Rolling mechanism is a key component in the rolling bearing. Accurate manufacturing and processing of rolling bodies can ensure high precision, high performance and long life of rolling bearings. The specific process of making rolling bodies includes the following steps:
1. Cold forging: Cold forging is the first and most important step in the rolling body processing. The workpiece is hardened before being cut, and then cold forged into an approximate shape with a drop hammer or a hydraulic press, forming a semi-finished product with a certain shape and size.
2. Heat treatment: The semi-finished product produced by cold forging needs to undergo heat treatment to change its inner and surface structure to obtain better mechanical properties and stress relieving. Common heat treatments are carburizing and quenching.
3. Grinding: The surface and shape of cold forging deformation parts are adjusted by grinding, and the shape, size and surface roughness are obtained with high precision. Common grinding processes are external cylindrical grinding, internal cylindrical grinding and surface grinding.
4. Super finishing: The surface of the workpiece can be further processed by super finishing to improve its appearance, reduce abrasion and increase fatigue strength. Common processes include lapping, grinding and honing.
5.Assembly and inspection: After the completion of all rolling body working processes, the assembly process will follow. The rolling body is assembled with other components into a complete bearing. After assembly, 100% inspection of the workpiece in terms of shape, size, surface accuracy and noise is required, and then packing and shipping.
In summary, the above is the process of making a rolling body for a rolling bearing. Accurate processing and assembly can ensure a longer service life of rolling bearings.
