De-coring vibrator or pneumatic hammer for de-coring of foundry castings with integrated sensor

A pneumatic hammer for de-coring of foundry castings;

• the hammer comprising:
• a jacket comprising:
• an inner chamber;
• an inlet circuit for entry of compressed air;
• and
• an outlet circuit for exit of said compressed air;
• a motion mechanism, for generating a vibratory motion under action of said compressed air;
• a punch or beater, connected to said motion mechanism, for coming into contact with a casting to be subjected to de-coring, forming a first end of the hammer;
• a measurement circuit for measuring an oscillation frequency of the motion mechanism;
• said measurement circuit comprises:
• at least one sensor for measuring the oscillation frequency of the motion mechanism;
• a processing circuit, enclosed in a protection casing, for receiving electric signals transmitted by said at least one sensor;
• and
• a communication line for conducting electric signals from and/or to said measurement circuit;
• said jacket comprises a housing formed in an outer surface of the jacket, such that the housing is shaped to incorporate the protection casing of the measurement circuit, and to maintain the protection casing of the measurement circuit within an outer profile of the jacket.