Pub Date : 2023-02-01DOI: 10.18698/0536-1044-2023-2-11-20
S. Grubyi
The paper considers the method of calculating the rate of deterioration, wear and durability in the carbide tools on the example of prefabricated cutters with the replaceable polyhedral inserts, including those with the wear-resistant coatings. Equations are proposed that relate wear rate of the tool back surface with the cutting speed and the tool material hardness, as the cutting temperature function. It is shown that practical implementation of the calculation method is appropriate for stable conditions with coefficients in variation of the processed and tool material hardness within the 0.1 limit.
{"title":"Quantitative wear indicators in carbide tools with variation in hardness","authors":"S. Grubyi","doi":"10.18698/0536-1044-2023-2-11-20","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-2-11-20","url":null,"abstract":"The paper considers the method of calculating the rate of deterioration, wear and durability in the carbide tools on the example of prefabricated cutters with the replaceable polyhedral inserts, including those with the wear-resistant coatings. Equations are proposed that relate wear rate of the tool back surface with the cutting speed and the tool material hardness, as the cutting temperature function. It is shown that practical implementation of the calculation method is appropriate for stable conditions with coefficients in variation of the processed and tool material hardness within the 0.1 limit.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133308066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-01DOI: 10.18698/0536-1044-2023-2-3-10
G. Timofeev, N.A. Yaminsky
Design and layout capabilities of gearboxes with flexible and rigid links created on the basis of dual mechanisms of parallel cranks (wave gears with external deformation wave generators of the crank-planetary gearboxes and combined planetary-wave mechanisms) most fully satisfy requirements to the transmission mechanisms of the system automatic control of the antenna drives. Methods for calculating geometric characteristics, power interaction of elements, evaluation of the main quality indicators of the wave gear with external deformation wave generators and recommendations for their use are practically missing in the technical literature (except for works of scientists from the Department of Theory of Mechanisms and Machines, Bauman Moscow State Technical University). Therefore, studies aimed at creating methods of calculating and designing these mechanisms for special drives of the automatic control systems are important. The paper describes technique of power calculation of the double mechanism of the wave gear parallel cranks with the wave external deformation generator making it possible to competently design these drives.
{"title":"Power calculation of a coupled mechanism of parallel cranks","authors":"G. Timofeev, N.A. Yaminsky","doi":"10.18698/0536-1044-2023-2-3-10","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-2-3-10","url":null,"abstract":"Design and layout capabilities of gearboxes with flexible and rigid links created on the basis of dual mechanisms of parallel cranks (wave gears with external deformation wave generators of the crank-planetary gearboxes and combined planetary-wave mechanisms) most fully satisfy requirements to the transmission mechanisms of the system automatic control of the antenna drives. Methods for calculating geometric characteristics, power interaction of elements, evaluation of the main quality indicators of the wave gear with external deformation wave generators and recommendations for their use are practically missing in the technical literature (except for works of scientists from the Department of Theory of Mechanisms and Machines, Bauman Moscow State Technical University). Therefore, studies aimed at creating methods of calculating and designing these mechanisms for special drives of the automatic control systems are important. The paper describes technique of power calculation of the double mechanism of the wave gear parallel cranks with the wave external deformation generator making it possible to competently design these drives.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123995589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-01DOI: 10.18698/0536-1044-2023-2-21-29
B. Mokritskiy, A. A. Skripilev
Physical, mechanical and operational properties of tool materials were evaluated by various methods and techniques. However, those that allowed predicting performance of the metal-cutting tools in various operating conditions were becoming more and more in demand. The paper provides certain results of the pendulum scribing (scratching) introduction in evaluating and predicting performance of the coated tool. The parameter under study was crack resistance (resistance to formation and growth of cracks) of the tool material. The process of pendulum scribing was accompanied by registration of the acoustic emission signals. Acoustic emission was involved as a process that physically reflected alteration in the stress-strain state of the tool material.
{"title":"Pendulum scribing with the acoustic emission registration","authors":"B. Mokritskiy, A. A. Skripilev","doi":"10.18698/0536-1044-2023-2-21-29","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-2-21-29","url":null,"abstract":"Physical, mechanical and operational properties of tool materials were evaluated by various methods and techniques. However, those that allowed predicting performance of the metal-cutting tools in various operating conditions were becoming more and more in demand. The paper provides certain results of the pendulum scribing (scratching) introduction in evaluating and predicting performance of the coated tool. The parameter under study was crack resistance (resistance to formation and growth of cracks) of the tool material. The process of pendulum scribing was accompanied by registration of the acoustic emission signals. Acoustic emission was involved as a process that physically reflected alteration in the stress-strain state of the tool material.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121176350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-01DOI: 10.18698/0536-1044-2023-2-48-62
V. Furman, V. Markov, S. Plakhov
Fuel efficiency and exhaust gases toxicity are the main indicators of the locomotive diesel operation. To increase them, the paper proposes to convert the locomotive diesel to working on natural gas. Expediency of such conversion to operate on the natural gas according to the gas-diesel cycle, where natural gas being the main gaseous fuel is ignited from the dose of petroleum diesel fuel, is demonstrated. This diesel engine operation ensures stable ignition of the air-fuel mixture in a wide range of speed and load conditions. An electronic fuel supply control system for the gas-diesel engine was developed. Experimental studies of the locomotive gas-diesel engine created on the basis of the D50 diesel engine with the electronic fuel supply control system in the diesel characteristic modes were carried out. Substitution of the petroleum diesel fuel with natural gas in these modes was 60.3...94.1 % by weight. For the mode corresponding to the first position of the driver’s controller, opacity of the exhaust gases decreased by 19.6 %, when the diesel engine was switched to the gas-diesel cycle.
{"title":"Experimental studies of the locomotive gas-diesel engine with electronic fuel supply control system","authors":"V. Furman, V. Markov, S. Plakhov","doi":"10.18698/0536-1044-2023-2-48-62","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-2-48-62","url":null,"abstract":"Fuel efficiency and exhaust gases toxicity are the main indicators of the locomotive diesel operation. To increase them, the paper proposes to convert the locomotive diesel to working on natural gas. Expediency of such conversion to operate on the natural gas according to the gas-diesel cycle, where natural gas being the main gaseous fuel is ignited from the dose of petroleum diesel fuel, is demonstrated. This diesel engine operation ensures stable ignition of the air-fuel mixture in a wide range of speed and load conditions. An electronic fuel supply control system for the gas-diesel engine was developed. Experimental studies of the locomotive gas-diesel engine created on the basis of the D50 diesel engine with the electronic fuel supply control system in the diesel characteristic modes were carried out. Substitution of the petroleum diesel fuel with natural gas in these modes was 60.3...94.1 % by weight. For the mode corresponding to the first position of the driver’s controller, opacity of the exhaust gases decreased by 19.6 %, when the diesel engine was switched to the gas-diesel cycle.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124294623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-01DOI: 10.18698/0536-1044-2023-2-73-83
N.O. Borschev
Growing heat release in spacecraft accompanied by simultaneous increase in its amount set the task of developing thermal control systems using the two-phase boiling coolant. It accumulates heat in the form of latent vaporization heat making it possible to transfer much larger amount of heat per the coolant unit mass flow rate than at using a single-phase coolant. In addition, introduction of heat transfer at boiling allows maintaining the object temperature in almost the entire circuit close to the boiling temperature of the selected coolant. All heat transfer processes that occur, when the substance aggregation state changes, are much more intensive than with the conventional convective heat transfer; therefore, the mass of heat exchangers, fittings and control elements of the two-phase circuit would be significantly lower than their mass in a single-phase coolant circuit. Capillary or mechanical pumps should pump the coolant in two-phase systems to ensure the thermal regime. At high power, it is more advantageous to use the two-phase boiling coolant with a mechanical pump. Creation of thermal control systems based on the two-phase circuit should be preceded by elaboration of an adequate mathematical model of the two-phase boiling coolant. Mathematical model is proposed that could be used to analyze operation of the two-phase boiling coolant and calculate hydrodynamic, heat and mass transfer processes.
{"title":"Thermal mathematical model of a two-phase circuit with mechanical pump and thermal hydraulic accumulator","authors":"N.O. Borschev","doi":"10.18698/0536-1044-2023-2-73-83","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-2-73-83","url":null,"abstract":"Growing heat release in spacecraft accompanied by simultaneous increase in its amount set the task of developing thermal control systems using the two-phase boiling coolant. It accumulates heat in the form of latent vaporization heat making it possible to transfer much larger amount of heat per the coolant unit mass flow rate than at using a single-phase coolant. In addition, introduction of heat transfer at boiling allows maintaining the object temperature in almost the entire circuit close to the boiling temperature of the selected coolant. All heat transfer processes that occur, when the substance aggregation state changes, are much more intensive than with the conventional convective heat transfer; therefore, the mass of heat exchangers, fittings and control elements of the two-phase circuit would be significantly lower than their mass in a single-phase coolant circuit. Capillary or mechanical pumps should pump the coolant in two-phase systems to ensure the thermal regime. At high power, it is more advantageous to use the two-phase boiling coolant with a mechanical pump. Creation of thermal control systems based on the two-phase circuit should be preceded by elaboration of an adequate mathematical model of the two-phase boiling coolant. Mathematical model is proposed that could be used to analyze operation of the two-phase boiling coolant and calculate hydrodynamic, heat and mass transfer processes.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124624579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-01DOI: 10.18698/0536-1044-2023-2-30-39
V. M. Nerovnyy, A. Konovalov
Repair of blades made of the cast high-temperature nickel alloys with the volume content of γ’-phase of 50...65% and more by fusion and built-up welding practically leads to no results. Only introduction of special methods in certain cases provides restoration of a section satisfying the blade operation conditions. Therefore, the leading foreign and domestic enterprises mainly use high-temperature soldering in vacuum with general heating to repair blades of the nozzle unit, flaps of the adjustable nozzle and other parts of the gas turbine hot pass. It becomes possible to increase performance of the permanent joints (especially the small ones) by high-temperature soldering with the lowest acceptable thermal effect on the base metal through local heating in vacuum by the arc discharge with the hollow cathode. Arc soldering in vacuum with supply of the powder composite solders to the greatest extent combines advantages of built-up welding and high-temperature soldering with the general heating. Results of metallographic studies and mechanical tests of the solder joints obtained by arc soldering in vacuum with powder composite solders on samples with imitation of the surface defects showed higher performance compared to that for joints created by high-temperature soldering in vacuum with general heating.
{"title":"Structure and properties of soldered joints of the high-alloyed nickel alloys obtained by arc heating in the vacuum","authors":"V. M. Nerovnyy, A. Konovalov","doi":"10.18698/0536-1044-2023-2-30-39","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-2-30-39","url":null,"abstract":"Repair of blades made of the cast high-temperature nickel alloys with the volume content of γ’-phase of 50...65% and more by fusion and built-up welding practically leads to no results. Only introduction of special methods in certain cases provides restoration of a section satisfying the blade operation conditions. Therefore, the leading foreign and domestic enterprises mainly use high-temperature soldering in vacuum with general heating to repair blades of the nozzle unit, flaps of the adjustable nozzle and other parts of the gas turbine hot pass. It becomes possible to increase performance of the permanent joints (especially the small ones) by high-temperature soldering with the lowest acceptable thermal effect on the base metal through local heating in vacuum by the arc discharge with the hollow cathode. Arc soldering in vacuum with supply of the powder composite solders to the greatest extent combines advantages of built-up welding and high-temperature soldering with the general heating. Results of metallographic studies and mechanical tests of the solder joints obtained by arc soldering in vacuum with powder composite solders on samples with imitation of the surface defects showed higher performance compared to that for joints created by high-temperature soldering in vacuum with general heating.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"203 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121903691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-01DOI: 10.18698/0536-1044-2023-2-40-47
V. Makarov
The use of the aerodynamic jet force action effect became widespread in designing the automatic sensors for physical and technical parameters of gases and liquids, converters and control devices. This technical solution provides high sensitivity and accuracy of the measured parameters in the rapidly changing processes increasing the speed of work. Introduction of sensors built on the basis of such technical solution is especially important in the automated control systems for fast technological processes, where control over various parameters should be quick and accurate. The paper considers a jet pneumatic optical pressure transducer based on the jet force action effect on a plate, which dimensions are commensurate with those for the jet cross section. Static and dynamic characteristics of the pneumatic optical transducer were determined, where the cumulative parameters were accepted as the quality factor criterion combining the measurements sensitivity with the natural frequency square. Using this criterion, optimal parameters of the sensing element were derived based on the considered aerodynamic effect.
{"title":"Jet transducer designed for automated monitoring and control systems","authors":"V. Makarov","doi":"10.18698/0536-1044-2023-2-40-47","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-2-40-47","url":null,"abstract":"The use of the aerodynamic jet force action effect became widespread in designing the automatic sensors for physical and technical parameters of gases and liquids, converters and control devices. This technical solution provides high sensitivity and accuracy of the measured parameters in the rapidly changing processes increasing the speed of work. Introduction of sensors built on the basis of such technical solution is especially important in the automated control systems for fast technological processes, where control over various parameters should be quick and accurate. The paper considers a jet pneumatic optical pressure transducer based on the jet force action effect on a plate, which dimensions are commensurate with those for the jet cross section. Static and dynamic characteristics of the pneumatic optical transducer were determined, where the cumulative parameters were accepted as the quality factor criterion combining the measurements sensitivity with the natural frequency square. Using this criterion, optimal parameters of the sensing element were derived based on the considered aerodynamic effect.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120946635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.18698/0536-1044-2023-1-94-105
S. V. Arinchev
The paper considers problem of the attacking drone avoiding interception at the final stage of its flight. Duration of this stage is a few seconds. Drones are flying to the target, explode and die. The literature traditionally considers the attack and the anti-aircraft drones independently. It is proposed to identify the attacking and the anti-aircraft drones as a single oscillatory system with the antagonistic components. Antagonistic components are connected using the non-Newtonian elastic element. Test game with a high-explosive drone, test game with a fragmentation drone and 2D salvo game were considered. The game in this case is not a traditional minimax optimization problem, but appears to be simulation of the compromise unstable motion mode. Salvo of three attack drones in the 2D games is aimed against three stationary targets. Anti-aircraft salvo includes two high-explosive and two fragmentation drones. The attacking drones “know nothing” about the anti-aircraft target distribution; thus, each of them “avoids” the anti-aircraft drones simultaneously. One operator is playing. Therefore, the game has only two parameters, i.e. two different stiffness coefficients of any non-Newtonian elastic element. The non-Newtonian oscillatory system under study is non-oscillatory. There are violations of the well-known oscillation theorems of the oscillations theory: with the increasing rigidity, the system oscillation frequency drops, the oscillation forms acquire additional nodes, etc.
{"title":"Interaction between the attacking drones salvo and the anti-aircraft drones salvo as a computer antagonistic non-Newtonian 2D game","authors":"S. V. Arinchev","doi":"10.18698/0536-1044-2023-1-94-105","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-1-94-105","url":null,"abstract":"The paper considers problem of the attacking drone avoiding interception at the final stage of its flight. Duration of this stage is a few seconds. Drones are flying to the target, explode and die. The literature traditionally considers the attack and the anti-aircraft drones independently. It is proposed to identify the attacking and the anti-aircraft drones as a single oscillatory system with the antagonistic components. Antagonistic components are connected using the non-Newtonian elastic element. Test game with a high-explosive drone, test game with a fragmentation drone and 2D salvo game were considered. The game in this case is not a traditional minimax optimization problem, but appears to be simulation of the compromise unstable motion mode. Salvo of three attack drones in the 2D games is aimed against three stationary targets. Anti-aircraft salvo includes two high-explosive and two fragmentation drones. The attacking drones “know nothing” about the anti-aircraft target distribution; thus, each of them “avoids” the anti-aircraft drones simultaneously. One operator is playing. Therefore, the game has only two parameters, i.e. two different stiffness coefficients of any non-Newtonian elastic element. The non-Newtonian oscillatory system under study is non-oscillatory. There are violations of the well-known oscillation theorems of the oscillations theory: with the increasing rigidity, the system oscillation frequency drops, the oscillation forms acquire additional nodes, etc.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122671326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.18698/0536-1044-2023-1-76-84
S.V. Shoronov, R. Romashko, I. S. Kazennov
Results of numerical simulation of the inducer pump with axial and radial outlet are presented for the different axial position in the outlet. Influence of the inducer and the outlet position on hydraulic efficiency, pressure drop, power and design diameter with a change in flow rate is shown. Relevance of the work is caused by the lack of a unified theory for calculating freestanding and upstream inducer wheels in the aviation and space industries. An attempt was made to examine both freestanding and upstream inducer wheels and to show the effect of different wheel positioning on energy characteristics of one of the aircraft inducers. The study demonstrated that the radial outlet and the inducer position from the outlet had significant impact not only on the calculated wheel diameter and its energy characteristics, but also on the maximum flow rate.
{"title":"Effect of the outlet type and its relative position on energy characteristics and design diameter of the inducer pump","authors":"S.V. Shoronov, R. Romashko, I. S. Kazennov","doi":"10.18698/0536-1044-2023-1-76-84","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-1-76-84","url":null,"abstract":"Results of numerical simulation of the inducer pump with axial and radial outlet are presented for the different axial position in the outlet. Influence of the inducer and the outlet position on hydraulic efficiency, pressure drop, power and design diameter with a change in flow rate is shown. Relevance of the work is caused by the lack of a unified theory for calculating freestanding and upstream inducer wheels in the aviation and space industries. An attempt was made to examine both freestanding and upstream inducer wheels and to show the effect of different wheel positioning on energy characteristics of one of the aircraft inducers. The study demonstrated that the radial outlet and the inducer position from the outlet had significant impact not only on the calculated wheel diameter and its energy characteristics, but also on the maximum flow rate.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130791694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.18698/0536-1044-2023-1-33-41
V. Mansur, V. Pershin
Weight continuous dosing of bulk materials is one of the key operations in many technological processes. As a result of analyzing methods and devices of the weight continuous dosing used by the world’s leading manufacturers of dosing systems, it was found that the main reason of decrease in the accuracy of dosing was the dynamic effects on the weight sensor. The material motion in the process of weight measuring causes these effects. The lowest dynamic impacts on the load sensor were observed when using the two-stage dosing technology. The essence of this technology lies in the fact that at the first stage separate portions with fixed weight are formed, which are fed into a vibrating tray at regular intervals and are converted into a continuous flow at the second stage. The portion weight and the time interval values are selected from the condition of equality of the given dispenser productivity to the ratio of the individual portion weight to the time interval between the supply of portions to the device for their conversion into a continuous flow. Dynamic impacts on the sensor are reduced, but are not completely excluded, since the weight of a separate portion is determined during the material motion. To increase the dosing accuracy, a new strategy in implementing the two-stage dosing technology is proposed based on the fact that constancy of the quotient could be ensured not only with the constancy of the dividend and the divisor, but also with variable values of these quantities. The proposed dosing method was experimentally compared with the prototype, which confirmed advantages of the new dosing strategy over the traditional one.
{"title":"Development of a method for weight continuous dosing of bulk materials and its implementation analysis","authors":"V. Mansur, V. Pershin","doi":"10.18698/0536-1044-2023-1-33-41","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-1-33-41","url":null,"abstract":"Weight continuous dosing of bulk materials is one of the key operations in many technological processes. As a result of analyzing methods and devices of the weight continuous dosing used by the world’s leading manufacturers of dosing systems, it was found that the main reason of decrease in the accuracy of dosing was the dynamic effects on the weight sensor. The material motion in the process of weight measuring causes these effects. The lowest dynamic impacts on the load sensor were observed when using the two-stage dosing technology. The essence of this technology lies in the fact that at the first stage separate portions with fixed weight are formed, which are fed into a vibrating tray at regular intervals and are converted into a continuous flow at the second stage. The portion weight and the time interval values are selected from the condition of equality of the given dispenser productivity to the ratio of the individual portion weight to the time interval between the supply of portions to the device for their conversion into a continuous flow. Dynamic impacts on the sensor are reduced, but are not completely excluded, since the weight of a separate portion is determined during the material motion. To increase the dosing accuracy, a new strategy in implementing the two-stage dosing technology is proposed based on the fact that constancy of the quotient could be ensured not only with the constancy of the dividend and the divisor, but also with variable values of these quantities. The proposed dosing method was experimentally compared with the prototype, which confirmed advantages of the new dosing strategy over the traditional one.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114206574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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