How to Produce Timing Belt Pulleys

To produce high-quality timing belt pulleys, the following steps should be followed:

Material Selection:

To ensure the production of excellent timing belt pulleys, it is crucial to start with high-quality materials.

For aluminum alloy, such as 6061 aluminum alloy, it is important to choose materials from reputable factories that meet European environmental certification standards and comply with national and ISO standards.

Using high-quality materials guarantees the longevity and quality of timing belt pulleys.

Processing Techniques:

• Turning: After material selection, the raw material undergoes lathe turning to achieve the required dimensions according to the corresponding drawings. A certain allowance for the outer diameter should be retained since timing belt pulleys are manufactured using the cut-top method. CNC turning is employed for operations such as turning and milling to produce the outer diameter, inner bore, step dimensions, and thread machining.

• CNC gear hobbing machines: After the turning process, the material is subjected to CNC gear hobbing machines to form the teeth of the timing belt pulleys. This process ensures the accuracy and consistency of the tooth profile, which is crucial for the stable operation and transmission efficiency of the timing belts. CNC gear hobbing machines are used to achieve precise tooth profiles.

• Deburring: After the tooth profile cutting, there may be some metal burrs on the bottom surface of the timing belt pulleys. Machine deburring is performed to ensure a smooth surface, reducing friction and wear.

• Collar Assembly: Finally, the collars are assembled onto the timing belt pulleys. Collars are typically made of metal materials such as aluminum alloy or galvanized steel. The assembly process ensures precise fitting and reliable fixation of the collars to the pulleys.

Machinery and Equipment for Producing Timing Belt Pulleys:

• Material cutting saws

• CNC lathes

• CNC gear hobbing machines

• Deburring machines

• Collar assembly machines

Surface Treatment in Timing Belt Pulley Production:
Timing belt pulleys often undergo special surface treatments to enhance surface hardness and corrosion resistance. Common treatments include:

• Aluminum Alloy Anodizing: Anodizing is performed on aluminum alloy pulleys to form a dense and uniform oxide layer on the surface. This process enhances hardness and wear resistance while providing corrosion protection.

• Steel Blackening: Blackening treatment is commonly used on steel pulleys. It involves subjecting the steel surface to specific chemical solutions or heat treatment in controlled atmospheres to form a black oxide or sulfide layer, enhancing the appearance and providing corrosion resistance.

By following these steps and utilizing the appropriate equipment, high-quality timing belt pulleys can be efficiently produced.