Abstract:

In the paper a method of the best variant selection of the manufacturing process of a spindle with a collapsed balloon crown of a ring spinning frame is presented. The method implements the original optimisation procedure based on the given criteria, taking into consideration the importance of the criteria. The unit manufacturing cost and five criteria of the manufacturing quality were taken as the assessment criteria, and the knowledge of experts was used to determine the importance of the criteria given for assessment. Each expert built his own importance matrix of the assessment criteria, comparable in pairs, using the Saaty method. On the basis of a cumulative matrix the weights of individual criteria were determined. The criteria of the assessment obtained from calculations and measurements were normalised. In the next stage, normalised decisions were created by raising each assessment to a power equal to the corresponding weight. In the last stage of the proceedings a single, optimal alignment comprising the smallest s-th components of the individual decisions d1, d2, …, dm was created. The variant which corresponds to the largest component of the optimal alignment is assumed as the best.