Structural Design Analysis of Sprocket

SprocketA wheel with cog-type sprockets to engage with precisely pitched blocks on link links or cables.Sprockets are widely used in mechanical transmission in chemical, textile machinery, food processing, instrumentation, petroleum and other industries.

Sprocket structure design:

1. The tooth shape of the sprocket

The sprocket tooth profile must ensure that the chain can enter and exit meshing smoothly and freely, minimize the impact and contact stress of the chain links during meshing, and be easy to process.It is composed of three arcs aa, ab, cd and a straight line bc, referred to as three arcs-straight line tooth profile.The tooth shape is processed with standard tools. It is not necessary to draw the end face tooth shape on the working drawing of the sprocket. It is only necessary to indicate "the tooth shape is manufactured according to 3RGB1244-85" on the drawing, but the shaft surface tooth shape of the sprocket should be drawn. Refer to the relevant design manual for its dimensions.

2. Sprocket structure

Small-diameter sprockets are generally made of integral type, and medium-diameter sprockets are mostly made of spoke-plate type. In order to facilitate handling, clamping and weight reduction, holes are opened on the spoke plate, and large-diameter sprockets can be made of combined type. Rings and wheel cores can be made of different materials.Such as C45, stainless steel and other materials.

3. Sprocket material

The sprocket material should ensure that the gear teeth have sufficient strength and wear resistance, so the sprocket tooth surface is generally heat treated to make it reach a certain hardness.