Effect of dispersed particles of aluminum oxide on the degree of defects of the crystalline structure of the chromium coating

Mardonov, Bakhtiyor; Oripov, Zayniddin; Muminov, Rashid; Ravshanov, Jamshed; Jo’rayev, Nodirbek

doi:10.1051/e3sconf/202341706001

Cited by 6 publications

(4 citation statements)

References 9 publications

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“… radial piston hydraulic machine 15 with high pressure line 16 and make-up line 17;  safety valve 18, installed between the lines 16, 17 of the hydraulic machine 15, and serving to protect the electric drive of the rotator and its transmission from overload by limiting the pressure in the hydraulic machine 15 in stop mode;  a pneumatic-hydraulic accumulator 19 installed in the line 16 of the hydraulic machine 15, designed to provide the required dynamic characteristics of the hydromechanical rotator in various modes of its operation;  pneumatic-hydraulic accumulator 20, installed in the common make-up line 23 and ensuring the operation of the rotator in starting modes;  check valves 21, 22 installed in front of lines 16, 17 of hydraulic machine 15, designed to prevent fluid flow between lines 16, 17, bypassing hydraulic machine 15 and valve 18, as well as to ensure reliable operation of the rotator during reverse rotation and increasing pressure in line 17;  a make-up pump that replenishes fluid losses associated with leaks in the hydraulic machine;  support valve 25, installed after pump 24 and providing pressure in line 23 equal to 100÷150 MPa;  check valve 26, installed after valve 25 and preventing discharge of the hydraulic cavity 20 when pump 24 is turned off;  drainage pipeline 27 of hydraulic machine 15 [7,10,13,19,20].…”

Section: Resultsmentioning

confidence: 99%

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Development of technical solutions for modernization of the rotary feed mechanism of a quarry drilling rig

Muminov,

Yakhshiev,

Ravshanov

et al. 2024

E3S Web Conf.

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This article substantiates and describes the design and operating principle of an electrohydromechanical rotator, presents the results of experimental studies of a prototype, shows ways to reduce dynamic loads and recommendations for improving the rotary-feeding mechanism of a drilling rig of the SBSh-250MNA-32 type. An improved kinematic and hydraulic diagram of an electrohydromechanical rotary-feeding mechanism and installation of a feed pump with a drive electric motor in the machine room of a drilling rig are presented. A design has also been developed for the electrohydromechanical rotary-feeding mechanism of the drilling rig, which can significantly reduce transmission vibrations, increase durability, and, as a result, the productivity of the machine.

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Section: Resultsmentioning

confidence: 99%

“…The developed design of the electro-hydromechanical rotational-feeding mechanism of a drilling rig, which allows, by forming a rational dynamic characteristic of the transmission, to significantly reduce vibrations, increase durability, and, as a consequence, the productivity of the machine [3,7,13,19].…”

Section: Introductionmentioning

confidence: 99%

Development of technical solutions for modernization of the rotary feed mechanism of a quarry drilling rig

Muminov,

Yakhshiev,

Ravshanov

et al. 2024

E3S Web Conf.

Self Cite

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“…Based on the analysis of foreign scientific and technical sources, experience in other branches of technology (mechanical engineering, aircraft engineering, shipbuilding, printing, oil and gas industry, energy), today we can confidently say that the use of a vibration monitoring system leads to the following positive results [4][5][6][7]:…”

Section: Methodsmentioning

confidence: 99%

“…In the event that vibration is measured, for which the measuring device (MD) is used, and vibration analysis (VA) is carried out, automatically or manually controlling the machine in order to maintain dynamic quality at a given level, then a feedback loop is implemented. The implementation of this communication circuit is the task of the vibration monitoring system [4][5][6][7].…”

Section: Methodsmentioning

confidence: 99%

Development of technology and methodology for monitoring the technical condition of metalcutting machines

Yakhshiev,

Egamberdiev,

Mamadiyarov

et al. 2024

E3S Web of Conf.

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This work was carried out with the aim of developing the basic provisions of an automated vibration monitoring system for metal-cutting equipment. The paper presents the theoretical foundations of vibration monitoring technology, which uses regular measurements of vibration parameters, their frequency analysis, and mathematical modeling of degradation processes in machines. Vibration monitoring technology allows to determine the time points necessary for repair and maintenance of equipment based on its actual condition. Applications of vibration monitoring are reducing losses associated with equipment failures and reducing maintenance and repair costs, as well as increasing the safety of work. The most relevant is the implementation of a vibration monitoring system when diagnosing the technical condition of bearings and gears (metal-cutting machines, hydraulic systems). As a result of the research, diagnostic models of changes in the technical condition of metal-cutting machines and vibration characteristics of typical defects were obtained. A method has been developed for assessing the dynamic quality of metalcutting machines using a complex quality indicator determined by measuring and analyzing the spectral characteristics of vibration signals.

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Predictive maintenance of cutting tools using artificial neural networks

Karimova,

Ochilov,

Yakhshiev

et al. 2024

E3S Web Conf.

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In the manufacturing industry, preventative maintenance of cutting tools plays a critical role in ensuring operational efficiency and minimizing downtime. This paper addresses the problem of accurately predicting the wear level of a cutting tool by applying artificial neural networks. The study uses an extensive dataset derived from real-life manufacturing scenarios and uses synthetic and experimental data for illustrative purposes. The use of depth of cut, continuous vibration monitoring using an accelerometer, spindle speed, feed rate and cutting speed contribute to a holistic approach to predicting tool wear in milling processes. This comprehensive set of features is designed to capture the nuanced interactions between machining conditions and tool degradation, thereby improving the model’s predictive accuracy. The architecture, features and algorithm for training the network are described. A neural network has been created and configured to determine tool wear during the milling process. The process of training and debugging a neural network is clearly displayed on the graphs. The performance of the network was tested using test data, which allowed us to obtain good results.

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Effect of dispersed particles of aluminum oxide on the degree of defects of the crystalline structure of the chromium coating

Cited by 6 publications

References 9 publications

Development of technical solutions for modernization of the rotary feed mechanism of a quarry drilling rig

Development of technical solutions for modernization of the rotary feed mechanism of a quarry drilling rig

Development of technology and methodology for monitoring the technical condition of metalcutting machines

Predictive maintenance of cutting tools using artificial neural networks

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