Methodology of preparation to manufacture oriented on geometrically and technologically similar elements

The paper presents the stages of creating technoology and use in practice a methodological approach to the process of preparation of manufacture of machinery elements designed as series of types and modular systems of constructions. The methodology covers stages of the process (in this case manufacture preparation process) and methods aiding these stages. Two new methods of selection of technological data were developed for geometrically similar elements. Technological similarity method and algorithmic method.The established methods and algorithms are the basis to generate series of types of technologies of elements that are technologically similar. At the same time, the determined similarity conditions and relations in the area of design and technology are the basis to create technological databases that might, in the process of developing a technology, be oriented towards productive capacity meeting the criteria of repeatability, modular structurization and efficiency.