Design and Research of Test Bench for Loading and Performance Testing of Aerospace Precision Ball Screw

Aiming at the problem of insufficient research on the motion failure caused by the degradation of the grease of the precision ball screw pair under the typical working conditions of high frequency and high load in aerospace, a set of high frequency inertial loading test bench is designed. Loading and performance testing functions are integrated. The mechanical structure of the test bench, the inertia adjustment device and the connecting member of the pendulum rod are designed, which can simulate the loading under aerospace conditions. Installing multiple sensors can test the force response characteristics, vibration characteristics, temperature rise characteristics and transmission efficiency of the precision ball screw pair when it operates under different frequencies and different axial forces. The axial force of the nut with different rotational speeds under inertial load is tested by experiments.