Industrial robot bearing as one of the key parts of the industrial robot, mainly includes two categories: bearing, used for industrial robot is a constant cross-section thin-walled bearing, another kind is a cross with cylindrical roller bearing.
There are harmonic reducer bearing, linear bearings, joint bearings, etc. , but before two kinds of bearing with the more.
Industrial robot bearing the development of the key technology of the modern industrial robot to lightweight, bearing device in limited space, need small volume, light weight, which is lightweight.
But at the same time, the robot's high load, high rotary precision, high stability, high positioning speed operation, high repeated positioning accuracy, short life, stable performance, the request of form a complete set of bearing robot must have high bearing ability, high precision, high stiffness, low friction torque, short-lived life, high reliable performance.
1, such as cross section thin-walled bearing thin-walled cross section bearing different with the common thin wall bearing, such as cross section thin-walled bearing most of a series of cross section is square, and the size is designed as a fixed value.
In the same series of cross section size is the same, it is not with the inner diameter size increases, so called cross section thin-walled bearing, etc.
Such as cross section thin-walled ball bearings including thin-walled four-point contact ball bearing series, thin-walled angular contact ball bearing series and thin-walled deep groove ball bearing series three series, more than was applied in the industrial robot waist, elbow and wrist request section size small, restricted areas.
In diameter is the same situation, thin-walled cross section such as ball bearings rolling bearing of steel ball more than specification, thus improving the bearing internal force distribution, reduce the elastic deformation of the steel ball in contact with the channel, the progress of bearing load ability.
2, thin-walled cross roller bearings with thin-walled cross with the internal structure of cylindrical roller bearing by roller are arranged 90 ° vertical with each other, with a single bearing can accept the radial force, two-way for the combined action of axial force and overturning moment with distance between roller stick to implement or isolation block, to avoid the mutual friction between roller tilt or roller, effectively avoid the increase of friction torque.
In addition, the structure of the vertical arrangement of thrust roller roller can prevent the lock of phenomenon;
Due to the structure of the bearing inside and outside the circle is divided again at the same time, the gap is adjustable, even by pressure, also can obtain high rotation accuracy.
Cross with roller bearings with its light composite structure, high rotary precision, good rigidity, good properties such as stable friction torque is generally applied to industrial robot waist turning tricks, joint type robot shoulder, arm, such as rotary parts.
