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ЭНЕРГЕТИЧЕСКИЕ АСПЕКТЫ ВИБРООБРАБОТКИ ДЕТАЛЕЙ КОСТОЧКОВЫМИ ОРГАНИЧЕСКИМИ СРЕДАМИНа основании анализа подходов к моделиро-ванию процессов виброотделки гранулированными средами для описания процесса обработки средами органического происхождения предложен подход, рассматривающий энергетическое воздействие по-тока гранул на обрабатываемую поверхность без учёта явлений, обусловленных деформационно-упрочняющим эффектом. Разработана модель про-цесса виброобработки, обеспечивающая эффектив-ную отделку поверхностей деталей средами орга-нического происхождения.Ключевые слова: виброобработка, косточ-ковая органическая среда, удельный металлосъём, давление среды, пороговая амплитуда колебаний, пороговая частота колебаний, высота загрузки, от-делка поверхности.A.P. Shishkina, V.A. Lebedev, M.M. Chaava ENERGY ASPECTS OF PARTS VIBRATING PROCESSING WITH KERNEL ORGANIC ENVIRONMENTThis paper reports the fulfilled analysis of approaches to the simulation of the processes of a vibration treatment with granulated media. A model of the vibration treatment process ensuring an efficient finishing of parts surfaces with granules of kernel organic media is developed the basis of which is formed by the approach based on an energetic impact of a granule flow upon the surface under treatment. As a basic characteristic of the process of the organic media treatment a specific volume metal removal is used a physical sense of which consists in the velocity of a thickness growth of material removed from the surface at specified velocity and medium pressure. It is shown that metal removal depends upon the velocity of medium flow, the height of a loading column of granulated medium and conditions of the formation of a medium stationary circulating motion. On the basis of the analysis of experimental investigations results of amplitudefrequency characteristics influence upon metal removal during the vibrating processing with abrasive granules the dependence of a specific volume metal removal is offered at the treatment with organic media, taking into account a threshold amplitude and oscillation frequency of the working chamber at which the effect of a surface treatment is observed. The defined aggregate of dependences, describing the efficient conditions of vibrating processing with kernel organic media, is obtained with the application of experimental data which allows supposing the reasonableness of the model obtained.Key words: vibrating processing, kernel organic medium, specific metal removal, environment pressure, threshold amplitude of oscillations, threshold frequency of oscillations, loading height, surface finishing. ВведениеОрганические среды представляют собой самостоятельную группу обрабаты-вающих сред, применение которых в тех-нологии изготовления деталей машин расширяет спектр технологических воз-можностей вибрационной обработки и по-вышает её эффективность. Однако недос-таточная изученность этих сред, отсутст-вие методик проектирования отделочных операций с их использованием ограничи-вает область их технологического приме-нения. В ...
Институт машиноведения РАН, г. Москва Кандидат технических наук Старший научный сотрудник лаборатории механики термоциклического разрушения Телефон: (909) 969 78 02 Хасьянова Динара Усмановна Институт машиноведения РАН, г. Москва Кандидат технических наук Старший научный сотрудник лаборатории узлов трения для экстремальных условий Телефон: (903) 556 17 60
The article discusses the features of the granu-lometric characteristics of processing media made from natural materials and their influence on the quality of finishing processing of parts of electronic equipment under vibration processing conditions. It is shown that the presence of wedge-shaped tops, different in size and angular position relative to each other, makes it possible to consider the granule as a tool that performs cutting and has access to various surfaces of the workpiece. Recommendations for the selection of the granulometric characteristics of the pro-cessing media are offered.
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