Apparatus for a multiple checking of internal dimensions

摘要

PCT No. PCT/EP91/00335 Sec. 371 Date Oct. 18, 1991 Sec. 102(e) Date Oct. 18, 1991 PCT Filed Feb. 22, 1991 PCT Pub. No. WO91/14152 PCT Pub. Date Sep. 19, 1991.An apparatus for the automatic and simultaneous checking of holes comprises plug gauge devices (11-16) with gauging heads (70, 71) and elements for coupling to a support. The coupling elements are substantially constituted by parallel shafts (29-32) displacing the gauging heads (70, 71) from a rest position to a measurement position, and vice versa, through rotational displacements automatically controlled by relevant actuation devices (60-65). The angular position of the shafts is detected by transducers (52-55), which are connected to a processing unit (58) also receiving the signals of the gauging heads (70, 71). The plug gauge devices comprise further heads (86-89) coupled to rotatable rods (82, 83) for simultaneously gauging diametral dimensions of a hole (10) communicating with the other holes (4-9) and transversal to them. The apparatus is particularly adapted for checking the holes of a cylinder block of an internal combustion engine.