Everyone has used a torque wrench, and when it is used, it makes a kata sound to indicate that the torque value you require has been reached.
The "cattower" issued by the torque wrench is generated by the internal torque release structure, which is divided into pressure spring, torque release joint and torque ejector rod. First set the desired torque value on the torque wrench (the spring is placed on the ejector rod to release the pressure on the torque joint), lock the torque wrench, and start tightening the bolts. When the bolt reaches the torque value (when the torque is greater than the pressure of the spring), it will produce an instant disconnection effect. The "katta" sound produced by the metal shell of the wrench is produced at the moment of the disconnection effect.
This is to confirm the reminder effect of reaching the torque value (in fact, it is just like the principle that our arm joints are bent at 15 degrees and will touch the steel pipe after being stretched straight in the iron pipe for a moment).
Torque wrench is also called torque wrench, torque is the product of force and distance, in fastening screw bolts and nuts and other threaded fasteners need to control the applied torque size, to ensure that the thread is tight and not due to excessive torque damage to the thread, so the torque wrench to operate.
First set an upper limit of the required torque value, when the applied torque reaches the set value, the wrench will make a "tower" sound or the wrench joint bends a little Angle, which means that it has been tightened and do not increase the force.
