CONTROL DEVICE OF FASTENING FORCE OF HYDRAULIC TORQUE WRENCH

摘要

PROBLEM TO BE SOLVED: To provide a control device of fastening force of a hydraulic torque wrench capable of preventing damage of an ultrasonic probe, by accurately measuring fastening force of a fastening member by a simple mechanism by using the ultrasonic probe.

SOLUTION: This control device of the fastening force of the hydraulic torque wrench is provided by arranging the ultrasonic probe Se1 in a tip part of a main shaft S for generating impact torque via an impact torque generating device T rotatingly driven by a motor R. A probe Sc made of a rubber-like elastic member is arranged on a tip surface of the ultrasonic probe Se1.

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