Importance

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Abstract

An apparatus (12) for calibrating slabs of agglomerated or natural stone material comprises at least one calibrating unit (15) provided with a calibrating head which is rotatable about a first rotational axis (16) perpendicular to a working surface (18). The calibrating head (14) comprises calibrating roller tools (24) with rotational axes (28) which are radially arranged around the said first axis (16) for working a slab arranged on said working surface and sliding with a relative movement under the head. Each tool (24) is mounted on a spindle unit comprising in combination: a spindle body passed through by a spindle shaft (30) for rotation of the tool (24) about its rotational axis (28); a motor unit (36) with a motor output shaft (42) having its own rotational axis (43), and a kinematic transmission (48) connected between the motor output shaft (42) and spindle shaft (30) for motorized rotation of the tool. The machine is characterized in that the motor unit (36), the kinematic transmission (49) and the spindle body with the spindle shaft (30) carrying the tool are mutually arranged so that the rotational axis (43) of the motor shaft (42) and the rotational axis (28) of the tool are parallel to each other and spaced in a direction along the first rotational axis (16).

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First Claim