A kind of manufacturing method of anti-loose washer and anti-loose washer

Abstract

The invention discloses a lock washer manufacturing method and a lock washer. The manufacturing method comprises the following steps that (1), the lock washer which is made of stainless steel and has a tooth structure is manufactured, wherein the tooth structure is that the included angle between a long edge and a short edge of the cross section of a small tooth is 80-110 degrees, the depth of the small tooth is 0.1-0.3 millimeter, the included angle between the long edge of the cross section of the small tooth and the base plane of the washer is 5-10 degrees, and the included angle A between the long edge of the cross section of a large tooth and the base plane of the lock washer is larger than the lead angle B of a matched bolt or nut by 0.1-1 degree; (2), the surface of the lock washer is processed, and a passivated layer on the surface of the lock washer is removed; (3), the lock washer after processing of the step (2) is subjected to low-temperature carburization, or low-temperature nitridation or low-temperature nitrocarburizing, and a hardened layer is formed on the surface of the lock washer; (4), the finished lock washer is finally manufactured after washing. The lock washer manufactured through the manufacturing method is good in lock effect and low in manufacturing cost.

Description

【Technical field】 [0001] The invention relates to a manufacturing method of an anti-loosening washer and an anti-loosening washer. 【Background technique】 [0002] Such as figure 1 As shown, the anti-loosening washer includes radial small teeth 101 and large teeth 102 respectively arranged on both sides of the washer, and the inclination angle of the tooth surface of the large teeth 102 is greater than the thread lead angle of the bolt or nut used in conjunction. Such as figure 2 shown and image 3 As shown, they are the top views of the surface where the small teeth are located and the surface where the large teeth are located. The gasket is a circular hollow structure. The small teeth and large teeth are respectively distributed on the upper and lower sides of the gasket. The number of teeth is large and the size is small; the number of teeth on the face where the big teeth are located is small and the size is large. [0003] Such as Figure 4 As shown, it is a schema...

AI Technical Summary

Problems solved by technology

[0004] At present, the anti-loosening effect of stainless steel double-stack self-locking lock washers on the market is usually not very good

The washer produced by Nord-Lock Company in Sweden has better anti-loosening effect, but whether it is made of austenitic stainless steel or carbon steel, its manufacturing cost is higher than the cost of anti-loosening washer produced by domestic manufacturers.

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