Improving the reliability of machine and tractor units in technological processes

Lebedev, Pavel; Lebedev, A.; Pavlyk, R V; Zakharin, Anton

doi:10.1088/1755-1315/996/1/012004

IOP Conf. Ser.: Earth Environ. Sci.

2022

DOI: 10.1088/1755-1315/996/1/012004

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Improving the reliability of machine and tractor units in technological processes

Pavel Lebedev

A. Lebedev

R V Pavlyk

et al.

Abstract: The paper describes a method for improving the reliability of a machine-tractor unit in technological processes. Two approaches aimed at improving the reliability of the least reliable elements are analyzed. To improve the reliability of power units, it is proposed to spray SiO2-based thin-film coatings on the working surfaces of plunger pairs. The calculations show that an increase in the service life of the plunger pairs is 2 ... 2.5 times higher than that of the serial ones. To improve the reliability of wo… Show more

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2023

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MATHEMATICAL MODEL OF TECHNOLOGICAL ASSEMBLY PROCESSES IN MACHINE-BUILDING AND REPAIR PRODUCTION

Apazhev,

Shekikhachev,

Pazova

et al. 2023

Teh. serv. maš

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In a logical representation, the technological process of assembling any mechanism or assembly, including the crank mechanism of the engine, can always be considered as one of the forms of displaying functional and constructive signs of searching for some objective function. (Research purpose) The research purpose is substantiating the effectiveness of original approaches to mathematical modeling of assembly processes in machine-building and repair industries. (Materials and methods) Conducted research using complete information about the modeling object as part of a unified system of mathematical modeling of assembly processes formed at the levels of abstraction of structure, logical and quantitative predicates. (Results and discussion) It has been shown that modern principles of mathematical modeling are based on the basic provisions of the theory of sets, graphs and mathematical logic. It was noted that of all the considered spaces of production systems describing assembly technological processes, the space of predicates of the mechanism and technological system is most closely related to the problem of ensuring a given accuracy of the closing link in a particular real dimensional chain. As a result of the assembly process, in general, parts or assemblies are transformed into a connected system of Cartesian bodies with a limited number of degrees of freedom. Mathematical modeling of assembly processes at the level of quantitative predicates is characterized by the least degree of response, but it gives a description in a more rigorous mathematical form that allows for a well-founded optimization of accuracy parameters and methods of performing technological techniques that provide unambiguous optimization. The applied value of modeling at the level of quantitative predicates is significantly higher than the description at the levels of structural and logical properties and relationships. (Conclusions) Mathematical modeling of assembly technological processes with a cybernetic approach at the levels of multiple, logical and quantitative predicates provides the best adequacy and applied significance in the case of building analytical models.

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MATHEMATICAL MODEL OF TECHNOLOGICAL ASSEMBLY PROCESSES IN MACHINE-BUILDING AND REPAIR PRODUCTION

Apazhev,

Shekikhachev,

Pazova

et al. 2023

Teh. serv. maš

View full text Add to dashboard Cite

show abstract

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Improving the reliability of machine and tractor units in technological processes

Cited by 1 publication

References 8 publications

MATHEMATICAL MODEL OF TECHNOLOGICAL ASSEMBLY PROCESSES IN MACHINE-BUILDING AND REPAIR PRODUCTION

MATHEMATICAL MODEL OF TECHNOLOGICAL ASSEMBLY PROCESSES IN MACHINE-BUILDING AND REPAIR PRODUCTION

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