Optimization of Spindle Speeds in Ring Frames

Abstract

<span style="font-size:11.0pt;line-height:115%; font-family:" calibri","sans-serif";mso-ascii-theme-font:minor-latin;mso-fareast-font-family:="" "times="" new="" roman";mso-fareast-theme-font:minor-fareast;mso-hansi-theme-font:="" minor-latin;mso-bidi-font-family:"times="" roman";mso-ansi-language:en-us;="" mso-fareast-language:en-us;mso-bidi-language:ar-sa"="">The economics of higher spindle speed of the ring frame has been assessed under the operating conditions in Indian mills. Equations have been derived for arriving at the economics of increasing spindle speeds when there is no restriction on the availability of power as well as during power shortages. It has been shown that an increase in spindle speed will invariably lead to more savings; only if there is no gross profit margin, higher spindle speeds will not be economical. On the other hand, when there is a power shortage, a reduction in speed, and the extent of reduction being a function of the quantum of power shortage and count, would lead to an increase in overall production and to higher savings.</span>