Sprocket is a kind of wheel with cogged chain teeth, which is used to mesh with blocks with accurate pitch on the link or cable. Sprocket is widely used in chemical, textile machinery, escalators, wood processing, three-dimensional parking garage, agricultural machinery, food processing, instrumentation, petroleum and other industries mechanical transmission.

The tooth shape of sprinket

The sprocket tooth shape must ensure that the chain can enter and exit the meshing smoothly and smoothly, minimize the impact and contact stress of the chain link when meshing, and be easy to process. See Fig. 1 for the tooth shape of the commonly used sprocket end face. It is composed of three arc sections AA, AB, CD and a straight line BC, which is called three arc straight tooth profile for short. The tooth profile is machined with standard cutters. It is not necessary to draw the end face tooth profile on the working drawing of the sprocket. It is only necessary to mark "the tooth profile is manufactured according to the regulations" on the drawing. However, the shaft tooth profile of the sprocket should be drawn. Refer to the relevant design manual for its dimensions.

Sprinket structure

There are four kinds of commonly used sprinket structures. Small diameter sprockets are generally made into a whole type, while medium diameter sprockets are mostly made into spokes. In order to facilitate handling, loading and weight reduction, holes are made in spokes, and large diameter sprockets can be made into a combined type. At this time, ring gear and wheel core can be made of different materials. For example, C45, stainless steel and other materials.

Sprinket materials

The strength and wear resistance of the sprocket teeth should be ensured, so the surface of the sprocket teeth is generally heat treated to achieve a certain hardness.