The working principle of the Torque Wrench is that after the motor is decelerated by the planetary gear mechanism, the power is transmitted to the impact head, and the two convex heads of the impact head are driven by the trigger shaft to rotate the shaft, and the power output is completed by the trigger shaft. Then, after using the torque Wrench for a period of time, the output power will inevitably drop. As the use time of the wrench increases, the output power will continue to drop until it fails to work. Through the disintegration observation of the electric torque wrench, the technician found that all the used torque wrenches had severe wear and tear on the shaft working face without exception. The worn working face is a bevel that is at an angle of about 45 degrees to the original working face, which will disperse the impact force acting on the trigger shaft during operation. After the impact force is dispersed, the force applied to the internal components of the torque wrench also changes. From the above observations, we have found out the main cause of the failure of the electric wrench - the severe wear of the shaft working face. Therefore, in order to effectively extend the service life of the electric wrench, it is necessary to solve the wear problem. And because the shaft wear is more serious than the impact head, the problem of the shaft wear is the key. If this problem is solved, the impact head wear problem will be solved. The integral shaft is changed to a split type, and the working surface of the shaft can be disassembled, and after a period of use, it can be replaced according to the wear condition. The movable working surface can be individually selected with suitable materials to achieve high mechanical properties through a reasonable processing process. Therefore, high carbon steel is used for the heat treatment process of medium temperature tempering after quenching. The thus processed movable working surface has both high hardness and toughness so that it does not break when subjected to impact. And it can be processed in large quantities, and it can meet the requirements of long-term replacement with one processing, which is very convenient. The problem of the failure of the electric wrench is solved. Concerned about surprises Label: What should I do if the electric wrench suddenly fails? Previous: Daily maintenance of riveting machine Next: Design of flywheel inertia of Diesel Generator Wood Axe,Chopping Axe,Axe Tool,Froe Axe Ebic Tools Limited , http://www.ebictools.com