METHOD FOR CUTTING MINERALS AND CUTTING MACHINE

摘要

The present invention provides a method for cutting minerals utilizing a cutting tool means provided with cutting teeth, said tool means rotating about an axis approximately parallel to the winning face and being moved at a feeding rate essentially in axial direction, said method characterized in that several grooves distant from each other are carved after each other in engaging sequence and that in dependence on the mineral properties the feeding rate is increased with respect to the rotatory velocity when a brittle mineral is to be cut whilst the feeding rate is diminished with a tough mineral.