The structure of the roller screw can generally be divided into the internal circulation structure (circular reverse device and oval reverse device) and the external circulation structure (intubation device). These two structures are also more commonly used structures. The performance of these two structures is not essentially different, but the connection size of the internal circulation structure is relatively small, while the external circulation structure is large.
What is the calculation method of roller screw speed?
Features of the roller screw:
1. Small friction loss and high transmission efficiency.
2. High accuracy.
3. The possibility of high -speed feed and micro -advance.
4. High stiffness of axial direction.
5. Do not lock themselves, but have the reversibility of transmission.
According to the requirements of the machine tool transmission, the guidance pH is comprehensively considered and determined by factors such as load size and transmission efficiency. When choosing generally, it is determined according to the requirements of the machine tool. The formula is: PH ≥VMAX/NMAX (10). In the formula: VMAX - fast feed speed of machine tool workbench, mm/min; NMAX -drive motor high speed, R/min.
Rotating speed × screw distance of the screw = movement speed of the screw side
In other words: rotating speed = the movement speed of the screw side ÷ the screw distance of the screw.
The above formulas are targeted at the single thread. If it is a multi -screw, consider the number of screws.
