| Autor: |
Vitalii Ivanov, Ruslan Matzey, Alexandr Orgiyan, Gennadiy Oborskyi, Anna Balaniuk |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
Lecture Notes in Mechanical Engineering ISBN: 9783030777180 |
| DOI: |
10.1007/978-3-030-77719-7_48 |
| Popis: |
In the process of fine boring of small-diameter holes (d = 10–20 mm), coupled flexural-and-torsional vibrations of boring cantilever bars are excited. It is of practical interest to study such vibrations during fine boring of long (or deeply located) holes with a ratio l/d > 3 (l – the length of a boring cantilever bar). In such cases, a coordinate relationship arises between the flexural and torsional forms. A number of experimental studies have been carried out to assess this relationship and the effect on the emergence of an increasing vibration level. The work studies the features of joint flexural-and-torsional vibrations, the relationship between amplitudes and frequencies, and vibration modes’ effect on the loss of vibration resistance. The experiments were carried out on a test bench assembled based on a finishing-boring machine. Measurements were made by strain and piezometric sensors. Samples of steel and cast iron were bored. The criterion for the cutter resharpening was the relative radial wear and the machined surface roughness. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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