There are two main ways to connect the direct drive servo motor to the load: one is a framed motor structure with a hollow shaft, the load shaft is directly inserted into the hollow shaft of the motor, or the motor is a solid shaft structure, and the load shaft and the motor shaft are connected by Shaft connection; Servo Motor the other is a frameless (packed) motor structure, the stator is installed on the load frame, and the rotor is directly installed on the load shaft, so that the motor rotor becomes part of the load, which can provide users with very compact machinery Design solutions.
Modular framed direct drive servo motor is a new type of installation structure developed in recent years. It combines the space saving and performance advantages of frameless motor technology with the convenient installation of framed motor.
There is no bearing in the motor, Servo Motor and the bearing of the load shaft is used to support the rotor of the servo motor, similar to the frameless motor; the stator frame is connected to the load through the flange and the stop, similar to the frame motor. The rotor and the load are tightly connected to the load shaft through a novel compression connection structure, so that the motor rotor and the load are integrated, eliminating the gap and flexibility between the motor and the load, the connection rigidity is greatly improved, and no longer needed Like traditional motors,Servo Motor inertia matching is required, usually allowing an inertia mismatch of 250: l, up to 800: 1, so that the system can obtain higher gain without oscillation, and the system bandwidth is greatly improved.
Because there are no precision bearings in the motor, the cost is reduced, and it has a higher cost performance than the framed motor; compared with the frameless motor, Servo Motor there is no need to consider the structural design of the motor, simplifying the mechanical design and installation; the servo motor can be installed in any direction, It can be installed horizontally or vertically, but the user needs to select the corresponding rotor load bearing.