Optimization of the technological process of selective assembly of precision pairs of fuel equipment

摘要

Selective assembly is a cost-effective approach for reducing the overall variation and thus improving the quality of an assembled product. In this process, components of a mating pair are measured and grouped into several classes as they are manufactured. The final product is assembled by selecting the components of each pair from appropriate classes to meet the required specifications as closely as possible. This approach is often less costly than tolerance design using tighter specifications on individual components. It leads to high-quality assembly using relatively inexpensive components. In this article the component parts of technological maintenance of assembly of the precision pairs (bearings, ball screw pairs, plungers pairs), which have an influence on the assembly quality of pairs and possibility of realization of assembly process are described. To achieve this goal, authors suggest solving two tasks: research the influence of form deviations and the influence of camber of axis of the parts on the technological process of assembly of plunger precision pairs.