How Torque Wrench Works

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Torque wrench work principle: torque wrenches, also known as torque wrenches, torque wrenches, torque adjustable wrenches, is a kind of wrench, generally divided into three categories: manual torque wrenches, pneumatic torque wrenches and electric torque wrenches. Fixed torsion wrenches are widely used in assembly lines that require stringent tightening procedures. The torque values ​​of various fasteners are consistent and the quality of products produced is guaranteed.
The principle of issuing a Kata sound with a torque wrench (torque wrench) is simple and can be divided into the following steps to understand:
1. After the "Kata" sound is issued by the torque wrench, it indicates that the torque value you have reached has been reached;
2. The “Kata” issued by the torque wrench is generated by its own internal torque release structure. Its structure is divided into three structures: a pressure spring, a torque release joint and a torque jack.
3. First, set the required torque value on the torque wrench (pressed by the spring sleeve on the top rod to the torque release joint), lock the torque wrench, and start tightening the bolt. When the bolt reaches the torque value (when the torque is greater than the spring pressure), there will be a momentary disconnection effect. At the moment when a disjoint effect occurs, a joint strike is made and the “Kata” sound from the metal casing of the wrench is emitted. From this, we can confirm the reminding effect of reaching the torque value (actually the same principle as when we put the 15 degree bend of the arm joint into the iron pipe and then immediately hit the steel pipe).
The above is the most commonly used manual torque wrench, in addition to electric torque wrenches, pneumatic torque wrenches and so on. At this stage, it is divided into mechanical sound alarm type, digital display type, pointer type (dial type), sliding type (self-sliding type). Among them, mechanical sound alarm type adopts the principle of lever, when the torque reaches the set torque, it will appear Torque wrench "mechanical touch sound, then the wrench will become a dead angle, and the equivalent of wrenches, if you use force, there will be excessive force phenomenon.
The digital display is analogous to the pointer (dial type), which is to visualize the applied torque. The digital display and pointer at this stage are based on the mechanical sound alarm type torque wrench.
The sliding type (self-slipping type) adopts overload protection and automatic force release mode. When the torque reaches the set torque, it will automatically release the force (at the same time, the sound of mechanical collision will also occur). After that, the wrench automatically resets, and if it is used again, it will Once again, there will be no overpowering phenomenon. This is a new sensational product that has only appeared in the last 1 or 2 years.
The mechanical sound alarm system is a product of the current market, mainly reflected in the cheaper prices, the other three relatively speaking, the price is expensive. However, due to the increasingly higher requirements of all walks of life in this regard, as well as the requirements of efficiency, digital display, pointer The demand for dial (swap) and slip (slip) will increase

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