The selection of screw support seat is mainly from the following aspects: positioning accuracy, high speed of machine tool, temperature rise time and screw specification. The screw support seat is used together with ball screws, so the first factor to choose is to adapt to the ball screws used by ourselves. We mainly determine it through the following points.
1. Determine the screw lead through the motor and the speed requirements, check the nut size to determine the stroke and related screw shaft end data;
2. Determine the average axial force and rotational speed by load and speed distribution (acceleration and deceleration);
3. Determine the pre-pressure, life expectancy and axial load through the average axial force; Speed determines dynamic rated load, basic dynamic rated load, lead and critical speed;
4. The DMN value limit determines the outer diameter of the screw and nut form, outer diameter, nut, preloading, load determines the rigidity and ambient temperature, the total length of the nut determines the thermal change and cumulative lead, the screw rigidity, the thermal displacement determines the pre-tension force, the high speed of the machine tool, the temperature rise time, and the screw specification determines the motor driving torque and specifications.
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