Talk about the technical operation of torque wrench

On Wednesday, October 11, 2017 with the progress of science and technology, the rapid development of industry, the use of torque wrench is becoming more and more popular, the use of torque wrench is more accurate, such as the traditional torque wrench into a ratchet wheel torque wrench, torque wrench, digital display type preset torque wrench and so on, although categories will be different, but they are roughly the same principle.

The following three steps to explain:

1, the first on the wrench set the required torque value (from the spring set on the plunger to the torque pressure release joints), locking torque wrench to tighten bolts, when the bolt after reaching distance value (when using torque is greater than the spring pressure) will produce instant disconnect effect. At the moment have a disconnect effect issued a joint percussion wrench the "tower" sound emitted by the metal shell. In order to confirm the reminder of the torque value. (it's like the way our arms bend at 15 degrees when we put them in an iron tube and straight up in an instant.)

The "torque wrench" is generated by the internal torque release structure, which is composed of three structures: pressure spring, torque release joint and torque push rod.

Understanding of the above principles, the following talk about the technical operation of torque wrench, wrench is used in this way:

1, the use of torque wrench, when you hear a "crack", this is the most appropriate.

2, in the use of torque wrench, first of all, according to the requirements of the measuring part to choose a moderate range, the measured torque value should not be less than 20% of the torque in the use of the medium range, too large range is not suitable for the reinforcement of small torque parts, small range of torque can not be used over the range.

3. When using a torque wrench, first connect the stressed pawl to the auxiliary accessories (such as the sleeve and all kinds of notches) to ensure that the connection is ok.