| 摘要 |
PROBLEM TO BE SOLVED: To operate fine spinning with the most suitable spinning-out tension and spindle revolution from the start to the end of yarn winding by calculating a spinning-out tension or spindle revolution at plural points during winding up yarn using an equation of motion of a traveler with due consideration of air resistance by ballooning of yarn, and the like, and carrying out fine spinning based on the results of the calculation. SOLUTION: In a ring fine spinning frame, either of spinning-out tensions or spindle revolutions on plural points during yarn winding under set conditions are calculated using three equations consisting of a motion equation regarding a traveler 4 with due consideration of a centrifugal force and air resistance of yarn Y by ballooning, and slide resistance of the traveler 4, a theoretical equation of ballooning and a relational equation between a wind-up tension for winding up yarn to a bobbin 1 and a spinning-out tension, and the fine spinning is operated based on the results of the calculation.
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