scholarly journals Automated technological system to ensure contact stiffness of machine parts

Author(s):  
Анатолий Суслов ◽  
Anatoliy Suslov ◽  
Дмитрий Петрешин ◽  
Dmitriy Petreshin ◽  
Олег Федонин ◽  
...  

A single-stage technological support of operation properties of machine parts and their joints is based on the integration and on the automated solution of problems of a designer and technologist for the definition of optimum conditions for machining parts at the stage of design-technological pre-production. A joint use of a self-learning technological system and an automated system of scientific investigations of contact stiffness will allow ensuring a required value of the operation property of machine parts and their units with the specified accuracy.

Author(s):  
Ihor Babyn

Creation of automated technical and technological support of the system of washing milking installations, which intensifies the process without additional costs, becomes of paramount importance in solving the problem of improving the quality of milk. The purpose of the research is to conduct a production inspection of the developed automated system for flushing milk lines of milking parlors. On the basis of the received mathematical models of process of work of washing of milking installations with air and hydro-injectors, and also the photodetector of definition of pollution of the milk line of the milking parlor the automatic system of its washing is developed. energy consumption. As a result of industrial inspection of automatic milking line washing systems, it was found that the lowest value of microbiological contamination of milk (number of mesophilic aerobic and facultative-anaerobic microorganisms) is observed for the variant with adaptive washing duration and adaptive mode of air injectors. For UDE-16 the Christmas tree makes 82 thousand CFU/cm3 (extra grade of milk), and for UDM-100 "Bratslavchanka" – 248 thousand CFU/cm3 (the highest grade of milk). As a result of production inspection of the automatic milking line washing system of milking installations, it was found that the lowest values of water consumption are observed for the variant with the shortest washing duration (5 min/10 min/ 5 min) For UDE-16 the Christmas tree makes 185 l, and for UDM-100 "Bratslavchanka" – 268 l. The lowest value of energy consumption is observed for the basic version of the flushing system (without additional equipment). For UDE-16 the Christmas tree makes 13,5 kWh, and for UDM-100 "Bratslavchanka" – 21,4 kWh.


2019 ◽  
Vol 2019 (4) ◽  
pp. 19-26
Author(s):  
Евгений Польский ◽  
Evgeniy Pol'skiy ◽  
Сергей Сорокин ◽  
Sergey Sorokin

The paper reports the results of investigations on technological support of reliability indices for as-sembly units taking into account changes of contacting functional dimensions of single machine parts at the operation stage. At the heart of the work there is an analysis of dimension ties of an assembly unit ensuring a correlation between some basic stages of a product life cycle at which product quality is formed: designing with the quality parameter standardization of a surface and functional dimension accuracy, manufacturing with the definition of technological parameters and confirmation of accuracy achieved at separated operations and an operation at which changes of quality and accuracy parameters takes place.


Author(s):  
Олег Горленко ◽  
Oleg Gorlenko

A method for technological support of roughness parameters for machine parts based on an experimental statistical approach is considered. The essence of the method consists in the processing of test blanks (or their test surfaces) according to a pre-planned scheme, in the roughness parameter assessment of test blanks, in the development of mathematical statistical model of the connection of roughness parameters with technological factors and on the basis of the model given a definition of their levels ensuring obtaining the roughness parameter values specified at machining a basic batch blanks. The peculiarities in technological support of relative supporting lengths of a rough surface profile and also a method for the formation of complex functional parameters of a rough surface are touched upon. The necessity for the creation of portable control measuring systems allowing the realization in practice this method is emphasized.


Author(s):  
V. F. Bezyazychnyj ◽  
M. N. Dmitrieva

Examples of solving problems according to the method described in the first part of this work in the processing of contacting surfaces by turning, milling and grinding, as well as the comparison of calculated and experimental values of the contact convergence of surfaces, and the algorithm for calculating the determination of machining modes in order to ensure a given contact stiffness are given. The article describes the practical application of the research results in relation to the assembly unit of an aircraft gas turbine engine.


Author(s):  
V. F. Bezyazychnyj ◽  
M. N. Dmitrieva

The theoretical provisions on establishing the relationship between the geometric characteristics of the surfaces of contacting parts, as well as the physical and mechanical characteristics of the material of these surfaces on their contact stiffness, including the contact stiffness of the surfaces of parts of high-load gas turbine engine components, are presented. The analysis of dependencies on the relationship of contact stiffness and pliability of surfaces with the technological conditions of their processing by various types of cutting process (turning, milling, grinding) is given.


2021 ◽  
Vol 2021 (4) ◽  
pp. 20-24
Author(s):  
Sergey Siyanov

The oretical dependences for the definition of wear intensity depending upon conditions of finish-strengthening allowing the definition of optimum conditions for support of required wear intensity in friction surfaces during finish-strengthening are shown.


2021 ◽  
Author(s):  
Lun Ai ◽  
Stephen H. Muggleton ◽  
Céline Hocquette ◽  
Mark Gromowski ◽  
Ute Schmid

AbstractGiven the recent successes of Deep Learning in AI there has been increased interest in the role and need for explanations in machine learned theories. A distinct notion in this context is that of Michie’s definition of ultra-strong machine learning (USML). USML is demonstrated by a measurable increase in human performance of a task following provision to the human of a symbolic machine learned theory for task performance. A recent paper demonstrates the beneficial effect of a machine learned logic theory for a classification task, yet no existing work to our knowledge has examined the potential harmfulness of machine’s involvement for human comprehension during learning. This paper investigates the explanatory effects of a machine learned theory in the context of simple two person games and proposes a framework for identifying the harmfulness of machine explanations based on the Cognitive Science literature. The approach involves a cognitive window consisting of two quantifiable bounds and it is supported by empirical evidence collected from human trials. Our quantitative and qualitative results indicate that human learning aided by a symbolic machine learned theory which satisfies a cognitive window has achieved significantly higher performance than human self learning. Results also demonstrate that human learning aided by a symbolic machine learned theory that fails to satisfy this window leads to significantly worse performance than unaided human learning.


Author(s):  
Igor I. Kartashov ◽  
Ivan I. Kartashov

For millennia, mankind has dreamed of creating an artificial creature capable of thinking and acting “like human beings”. These dreams are gradually starting to come true. The trends in the development of modern so-ciety, taking into account the increasing level of its informatization, require the use of new technologies for information processing and assistance in de-cision-making. Expanding the boundaries of the use of artificial intelligence requires not only the establishment of ethical restrictions, but also gives rise to the need to promptly resolve legal problems, including criminal and proce-dural ones. This is primarily due to the emergence and spread of legal expert systems that predict the decision on a particular case, based on a variety of parameters. Based on a comprehensive study, we formulate a definition of artificial intelligence suitable for use in law. It is proposed to understand artificial intelligence as systems capable of interpreting the received data, making optimal decisions on their basis using self-learning (adaptation). The main directions of using artificial intelligence in criminal proceedings are: search and generalization of judicial practice; legal advice; preparation of formalized documents or statistical reports; forecasting court decisions; predictive jurisprudence. Despite the promise of using artificial intelligence, there are a number of problems associated with a low level of reliability in predicting rare events, self-excitation of the system, opacity of the algorithms and architecture used, etc.


Author(s):  
Анатолий Суслов ◽  
Anatoliy Suslov

The solution of the problem of the assurance of competitive ability and quality of engineering products during their design and manufacturing is stated. The dependence for the definition of a complex factor of engineering product competitive ability is shown. The concept of life optimum is given. The structural procedures for the solution of problems of a designer and technologist for the assurance of engineering product quality are shown.


Author(s):  
Vladimir Fedorov ◽  
Anatoliy Suslov ◽  
Maksim Nagorkin

In the paper there is shown a methodology for the parameter reliability diagnostics of the technological systems of machinery functional surface machining on their quality parameters. The problems arisen before designers and technologists and methods for their solution are under consideration. There are recommended roughness parameters affecting considerably the formation of a number of operation properties of surfaces. The circuits for the definition of technological system parameter reliability and a complex approach to experimental researches in the course of diagnostics are considered. The recommendations for the formation of standard computer modules of diagnostic systems and examples of their use are given.


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