The role of spring washers and the principle of analysis of industrial solutions

Preventing bolts from loosening is an essential part of all types of joints. There are many ways to prevent bolts from loosening in life, including the use of spring washers to prevent loosening. Spring washers are often called spring washers in the screw industry. So why will it be used so frequently? It has to start from the role of spring washers and the principal.

1. The role of spring washers: The primary role of spring washers is to give the nut a force after tightening the nut and increase the friction between the nut and bolt! That is, to prevent the operation of the equipment vibration caused by the fastening bolt loosening and increase a protective measure.

2. Spring washers of the anti-loosening principle: spring washers of the anti-loosening principle is in the spring washer flattened, the spring washer will produce a sustained elasticity so that the nut and bolt threaded joints continue to maintain friction, resulting in a resisting torque, thereby preventing the nut from loosening. At the same time, the sharp corners of the openings of the spring washers are embedded in the surfaces of the bolts and the connected parts, respectively, thus preventing the bolts from rotating relative to the corresponding parts. However, it has been proven that spring washers can only provide an elastic force of 10 N/m, which is negligible for a bolt-preloading torque of 280 N/m. Secondly, such a small force is insufficient to allow the sharp corners of the spring washer cut-outs to be embedded in the surface of the bolt and the connected part. After folding and dismantling, there is no apparent embedding mark on the surface of the bolt and the corresponding part. Therefore, the anti-loosening effect of the spring washer on the bolt can be ignored.

Attached is the role of spring washers to prevent loosening and the principle of the diagram:

The role of spring washers and the principle of spring washers to prevent loosening is not a suitable method of avoiding loosening, or we should be looking for a more ideal by increasing the friction resistance moment to prevent the loosening of the technique.

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