Development of technological restrictions when operating disc polymer-abrasive brushes
| Autor: | Pavlo Tryshyn, Natalia Honchar, Eduard Kondratiuk, Dmytro Stepanov |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
polymer-abrasive disc brush
Materials science 020209 energy 0211 other engineering and technologies Energy Engineering and Power Technology Anchoring Mechanical engineering 02 engineering and technology cyclical durability Industrial and Manufacturing Engineering law.invention Machining law Management of Technology and Innovation 021105 building & construction 0202 electrical engineering electronic engineering information engineering T1-995 Industry Fiber Electrical and Electronic Engineering Technology (General) fiber detachment Tension (physics) Applied Mathematics Mechanical Engineering Abrasive Process (computing) Brush HD2321-4730.9 Durability Computer Science Applications Control and Systems Engineering fiber temperature |
| Zdroj: | Eastern-European Journal of Enterprise Technologies, Vol 6, Iss 1 (108), Pp 27-33 (2020) |
| ISSN: | 1729-4061 1729-3774 |
| DOI: | 10.15587/1729-4061.2020.212820 |
| Popis: | Polymer-abrasive brush rotating tools are increasingly used for finishing operations in automated manufacturing. Given this, studying the process of their fibers’ wear has become important; and such a type of wear as the detachment of a whole fiber at the point of fixing has not been investigated in detail up to now. This phenomenon can lead to the disruption of stable equipment operation and the catastrophic wear of brushes. Therefore, it is a relevant task to search for and identify those limitations that could prevent fibers from detachment. This study involved the disc and cylindrical polymer-abrasive brushes as the most common in production. The current study has established that the detachment occurs at an unfavorable combination of the processing regimes and brushes’ parameters at rotations close to the limits specified by the manufacturer. When checking the temperature level at the fiber anchoring point, it was determined that the heating of the fibers in this region during operation was not enough to melt the polymeric base of the fibers and detach them. It has been established that the reason for the detachment of fibers is the accumulation of fatigue changes, which significantly accelerate under the limit modes. Studying the cyclical durability of fibers has made it possible to determine the ratios of critical processing modes to the tool parameters, which lead to the fatigue destruction of fibers at their fixing point. The following technological restrictions have been defined to warrant that fibers are not detached: ‒it is not recommended to use circumferential cutting speeds exceeding 40m/s; ‒the tension during operation should not exceed 10% of the fibers’ overhang magnitude. These limitations ensure the integrity of the tool, its high durability, as well as the stability of the process of parts’ finishing machining under an automated mode |
| Databáze: | OpenAIRE |
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