扭矩扳手又叫力矩扳手（扭力扳手、扭矩可调扳手），是扳手的一种。目前市场上常见的有手动扭力扳手，电动扭力扳手和气动扭力扳手。电动扭力扳手广泛用于对拧紧工艺有严格要求的装配线，使产品各个紧固件扭矩值一致，生产出来的产品质量有保障。
Torque wrench is also called torque wrench (torque wrench, torque adjustable wrench), which is a kind of wrench. At present, manual torque wrench, electric torque wrench and pneumatic torque wrench are common in the market. Electric torque wrench is widely used in assembly lines with strict requirements for tightening process, so that the torque value of each fastener of the product is consistent, and the product quality is guaranteed.
扭矩扳手使用时发出咔嗒声音，是提示已达到你要求的扭矩值了。
The click sound of the torque wrench indicates that the torque value you require has been reached.
扭矩扳手所发出的“咔嗒”是由本身内部的扭矩释放结构产生的，其结构分为压力弹簧、扭矩释放关节、扭矩顶杆三结构所组成。首先在扭矩扳手上设定所需扭矩值（由弹簧套在顶杆上向扭矩释放关节施压），锁定扭矩扳手，开始拧紧螺栓。当螺栓达到扭矩值（当使用扭力大于弹簧的压力）后，会产生瞬间脱节的效应。在产生脱节效应的瞬间发出关节敲击，扳手金属外壳所发出的“咔嗒”声。
The "click" of the torque wrench is generated by its internal torque release structure, which is divided into three structures: pressure spring, torque release joint and torque ejector rod. First, set the required torque value on the torque wrench (press the torque release joint by the spring sleeve on the ejector rod), lock the torque wrench and start tightening the bolts. When the bolt reaches the torque value (when the torque used is greater than the pressure of the spring), it will produce the effect of instantaneous disconnection. At the moment of disjointed effect, the joint knock and the "click" sound made by the metal shell of the wrench.
力矩就是力和距离的乘积，在紧固螺丝螺栓螺母等螺纹紧固件时，需要控制施加的力矩大小，以保证螺纹紧固且不至于因力矩过大破坏螺纹，所以用扭矩扳手来操作。首先设定好一个需要的扭矩值上限，当施加的扭矩达到设定值时，扳手会发出“卡塔”声响或者扳手连接处折弯一点角度，这就代表已经紧固不要再加力了。
Torque is the product of force and distance. When tightening threaded fasteners such as screws, bolts and nuts, it is necessary to control the applied torque to ensure that the threads are tightened and will not damage the threads due to excessive torque, so it is operated with a torque wrench. First, set an upper limit of the required torque value. When the applied torque reaches the set value, the wrench will make a "click" sound or bend a little angle at the wrench connection, which means that it has been tightened and no more force is added.
以上就是电动扭矩扳手
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