Patent Number: 7,043,333

Title: Device for checking the position of a spindle in a machine tool

Abstract: In a machine tool with a spindle capable of motion along at least three axes x, y, and z, the position of the spindle is checked by a device that operates utilizing electromagnetic signals sent out by four emitters, located externally of the machine tool, and picked up by a receiver mounted directly to the spindle. The signals are fed into a master control unit and processed by circuits in such a way as to produce an output that can be used to verify and if necessary correct the position of the spindle on the three axes X, Y, and Z.

Inventors: Schiavi; Bruno (Piacenza, IT), Foletti; Sandro (Piacenza, IT)

Assignee: JOBS S.p.A.

International Classification: G06F 19/00 (20060101)

Expiration Date: 5/09/02018