Thread-Cutting Peculiarities in Holes With Ultra-Small Diameters

ПОВЫШЕНИЕ НАДЁЖНОСТИ ПРОЦЕССА РЕЗЬБОНАРЕЗАНИЯ В ОТВЕРСТИЯХ СВЕРХМАЛЫХ ДИАМЕТРОВРассмотрены особенности процесса резьбо-нарезания в отверстиях сверхмалого диаметра (d ≤ 1,4), влияние диаметра на закономерности обработ-ки и стружкообразования. Выявлены причины низ-кой надёжности резьбонарезания и пути ее повы-шения.Ключевые слова: нарезание резьбы, сверх-малый диаметр, тонкое точение, сечение стружки, формирование момента резания. M.Yu. Kulikov, M.V. Yagodkin RELIABILITY INCREASE OF THREAD CUTTING IN SUPERSMALL HOLESThe paper reports the peculiarities of thread cutting in holes of super-small diameter (d ≤ 1.4), the impact of a diameter upon regularities of machining and chip formation. The reasons of low thread cutting reliability and the ways for its increase are revealed.

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Reliability Increase of Thread Cutting in Supersmall Holes

Куликов¹,

Ягодкин²,

Yagodkin

2017

Bulletin of Bryansk State Technical University

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Investigation of Combined Method Use for Copper and Aluminum Alloy Processing

Inozemtsev¹

2020

Bulletin of Bryansk State Technical University

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The work purpose: the investigation of obtaining by a surface the required properties and possibility degree to control shaping processes. It is well-known that a shaping process is affected by many factors particularly at complex methods of processing. The analysis of machining condition impact upon surface layer quality of parts allows defining optimum parameters of cutting and increasing parts operation characteristics. Investigation methods: theory, experimental researches, statistical processing of results, mathematical modeling, analysis. Research results: there are defined criteria of surface quality at complex methods of shaping, roles of factors included in processing, mathematical models are formed, recommendations are formulated. Novelty: it consists in the definition of regularities in pore covering at metal ceramic finish machining and definition of processing conditions impact upon pore covering, and also in the definition of efficient conditions of aluminum alloy finishing at the combined method of shaping. Conclusions: as the investigations carried out show the combined methods of impact upon a surface at parts shaping allow reducing also cutter wear, minimizing collateral processing factors connected with heat generation, with increased friction forces and surface layer deformation of a billet at its processing. The combination of machining with electro-chemical processing allows not only having an influence considerable upon surface quality increase, but decreasing technological residual stresses and also contributing to the restoration of mechanical and physical properties of metal surfaces after electro-erosion processing at the expense of surface micro-layer elimination with the acquired thermal changes of structures.

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Investigation of Sots and Amo Impact Upon Thread-Cutting Reliability in Ultra-Small Holes

Куликов¹,

Ягодкин²,

Yagodkin

et al. 2018

Bulletin of Bryansk State Technical University

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Изучен процесс нарезания резьбы в отверстиях сверхмалого диаметра (d ≤ 1,4 мм). Показано, что в процессе обработки существует большая вероятность поломки режущего инструмента, которая приводит к возникновению брака. Установлено влияние конструкторских особенностей отверстия на поломку инструмента и степень его изнашива-ния. Показано влияние СОТС и анодномеханической обработки (АМО) на надёжность процесса резьбонарезания. Ключевые слова: нарезание резьбы, сверхмалый диаметр, надёжность процесса, количество отказов, СОТС, АМО.

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Thread-Cutting Peculiarities in Holes With Ultra-Small Diameters

Cited by 6 publications

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Reliability Increase of Thread Cutting in Supersmall Holes

Reliability Increase of Thread Cutting in Supersmall Holes

Investigation of Combined Method Use for Copper and Aluminum Alloy Processing

Investigation of Sots and Amo Impact Upon Thread-Cutting Reliability in Ultra-Small Holes

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