Research on Axial Stiffness of the Double-nut Ball Screw Mechanism

摘要

Contact stress analysis on the high-speed double-nut ball screw has been done, contact deformation has been derived, and we got the formulas of axial stiffness of ball screws, and then we got some main factors which could influence the axial stiffness of ball screws, such as preload, helix angle, contact angle, etc. Then we got the influence on ball screws caused by these factors and the corresponding related curves, which can provide theoretical support for the reasonable design on new high-speed ball screws.