Device for location defined clamping of machined pieces in the working area of a processing machine

摘要

An instrument for gripping a working piece in one definite position in the operational range of a processing machine, having a gripping chuck (1) clamped in the operational range of a processing machine, a working piece holder (25) placed and clamped on the gripping chuck (1), first position finder means on the gripping chuck (1) and second position finder means on the working piece holder (25), which work together in pairs as adjusting elements and position the working piece holder (25) in the direction of three rectangular axis (X, Y, Z) and in relation to that angular position, which is orienting it, a clamping instrument, the force thereof affixes the working piece holder in the gripping chuck (1) in its definite position defined by the position finder means. The first position finder means have a centring pins (27) and the second position finder means have shoulders in form of two-stage recess (30) formed therein with two steps (31a, 31b), and the edges (32a, 32b) of said steps (31a, 31b) protruding opposite each other inside the recess (30) are arranged by a distance, the nominal dimension of said distance is equal to the width of the centring pin (22) by close fit measured between the places, which touch the edges (32a, 32b) at the working piece gripped in the gripping chuck (1).