Patent ID: 6920698
Filing Date: 2005-07-26
Classification: B24B,G01B,G01D

Abstract:
1. A head for the linear dimension checking of a mechanical piece including a support structure with a casing that defines a recess and a longitudinal geometric axis, an arm-set movable with respect to the support structure with an arm, at least partially housed in the recess, and a feeler, coupled to the arm, for touching a surface of the mechanical piece to be checked, a fulcrum, located between said arm and said support structure, for enabling displacements of said arm with respect to said support structure about a transversal axis, thrust devices located between the arm and the support structure for urging the feeler towards said surface of the piece to be checked, and a transducer, coupled to said arm and said support structure, for providing signals depending on the position of said arm with respect to said support structure, wherein said casing includes a through seat communicating with the exterior of the casing and with said recess and said thrust devices include a spring, housed in said recess of the casing, and hooking and adjustment devices for coupling in an adjustable way said spring to the arm and the support structure, the hooking and adjustment devices including a hooking element and a screw, reciprocally coupled and housed in said through seat, the screw sealingly closing said through seat and being operable from the exterior of the casing without entering said recess.