Abstract: An impact tool includes a housing, a rotating hammer arranged in the housing and rotatable by a motor, and a rotating anvil arranged in the housing and rotatable by the hammer by a series of impacts. An output shaft has a proximal end fixed to the anvil and a distal end protruding from the housing and ending with a fitting element for removable connection with an external mechanical adapter. A sensor unit includes a rotational torque sensor for detecting a torque of the shaft. The torque sensor includes at least one extensometric transducer fixed to an outer surface of a cylindrical portion of the distal end adjacent to the fitting element to detect a deformation signal that is proportional to a deformation of the outer surface when the shaft is rotated and indicative of the torque.

Abstract: A method for carrying out and verifying substitution and/or adjustments of mechanical components in an automatic packaging machine (1) during the size change over, said machine (1) being equipped with a computerized unit (UCC, 2, D) for verifying and storing instructions related to the operations necessary to change over the size of the articles being processed. The operations include substitution of specific mechanical components and/or adjustment of the spatial positioning of specific mechanical components. Information elements relevant to the size change over are stored in the unit (UCC, 2D) and are recalled and transferred to a palm-size computer (3, E).

Abstract: A method for carrying out and verifying substitution and/or adjustments of mechanical components in an automatic packaging machine (1) during the size change over, said machine (1) being equipped with a computerized unit (UCC, 2, D) for verifying and storing instructions related to the operations necessary to change over the size of the articles being processed. The operations include substitution of specific mechanical components and/or adjustment of the spatial positioning of specific mechanical components. Information elements relevant to the size change over are stored in the unit (UCC, 2D) and are recalled and transferred to a palm-size computer (3, E).