Spinning

Spinning process is run in the ring frame machine
Process

The roving, on bobbins, is placed in the spinning frame, where it passes through several sets of rollers running at successively higher rates of speed and is finally drawn out to yarn of the size desired. Spinning machines are of two types; ring frame and mule frame. The ring frame is faster process, but produces a relatively coarse yarn. for very fine yarns, such as worsted, the mule frame is required because of its slow, intermittent operation. The ring frame, which is general in use, is more suitable for the manufacture of cotton yarns in mass production. Its hundreds of spindles, whirling thousands of revolutions per minute, and its constant spinning action provide a fast operation. The ring spinning frame completes the manufacture of yarn 
(1) by drawing out the roving 
(2) by inserting twist, and 
(3) by winding the yarn on bobbins-all in one operation. 
The bobbins of yarn are removed for such processing as may be desired; for example, the yarn may be reeled into skeins for bleaching or may be wound on cheeses, or spools, for ultimate weaving.

Ring Frame M/C

Steps

The principle of spinning is same as that used in roving except that the operation is more refined and a ring and traveler are used instead of the flyer. From bobbin roving is fed between set of drafting rolls to draw strand down to its final desired size. The spindle turns bobbin at a constant speed. The front set of rolls is adjusted to deliver yarn at a speed sufficient to insert desired mount of twist as strand moves along. The traveler glides freely around ring. The tension caused by drag of traveler causes yarn to wind on bobbin at same rate of speed as it delivered by rolls.