Feeler for workpieces being machined

Abstract

It is provided a feeler ( 1 ) for workpieces ( 40 ) being machined comprising a rocking arm ( 20 ) adapted to feel the workpiece ( 40 ), a first sensor ( 31 ) adapted to measure the position of the rocking arm ( 20 ) and at least one additional sensor ( 32 ) operatively connected to the rocking arm ( 20 ) and adapted to detect external perturbations acting on the feeler ( 1 ).

1 . A feeler for workpieces being machined, comprising a rocking arm adapted to feel said workpiece and a first sensor adapted to measure the position of said rocking arm; and at least one additional sensor operatively connected to said rocking arm and adapted to detect external perturbations acting on said feeler. 
     
     
         2 . The feeler as claimed in the preceding  claim 1 , wherein said additional sensor ( 32 ) is a piezoelectric sensor. 
     
     
         3 . The feeler as claimed in  claim 1 , wherein said additional sensor is a piezoresistive sensor. 
     
     
         4 . The feeler as claimed in  claim 1 , wherein said first sensor is a sensor of the LVDT type. 
     
     
         5 . The feeler as claimed in  claim 1 , wherein said additional sensor is positioned along said rocking arm. 
     
     
         6 . A workpiece measuring device comprising at least one of said feelers according to  claim 1  and a supporting structure to which said feelers are secured. 
     
     
         7 . The measuring device as claimed in the preceding  claim 6 , wherein said additional sensor is positioned between said feelers and said supporting structure. 
     
     
         8 . The measuring device as claimed in  claim 7 , comprising two of said feelers ( 1 ) that are mutually opposite and are adapted to measure a diameter. 
     
     
         9 . A chip-removal machine tool comprising a measuring device as claimed in  claim 7 . 
     
     
         10 . The machine tool as claimed in  claim 9 , consisting of a grinding wheel.