Bearing is the strategic material of the national economy, is the key to equipment manufacturing. China's bearing industry continued rapid development, has become the world's third largest bearing vendors. However, due to the development of the way, industrial structure, independent innovation and brand building and other aspects of the contradictions and problems, China's bearing industry and the world's leading bearing countries have not yet reached the same level.
China's bearing industry ranked fourth in the world, following Japan, the United States and Germany. But compared with the world bearing industry, China's bearing industry there is a big gap.
Industrial robotic bearings are mainly used for industrial robotic bearings and are one of the key components of industrial robots. Mainly include two categories: one is thin section bearings, the other is cross cylindrical roller bearings. Also, there are harmonic reducer bearings, linear bearings, joint bearings, but mainly the first two bearings.
First of all, pay attention to the type of robot connector, and then decide which kind of bearings to use. For example, the waist bearing rotation accuracy and stiffness requirements are high; the end of the robot, such as elbow and wrist, compact, light weight, suitable for harsh environments. Like most robots, robot bearings must be designed with load capacity, speed capability, service life, such as rotational precision and geometry, such as mechanical properties, environmental requirements, and so on. For example, the radius of curvature of the inner and outer ring troughs directly affects the carrying capacity, load capacity, service life, stiffness and friction torque.
Thin section bearings have seven open series and five sealed series. There are three types of open series: radial contact type, angular contact type and four point contact type. There are two types of seal series: radial contact type and four point contact type.
Thin section bearings can save space, reduce weight, significantly reduce friction, provide good rotation accuracy, so that the host light, miniaturization.
Cross cylindrical roller bearings are characterized by the fact that the cylindrical rollers in the inner and outer raceways are perpendicular to each other. A bearing can simultaneously bear the radial force, two-way axial force and overturning moment of the common role. Cross roller bearings with large capacity, good rigidity, high precision rotation, easy installation. Cross cylindrical roller bearings Main structure: full type, outer ring separation and inner ring separation. For anti-pollution and oil spill requirements, seals can be installed on both sides of the bearing.