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Статті в журналах з теми "Machine-manual technological operation"
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Kirin, Snježana, and Anica Hursa Šajatović. "Determination of Working Methods and Normal Times of Technological Sewing Operation using MTM System." TEKSTILEC 63, no. 3 (September 28, 2020): 203–15. http://dx.doi.org/10.14502/tekstilec2020.63.203-215.
Повний текст джерелаАнотація:
Working processes in the technological sewing process are performed on machine systems characterized by machine-manual work, where the worker and the machine work simultaneously. Such a work system requires a great deal of responsibility in terms of quality, quantity, and the accurate and timely execution of tasks, which requires the quick and accurate response and extremely good psychomotor and visual skills of workers. This paper presents the process of determining the working method and normal times for the technological operation of runstitching women’s blouse collars, which includes the design of an ergonomically designed workplace, the selection and technical equipment of the universal sewing machine and the determination of the optimal work method and normal times using the Methods-Time Measurement (MTM) system. The research results obtained indicate that the technical equipment of a universal sewing machine has a significant impact on the structure of the technological sewing operation and the working method, i.e. the number of auxiliary manual technological suboperations. Improving technical equipment, i.e. increasing the number of automated functions used on a universal sewing machine, reduces the number of auxiliary manual suboperations, reduces the time required to perform the technological operation and increases work productivity.
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Isakadze, Tamaz, Sophio Buchukuri- Sologashvili, and Givi Gugulashvili. "A New Device for Processing Caucasian Rhododendron." Works of Georgian Technical University, no. 4(522) (December 21, 2021): 21–27. http://dx.doi.org/10.36073/1512-0996-2021-4-21-27.
Повний текст джерелаАнотація:
Technological processes differ from each other. Accordingly, the devices on which these technological processes are implemented also differ. As a rule, the optimal solution is to select the right machine or device for each process. This facilitates the entire process even in the event of a breakdown of any device on the production line. Such a machine can be replaced by another machine, manual labor, or the operation can be completely excluded. And if all technological operations are carried out on one machine, then its failure will lead to a complete stop of the entire technological process. The issue of processing the Caucasian rhododendron is considered and an innovative technology is presented, according to which its leaves are shock-frozen, crushed, freeze-dried and the product gets a light smoke aroma. It is shown that the use of different devices for each operation of this technological process can lead to microbiological clogging of raw materials, significant loss of cold and complicate the design of all equipment. Therefore, this process is best carried out in one universal device. A schematic diagram of a new device for processing rhododendron is presented, which ensures all technological operations (shock freezing, frozen leaf grinding, freeze-drying and giving the final product smoke aroma and bitter taste) without contact of the raw material with ambient air.
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Dikarev, Vladimir A., Anna Yu Kikina, Boris I. Kryuchkov, and Irina N. Belozerova. "Retrospectives and Prospects in the Preliminary Design of Human-Machine Interface of Manned Spacecraft." AEROSPACE SPHERE JOURNAL, no. 2 (June 26, 2021): 54–64. http://dx.doi.org/10.30981/2587-7992-2020-107-2-54-64.
Повний текст джерелаАнотація:
The article reviews retrospectives and prospects of design and technological solutions for man-machine interfaces of manned spacecraft in order to determine possible trends in their development for information support of crews of lunar expeditions in manual modes of spacecraft operation in conditions of limited opportunities for operational interaction with a groundbased fl ight control center. Prospects and trends of this kind are especially important to be known and taken into account at the stage of the preliminary design of the considered human-machine interfaces.
4
Jiang, Wei, Yu Yan, An Zhang, Lianqing Yu, Gan Zuo, Hong Jun Li, and Wei Chen. "Live maintenance robot for high-voltage transmission lines." Industrial Robot: the international journal of robotics research and application 46, no. 5 (August 19, 2019): 711–18. http://dx.doi.org/10.1108/ir-03-2019-0057.
Повний текст джерелаАнотація:
Purpose The purpose of this paper is to improve the operation and maintenance intelligence of power systems, and summarize the transmission line robots and their key technologies. High-voltage power cables are important channels for power transmission systems. Their special geographical environment and harsh natural environment can lead to many different faults. At present, such special operations in dangerous and harsh environments are performed manually, which have not only high labor intensity and low work efficiency but also great personal safety risks. Design/methodology/approach For maintenance works that are far away from the tower, power outages are required. With the increasing evaluation of transmission quality and operational safety, and the urgent need for automation and operation of modern power systems, the contradiction between this manual operation and modern high-quality power transmission has become increasingly prominent. An effective method to replace the manual maintenance work is to use the mobile robot to carry the operation manipulator and its end tool, that is, the live maintenance robot. Findings Some achievements have been made in the key technologies of live maintenance robots, the work to be done to meet the basic requirements of complex and changeable line environment and practical application. Based on the existing research results of live overhaul robot, the follow-up research will focus on the practical application needs and the frontier of scientific and technological development, and truly realize the human–machine integration between live overhaul robot–human working environment. Only in this way can the robot better serve the operation and maintenance of the power system. Originality/value This paper reviews the system platform, operation function, structural characteristics and key technologies involved in the power cable robot, and the combination of live maintenance robots and modern high-tech such as big data and cloud computing is also given, and finally, the future development direction of the special operation robot is pointed out.
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Gao, Yan Fei, Guo Ping Li, Chun Dong Jiang, and Ying Jun Li. "Design of the Wire Rope Cleaning and Detection Line Control System Based on Touch Screen and PLC." Applied Mechanics and Materials 455 (November 2013): 495–501. http://dx.doi.org/10.4028/www.scientific.net/amm.455.495.
Повний текст джерелаАнотація:
This paper puts forth an overall plan of integrated control system based on PLC and touch screen according to the technological requirements of wire ropes cleaning and detection line. It introduces an automation control system composed of two parts by touch screen and PLC automation control system. The core of the control system is the PLC which uses I/O to achieve the control of the switch. Touch screen communicates with PLC by means of RS232 to complete all parameters input and actuators operations. First, it designs various modules of the hardware circuit according to the general scheme. PLC controls rough brush motor, high-pressure water cleaning motor, water drying valve, oil drying valve through I/O module. PLC controls take-up motor by D/A output module. It uses temperature controller to realize automatic heating control in the process of water heating and oil heating. At the same time the temperature controller communicates with PLC by means of RS485. Then, it designs the software of PLC control system which adopts the idea of modular design. As to the software of PLC control system, many programs are designed such as manual control function, automatic control function, communicating function and so on. Finally, it designs the Human Machine Interface system which completes many functions such as manual control operation, automatic control operation, parameter setting, system diagnosis, historical records and help system. The system makes the automation and intellectualization to be realized. It can monitor parameters real-time and improves production efficiency.
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KARAZEY, VITALIY, KATERYNA SOKOLAN, ANDRIY KUSHNIRCHUK, and OLEKSIY KALININ. "MODERNIZATION OF THE TURNING TABLE FOR NC MACHINE TOOL." Herald of Khmelnytskyi National University 303, no. 6 (December 2021): 142–46. http://dx.doi.org/10.31891/2307-5732-2021-303-6-142-146.
Повний текст джерелаАнотація:
The article envisages the increase in the efficiency of NC machine tool due to the use of an upgrades design of turning table for installation and fixing of workpieces, the use of which will lead to improved productivity of machining. With the help of a turning table it is possible to perform machining of workpieces of different shapes from several sides without resetting, and to rotate the workpiece in different coordinates to carry out other technological transitions. Such tables are widely used un multi-position hole machining, milling planes on drilling and milling machines. The workpiece is fastened to the turning table by T-shaped longitudinal seams, and the table can take vertical or horizontal position. Ways to reduce the cost of CNC equipment for small enterprises are analyzed. One possible way is to modernize turning tables by replacing the manual drive. When upgrading the table for replacement of the manual drive a stepper motor is installed, which transmits the movement through the coupling and worm-and-worm gear to the faceplate. Modern stepper electric motors provide movement of the work part with an accuracy of 0.01 mm. In addition, the have good operational life due to the lack of a collector unit (in comparison with servo drives), which is subject to considerable wear during operation. Due to the simplicity of design stepper motors have relatively low cost, which is of great importance in today’s production realities. The analysis of operating life and accuracy of modern stepper motors and the choice of motor was carried out. For integration of the modernized table into the system of CNC metal-cutting machine tool the function of command reading sent from the machine control rack and converting them into the direction (DIR) and pitch (PULSE) is proposed to solve this problem. The effect of changing the design of the positioning mechanism on accuracy control is also shown.
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Rashid, Zahid, and Matthias Rötting. "Evaluation of Manual Skill Degradation Due to Automation in Apparel Manufacturing." Applied Sciences 11, no. 23 (November 23, 2021): 11098. http://dx.doi.org/10.3390/app112311098.
Повний текст джерелаАнотація:
Manual skill degradation is a common problem that production managers face in assembly lines due to frequent changes in batch styles. Since the advancement in automated machinery, reliance on manual machines has been reduced. However, due to the high cost of fully automated machinery, it is still not available on a large scale in apparel manufacturing setups as most of the setups are in developing countries. Few related studies regarding the effects of automation on manual skills have been conducted in aviation and other emerging technological advanced fields; little focus was given on the effects of automation in apparel manufacturing. This exploratory study examines automation-induced performance degradation in the apparel production line. Sixty-seven sewing machine operators were initially trained on manual sewing machines to learn a complex production operation. Then, participants were divided randomly into three groups to experience varied amount of automation exposure. The manual machine group (MMG)kept working on the manual machines after the initial training and skill development. In contrast, the automation group (AG) shifted to automated pocket setting machines after skill development. Finally, the refresher training group (RTG) rotated between manual and automated machines after the skill development. The skill retrieval assessment was carried out after six weeks in the production line. The result of an independent t-test showed no significant differences among performances of the three groups after the initial training stage. A significant increase in the average single cycle time (ASCT) and decrease in the right-first-time percent (RFT %) was found in the AG while the ASCT decreased and the RFT% increased among the MMG after the retention interval. The RTG almost maintained its production output and the ASCT due to refresher training drills. Relevance to industry: Production managers usually maintain a skill set among the operators to run the production line smoothly. Therefore, capacity development drills of sewing operators are essential to maintain an efficient required skill set.
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Matuszak, Jakub, and Kazimierz Zaleski. "Analysis of deburring effectiveness and surface layer properties around edges of workpieces made of 7075 aluminium alloy." Aircraft Engineering and Aerospace Technology 90, no. 3 (April 9, 2018): 515–23. http://dx.doi.org/10.1108/aeat-05-2016-0074.
Повний текст джерелаАнотація:
Purpose This paper aims to present a comprehensive analysis of deburring effectiveness and surface layer properties after deburring process by wire brushing from milled 7075 aluminium alloys objects. Edge states (rounding, chamfering), surface roughness around the edge, microhardness and residual stress distribution were analyzed. Design/methodology/approach During the machining process, undesirable phenomenon occurs, which is the formation of burrs at the edges of workpieces. They occur in most elements formed by machining. There are many methods that can be used for deburring, but in the case of large components, typical of aerospace industry, using certain methods becomes difficult or uneconomic. Taking advantage of the fact that a part is mounted on the machine, it is advisable to make deburring operation the last action. This operation can be carried out by wire brushing. Findings On the basis of conducted studies, it was demonstrated that it was possible to choose such technological brushing conditions as to ensure an effective process of deburring, form appropriate edge state and generate the desired surface layer properties. Practical implications The method presented in the article allows for efficient, automatic deburring, especially for large components made of 7075 aluminium alloy. This eliminates manual, time-consuming methods of removing burrs by locksmiths. Moreover, the results allow to evaluate changes occurring in the surface layer after brushing process. Originality/value Results of brushing experiment provide full information on selection of technological parameters to obtain the required surface roughness and edge state. Moreover, analysis of surface layer properties (microhardness, residual stress) allows to assess the degree of impact hitting fibre on the workpiece.
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Shvets, Ludmila. "IMPROVEMENT OF THE SHAKER FOR FRUIT PICKING." Vibrations in engineering and technology, no. 3(98) (October 30, 2020): 56–64. http://dx.doi.org/10.37128/2306-8744-2020-3-6.
Повний текст джерелаАнотація:
Fruits and berries are valuable foods that provide the necessary for human consumption: sugars, proteins, fats, mineral salts, organic acids,pectin, tannins and other substances, vitamins. Also raw materials for the food industry, which are used to make juices, jams, marmalades, jams. Due to the crisis, which covered all areas of human activity in Ukraine, the average annual consumption of fruits and berries per unit of population is less than 50% of the biologically justified norm; the area of orchards is 2.7% of the total area of agricultural land (0.8 million hectares), of which 60% is apple orchards. Improving the situation is possible through the intensification of horticulture - obtaining maximum annual yields through the introduction of the latest advances in science and technology, including in the field of mechanization of fruit production. The most time-consuming operation in the technological process of fruit production is harvesting, which, in particular for apples, accounts for 15-40% of the total cost of garden care. It can be emphasized that the cost of growing apples is 92 times higher than for a similar area of cereals. The solution to this problem is possible through the introduction of fruit harvesters, the use of which allows to increase productivity by 3.7-12.6 times, to release an average of 50 people. per day from the use of one machine and reduce operating costs by 30-50% compared to manual assembly. The most widespread at present for fruit harvesting, as evidenced by the trends of the world agricultural machinery industry, are stem vibrating machines of positional action with inertial linear working bodies. At the same time, the use of serial fruiting means, due to the impersonal process of removal, causes damage to trees and fruits, which are suitable mainly for technical processing or urgent sale in fresh form; the productivity of serial fruit harvesters is relatively low.
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Kharitonov, V. A., I. P. Savrasov, and I. V. Shinin. "Detailing and perfection of calculation of productivity of drawing lines for rebars of A500C and B500C class production based on analysis of procurement contracts." Ferrous Metallurgy. Bulletin of Scientific , Technical and Economic Information 77, no. 1 (January 19, 2021): 80–89. http://dx.doi.org/10.32339/0135-5910-2021-1-80-89.
Повний текст джерелаАнотація:
When foreign companies supply equipment for production of class A500 and B500 cold rebars to the Russian market, the manufacturer as a rule estimate its production indices by generally accepted parameters: machine utilization index (MUI), drawing speed and bars diameter (sometimes with specific differentiation). Usually, MUI and drawing speed are presented as the highest reached parameters without accounting particular conditions of operation at a customer, and sometimes – without configuration of the equipment. With a high price of equipment, a customer often gets low efficiency coefficient of correspondence between the high production parameters announced by the manufacturer and those being realized in practice. It was shown that drawing lines for production rebars of the class mentioned above, are typical by equipment content, for example unreeling and power segments. The difference can be only in coiling equipment segment. Such an equipment refers to equipment of cycling products discharge, which is done only at a coil change (a full coil for an empty one). Accumulation of tonnage is provided by a number of coils, which as a result (of a shift, day, month and a year) makes a production program of such drawing lines. If the change of coils at any coiler configuration (automatic, semi-automatic or manual) requires halt of the drawing line, then such halts must be accounted in the time balance of line operation and down times. Accounting of them can considerably change the announced production indices. Per se the production program of such drawing lines should be made taking into consideration actual MUI, but not the advertising one. Results of monitoring of contractual data of some foreign companies presented, to evaluate actuality of the announced by them indices of the equipment production program, supplied at the Russian market. The calculations of down times accounting change time and coils tonnage, as a relative index of drawing lines productivity and their analysis showed that the advertising data presented in the analyzed contracts, cannot be considered as representing and reference ones for making commercial production program of a customer. A method of calculation proposed and recommendations presented, which any customer can use when making inquiry for purchasing drawing equipment from any manufacturer. Also, the method can be used for internal monitoring of in-house production under conditions of particular state of engineer infrastructure and level of automation and mechanization of basic technological operations.
Дисертації з теми "Machine-manual technological operation"
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Рузметов, Андрій Русланович. "Підвищення ефективності металообробки шляхом врахування зміни працездатності основних робітників". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/21510.
Повний текст джерелаАнотація:
Дисертація на одержання наукового ступеня кандидата технічних наук за фахом 05.02.08 – технологія машинобудування. Національний технічний університет "Харківський політехнічний інститут", Харків, 2016. Дисертація присвячена вирішенню задачі підвищення ефективності технологічних операцій обробки металів різання за рахунок одержання, більшою мірою відповідних дійсним умовам реального виробництва, норм часу підготовки автоматичного режиму роботи технологічних операцій при врахуванні зміни працездатності основних робітників протягом робочого часу. Розроблено математичні моделі функціональних зв'язків між продуктивністю, надійністю технологічної операції й трудомісткістю, типовістю й алгоритмічною складністю її допоміжних процесів, які дозволяють сформувати групи технологічних операцій для багатоверстатного обслуговування з досить високим рівнем використання основного обладнання. Все це дало можливість розробити й проаналізувати імітаційні моделі ділянок існуючого основного й ремонтного виробництва, здійснити технологічні й організаційні зміни в ході оптимізації виробничих витрат.The thesis for a technical sciences candidate’s degree in speciality 05.02.08. – engineering technology National technical university "Kharkov polytechnical institute", Kharkov, 2016. In represented dissertation the problem of the account and optimization of the expenditure of auxiliary time in connecting with handwork and of the machine-hand work of the person in system of the industrial module of machining by the shearing for conditions of small-batch and individual types of manufacture is solved. For achievement of delivered purposes the description and formalization of organization-technical and technological structure of workplaces of machining by cutting with the help of an fuzzy semantic macronetwork is made. The system of recognition of an existing situation and forecasting target industrial situation is developed. The technique of classification of technology factors in view of extents of their stability during realization of a technological process is created. The analysis of existing manufacture is executed, on the basis of the created simulatoin model of a repair section and optimization of a microstructure and parameters of a technological process by a way of organizational changes on a work station and by installation of rational sequence of execution of labour receptions.
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Рузметов, Андрій Русланович. "Підвищення ефективності металообробки шляхом врахування зміни працездатності основних робітників". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/21503.
Повний текст джерелаАнотація:
Дисертація на одержання наукового ступеня кандидата технічних наук за фахом 05.02.08 – технологія машинобудування. Національний технічний університет "Харківський політехнічний інститут", Харків, 2016. Дисертація присвячена вирішенню задачі підвищення ефективності технологічних операцій обробки металів різання за рахунок одержання, більшою мірою відповідних дійсним умовам реального виробництва, норм часу підготовки автоматичного режиму роботи технологічних операцій при врахуванні зміни працездатності основних робітників протягом робочого часу. Розроблено математичні моделі функціональних зв'язків між продуктивністю, надійністю технологічної операції й трудомісткістю, типовістю й алгоритмічною складністю її допоміжних процесів, які дозволяють сформувати групи технологічних операцій для багатоверстатного обслуговування з досить високим рівнем використання основного обладнання. Все це дало можливість розробити й проаналізувати імітаційні моделі ділянок існуючого основного й ремонтного виробництва, здійснити технологічні й організаційні зміни в ході оптимізації виробничих витрат.The thesis for a technical sciences candidate’s degree in speciality 05.02.08. – engineering technology National technical university "Kharkov polytechnical institute", Kharkov, 2016. In represented dissertation the problem of the account and optimization of the expenditure of auxiliary time in connecting with handwork and of the machine-hand work of the person in system of the industrial module of machining by the shearing for conditions of small-batch and individual types of manufacture is solved. For achievement of delivered purposes the description and formalization of organization-technical and technological structure of workplaces of machining by cutting with the help of an fuzzy semantic macronetwork is made. The system of recognition of an existing situation and forecasting target industrial situation is developed. The technique of classification of technology factors in view of extents of their stability during realization of a technological process is created. The analysis of existing manufacture is executed, on the basis of the created simulatoin model of a repair section and optimization of a microstructure and parameters of a technological process by a way of organizational changes on a work station and by installation of rational sequence of execution of labour receptions.
Частини книг з теми "Machine-manual technological operation"
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Troia, Sebastian. "Machine-Learning Defined Networking: Towards Intelligent Networks." In Special Topics in Information Technology, 3–12. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62476-7_1.
Повний текст джерелаАнотація:
AbstractWith the advent of 5G technology and an ever-increasing traffic demand, today Communication Service Providers (CSPs) experience a progressive congestion of their networks. The operational complexity, the use of manual configuration, the static nature of current technologies together with fast-changing traffic profiles lead to: inefficient network utilization, over-provisioning of resources and very high Capital Expenditures (CapEx) and Operational Expenses (OpEx). This situation is forcing the CSPs to change their underlying network technologies, and have started to look at new technological solutions that increase the level of programmability, control, and flexibility of configuration, while reducing the overall costs related to network operations. Software Define Networking (SDN), Network Function Virtualization (NFV) and Machine Learning (ML) are accepted as effective solutions to reduce CapEx and OpEx and to boost network innovation. This chapter summarizes the content of my Ph.D. thesis, by presenting new ML-based approaches in order to efficiently optimize resources in 5G metro-core SDN/NFV networks. The main goal is to provide the modern CSP with intelligent and dynamic network optimization tools in order to address the requirements of increasing traffic demand and 5G technology.
Тези доповідей конференцій з теми "Machine-manual technological operation"
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Gessner, Andrzej, and Roman Staniek. "Method of Assessment of Casting Accuracy and Minimization of Machining Allowances." In ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/esda2012-82140.
Повний текст джерелаАнотація:
The publication demonstrates an accuracy assessment method for machine tool body casting utilizing an optical scanner and a reference design of the machine tool body. The process allows assessing the casting shape accuracy, as well as determining whether the size of the allowances of all work surfaces is sufficient for appropriate machining, corresponding to the construction design. The described method allows dispensing with the arduous manual operation - marking out. Marking out, depending on the size and complexity, might take several working shifts for prototype casting. In case of large and elaborate casts, as those of machine tool bodies, marking out is often restricted only to the first cast of the desired body produced in a given casting mold. Such course of action is based on an assumption that casting is reproducible; hence, no need to assess each and every individual cast. While this approach saves time, it often results in late detection of casting errors (allowance shifts or insufficiencies) during the actual machining process. That, in turn, results in considerable losses due to the disruption of the work process and often demands cast repair. The aim of the hereby presented study is to introduce a new technological premise dispensing with manual marking out as well as allowing fast verification of the cast shapes.