The hollow rotating platform integrates high work efficiency, high precision, high rigidity and high cost performance. It can be used with AC servo motor or stepper motor for arbitrary angle segmentation, which can not only meet the digital control that cannot be achieved by cam splitter, but also the positioning accuracy is comparable to that of DD motor. It can greatly reduce costs.

The difference between DD motor and hollow rotating platform Accuracy of DD motor: From the perspective of accuracy, DD motor has an advantage Compared with hollow rotating platform, DD motor is equipped with a high-resolution encoder, so its accuracy can reach a higher level of accuracy than ordinary servo. Accuracy of the hollow rotating platform: After the assembly of the hollow rotating platform is completed, the cross roller bearing of the platform is used as the rotation center, and the outer diameter and end face of the turntable are ground again (the standard grade is fine turning) to ensure the coaxiality and parallelism of the turntable and the same position tolerance. Moreover, the hollow rotating platform controls the side clearance by changing the center distance between the two gears, so that the rotation clearance of the hollow rotating platform is extremely small, and the repeated positioning accuracy is less than 5 arc seconds. Characteristics of DD motor: DD motor and torque motor have the characteristics of low speed, large torque, strong overload capacity, fast response, good linearity, and small torque fluctuation. It can directly drive the load without the need for a speed gear, improving the operating accuracy of the system. DD motor torque motors have three different structural forms: average air gap, middle air gap and air gap to achieve different performance. The small gap meets the general low precision requirements, and the air gap mechanism uses the increase of the air gap to eliminate the cogging effect, and in order to reduce the torque fluctuation, the nonlinear change of magnetic resistance. The armature inductance is small, the armature is small, and the manufacturing cost is high. The performance of the air gap structure motor is higher than that of the air gap mechanism motor, which is lower than that of the air gap structure motor. It is the largest in size and costs to manufacture air-gapped motors. There are many advantages and a wide range of applications. Characteristics of hollow rotating platform: The output plate of the hollow rotating platform is a through hole in the middle, and the motor is connected on the side, which is convenient for pipe routing. It can be directly connected to the load, and the hollow rotating platform is the same as the splitter and DD motor, and the heavy load can be moved directly on the platform. The motor is installed arbitrarily, and the hollow rotating platform flexibly changes the size of the motor interface by customizing the input flange and input shaft hole, which is suitable for connecting servo motors and stepper motors of any brand.