Device for checking the position of a spindle in a machine tool
AssigneeJOBS S.p.A.
InventorsBruno Schiavi, Sandro Foletti
Life of this patent
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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.
Claims12
1) a device for checking the position of a spindle in a machine tool presenting a structure serving to support the spindle and means by which the spindle is set in motion along three axes x, y, and z within a predetermined machining zone, comprising
- a plurality of means located externally of the machine and capable of emitting electromagnetic signals;
- means installed on the spindle and capable of receiving electromagnetic signals;
- a master control unit, connected on the output side to the means by which the spindle is set in motion along the axes, incorporating means by which to process and transmit signals indicating the distance between each of the emitting means and the receiving means;
- and
- means able to identify the position of the spindle on the basis of the signals indicating the distances between the emitting and receiving means.
Dependencies are inferred from the claim text.