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Brief introduction to the problem of gear tooth surface hardness

Update:21 May 2020
Summary:

The composition of electronic mechanical products is ve […]

The composition of electronic mechanical products is very complicated. There are many parts in them. One of the most common and important parts is gears. I believe everyone must have seen gears, but do you know that gears can be classified according to the hardness of the noodles? Yes, the hardness of the noodles of the gears is also different. Many people may not know this. Let ’s follow Let's take a look at the gear manufacturers.

Brief introduction to the problem of gear tooth surface hardness
Gears can be divided into soft tooth surface and hard tooth surface according to the hardness of tooth surface. The gear load capacity of the soft tooth surface is low, but it is relatively easy to manufacture and has good running characteristics. It is mostly used in general machinery with no strict restrictions on transmission size and weight, and small-scale production.

In the paired gears, the small wheel has a heavy burden. Therefore, in order to make the working life of the small and large gears approximately equal, the hardness of the tooth surface of the small wheel is generally higher than that of the large wheel. Hardened gears have a high load-bearing capacity. After the gears are precisely cut, they are quenched, surface-quenched, or carburized to increase hardness.

Drilling and milling machine copper worm gear

But in the heat treatment, the gear inevitably deforms, so after the heat treatment, grinding, grinding or fine cutting must be carried out to eliminate errors due to deformation and improve the accuracy of the gear.