Izvestiya of Samara Scientific Center of the Russian Academy of Sciences

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Current Issue

Vol 23, No 3 (2021)

Articles

IN MEMORY OF THE OUTSTANDING RUSSIAN SCIENTIST-TECHNOLOGIST, HONORED WORKER OF SCIENCE AND TECHNOLOGY OF THE RSFSR, PROFESSOR BORIS KRAVCHENKO
Nosov N.V.
Abstract
The article is dedicated to the memory of the outstanding Russian scientist-technologist , Honored Worker of Science and Technology of the RSFSR, Doctor of Technical Sciences, Professor Boris Kravchenko .
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):5-8
pages 5-8 views
NUMERICAL CALCULATION OF THE VACUUM DEGREE FOR A CORRUGATED WALL
Adeyanov I.E., Alexandrova M.Y.
Abstract
The article presents a numerical calculation of the corrugated wall of a transformer under pressure. The permissible degree of evacuation of the wavy transformer tank is determined. The statement of the problem is formulated as follows: to determine the limit of the maximum allowable pressure during the evacuation of the tank with different geometrical dimensions of the corrugation. In this case, the maximum equivalent stress should not exceed the yield point and the walls of the corrugation should not close. Numerical calculation is carried out by the finite element method. This approach to calculating the behavior of a corrugated wall under pressure can be used to determine the maximum allowable internal pressure of the tank.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):9-12
pages 9-12 views
EFFICIENCY ASSESSMENT METHODOLOGY COMPLEX SOLUTIONS FOR INDUSTRIAL AUTOMATION
Cherepashkov A.A., Samoylov P.A.
Abstract
The article discusses the problems of introducing CAD systems integrated into complex automated production systems (PLM solutions). One of the reasons for the failures and low efficiency of projects for the implementation of complex automated systems is the lack of criteria for assessing their effectiveness, necessary for the organization of development management. A system of formalized indicators is proposed that allows for analysis and multicriteria optimization of the processes of creating integrated CAD systems. Four groups of indicators have been identified and defined: Functional indicators, presented in the form of tags, reflecting certain achievements in expanding the functionality of the system, increasing the completeness of system procedures, improving the quality of workflows and processed information; Financial and economic indicators, taking into account the customer’s requirements for the costs and timing of the project; Socio-economic criteria demonstrating improvements in the conditions for the activities of the personnel of the automated system; Indicators of the complexity of the solution associated with the level of automation of both design and production stages. The results of a study of projects of complex automation of the leading enterprises of the aircraft and automotive industry of the Samara region are presented. The introduction of a software and methodological complex made it possible to increase the level of automation of dispatching processes and operational planning of production, interconnected with the design and technological design. Due to this, the volume of work in progress has been significantly reduced and equipment changeovers have been minimized. In general, it can be stated that the introduction of a multi-criteria monitoring methodology at the design and production stages of the life cycle of mechanical engineering products can increase the efficiency of the development and implementation of complex automated systems.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):13-17
pages 13-17 views
INCREASING THE EFFICIENCY OF THE CUTTING AND PROCESSING OF GEARS
Papsheva N.D., Akushskaya O.M.
Abstract
The paper presents data on the influence of ultrasonic vibrations on the processes of cutting gears made of difficult-to-cut materials. It is shown that with the introduction of ultrasound into the processing zone, there is a significant decrease in the component of the cutting force Pz, chip shrinkage and the height of the micro-roughness. The wear of the cutting teeth with the imposition of ultrasonic vibrations becomes more stable, and the efficiency of the tooth-working tool increases.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):18-23
pages 18-23 views
SURFACE QUALITY AND DURABILITY OF BEARINGS AFTER SHOT BLASTING
Dmitriev V.A.
Abstract
The results of studies of surface quality parameters and accuracy of bearing rings after finishing abrasive machining of raceways (grinding and superfinishing) and after hydroblasting (HDB) hardening or microbead hardening with the use of cutting fluids are presented and refined.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):24-28
pages 24-28 views
RESEARCH AND DEVELOPMENT OF THE TECHNOLOGY FOR RESTORING THE BLADES OF THE GAS TURBINE ENGINE AFTER OPERATION BY LASER SURFACING
Golubovsky E.N., Zhatkin S.S., Parkin A.A.
Abstract
The paper presents the research and development of the technology for restoring the blades of a gas turbine engine made of ZhS6U alloy after operation by laser pulse surfacing. Metallographic examination and control by the luminescent method at the places of surfacing were carried out. A technology for eliminating defects that occur on the blades during operation has been developed and tested.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):29-34
pages 29-34 views
TOOL HEAD DESIGN FOR A SPECIAL TURNING MACHINE
Krotinov N.B.
Abstract
This article discusses the design sequence of a special tool for processing shafts. An original design of the tool head is proposed, which allows simultaneous cutting, grooving, and chamfering of the shafts on both sides with axial feed with the possibility of adjustment to different diameters and depths. The calculations and operational tests of the tool head showed its functional suitability and reliability. The relatively low cost of manufacturing the tool, versatility, fast setup and changeover ensure high economic efficiency of processing.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):35-39
pages 35-39 views
IMPROVING THE QUALITY OF CONTROL OF WELDED JOINTS IN THE PRODUCTION OF MECHANICAL ENGINEERING PRODUCTS
Malkina I.V., Zhdanov D.V.
Abstract
The purpose of the work is to develop an automated quality control system for welded joints of cable car structures designed and manufactured at the Skado LLC enterprise (Samara) in order to improve the quality of control. The analysis of requirements for welded structures and welded joints of cable cars is carried out, methods of control of welded joints are considered. A block diagram of an automated system for quality control of welded joints based on the method of ultrasonic testing has been developed. The analysis of ultrasonic sensors on phased arrays is carried out. The sensors and actuators of the system are selected. A scheme for interfacing system elements with a programmable logic controller has been developed. The structure of the system and the scheme of interfacing the system elements with the programmable logic controller are described. A method for performing control has been developed.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):40-46
pages 40-46 views
CONSTRUCTION OF A REGRESSION MODEL OF THERMAL RESISTANCE OF A CONTACT PSEUDO MEDIUM
Denisenko A.F., Podkruglyak L.Y.
Abstract
The operating experience of metal-cutting machines made it possible to develop reasonable recommendations for the permissible limit values of temperature for the main subsystems of the machine, which determine the accuracy of processing. However, the decrease in the seriality of the manufactured metal-cutting equipment and the constant improvement of its designs require the development of models that are the basis of engineering techniques that allow at the design stage to predict the thermal picture of the main machine units that affect the processing accuracy. In connection with a significant number of factors influencing the formation of contact thermal resistance, and the difference in the weight of their action, it is proposed to use a pseudolayer (pseudo-medium), consisting of areas of actual contact and cavities filled with air or oil, for their comprehensive consideration in the thermal model of joining parts. To determine the significant factors that dominate the contact thermal resistance, a number of one-factor experiments were carried out. To develop a regression model of temperature change in the contact zone, a PFE of type 24 was performed. The results obtained were verified by the Cochran, Student and Fisher criteria.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):47-54
pages 47-54 views
DETERMINATION OF VIBRATION POWER OF VIBRATION SOURCES OF SPINDLE UNITS OF METAL CUTTING MACHINES
Denisenko A.F., Mikhailov V.V.
Abstract
Monitoring the state of spindle assemblies of modern metal-cutting machines using CIP methods implies the possibility of installing control sensors in places with maximum vibration information content. In this regard, the assessment of the informativeness of the vibration field of the spindle assembly, which can be carried out in advance, taking into account the design fea-tures, geometric and dimensional characteristics, is an urgent task. Based on the energy approach, using the example of the spindle assembly of a universal lathe, a computational model is pro-posed, built along the median planes of the walls. On the basis of the calculated model, the equa-tions of the energy balance were compiled taking into account the conditions for the transfer of vibration power between the walls of the housing. The method for determining the vibration power of the main sources in the spindle assemblies is given: a spindle with residual unbalance, a drive gear and bearings. It has been established that the most significant factors determining the vibration power introduced into the spindle unit housing are the operation of the bearings, the weight of the spindle and the location of its center of mass. The result obtained makes it possible to detect incipient defects in the bearings, which, as practice shows, are the defining elements of the parametric reliability of spindle assemblies. The resulting model of the vibration field can be used to determine the reference values of vibration velocities that are formed from sources in the absence of defects.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):55-61
pages 55-61 views
THE TECHNIQUE OF DETERMINATION OF THE MODE OF MECHANICAL TREATMENT IN THE CONDITIONS OF UNCERTAINTY OF TECHNOLOGICAL INFORMATION WITH TIME-VARYING PARAMETERS
Unyanin A.N., Finageev P.R.
Abstract
O reduce the error in the appointment of the mode in the conditions of uncertainty of information for the first time developed mathematical models and algorithms that provide for the correction of the model parameters relating the input and output parameters of the process, according to the current information about the output parameters. Developed a plan of varying the controllable factors of the technological process, the methodology and the algorithm used to generate mathematical models of the machining process with time-varying parameters. Models take into account the mutual influence of the tool state parameters and the current processing parameters and their impact on the output parameters and allow you to calculate the output parameters of the process at different times. This makes it possible to create prerequisites for the purpose of machining mode with time-varying parameters in the conditions of uncertainty of technological information.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):62-68
pages 62-68 views
TRAINING OF CAD TARGET PERSONNEL IN THE ENVIRONMENT OF A TRAINING VIRTUAL ENTERPRISE
Cherepashkov A.A., Voronin V.N., Sharaukhova A.G.
Abstract
The article is devoted to the tasks of training process engineers working in integrated CAD systems. To develop the skills of technologists to work in a single information space, educational and research virtual enterprises (ERVP) are being developed. The composition and structure of the complex means of providing the educational and research virtual enterprise is proposed. The method of application of the ontological analysis of optimal trajectories for training specialists is described.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):69-72
pages 69-72 views
PROCEDURE FOR CALCULATING THE SURFACE Roughness DURING GRINDING WITH AN ABRASIVE TOOL MADE OF SHS MATERIALS
Nosov N.V., Grishin R.G., Ladyagin R.V., Gordienko Y.M., Salnikov I.M.
Abstract
In the article, studies of the surface roughness during grinding with an abrasive tool made of SHS materials were carried out. Studies have shown that the surface roughness when grinding with SHS KR wheels increases in proportion to the increase in the radius of rounding of the grain top, plunge feed and inversely proportional to the speed of rotation of the wheel and workpiece, as well as the hardness of the material being processed.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):73-76
pages 73-76 views
RESEARCH POROSITY OF ABRASIVE TOOLS
Nosov N.V., Grishin R.G., Ladyagin R.V., Rodionov V.A., Gordienko Y.M.
Abstract
In the article, studies of the active porosity of AI from SHS materials were carried out. The influence of the characteristics of AI, hardness and percentage of Cr3C2 on porosity has been established. Studies have made it possible to link the total porosity with the technological parameters of the structure.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):77-80
pages 77-80 views
METHODOLOGICAL SUPPORT FOR COMMUNICATION NETWORKS AND SERVICES QUALITY MANAGEMENT
Davliatova M.A.
Abstract
The paper is devoted to the analysis of the known methodological support for quality assessment and control of communication services. The known approaches to quality assessment of communication services have mainly been developed in relation to the situation, characterized by the fact that each management system actually relied on its own, dedicated communication system. In this case, most of the results apply to analogue communication systems with predominantly assigned channels (paths) to certain information directions, which together reflect the structure of the control system. The synthesis of communication systems is based on the requirements of the respective control system. As a result of the analysis, the limitations of the known methodological support in the field of assessment and control of the communication services quality were revealed. In order to eliminate the identified limitations of the known methodological support in the field of assessment and control of the quality of communication services, the author has developed: analytical and simulation model of an information and telecommunication system with the required level of reliability of its elements; method for determining the parameters of the development directions of telecom operators’ networks; method for assessing the probabilistic-temporal indicators of the technical resource of the fragments of the information and telecommunication system, generating communication services of a certain type.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):81-90
pages 81-90 views
AUTOMATION METHODS FOR SPECIAL VEHICLES OPERATING IN HARSH ENVIRONMENTS
Chickrin D.E.
Abstract
This paper describes the main principles for development autonomous vehicle, which could be used in harsh environment, especially in mining operations. Actually, the overall structure of system is shown which developed under the author’s guidance. In addition, the main scenarios of the usage are presented. Additionally, there will be described significance of the experimental prototype for testing and checking all subsystems.
Izvestiya of Samara Scientific Center of the Russian Academy of Sciences. 2021;23(3):91-97
pages 91-97 views

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