Today, Pingu Hardware Xiaobian provides a simple introduction to the principle of locknuts!
Locknuts can be applied in many fields because of its unique structure. At the bottom of the female thread, there is a 30-degree wedge-shaped bevel, and when the bolts and nuts are tightened with each other, the cusp of the bolt tightly abuts against the wedge-shaped bevel of the thread, thereby generating a great locking force. Due to the change of the angle of the conical shape, the normal force generated by the contact between the threads is made at an angle of 60 degrees with the axis of the bolt, instead of the 30 degree angle of the normal thread. Obviously, the normal pressure of the thread is far greater than the fastening pressure. Therefore, the friction resistance generated by the thread must be greatly increased.
At the same time, when the male thread crest is engaged with the female thread, the tip of the crest is easily deformed, so that the load is evenly distributed over the entire length of the contacted helix, avoiding more than 80% of the total load concentration when the standard thread is engaged. Acts on the threads of the first and second teeth.
Therefore, the threaded coupling pair not only overcomes the disadvantage that the common sta