Abstract:

 It doesn't reach any agreement about the research of twist fault and twist deterrent of navel in rotor spinning. On the basis of the motion analysis of both ends yarns of the navel and the model building of twist fault and twist deterrent. Firstly, two concepts about revolution motion and spinning motion of yarn are defined, then it deny the twist deterrent and determine the twist fault. Finally, it adopt the simulation experiment to study the twist fault of the navel by making experiment device, and get the twist transfer curve as the twist fault occurs and the conclusion that twist fault is less likely to appear with the increase of yarn's tension.

Key words: rotor spinning, navel, twist deterrent, twist fault