Robot bearings are devices used to support and rotate robot joints. Its main principle is to use friction and rolling to achieve mechanical motion. Here are some common types of robot bearings and their working principles:
1. Rolling bearings (ball bearings and roller bearings): Rolling bearings use rolling elements (usually steel balls or rollers) to roll between the inner and outer rails to reduce friction and improve rotational efficiency. Ball bearings are suitable for smaller axial and radial loads, while roller bearings are suitable for larger axial loads.
2. Sliding bearings (liquid and solid lubricated bearings): Sliding bearings reduce friction through lubricating films (such as liquid or solid lubricants). Liquid bearings use liquid lubricants to fill the bearing gaps, forming a lubricating film to support and reduce friction. Solid lubricated bearings use solid lubricants (such as coatings or oils) to provide lubrication function.
3. Magnetic levitation bearings: Magnetic levitation bearings support and suspend robot joints through electromagnetic force. It utilizes the electromagnetic force generated by the magnetic field to counteract gravity and other loads, thereby achieving contactless axial motion.
These bearing types are selected based on the specific needs and application fields of the robot. The selection of bearings needs to consider factors such as load size, speed requirements, accuracy requirements, friction losses, etc. to ensure the stability and performance of the robot.
