Marposs Societa' Per Azioni

Samuele Martelli

Roberto Bruni

Matteo Venturi

An apparatus for checking mechanical parts such as tools on machine tools employs optical devices for emitting and receiving a light beam, for example a laser beam, along a checking direction, and sensors for detecting variations in the features of such a light beam. A protection device () for at least one of the optical devices comprises a support element () with an inner seat (), communication conduits () aligned along the checking direction and a shutter () movable, in the internal seat, from a rest position to an operative position of the apparatus. The shutter comprises a transversal through hole () which is arranged along the checking direction in the operative position, aligned with the communication conduits to allow the light beam to pass through. A movable closure element (), for example a small sphere or ball, is arranged in a transversal hollow () of the shutter and is pushed by a spring towards the outside of the transversal hollow. In the rest position of the apparatus, the transversal hollow is arranged along the checking direction and the movable closing element partially protrudes and cooperates with a gasket at the inlet of one of the communication conduits, to prevent the entry of foreign material and fluids into the optical device.

Optoelectronic apparatus for checking mechanical parts, and relevant protection device

Bidirectional measuring head () comprising: a stationary frame (), a feeler (), a kinematic motion assembly () which is supported by the stationary frame and carries the feeler to enable the feeler to move along two measuring directions (D, D) perpendicular to each other, and at least one position sensor () that is mounted on the kinematic motion assembly and detects the position of the feeler along at least one measuring direction. The kinematic motion assembly has four columns, each of which runs perpendicular to the two measuring directions: a first column () is rigidly linked to the support frame, a second column () is adapted to translate along both measuring directions and supports the feeler, a third column () and a fourth column () each performs a displacement almost exclusively along one of the two measuring directions. The kinematic motion assembly may be a deformable mechanism. The kinematic motion assembly further comprises two balancing elements () each of which is hinged to the stationary frame so as to rotate around a rotation axis () perpendicular to the measuring directions and comprises one end which is mechanically constrained to the third column or the fourth column.

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Castello D'Argile, Italy

Samuele Martelli