Increase of efficiency of finishing-cleaning and hardening processing of details based on rotor-screw technological systems

Lebedev, Valeriy; Serga, G. V.; Khandozhko, Alexandr

doi:10.1088/1757-899x/327/4/042062

Cited by 21 publications

(8 citation statements)

References 1 publication

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“…Выбор характеристик обрабатывающей среды в данном случае оказывает решающее влияние на качество поверхности деталей и производительность процесса [5][6][7]. На предприятиях применяют рабочие среды, гранулы которых можно классифицировать по геометрической форме и размерам, материалу и размеру режущих зерен, материалу связки зерен, структуре и способу производства.…”

Section: Advanced Engineeringunclassified

“…Учитывая эти требования и данные работ [10,11], следует признать наиболее целесообразным использование косточковых гранулированных сред. При дроблении косточек плодовых культур и скорлупы грецкого ореха образуются гранулы произвольных форм с краями в виде клина, благодаря которому гранула становится аналогом режущего инструмента.…”

Section: Advanced Engineeringunclassified

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Rationale for granulometric medium characteristics under vibration processing of parts with small grooves and holes

Tamarkin

Kolganova

Yagmurov

2020

Advanced Engineering Research

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Introduction. The design technique for a highly efficient technological process of vibration finishing of parts with small grooves and holes is presented. The decision is based on the selection of the granulometric characteristics of the processing environments. The cross-sectional shape and geometrical dimensions of burrs on typical parts of radio electronic equipment (REE) are analyzed. A generalized burr model has been developed. Methodological principles for the selection of particle size characteristics of operating environments are determined. Materials and Methods. The new classification and coding according to the constructive and technological principles of REE components will provide reasonable selection of the equipment, environments and modes when designing their finishing process. Results. A technique has been developed for selecting the granulometric characteristics of operating environments with the account of the major technological problems. Based on the design and technological features of the REE components, the dependences are proposed for determining the size and shape of the processing granules. The acceptance criteria for evaluating the results of vibration processing are determined. It is noted that one of the major tasks in the vibration processing of parts with small grooves and holes is to provide such in-process time at which burrs are removed, and the roughness and other surface parameters meet the technical requirements. In this case, the accuracy of the linear dimensions of the processed surfaces should be considered an indicator of quality. Quantitatively, this criterion is assessed on a specific index whose calculation considers the largest actual size before vibration processing, the burr height, the smallest allowable size after processing, and the tolerance established by the technical requirements. The process efficiency criterion is defined as the ratio of the machinability index to the processing time of a batch of parts or the cycle time per part. The proposed criterion enables to compare treatment processes under validating the solution to technological problems. Discussion and Conclusions. The study results enable to confirm that vibration processing in the organic environment contributes to the effective removal of burrs and edge smoothing of small-sized parts of electronic equipment with small grooves and holes.

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Section: Advanced Engineeringunclassified

Rationale for granulometric medium characteristics under vibration processing of parts with small grooves and holes

Tamarkin

Kolganova

Yagmurov

2020

Advanced Engineering Research

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“…Such cycloidal screw surfaces are one of the most labor-intensive surfaces to manufacture. The processing of these surfaces using modern computer numerical control (CNC) equipment can significantly reduce the labor intensity of technological preparation of production in comparison with methods based on the use of profiled tools, in which the shaping of the surface occurs by copying [3,4,5].…”

Section: Introductionmentioning

confidence: 99%

Technological Capabilities of a Special Strategy for Processing Cycloidal Helical Surfaces with a Non-Profiled Tool

Гончаров¹,

Vasiliev²

2021

Preprint

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The working bodies of screw volumetric machines are complex-profile cycloidal screw surfaces. This article deals with the problem of technological preparation for the production of such surfaces, associated with the uncertainty of the technological capabilities of a special processing strategy. To solve this problem, an analytical expression of the criterion was proposed, which makes it possible to assess the applicability of the processing strategy for the given geometric parameters. The adequacy of the proposed criterion is confirmed by machine and natural experiments.

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“…The disadvantages of such kilns are, as a rule, not only the failure to provide the necessary heat treatment conditions, the long length of the kiln shell to ensure complete rolling of the pellets to improve the quality of the expanded clay, but also limited technological capabilities, as well as the fact that the kiln shell is set at an angle to the axis of rotation, requires additional devices to keep the entire mass of the rotating kiln in this inclined state. This complicates the operation and increases costs [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Rotary-screw systems for rotary kilns

Секисов

Serga

2019

E3S Web Conf.

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The proposed paper examines rotary-screw systems for rotary kilns in the production of expanded clay. To reduce the size, reduce weight, increase productivity, simplify operation, reduce energy consumption in the production of expanded clay, the shell is made screw-shaped and mounted horizontally. Technical solutions protected by six patents of the Russian Federation are proposed, the structures of the shells of rotary kilns are shown, which, in comparison with the known structures of similar purpose, are made screw-shaped with internal spiral grooves. The dependence is proposed for determining the speed of movement of expanded clay pellets in a screw-shaped shell of a rotary kiln. A classification of rotary-screw systems for the production of expanded clay was developed.

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Increase of efficiency of finishing-cleaning and hardening processing of details based on rotor-screw technological systems

Cited by 21 publications

References 1 publication

Rationale for granulometric medium characteristics under vibration processing of parts with small grooves and holes

Rationale for granulometric medium characteristics under vibration processing of parts with small grooves and holes

Technological Capabilities of a Special Strategy for Processing Cycloidal Helical Surfaces with a Non-Profiled Tool

Rotary-screw systems for rotary kilns

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