APPARATUS FOR THE DIMENSIONAL AND/OR GEOMETRICAL CHECKING OF MECHANICAL PIECES WITH ROTATIONAL SYMMETRY

摘要

An apparatus for the dimensional and/or geometrical checking of mechanical pieces (11) with rotational symmetry comprises a support structure (1, 3) with support and reference elements (13, 16, 25, 31, 33), for supporting and positioning the piece, that define a longitudinal reference axis, and gauging heads (73, 77). In order to check the piece while it is rotating, there is provided a transmission system including an axially rotary support (45) whereto there are coupled, by means of hinges (44), two arms (41) carrying jaws (43) for clamping the piece. A pulley (49), fixed to the support structure and driven into rotation by a motor (53), transmits the axial rotation to the support carrying the arms by means of a coupling including an Oldham joint (47).