| 摘要 |
<p>A gauging or measuring head for the linear dimension checking of mechanical pieces, including a casing (1), an arm (49) carrying a feeler (67) for contacting a piece to be checked, a fulcrum (74), coupled to the casing and the arm, for enabling displacements of the arm with respect to the casing, a return spring (95) for keeping feeler in contact with the piece during the checking, a device for retracting the arm and a position transducer providing signals depending on the position of the arm with respect to the casing. The device for retracting the arm includes a bellows (121), arranged between the casing and the arm, coupled to a pneumatic circuit. <IMAGE></p> |
