Patent ID: 8667700

Claim:
A method for checking the diameter of a cylindrical part in orbital motion about a geometrical axis in a numerical control grinding machine, by means of a checking apparatus including a Vee-shaped reference device for cooperating with the cylindrical part in orbital motion to be checked, a support device movably carrying the Vee-shaped reference device, and a measuring device movable with the Vee-shaped reference device, the method including the following steps: bringing the Vee-shaped reference device into contact with the cylindrical part to be checked, in an automatic way starting from a rest position and so defining a checking condition of the apparatus, and, in said checking condition, causing displacements of said support device by gravity, and maintaining said Vee-shaped reference device in contact with the cylindrical part in orbital motion by virtue of said displacements of said support caused by gravity, and by the thrust applied by the cylindrical part in orbital motion to the Vee-shaped reference device in opposition to the force of gravity.