Volchkevich

The article substantiates the urgency of the problem to estimate the industrial uncertainty factors in calculating the necessary equipment quantities when designing the manufacturing facilities in machinery building. It presents a new approach and a mathematical technique for calculating the necessary equipment quantity under conditions of multiproduct versatile manufacturing. The causes of internal and external uncertainties and methods for predicting their levels are presented. The article gives an example for calculating the necessary equipment quantities for the NC-machinery facilities. The approach proposed can be used in designing the manufacturing facilities of mechanical assembly production.

The author proves the urgency of designing production facilities for multiproduct manufacturing and describes a methodological approach to calculation of the required number of equipment subject to time consumption in alignment procedures and rejection of replenishing. The analysis of NC machinery functional status is presented. The author proposes hypotheses of machining time per detail dependence on refining time and age related realignment. The results can be used for designing production facilities and planning manufacturing programs for NC machinery facilities.

 The article covers the data on actual functionality of NC machines as part of multiproduct manufacturing facilities; the data is based on the author's production research. The main categories of fund consumption were analyzed. The main problems of introducing up-to-date high-performance NC machines at domestic machine building plants were considered. The results and recommendations presented in the article can be used to solve design problems or for technical re-equipment and upgrading machining process.

The article covers an urgent methodological approach to solving the problem of determination of the number of assembly sets of details and batch sizes in order to provide continuous mechanical assembly production with minimal costs. Non productive time consumption for machinery manufacturing facilities invariant to their production lines were taken into account in calculating the optimum number of assembly sets. The author provides an example of calculating an optimum number of serially produced assembly sets for multiproduct manufacturing. The proposed technique was aimed at solving design and planning problems of mechanical assembly production.