SCIENTIFIC HERITAGE OF PROFESSOR F. KH. BURUMKULOV (TO THE 85TH ANNIVERSARY)

2021 ◽  
Vol 3 (144) ◽  
pp. 166-173
Author(s):  
Valentin P. Lyalyakin ◽  
◽  
Vyacheslav A. Denisov
Keyword(s):  
Testing Machine ◽  
Adult Life ◽  
Forced Oscillations ◽  
Research Purpose ◽  
State Technical ◽  
Scientific Heritage ◽  
Union Institute ◽  
Machine Parts ◽  
Technical University ◽  
Scientific Achievements

Professor F.Kh. Burumkulov holds a special place among the well- known scientists who have contributed to the development of the strengthening and restoring machine parts. The graduate of the Bauman Moscow State Technical University, he devoted his entire adult life to scientific research on testing machine parts, coating methods, introducing innovative equipment and technologies into repair production. (Research purpose) The research purpose is in presenting the main scientific achievements of F.Kh. Burumkulov, evaluating their contribution to solving the problems of restoration and hardening of parts in modern conditions. (Materials and methods) The article presents literary data, scientific works, archival materials, the most significant publications of F.Kh. Burumkulov, his students and associates. (Results and discussion) The article describes the main stages of the professor's activity. In 1965 he graduated from the Bauman Moscow State Technical University, the branch of "Tracked and wheeled vehicles". F.Kh. Burumkulov studied there in graduate school and in 1968 defended his PhD thesis on the topic "Study of steady-state forced oscillations of the transmission of a multi-drive wheeled vehicle 8x8". They pointed out that after defending his dissertation, he worked at the All-Union Institute of Standardization and Metrology and worked his way up from a senior teacher to a deputy director for academic affairs. From 1980 until the last days, the scientist worked in the VNPO "Remdetal", which was repeatedly renamed (currently – FNAC VIM). The article presents the achieved results and scientific contribution at each stage of its activity. (Conclusions) The scientific heritage of Professor F.Kh. Burumkulov includes more than 250 scientific works, including 7 monographs and 75 inventions. The results of his scientific achievements are recognized by the scientific community; he has trained 2 doctors of sciences and 10 candidates of technical sciences.

METHOD OF TEACHING THE COURSE “ENGINEERING GRAPHICS” AT BAUMAN MOSCOW STATE TECHNICAL UNIVERSITY

2018 ◽  
pp. 27-32
Author(s):  
Lyudmila Ivanovna Golovacheva ◽  
◽  
Raisya Abdrakhmanovna Maksutova ◽  
Natal'ya Aleksandrovna Fedoritenko ◽  
◽  
...  
Keyword(s):  
State Technical ◽  
Engineering Graphics ◽  
Technical University

METHODS FOR RESTORING WOLVES OF ROLLING PRODUCTION

2020 ◽  
Vol 4 (141) ◽  
pp. 114-122
Author(s):  
DAR’YA LEBEDEVA ◽  
◽  
ANNA KARPUNICHEVA
Keyword(s):  
Thermal Effects ◽  
Machine Building ◽  
Research Purpose ◽  
Technical Literature ◽  
Production Methods ◽  
Advantages And Disadvantages ◽  
Rolling Production ◽  
Machine Parts ◽  
The Stability ◽  
High Degree

Large forces and significant thermal effects are created on the rolls when rolling sheets. The higher the stability of the rolls, the less downtime during their rerolling and higher productivity. (Research purpose) The research purpose is in analyzing the ways of restoring rolls and choose the most appropriate method for restoring these parts. (Materials and methods) The article presents the analysis of the scientific and technical literature on the topic of rolling production, methods for restoring large-sized machine parts of machine-building and metallurgical industries that work in difficult conditions and are subject to a high degree of wear. Authors try to solve the problem by means of comparative and logical analysis based on theoretical and empirical methods of scientific research. (Results and discussion) The article presents two groups of methods for restoring rolled rolls: banding and surfacing the working layer of the roll. Authors have analyzed each method in terms of technology, equipment, and feasibility. The article presents the advantages and disadvantages of the methods under consideration. (Conclusions) The most acceptable way to restore parts with a high degree of wear is surfacing. It is most efficient to apply submerged surfacing using an additional hot additive. Such surfacing, despite some complication of the equipment design, allows to deposit the metal on the roll with low heat input and in most cases in one pass. Surfacing using an additional hot additive allows to increase the productivity of the process by up to 250 percent while reducing the penetration depth by 2-3 times and saving energy by up to 40 percent.

Strategies of maintenance and repair of agricultural machinery

2020 ◽  
pp. 38-48
Author(s):  
Aleksey S. Dorokhov ◽  
Aleksandr V. Denisov ◽  
Aleksey A. Solomashkin ◽  
Valeriy S. Gerasimov
Keyword(s):  
Wear Rate ◽  
Technical Condition ◽  
Research Purpose ◽  
Agricultural Machinery ◽  
Maintenance And Repair ◽  
Wear Rates ◽  
Urgent Task ◽  
Machine Parts ◽  
Current Value ◽  
Agricultural Machines

Modern machines are subject to progressive wear that occurs at different rates, which leads to unpredictable failures that reduce the reliability and durability of machines. The strategy of maintenance and repair is aimed at eliminating these problems. (Research purpose) The research purpose is in analyzing the basic principles of the strategy of maintenance and repair of agricultural machinery in order to ensure control of the technical condition of machine parts. (Materials and methods) When resource diagnostics is used, , the allowable value of the parameter is set in advance for a part . This value is the tolerance that corresponds to a certain wear rate of the part. The tolerance is set based on the condition that if the current value of the controlled resource parameter during the next diagnosis is less than the set value, then such a part at the current value of the wear rate can be finalized until the next inter-control check. Taking into account the wear rate of the same type of parts from the group when determining the allowable wear during their resource diagnostics becomes an urgent task. (Results and discussions) As a result of research, the article presents "Methodology for determining the main indicators of reliability of parts of agricultural machines with different wear rates" and "Methodology for determining the tolerance system of parts of agricultural machines with different wear rates". (Conclusions) The article presents the tolerance system that reduces the probability of failure of machine parts in operation. During resource diagnostics, those parts whose resource parameters exceed the tolerance are rejected.

Research of operation safety and maneuverability of agricultural low-tonnage road train under critical traffic conditions

2020 ◽  
pp. 28-37
Author(s):  
Zakhid A. Godzhayev ◽  
Teymur Z. Godzhayev ◽  
Vladimir A. Korolyash ◽  
Ol’ga Yu. Solov’yeva
Keyword(s):  
Load Capacity ◽  
Research Purpose ◽  
State Technical ◽  
Safe Operation ◽  
Mechanical Coupling ◽  
Emergency Braking ◽  
Traffic Conditions ◽  
Critical Traffic ◽  
Difficult Road ◽  
Agricultural Machines

The article considers conditions for safe operation of low-tonnage road trains with overall trailers, namely universal platforms with a load capacity of up to 3 tons, capable of transporting agricultural machines, mini-factories and other equipment, as well as tourist houses. Transportation of such trailers on wheels is associated with high risks arising at small turning radii and emergency braking. (Research purpose) The research purpose is in improving the safety of operation and maneuverability of agricultural low-tonnage road trains operating in difficult road and terrain conditions of agricultural production. (Materials and methods) Authors have analyzed the results of research and experiments on the safe operation of low-tonnage road trains with trailers weighing up to 1 ton. The authors developed and tested on the basis of VIM and the Volga State Technical University a mechanical coupling device with a flexible connection that increases the handling and maneuverability of the trailer. (Results and discussion) The authors determined that the critical turning radii depending on the speed of a low-tonnage road train in different road conditions and different loading of the trailer when driving in front and rear for a conventional single-axle trailer with a load capacity of 1.5; 2; 2.5; 3 tons. It was found that the maneuverability is largely provided by the additional force in the cable, so authors recommend using a cable with a diameter of at least 9 mm. (Conclusion) Further research will make it possible to determine the critical indicators of safe operation of a low-tonnage road train with a load capacity of up to 3.5 tons: safe speed when passing critical turns, emergency braking and reversing.

Research of the Mechanical Properties of the Filament from the Percentage of Filling when Prototyping Machine Parts

2021 ◽  
Vol 410 ◽  
pp. 617-623
Author(s):  
Elena N. Gryadynova ◽  
Andrey V. Gorin ◽  
Alexey Yu. Rodichev
Keyword(s):  
Tensile Strength ◽  
Tensile Testing ◽  
Testing Machine ◽  
Experimental Studies ◽  
Relative Deformation ◽  
Strain Diagram ◽  
Experimental Sample ◽  
Tensile Testing Machine ◽  
Machine Parts ◽  
Fisher’S Criterion

The article contains the analysis of thermoplastics used in prototyping machine parts. We used several types of experimental samples with different filling percentages. The equipment on which the experimental studies were carried out is shown. During the experiment, a specialized tensile testing machine was used. The experimental samples were installed in the developed centering device. Normal conditions were observed during the tests. The results of an experimental tensile study of PLA-plastic specimens are presented. The typical stress-strain diagram of an experimental sample is described, which describes the dependence of stress on relative deformation. An equation of the linear dependence of the tensile strength on the percentage of filament filling has been compiled, which makes it possible to determine the tensile strength of the product at any percentage of the filling of the plastic filament. The assessment is adequately verified by Fisher's criterion. Recommendations for filament filling in prototyping machine parts are given.

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