The hollow rotating platform is a revolutionary product used in a variety of rotating motion applications. It can replace DD MOTOR and cam divider. It combines high work efficiency, high precision, high rigidity, and cost-reduced. It is a revolutionary product in the rotary motion mechanism. A balance is achieved between the two, repeat positioning accuracy ≦ 5 seconds, the motor is easily configured, and the load is stable. It can be used with an AC servo motor or stepping motor for any angle division, which can meet the digital control that the divider cannot achieve, and the positioning accuracy is the same as the DD motor. It can greatly reduce costs and bring you unexpected results.
Features of the hollow rotating platform:
1. Hollow structure
The turntable of the hollow rotating platform is a hollow structure, and the servo motor is connected to the side, which is convenient for the installation of the gas pipe and the wire in the jig.
2. High repeat positioning accuracy
The hollow rotating platform adopts a single-stage helical gear deceleration method to increase the output torque. The gear accuracy level is below grade 5. In addition, the flexible adjustment mechanism can control the backlash by changing the center distance of the two gears, so that the hollow rotating platform is empty. The return is extremely small, and the repeat positioning accuracy is below 5 arc seconds.
3. High rigidity
The turntable of the hollow rotating platform is supported by a set of precision cross roller bearings. The rollers in the bearing are staggered by 90 degrees, and the roller diameter is slightly larger than the raceway size between the inner ring and the outer ring of the bearing. There is a pre-tightening force between the inner and outer rings and the rollers. The servo rotating platform turntable supported by the bearing can withstand various moments such as radial, axial and overturning, and its rigidity is more than 10 times that of traditional bearings.
4. High rotation accuracy
After the servo rotating platform is assembled, take the cross roller bearing of the platform as the center of rotation, and again grind the outer diameter and the end face of the turntable (standard grade is fine turning) to ensure the concentricity and parallelism of the turntable.
5. Arbitrary configuration of the motor
The hollow rotating platform can flexibly change the size of the interface by customizing the flange and the input shaft hole, which is suitable for connecting any brand of the servo motor and stepper motor.
The hollow rotating platform is mainly used in numerical control indexing devices, manipulator joints, the fourth processing axis of machine tools, military radars, automated production lines, and other rotary motion occasions that require high precision and compact structure.
Regardless of whether it is used as a fourth-axis processing turntable for CNC machine tools, whether it is used in a manipulator joint, or as a part of a manufacturing unit, the hollow rotating platform directly affects or even determines the accuracy and overall performance of its related products. The fundamental factor that determines the performance of the hollow rotating platform lies in the structure and accuracy of its supporting bearing type. Regardless of the form of the hollow rotating platform, its slewing support requires high axial and radial positioning accuracy.
Crossed roller bearing, with high rotation accuracy, large bearing capacity, small size, high rotation speed, and high rigidity.
In terms of structure, the structure of the crossed roller bearing is much simpler than that of the traditional bearing. With a single row of cross-arranged cylindrical rolling elements, considerable axial and radial bearing capacity and overturning moment can be obtained. The structure is relatively simple. Traditional bearings must be arranged in sequence through multiple sets of bearings to achieve the same effect, which brings great convenience in terms of design, assembly, and installation. Compared with traditional bearings, the space occupied by the equipment is much smaller, and the assembly difficulty is greatly reduced.
In terms of installation, the customized cross-roller bearing is more convenient to install, the mechanism design tends to be simplified, and the mounting hole design is added, which is easier to install and use, which greatly simplifies the structure of the rotating platform.
In terms of maintenance, the outer ring of the crossed roller bearing is designed with lubricating holes and grooves, which is convenient for lubrication. The lithium-based extreme pressure grease is adopted, and the grease does not need to be replaced frequently. It is a series of guarantees for the accuracy, stability, and service life of the bearing.
In summary, customized cross-roller bearings have no doubt to become the ideal choice for rotating support bearings for hollow rotating platforms.
Tedin produces standard series crossed roller bearings and custom crossed roller bearings. You are welcome to contact us for details.