| 摘要 |
<p>Shearing or mitre sawing assembly (10) for cropping machines (11) suitable to shear elements made of wood, plastic, metal, alloys or otherwise, shaped as rods (13) or sheet and placed on a work plane (11a), the shearing assembly comprising at least a movable trolley (14) supporting at least a rotary sawblade (12) constrained to a supporting structure (15) of the cropping machine (11) by means of appropriate guide means (16), the movable trolley (14) moving alternately from an inactive position, wherein the blade does not come into contact with the work plane (11a), to a working position wherein the blade (12) comes into contact with the work plane (11a) to carry out the shearing operation, the movable trolley (14) cooperating with movement means comprising at least a main actuator (18), the movement means being suitable to generate on the movable trolley (14), during its outward travel from the inactive position to the working position and/or during its return travel, a torque component which modifies the trajectory of the blade (12) with respect to the work plane (11a) between the outward travel and the return travel, at least one component of either the supporting structure (15) or the guide means (16) having characteristics of at least partial elastic flexibility so as to allow the movable trolley (14) to oscillate when it is stressed by the torque component. <IMAGE></p> |
