Systemology of objects and processes in digitalization of the life cycle of engineering products

The main methods of classification and coding in mechanical engineering are studied from the systemic point of view, their main characteristics are considered. When analyzing the systemology of classification of machines of various functional purposes, the absence of a unified methodological approach in constructing the classification and in coding the products is shown. In the existing classifications, products are considered constructively only as objects of operation, and the other stages of their life cycle are not affected. As a result of the system analysis, a unified methodological approach is proposed for constructing classifications, coding and unification of products for various functional purposes, reflecting the features of all stages of their life cycle. For the production stages of the life cycle, a system of classifications using various coding methods is considered: a description of structural and technological elements formed by the tool edges, a sequence of numbers, taking into account signs; a description of the surfaces formed by tool movements, in numbers, indicating the directions of feed movements; and to describe complex-profile surfaces and a combination of long-range elements, their combination is used. The expediency of using each of the classifications in real production conditions is determined by the statistics of use of structural and technological elements and surfaces, as well as of tools that form them.

The Features of Nanocomposite Structure Formation on the Surface of Metal Products under the Influence of Low-Temperature Plasma

The work presents the study of technological considerations of the nanocomposite structure formation on complex profile surfaces under the influence of low-temperature plasma aimed at wear resistance increase of metal products, the research being conducted on the novel plant.

Impact of local technological concentrators of stresses upon operation properties of parts worked

It is defined that during the machining of complex surfaces in parts operating under large fluctuating loads, in critical transition areas of profile conjugate surfaces there are formed local technological concentrators of stresses contributing to formation, development of fatigue cracks and to further destruction of parts in the course of operation. Such phenomena are discovered, for instance, at high-loaded gear teeth machining, at turbine blade profile surface machining, at manufacturing large-modular tapered threads and other parts having complex profile surfaces. There are developed and introduced methods for value decrease of such stress concentrators on the basis of the application of different methods for local surface plastic deformation of a surface layer in transition areas of profiles. As a result the probability of fatigue crack formation decreased considerably and fatigue strength in parts machined increased essentially.

Development of Controlled Micro-Mirrors with Large Rotation Angle

Development of micro-mechanical sensors and systems based on them is one of the development branches in microelectronic technology and labeled as one of the technologies of the 21-st century. The relevance and significance of the paper related to the methodology creation for the development and manufacture of micro-mirror with large rotation angle. Methodology was based on an integrated approach to solving such problems as the processes of surface preparation, etching of the complex profile surfaces, matching the silicon structures, etc. which allows to create MOEMS elements.