Acoustic sensor for monitoring machining processes in machining tools

An acoustic sensor including:

• a stationary unit,
• a rotating unit with support and protection elements with a support,
• a vibration detecting transducer coupled to the support,
• positioning and clamping elements adapted to define and lock the position of the transducer, including mechanical clamping devices rigidly coupling the transducer to the support without using glues, and
• power supply, processing and transmission circuits with at least one contactless coupling adapted for achieving an electric connection between the stationary unit and the rotating unit.

An acoustic sensor including:

• a stationary unit,
• a rotating unit with
• support and protection elements with a support,
• a vibration detecting transducer, adapted to transduce high frequency acoustic signals, coupled to the support, and
• positioning and clamping elements adapted to define and lock position of the transducer against a surface of the support, and
• power supply, processing and transmission circuits with at least one contactless coupling adapted for achieving the electric connection between the stationary unit and the rotating unit,
• wherein said positioning and clamping elements include mechanical clamping devices with a thrust device coupled to the support and protection elements and defining an abutment surface, the thrust device being adapted for achieving a rigid mechanical coupling between the transducer and said surface of the support without causing any substantial deformation of the transducer.