Sprockets are toothed wheel-shaped mechanical parts that mesh with the chain and are widely used in mechanical transmissions in industries such as chemical engineering, textile machinery, food processing, instrumentation, and petroleum.
The tooth shape of the sprocket must ensure that the chain enters and exits the mesh smoothly and energy-savingly, minimizes the impact and contact stress of the link during meshing, and is easy to process.
Sprocket structure is generally divided into small diameter, medium diameter, large diameter.
Small diameter sprocket is generally made in one piece. The medium-diameter sprocket is mostly made of spoke type, so as to facilitate handling, loading and weight reduction, and to make holes in the spokes. The large-diameter sprocket can be made into a combined type, and the ring gear and the core can be made of different materials! For example C45, stainless steel and other materials.
Sprocket commonly used processing methods: quenching or surface blackening.
Sprocket commonly used material: C45. The sprocket material must ensure that the gear teeth have sufficient strength and wear resistance, so the sprocket tooth surface is generally heat-treated to a certain degree of hardness.
Sprocket application
17 teeth: For small pitch drive sprocket.
19 teeth or more: Generally used for driving sprocket running at medium and high speeds and normal working conditions.
23 teeth or more than 23 teeth: Recommended for shock conditions. When the speed ratio is low, the number of rotations of the i-link, the tensile load of the chain, and the load of the bearing can be greatly reduced with the high-number-of- teeth sprockets.
Sprocket size calculation: know the pitch and number of teeth to find the pitch circle diameter, D = PK = Psin (180 / z), and then calculate the tooth root circle and addendum circle diameter.
How to distinguish the sprocket model: Sprocket model is mainly based on the model with the chain to call, such as 80-16T with a chain of 80, the number of teeth is 16 teeth. If the letter A is a plate sprocket B represents the table sprocket B1-2-3 1 2 3 represents a single row of double row and three row sprocket, the rest is 3 minutes 4 points 5 points 6 points 1 inch.... . Different sprocket tooth thicknesses are different
