Tribological Aspect of Dynamic Deviations in Ring-Frame Twisting System due to Dynamic Malalignment of Spindle

The paper presents a fragment of a research project aimed at defining the dynamics and tribology of the real twisting system of a ring spinning frame, i.e. a system with regular and/or random occurrence of faults in its operation. The object of study are the dynamic disturbances and their tribological consequences, which occur in the operation of the twisting system of a worsted spinning ring-frame due to faulty rotation of the spindle caused by play in its bearing. Studied was a twisting system provided with a taper ring (HZ) and T steel traveller. The forces were determined, for a case of three-contact inter-action between the traveller and ring, which act on the traveller and yarn if the spindle axis deviates from the vertical so that its tip traces an ellipse or a circle. It is shown that this faulty operation of the twisting system has a destructive effect on the inter-action of the traveller-ring-yarn (TRY) trio, which aggravates with time and has a deteriorating effect on the performance of the system