Compressed air chuck with measurement function has pair of claw elements attached to tips of piston and guide rods, toothed rods, gear wheel, magnetic scale and sensor unit for reading scale

摘要

The chuck has a housing with a pair of cylindrical openings and a pair of guide openings extending parallel to each other, pistons in the cylindrical openings moved synchronously in opposite directions by compressed air, a pair of piston rods (6a, 6b) integrally connected to the pistons and with tips protruding from the housing ends in opposite directions, guide rods (13a, 13b) in the guide openings, toothed rods (15), a gear wheel (16) between the guide rods and engaged with the toothed rods, a pair of claw elements (7a, 7b) attached to the tips of the piston and guide rods, a magnetic scale (18) and a sensor unit (20) for reading the scale.