Quality assurance of control at machine-building enterprises of repair profile

The quality of repair of the units is significantly influenced by many factors, and this is not only the wear and tear of the parts coming for repair, the low qualification of the personnel, the old technological equipment, but also the poorly functioning system for organizing metrological support for production, from where there is a significant impact of the error of the measurement tools used on the conclusion of the validity of the parts. It is proposed to select control means not only according to the requirements of regulatory documentation, but also taking into account the impact of losses from measurement error. Dependence is given to estimate the economic effect of the replaced measuring instruments by more accurate ones. Using the example of crankshaft neck control under repair production conditions, it is shown that the use of universal measuring instruments with a lower error significantly reduces the level of losses from incorrect rejection and acceptance of critical parts. Features of incoming control of spare parts are disclosed and the feasibility of using only original parts of the manufacturer is justified.