Analysis of shogging motion vibration of guide bars on warp knitting machines

In the light of the fact that the control system malfunction will occur because of the damage by friction between needles or yarns resulting from the mechanical vibration of shogging motion of guide bars when the knitting machine is running at a high speed.This paper proposed to conduct a dynamic analysis of the guide bars using the modal analysis technology.Based on the built acoustic vibration test platform,the key dynamic parameters of the guide bar are tested,including damping ratio,natural frequencies,and natural vibration mode,so as to get the amplitude features reflecting the frequency response of vibration of the guide bars.And then,the paper puts forward the effective measures of anti-vibration for warp knitting guide bars,and the contrast test results show that the measures are valid,and the vibration analysis method is feasible.