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Journals / Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi / 2018 / Cilt: 33 - Sayı: 2

Determination of tool point FRF of micro tools under operational conditions using analytical methods

Mikro takımların operasyon şartları altındaki uç nokta FTF’lerinin analitik yöntemler kullanılarak belirlenmesi

Orkun ÖZŞAHİN
Pages
529–539
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Moreover, for the machining centers where spindle geometry is unknown, a new coupling method is proposed which enables to couple experimentally obtained idle spindle dynamics with analytically calculated rotating holder-tool dynamics.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Tool point Frequency Response Function (FRF) for micro tools cannot be measured using impact testing and modal analysis.
📊
Key Findings & Data:In addition, micro machining operations are performed at high spindle speeds and due to the gyroscopic moments and centrifugal forces tool point FRF changes during machining operations.
💡
Conclusion & Impact:Moreover, for the machining centers where spindle geometry is unknown, a new coupling method is proposed which enables to couple experimentally obtained idle spindle dynamics with analytically calculated rotating holder-tool dynamics.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Tool point Frequency Response Function (FRF) for micro tools cannot be measured using impact testing and modal analysis. In addition, micro machining operations are performed at high spindle speeds and due to the gyroscopic moments and centrifugal forces tool point FRF changes during machining operations. In this study, micro tools are modeled analytically including the fluted geometry of the tool and operational effects. Moreover, for the machining centers where spindle geometry is unknown, a new coupling method is proposed which enables to couple experimentally obtained idle spindle dynamics with analytically calculated rotating holder-tool dynamics.

Özet

Mikro takımların uç nokta Frekans Tepki Fonksiyonları (FTF) darbe testi ve modal (biçim) analizi vasıtasıile belirlenememektedir. Ayrıca, mikro işlemler yüksek hızlarda gerçekleştirilmekte ve jiroskopik momentlerve merkezkaç kuvvetleri nedeniyle takım uç nokta FTF’sinde değişimler meydana gelmektedir. Buçalışmada, mikro takımlar kesici uç geometrisini ve operasyon etkilerini içerecek şekilde analitik olarakmodellenmiştir. Ayrıca, iş mili geometrisinin bilinmediği durumlar için deneysel olarak elde edilen durağaniş mili dinamiği ve analitik olarak hesaplanan dönen takım ve tutucu dinamiğinin birleştirilmesini mümkünkılan yeni bir yöntem geliştirilmiştir.

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Cite This Article

ÖZŞAHİN, O. (2022). Determination of tool point FRF of micro tools under operational conditions using analytical methods. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, Cilt: 33 - Sayı: 2, 529–539. https://ajindex.com/articles/523529

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References (15)

  1. Özşahin O., Özgüven H.N., Budak E., Analytical modeling of asymmetric multi-segment rotor–bearing systems with Timoshenko beam model including gyroscopic moments, Computers & Structures, 144, 119-126, 2014.
  2. Özşahin O., Altıntaş Y., Tool point FRF calculation of spindle – holder – tool assemblies with asymmetric tools, International Journal of Machine Tools and Manufacture, 92, 31-40, 2015.
  3. Kıvanç E.B., Budak E., Structural modeling of end mills for form error and stability analysis, International Journal of Machine Tools and Manufacture, 44, 1151- 1161, 2004.
  4. Mamedov A., Layegh K., Ehsan S., Lazoğlu I., Instantaneous tool deflection model for micro milling, The International Journal of Advanced Manufacturing Technology, 79, 769-777, 2015. Rodríguez P., Labarga J.E., Tool deflection model for micromilling processes, The International Journal of Advanced Manufacturing Technology, 76, 199-207, 2014.
  5. Dow T.A., Miller E.L. Garrard K., Tool force and deflection compensation for small milling tools, Precision Engineering, 28, 31-45, 2004.
  6. Bediz B., Kumar U., Schmitz T., Özdoğanlar B., Modeling and experimentation for three-dimensional dynamics of endmills, International Journal of Machine Tools & Manufacture, 53, 39-50, 2012.
  7. Filiz S., Özdoğanlar B., A three-dimensional model for the dynamics of micro-endmills including bending, torsional and axial vibrations, Precision Engineering, 35, 24-37, 2011.
  8. Park S.S., Rahnama R., Robust chatter stability in micro-milling operations, CIRP Annals, 59, 391-394, 2010.
  9. Malekian M., Park S., Jun M.B.G., Modeling of dynamic micro milling forces, International Journal of Machine Tools and Manufacture, 49, 589-598, 2009.
  10. Jun M.B.G., Goo C., Malekian, M., Park, S., A new mechanistic approach for micro end milling modeling, ASME Journal of Manufacturing Science and Engineering, 134, 2012.
  11. Mascardelli B., Park S., Freiheit T., Substructure Coupling of Microend Mills to Aid in the Suppression of Chatter, ASME Journal of Manufacturing Science and Engineering, 130, 2008.
  12. Bediz B., Gozen A.B., Emrullah K., Özdoğanlar B., Dynamics of ultra-high-speed (UHS) spindles used for micromachining, International Journal of Machine Tools and Manufacture, 87, 27-38, 2014.
  13. Jin X., Altıntaş Y., Chatter Stability Model of MicroMilling With Process Damping, ASME Journal of Manufacturing Science and Engineering, 135, 2013.
  14. Altıntaş Y., Jin X., Mechanics of Micro-Milling with Round Edge Tools, Annals of CIRP, 60(1), 77-80, 2011.
  15. Filiz S., Özdoğanlar B.,