ОЦІНЮВАННЯ ЕФЕКТИВНОСТІ ВИКОРИСТАННЯ РОБОЧОГО ЧАСУ В АВТОМАТИЗОВАНИХ ВИРОБНИЧИХ СИСТЕМАХ ДЕРЕВООБРОБНОГО ВИРОБНИЦТВА

A new method of calculating additional losses of running time in automated woodworking processing lines has been developed. This method is used thereafter for the analysis and synthesis of automated lines of woodworking manufacturing. For this purpose, the impact of woodworking manufacturing technological operations stability on the efficiency of the automated processing systems and technological lines functioning has been investigated. Small values of technological operations stability parameters, as well as imposed losses of machine running time are the main reasons for the low efficiency of automated processing systems at the woodworking industry enterprises. Woodworking and wood-base materials processing are significantly influenced by stochastic factors: size and quality characteristics of raw materials, parameters and conditions of technological equipment, manufacturing process organization, external influences. The new method makes it possible to consider the manufacturing process from the perspective of mass service theory and to use simulation modeling for studying the structure and layout of automated lines in order to increase the efficiency and productivity of their work. An important task for researchers is to estimate all components of labor time losses with high accuracy to ensure high manufacturing productivity. The amount of running time losses is affected by the number of consecutively working machines at the automated line. In automated lines with high stability of the technological equipment functioning, the automated line running time utilization ratio is significantly higher, the efficiency and productivity of woodworking process increases. It has been established that the efficiency of automated lines with sequential placement of machines decreases due to imposed losses of the machine’s operation running time, which arise during the operation of the equipment. The impact on the production efficiency of all components of the equipment running time losses has been evaluated in order to reduce their impact on production efficiency and to ensure high productivity of automated woodworking processing lines. Proposed new method uses a correction factor for the calculation of automated lines, depending on the number of machines in the technological flow and takes into account the dependence of the running time-imposed losses degree on the number of machines. Method allows to calculate with higher accuracy the real processes of lines functioning.