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design principles of Industrial robot bearing

In general, the determination of the general bearing structure type and main parameters is based on the rated dynamic load as an objective function, and is obtained through optimization under the condition of a set constraint. During the use of thin-walled bearings, not only must have a large rated dynamic load to ensure that the bearing has sufficient carrying capacity, but also has a strong stiffness and a small friction torque to ensure the positioning accuracy of the robot host, flexible operation. Therefore, in the process of bearing design analysis, the three targets of rated dynamic load, stiffness and friction torque should be used as objective functions for multi-objective optimization design. At the same time, the different effects of these parameter changes on bearing performance should be emphatically considered.


Flexible bearings are special thin-walled ball bearings. Some designs can refer to the design methods of thin-walled ball bearings, such as the main parameters of steel ball diameter, groove curvature coefficient, groove diameter selection and calculation, material selection, heat treatment and car, grinding process. However, due to its special use requirements, its main parameters such as the number of steel balls, ball group pitch diameter, rim diameter, fill ball angle. The cage ball pocket diameter and shape, clearance selection and calculation formula need to be changed accordingly .

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