Patent ID: 7690127
Filing Date: 2010-04-06
Classification: B24B,G01B

Abstract:
1. An apparatus for checking diametral dimensions of a crankpin orbitally rotating about a geometrical axis, in the course of the machining of a crankshaft including said crankpin in a numerical control grinding machine including a grinding-wheel slide carrying a grinding-wheel, the apparatus comprising: a Vee-shaped reference device carrying a measuring device and adapted to keep contact with the crankpin to be checked, in a checking condition, substantially owing to the forces of gravity; a support device, fixed to the grinding-wheel slide, for movably supporting the Vee-shaped reference device, the support device comprising at least one rotatable coupling element carrying said Vee-shaped reference device; and a guiding mechanism, with mutually sliding guiding surfaces, adapted for guiding movements of the Vee-shaped reference device from a rest position towards said checking condition and vice-versa.