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Prospects for the application of drills with discretely modified working surfaces to ensure the quality of holes in parts made of fiber polymer composite materials

Prospects for the application of drills with discretely modified working surfaces to ensure the quality of holes in parts made of fiber polymer composite materials

Abstract

The issue of using a cutting tool with modified working surfaces in the form of discrete areas for processing parts made of fiber polymer composite materials (FPCM) has not been studied enough to date.One of the main parameters that affects the quality of the machined surface of the FPCM part is the temperature that occurs in the cutting zone.According to scientific research, one of the ways to improve the quality of cutting is to reduce the contact time of the cutting edge with the FPCM material being processed.The concept proposed in the work is that when using a cutting tool with modified working surfaces in the form of discrete areas with regularly located globules on them, which are cutting elements, due to the discretization of the working surface, the process becomes intermittent cutting, i.e. the contact time of the cutting edge with the surface of FPCM is reduced, which, in turn, allows to improve the quality of the processed surface of the product.To confirm this hypothesis, a number of experiments were conducted, the results of which showed a decrease in the thickness of the defective layer compared to the recommended tool.

Питання використання різального інструменту з модифікованими робочими поверхнями у вигляді дискретних ділянок для обробки деталей із волокнистих полімерних композиційних матеріалів (ВПКМ) на сьогодні недостатньо вивчене. Одним з основних параметрів, що впливає на якість обробленої поверхні деталі з ВПКМ являється температура, що виникає в зоні різання. За даними наукових досліджень одним зі шляхів підвищення якості обробки різанням є зменшення часу контакту різальної кромки з оброблюваним матеріалом ВПКМ. Запропонована в роботі концепція,що при використанні різального інструменту з модифікованими робочим поверхнями у вигляді дискретних ділянок з регулярно розташованими на них глобулами, що являють собою різальні елементи, за рахунок дискретизації робочої поверхні процес являється переривчастим різанням, тобто час контакту різальної кромки з поверхнею ВПКМ зменшується, що в свою чергу дозволяє підвищити якість обробленої поверхні виробу. Для підтвердження цієї гіпотези проведено відповідні експерименти, результати яких показали зменшення товщини дефектного шару в порівняні зрекомендованим для використання інструментом.

Keywords

процес різання; волокнисті полімерні композитні матеріали (ВПКМ); покриття дискретної структури, якість поверхні, дефектний шар, cutting process; fiber polymer composite materials (FPCM); discrete structure coverage, surface quality, defective layer

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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