Patent ID: 6430832
Filing Date: 2002-08-13
Classification: B24B,G01B

Abstract:
Apparatus for checking the diameter of a cylindrical part, rotating about a geometrical axis, in the course of the machining in a numerical control grinding machine including a grinding-wheel slide, witha reference device for cooperating with the part to be checked, a measuring device movable with the reference device, a support device for supporting the reference device and the measuring device, the support device having a support element adapted to be fixed to the grinding-wheel slide, a first coupling element coupled to the support element so as to rotate about a first axis of rotation, and a second coupling element carrying the reference device and coupled to the first coupling element so as to rotate with respect to it about a second axis of rotation parallel to said first axis of rotation, a control device for controlling automatic displacements of the apparatus from a rest position to a checking condition, in the course of such displacements the reference device performing closing movements with respect to the support element, and a guiding mechanism associated with the reference device for guiding the arrangement of the latter on the cylindrical part towards the checking condition of the apparatus, the guiding mechanism including a limiting device with at least a pair of abutting surfaces adapted to engage with each other and limit the closing movements of the reference device during said automatic displacements towards the checking condition, and to disengage from each other further to said arrangement of the reference device on the cylindrical part to be checked.