Our domestic industrial robots started late, lagging behind European and American countries. Now, after decades of development, it has begun to take shape. With its performance and the influence of its international environment, it has become an inevitable trend to vigorously develop the industrial robot industry, and it has become possible to “replace humans with machines”. With the vigorous advocacy of the country, robots have recently been derived AGV (mobile robot), spot welding robot, welding robot, arc welding robot, laser processing robot, vacuum robot, clean robot, etc. The advantages are to ensure product quality, improve work efficiency, automate production lines, and reduce industrial accidents.

The slewing bearing has played a vital role in the development of industrial robots, which is widely called the “joint of the machine”. Industrial robots are widely used in manufacturing workshops, from the slewing bearing to the transmission reducer. In terms of the relationship, there are roughly three common slewing support device structures for modern industrial robots:

The split slewing support structure mainly adopts the cross-roller slewing support to bear the overturning moment, axial force, and radial force of the industrial robot, including dynamic and static working conditions. The transmission reducer only bears the rotating torque of the rotary shaft. Therefore, the cross-roller slewing bearing is required to have high accuracy under this working condition, and to ensure the rotation accuracy of the robot.

One-piece slewing bearing structure, which adopts a main bearing reducer with sufficient load-bearing capacity in structure, and the main bearing of the reducer bears all the overturning moment and axial force of the industrial robot, so that no cross-roller slewing bearing is needed , The main bearing of the reducer provides higher accuracy, but the cost of this reducer is relatively expensive.

The hybrid slewing support structure is characterized by the use of a hollow main bearing reducer with a certain load-bearing capacity and a cross-roller bearing with a certain precision to jointly complete the supporting and slewing functions. The turntable of the industrial robot is fixedly connected with the output shaft panel of the slewing transmission reducer and the inner ring of the cross roller bearing at the same time. The stiffness of the cross roller slewing bearing is much greater than the bending stiffness of the reducer output panel, so under dynamic conditions , The bending moment and the axial moment are mainly carried by the cross-roller slewing bearing.

XZWD Slewing Ring Co., Ltd. produces two series of slewing bearings and slewing drives. The slewing drive can be directly connected to the servo motor to achieve the function of rotation, and the installation is simple and practical. In terms of slewing bearing, a thin and light slewing bearing has been specially developed, which has been widely used in AGV.