior part includes a hollow channel defined about the central axis, the hollow channel comprising a cylindrically-shaped space void of material, the hollow channel being in communication with the anterior cavity, and the helical flute extending about the hollow channel and defining the outer diameter of said cylindrically-shaped space void of material.