MECHANO-ELECTRONIC DEVICE FOR AUTOMATIC MEASUREMENT OF PIECES

The invention refers to a mechano-electronic device for the automatic measurement of parts. The device is used for direct interphase dimensional control on a machine tool equipped with digital controls.The device consists of a fixed part on the swivel head support including a DC electronic unit that generates a signal of determined frequency, sent through an inductance coupling to one sensing head located on the swivel head. The signal is rectified in order to be used for the DC supply of an electronic unit in the proximity of serial contacts consisting of balls and rolls connected to a sensing rod. The electronic unit generates a signal with a determined frequency that is different from the supply frequency based upon the neutral position or reached part of the sensor rod. The signal is returned to the fixed part through the same inductance coupling and applied to a signal processing electronic unit. The signal is converted into a logical "zero" or "one" signal and is entered in the programmable automatic unit of the machine-tool digital control.