Importance

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Abstract

The present invention concerns a Machine (10, 10′) for simultaneous cutting of a plurality of slabs (18) from a block (B) of stone material through a plurality of band saw blades (11), wherein each of said band saw blades (11) is closed in a loop between a respective driving pulley (12) or a shared driving drum and a respective driven pulley (13) or a shared driven drum, said driving pulleys (12) or said shared driving drum rotating around a first axis (A) of rotation, or respective first axes of rotation parallel to each other, and said driven pulleys (13) or said shared driven drum rotating around the same second axis (A′) of rotation, parallel to said first axis (A) of rotation, or respective second axes of rotation parallel to each other and parallel to said first axes of rotation, said axis (A) of rotation of the driving pulleys (12) or of said shared driving drum and said axis of rotation (A′) of the driven pulleys (13) or of said shared driven drum being in turn mounted on a frame (14) movable with respect to said block of stone material, along two directions (x,y) incident to each other, one direction (x) of cutting said block (B) of stone material, said direction (x) of cutting being disposed on a plane (τ) of cutting of said slabs (18), said plane (τ) of cutting being in its turn incident with respect to a direction (y) of relative advancement of said block (B) of stone material with respect to said frame (14), characterised in that the plane (π) to which said direction (x) of cutting and said direction (y) of relative advancement of said block (B) of stone material with respect to said frame (14) belong is horizontal and at least the portion of the path of each of said band saw blades (11) included between respective movable spacers (19) is inclined with respect to the vertical of an angle (β) comprised between 3 and 20° in the direction of cutting.

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First Claim