Operation position with rigid inter-aggregate connection

A modern competitive engineering enterprise must provide an effective switching between nomenclature types. This trend underlies the strategy of scientific and technological development of the Russian Federation in terms of priority which is given to digitalization of production. Reconfiguration of automatic mass production lines is most resource intensive due to a variety of operation positions. The connection between automatic line aggregates in mass production is rigid and is characterized by the absence of inter-operational reserves. Shutdown of one aggregate automatically stops the entire line. Estimation of operating capacity time, i.e. operational safety of a position with a rigid inter-aggregate connection, requires estimation of many factors. In this paper, we applied a flow chart of reliability to calculation. The calculation of indices of operating capacity and reliability of operation position with a rigid inter-aggregate connection makes it possible to obtain reliability indices for the second line of development of recomposed operation positions with automatic node change without breaking the rigid inter-aggregate connection between the basic nodes. It was noted that when calculating it is possible to ignore the probability of failure of aggregate nodes due to the simplicity of their design. Moreover, determination of the general formula for the probability of operational safety of an operation position with a rigid inter-aggregate connection allows us to determine the probability of operational safety of the operation position elements with a rigid inter-aggregate connection. The flexibility of automatic production lines of mass production can be provided when switching from systems with rigid inter-aggregate connection to systems with operation positions of variable configuration with plug-in modules. Mathematical support for calculating the reliability of systems with rigid inter-aggregate connection will expand the applicability of “Industry 4.0” and “smart” production concepts.