UNIT FOR MONITORING THE PRESENCE OF CHIPS BETWEEN A TOOL-HOLDER SEAT AND A SPINDLE SUPPORT OF A MACHINE TOOL, ASSOCIATED DETECTION SYSTEM AND ASSOCIATED DETECTION METHOD

摘要

The invention relates to a unit (19) for monitoring the presence of chips between a seat of a tool holder (12) and a support (14) of a spindle (15) of a machine tool, comprising: – means for obtaining an imbalance as a function: – of an amplitude corresponding to a maximum of a first signal (Sα) representing the centrifugal forces applied to said seat and/or said support (14); and – of a phase obtained as a function of a phase-shift between said first signal (Sα) and a second signal (Sp) representative of a position of a drive shaft (16) driving said spindle (15); and – means for detecting the presence of a chip (C1-C6), which means are configured to detect the presence of a chip when the norm of the difference between said imbalance and a reference imbalance is below a threshold value, said reference imbalance being obtained as a function of a reference amplitude and phase.