ЗАБЕЗПЕЧЕННЯ ЯКОСТІ ТА ДОВГОВІЧНОСТІ ЗУБЧАСИХ КОЛІС ШЛІФУВАННЯМ КРУГАМИ ІЗ КУБІЧНОГО НІТРИДУ БОРУ
Tooth grinding is one of the methods of finishing gear wheels. The question of ensuring the quality and durability of gears due to the use of cubic boron nitride (CBN) grinding wheels is considered. Compared to grinding with different types of electrocorundum circles. Experimental studies of the gea...
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| Date: | 2025 |
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| Main Author: | |
| Format: | Article |
| Language: | Ukrainian |
| Published: |
Институт сверхтвердых материалов им. В. Н. Бакуля Национальной академии наук Украины
2025
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| Subjects: | |
| Online Access: | http://altis-ism.org.ua/index.php/ALTIS/article/view/385 |
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| Journal Title: | Tooling materials science |
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Tooling materials science| Summary: | Tooth grinding is one of the methods of finishing gear wheels. The question of ensuring the quality and durability of gears due to the use of cubic boron nitride (CBN) grinding wheels is considered. Compared to grinding with different types of electrocorundum circles. Experimental studies of the gear grinding process were carried out on a gear grinding machine model 5851. The evaluation of the quality of gear processing was carried out according to several criteria. The study of the structure of the surface layer of gears was carried out using a complex methodology, which includes metallographic and X-ray structural analysis and the study of residual stresses.
Due to the difficulties of assessing the durability of gear wheels after grinding with CBN wheels in real conditions, these studies were carried out by checking the wear resistance of gear wheel samples after grinding with different grinding wheels.
The analysis of the grinding results showed that the surface layer of the teeth with a microstructure that practically does not differ from the structure of the deep layers of the metal is formed during the final grinding with CBN wheels. After grinding, significant compressive stress occurs in the thin surface layer of the gears.
The wear resistance of gear wheel samples after grinding with wheels from CBN with cooling is significantly higher compared to samples ground with wheels from CBN without cooling.
The processing of gear wheels with grinding wheels made of CBN, in comparison with wheels made of electrocorundum, helps to increase their operational properties.
Key words: grinding, gear wheels, CBN wheels, quality, durability, wear resistance. |
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