Digital method for wool cross length testing

In the wool spinning productiton,the determination of drawing gages for the series yarn production processes is based on the wool cross length,and the drawing gages will finally have influences on the drawn sliver evenness. Therefore,it is critically important for the yarn production technology to obtain the wool cross length with high efficiency and precision. This paper takes the comb sorter test wool length as original data,and on the basis of theoretical analysis and logic reduction,a digital wool length distribution array curve is obtained with Microsoft Office Excel. And through adding a tendency curve,a high precision polynomial curve regression equation with a relative ratio up to 0. 994 is achieved,and the deviation ratio of the testing result is only 0. 77% compared with conventional manual length distribution method. Testing of the wool cross length with the digital method has advantages of convenience,high speed,precision and high efficiency.