Academic literature on the topic 'Деталь складнопрофільна'
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Journal articles on the topic "Деталь складнопрофільна"
Новіков Ф. В. and Полянський В. І. "ВИЗНАЧЕННЯ УМОВ ПІДВИЩЕННЯ ЯКОСТІ МЕХАНІЧНОЇ ОБРОБКИ ЗА ТЕМПЕРАТУРНИМ КРИТЕРІЄМ." Перспективні технології та прилади, no. 17 (December 29, 2020): 99–106. http://dx.doi.org/10.36910/6775-2313-5352-2020-17-15.
Full textЛазебний, В., C. Досенко, and О. Білевська. "Принципи 3d моделювання механічних деталей для застосування 3d принтера." COMPUTER-INTEGRATED TECHNOLOGIES: EDUCATION, SCIENCE, PRODUCTION, no. 41 (December 15, 2020): 51–58. http://dx.doi.org/10.36910/6775-2524-0560-2020-41-09.
Full textDissertations / Theses on the topic "Деталь складнопрофільна"
Лавриненко, Сергій Миколайович, Ірина Яківна Храмцова, Ольга Владиславівна Кохановська, and В. І. Кохановський. "Математичні моделі ударно-контактної взаємодії елементів механічних систем: теоретичні основи та промислове впровадження." Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/38492.
Full textМельник, В. Є., О. В. Соловей, and К. І. Хмельницька. "Інструмент для обробки складнопрофільних поверхонь." Thesis, Видавництво СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/11355.
Full textСкріпченко, Наталія Борисівна. "Контактна взаємодія складнопрофільних деталей машинобудівних конструкцій з урахуванням локальної податливості поверхневого шару." Thesis, ФО-П Дуюнова Т. В, 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/19907.
Full textThe thesis in qualification for a scientific degree of Candidate of Technical Science in speciality 05.02.09 - dynamics and strength of machines, National Technical University "Kharkiv Polytechnical Institute", Kharkiv, 2016. The thesis is devoted to development of approaches, methods and models for analysis of stress-strain state of complex-shaped bodies with account for their contact over rough surfaces. In the present work the contact problem is solved for complex-shaped elements of engineering structures with local compliance of the surface layer. For this purpose a variation to the boundary integral equations method extended with a Winkler-type model of elastic layer is proposed. The resulting approach combines in a unified formulation the "local" and "global" compliance characteristics of the contacting rough bodies. The numerical implementation of the boundary element method is included in a software-and-model complex for analysis of contact interaction of complex-shaped bodies. A number of applied contact problems is solved. Namely, the influence of the gap and rough layer compliance on the contact pressure distribution is studied for the following cases: contact of a rectangular round-end stamp with a flat surface, junction of a rolling bearing and a modified double-radius roller, normal traction between spherical pistons and treadmills of a tank transmission. Numerical results of the research are compared to experimental data. Accuracy and reliability of the proposed methods and models, as well as special-purpose software-andmodel complex are confirmed.
Степанов, Дмитро Миколайович. "Технологічні особливості забезпечення якості та продуктивності обробки складнопрофільних і тонкостінних деталей полімерно-абразивними інструментами." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/42526.
Full textThesis for the scientific degree of the Candidate of Technical Science in specialty 05.02.08 − Manufacturing Engineering − National Technical University "Kharkiv polytechnic institute", Ministry of Education and Science of Ukraine, Kharkiv, 2019. The thesis is devoted to the solution of the important scientific and technical problem of technological provision of improving the quality of the machined surfaces of complex profile and thin-walled parts, which predominate in aviation-building, medical, instrument-making and other industries, and improving the productivity of the finish stage of the technological process of manufacturing such parts with brush polymer-abrasive tools. For the first time in the thesis, mathematical models of temperature and force influence on the treated surface were experimentally confirmed. It is proposed to combine polymer-abrasive brushes (PAB) of different types both sequentially and simultaneously to achieve the required quality and high performance. A method for determining the softening and melting temperature of fibers is proposed to regulate the temperature limitation of brush tools, which allows them to remain in working condition. The conditions of force interaction in the processing with polymer-abrasive brushes are substantiated. Theoretical and practical principles of the method of machining using the tool of rotational action on the basis of polymer-abrasive fibers are provided and substantiated with systematic analysis and generalization of experience of the finishing and repair of thin-walled and complex-profile details. The rational processing modes and regularities of quality parameters change for processing of parts from different materials with PAB were established on the basis of a complex study of the surface layer characteristics and the impact of technological factors on these characteristics in connection with a specific sequence of using of PAB with different parameters. Technological recommendations were developed to use PAB on various materials (steels, aluminum and alloys based on it, heat-resistant nickel and titanium alloys), for thin-walled and complex-profile parts made of the above mentioned materials and for repair production (removal of soot, thermal-covering, oxide films, etched layer and coatings of thin-walled parts of complex spatial forms and removal of burrs from complex-profile edges). In the first section: an analysis of the currently known methods and tools for finishing of thin-walled and complex parts was carried out. It has been established that the using of rotary brush tools based on polymer-abrasive fibers is a worthy alternative to other finishing tools. An analysis of the scientific literature about the study of the influence of various factors on the efficiency, productivity, quality of decoration and the PAB performance showed that information about them is general, sometimes contradictory. Some theoretical calculations do not have the necessary experimental confirmation. There are no detailed recommendations on the using of PAB for processing thin-walled parts or certain hard-to-handle materials, and detailed studies the of the surface layer properties of parts after finishing with PAB because that PAB appeared on the tool-market relatively recently. It was established that further study of PAB is necessary from the point of view of processing thin-walled and complex-profile parts of made, including from hard-to-handle materials, due to the lack of technical and technological information. The main objectives of the research were formulated and the structural-logical scheme of the thesis was developed. The second section is devoted to the description of the main methodological methods for studying the parameters of surface quality and the surface layer properties of the after finishing with PAB, sketching of test samples, as well as the basic conditions of the experiments, equipment, materials and types of PAB. The proposed method for restoring the cutting properties of such tools makes it possible to profile PAB. The study of the surface pattern treated on a transverse feed showed differences in the obtained post-contact zones on the samples when comparing the interaction of abrasive particles which were fixed rigidly and elastically. The developed "PAB-sample" interaction methodology in the ANSYS LS-DYNA dynamic module made it possible to analyze the influence of PAB parameters and processing modes on the stress-strain state of the sample. In the third section: The second section The study of the influence of the processing modes and conditions, and PAB parameters on the resulting surface roughness made it possible to determine the rational processing conditions and PAB parameters (length L and diameter d of fibers, abrasive material and his grit F, feed S, tightness i, speed V and the number of double moves N, cutting lubricant) in accordance with the intended purpose of finishing for samples from various materials, as well as for combined processing with PAB. The presence of a hardening effect when processing with disk PAB in rational modes is established. In particular, there are the favorable properties of the surface layer to a depth of 20...50 μm: the degree of surface hardening reached 12...15%, compressive residual stresses -175...-40 MPa. The results of statistical calculating of the obtained data confirmed the previously assumed difference in the effect of PAB with different fiber length: short (L = 8 mm) and long (L = 32 mm) and helped to find out the modes which can significantly change the surface layer quality: tightness i, speed V, feed S. Assessment of the degree of surface impregnation with nonmetallic grains after PAB treatment showed that the low power and thermal effects of PA fibers are not sufficient for deep impregnating of abrasive grains or them particles into surface, so impregnation practically was not observed. Rational modes (V = 15...18 m/s, Spr = 1 m/min, i = 1.5...2 mm, N = 3...7) and parameters PAB (L = 30 mm an more, d = 1 mm) were installed for high-quality deburring and rounding of sharp edges of complex geometric shapes with disk PA brushes. In the fourth section: A device and method for determining critical softening and melting temperatures, which directly affect the healthy state of polymer-abrasive fibers, have been developed. The device has a simple design and allows to check the heat resistance of wires and fibers of different materials. The softening temperature of the studied PA fibers, made by various manufacturers, when the operational properties of the fibers are reduced, was 55…120 °C. Alike technique and device was developed to measure the temperature in the contact zone of the brush and the sample during processing. Limitations of processing conditions and parameters of PAB are defined for materials having different thermo-physical properties (steel, aluminum, titanium and nickel alloys). A low level of thermal effect on the sample (less than 80 °C) is confirmed by the application of rational treatment conditions and modes. The radial force of the first impact of a single fiber was determined upon contact with the sample using analytical calculations, computer simulations, and experimental studies. It amounted to 0.65...1.3 N, which with a concentrated local impact is sufficient to obtain a hardening effect. The original dynamometer is designed to measure the forces acting on the sample during processing with PAB. Its special value is the definition of variable efforts, especially those that change at short intervals. It is proved that processing in various modes with disk PAB does not have a significant force effect on the sample surface (does not exceed 100 N), therefore this type of finishing can be recommended for thin-walled parts. In the fifth section: Original special and universal devices are designed to fix GTE details of a specific shape and process them with PA brushes. The developed technological recommendations for the using PAB for finishing thin-walled complex parts from various materials, including hard-to-handle materials, can be included without modification of technological processes in the manufacturing and repair of disks and blades of a gas turbine engine, gears, sprockets, cases, radiators, etc., in order to increase the efficiency of their processing. The using PAB for finishing the studied complex-profile and thin-walled parts reduces the processing time by 2...10 times, the cost of operations by 2...4 times. Also, most of the operations were mechanized. It allowed to completely abandon manual labor or significantly reduce its share of the total duration of the finishing stage of manufacturing or repair of parts.
Степанов, Дмитро Миколайович. "Технологічні особливості забезпечення якості та продуктивності обробки складнопрофільних і тонкостінних деталей полімерно-абразивними інструментами." Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/42525.
Full textThesis for the scientific degree of the Candidate of Technical Science in specialty 05.02.08 - Manufacturing Engineering - National Technical University "Kharkiv polytechnic institute", Kharkiv, 2019. The thesis is devoted to the solution of the important scientific and technical problem of technological provision of improving the quality of the machined surfaces of complex profile and thin-walled parts, which predominate in aviation-building, medical, instrument-making and other industries, and improving the productivity of the finish stage of the technological process of manufacturing such parts with brush polymer-abrasive tools. For the first time in the thesis, mathematical models of temperature and force influence on the treated surface were experimentally confirmed. It is proposed to combine polymer-abrasive brushes (PAB) of different types both sequentially and simultaneously to achieve the required quality and high performance. A method for determining the softening and melting temperature of fibers is proposed to regulate the temperature limitation of brush tools, which allows them to remain in working condition. The conditions of force interaction in the proces sing with polymer-abrasive brushes are substantiated. Theoretical and practical principles of the method of machining using the tool of rotational action on the basis of polymer-abrasive 23 fibers are provided and substantiated with systematic analysis and generalization of experience of the finishing and repair of thin-walled and complex-profile details. The rational processing modes and regularities of quality parameters change for processing of parts from different materials with PAB were established on the basis of a complex study of the surface layer characteristics and the impact of technological factors on these characteristics in connection with a specific sequence of using of PAB with different parameters. Technological recommendations were developed to use PAB on various materials (steels, aluminum and alloys based on it, heat-resistant nickel and titanium alloys), for thin-walled and complex-profile parts made of the above mentioned materials and for repair production (removal of soot, thermal-covering, oxide films, etched layer and coatings of thin-walled parts of complex spatial forms and removal of burrs from complex-profile edges).
Колос, В. О. "Інтенсифікація механічного оброблення деталей типу кронштейнів." Master's thesis, Сумський державний університет, 2019. http://essuir.sumdu.edu.ua/handle/123456789/75618.
Full textПояснительная записка выполнена на 106 стoринках машинного текста и включает 30 рисунков, 18 таблиц, 99 использованных источников. Целью работы является повышение эффективности механической обработки деталей типа кронштейнов за счет интенсификации ТП и внедрение гибких ОП, способных обеспечить многокоординатного обработку. Объект исследования: технологический процесс механической обработки деталей типа кронштейнов. Предмет исследования: станочный устройство для механической обработки деталей типа кронштейнов. Научная новизна заключается в следующем: – разработаны проблемно-ориентированную классификацию деталей типа кронштейнов, основанная на взаимосвязи между конструкторскими и технологическими параметрами деталей, которое предоставило дальнейшего развития процесса поиска компоновок ОП для заданных производственных условиях при автоматизированном проектировании технологической оснастки; – получил дальнейшее развитие подход многокоординатного обработки деталей базируется на интенсификации ТП, обеспечивая повышение производительности обработки, сокращения затрат времени на технологическую подготовку производства, а также количества средств оснащения при соблюдении заданной точности обработки; – на основе исследований доказана возможность интенсификации механической обработки деталей типа кронштейнов и работоспособность предложенной конструкции гибкого ОП, которая обеспечивает высокую степень гибкости, необходимую жесткость системы «ВП – заготовка» и позволяет получить заданную точность обработки. Практическое значение полученных результатов отражено в том, что разработана инженерная методика кодирования деталей типа кронштейнов, основанный на конструкторско-технологическим параметрам деталей и может быть введена в системах автоматизированного проектирования ИП. Разработаны конструкторско-технологическую документацию на изготовление гибкого ОП, позволяет реализовать многокоординатного обработки деталей типа кронштейнов.
The explanatory note is made on 106 pages of machine text and includes 30 figures, 18 tables, 99 sources used. The aim of the work is to increase the efficiency of machining parts such as brackets due to the intensification of the technological process and the introduction of flexible machine tools that can provide multi-axis processing. Object of study: the technological process of machining parts for brackets. Subject of study: machine tool for machining parts for brackets. The scientific novelty of the results is as follows: – problem-oriented classification of details of the type of brackets, based on the relationship between the design and technological parameters of the parts; – the approach of multi-coordinate machining of parts based on the intensification of TP has been further developed, providing improved processing productivity; – оn the basis of the researches the possibility of intensification of the mechanical processing of details of the type of brackets and the efficiency of the proposed design of flexible machine tool. The practical significance of the obtained results is reflected in the fact that an engineering method of coding parts of the type of brackets is developed, based on the design and technological parameters of the parts and can be implemented in systems of computer-aided design. The design and technological documentation for the production of flexible machine has been developed, which allows to realize multi-coordinate processing of details of the type of brackets.