Dynamics Characteristic Analysis of Ball Screw Under High Load

Abstract

To research the dynamics characteristic of high load ball screw under angular vibration driving velocity，a flexible body dynamic model and a control model considering the process of ball entering and leaving the re-circulating mechanism are built based on explicit time integration. The comparison of dynamic responses and other characteristics shows that the ball screw under high load has a certain probability of transient stuck originated from the impact between the balls in the groove and the balls in the deflector，this phenomenon stems from the collision between the ball in the raceway and the ball in the reverser，and the common action of the normal force loading and unloading when balls enter and leave the re-circulating mechanism，etc. This research provides a reference for the optimization design aiming at enhancing the dynamic performance of ball screw.

Keywords

• Ball screw