Rolling screws are usually considered to be a standard planet design, but there are several variants, including differentials, re -cycle and inverted versions. Each design provides a unique advantage in performance capacity (load capacity, torque and positioning), but the main advantage of inverted roller screw is that it can easily integrate into the actuator and other subclasses.
Recall that the standard roller screw (also known as the planet roller screw) uses a roller with a thread. The end of the roller has teeth to mesh with the gear ring at both ends of the nut. For inverted roller screws, the function of the screw and nut, the function is swapped or inverted. The nut is essentially a tube with a threaded diameter. Its length is not just enough to accommodate the roller and matching gear ring, but the schedule length of the nut. And the silk axis -instead of the length of the thread along its entire length, the length of the thread is just equal to the length of the roller.
For the inverted roller screw, the length of the nut determines the itinerary, and the thread part of the screw is equal to the length of the roller.
Therefore, when the silk bars rotate, it is not the length of the nut and the roller along the length of the screw, and the roller keeps static static on the screw. Instead, rotating the rotating silk bars will cause the length of the roller and the screw along the nut. Alternatively, you can use upside down roller screw to drive the nut and keep the axial static static.
Because the gear ring is usually located at the end of the screw thread part at the end of the nut, it can make the thread diameter into the diameter of the planetary roller screw with a slightly smaller size. Although it may be difficult to process the thread in the relatively long nut subjects, compared with the standard planet's roller screw, the roller screw is started less times, which means that they can use larger threads and provide provided providing provision Higher load capacity than standard design.
