REDUCTİON OF SHAKİNG FORCES OF CNC CUTTİNG MACHİNE MAİN MOTİON SYSTEM AND STRUCTURAL ANALYSİS OF CONNECTİNG ROD

Yıl 2023, Cilt: 11 Sayı: 4, 1580 - 1593, 30.12.2023

Gürcan Atakök , Sezgin Balci

https://doi.org/10.21923/jesd.950247

Öz

Cutter systems and other motion systems designed by taking advantage of the crank-connecting rod mechanisms find a wide range of uses. In order to increase the cutting performance of the CNC cutting machine, which is designed to cut multi-ply textile products, it is necessary to increase the speed. However, the increase in speed brings along dynamic balancing problems in rotating mechanisms. In this study, a mechanism that can cut at speeds of 6000 rpm was designed and modeled in CAD program, balancing work for reducing shaking forces was made and analyzed in engineering simulation program. The results show that the balancing weight reduces the shaking forces in critical bearings.

Anahtar Kelimeler

CNC Cutting Machine, Crank-Connecting Rod, Mass Balancing, Shaking Forces, Structural Analysis

CNC KESİM MAKİNESİ ANA HAREKET SİSTEMİNİN SARSMA KUVVETLERİNİN AZALTILMASI VE BAĞLANTI ÇUBUĞUNUN YAPISAL ANALİZİ

Öz

Krank-biyel mekanizmalarının avantajlarından faydalanılarak tasarlanan kesici sistemler ve diğer hareket sistemleri geniş bir yelpazede kullanım alanı bulmaktadır. Çok katlı serilen tekstil ürünlerini kesmek üzere tasarlanan CNC kesim makinesinin kesim performansının istenen seviyeye gelmesi için hızın artırılması gereklidir. Ancak hızın artması dönen mekanizmalarda dinamik dengeleme problemlerini de beraberinde getirir. Bu çalışmada 6000 d/dk. hızlarda kesim yapabilecek bir mekanizma CAD programında tasarlanıp modellenmiş; sarsma kuvvetlerinin azaltılmasına yönelik dengeleme çalışması da analiz programında test edilmiştir. Dengeleme ağırlığının, kritik rulmanlardaki sarsma kuvvetlerini düşürdüğü sonucu elde edilmiştir.

Anahtar Kelimeler

CNC Kesim Makinesi, Krank-Biyel, Kütle Dengeleme, Sarsma Kuvvetleri, Yapısal Analiz

Kaynakça

• Chaudhary K.and Chaudhary, H.(2014) Optimum Balancing of Slider-crank Mechanism Using Equimomental System of Point- masses, in 2nd International Conference on Innovations in Automation and Mechatronics Engineering, vol. 14, pp. 35– 42, doi: 10.1016/j.protcy.2014.08.006.
• Çetin, M. S. (2011). Bilgisayar destekli bıçaklı bir kesici sistemin çalışma prensibinin analizi, Dokuz Eylül Üniversitesi, İzmir, Türkiye.
• Dang H. M. et al.(2021), Development of a Generalized Mathematical Model for Slider-Crank Mechanism Based on Multiobjective Concurrent Engineering with Application, Arabian Journal for Science and Engineering, vol. 46, no. 8, pp. 8037–8053, doi: 10.1007/s13369-021-05627-2.
• Esendemir, Ü. & Karaca, H. (2019). DÜŞÜK HIZLI DARBE YÜKÜNE MARUZ KOMPOZİT PLAKALARA ASİDİK ORTAMIN ETKİSİ, Mühendislik Bilimleri ve Tasarım Dergisi , 7 (1) , 26-33 . DOI: 10.21923/jesd.402295
• Frantz, J. C. Mejia Rincon, L. Simas, H. and Martins, D. (2018) A new methodology for the balancing of mechanisms using the Davies method, in Mechanisms and Machine Science, Oct. vol. 54, pp. 203–212, doi: 10.1007/978-3-319-67567-1_19.
• Groza, D. (2016), Balancing of a Slider-Crank Mechanism by Using a Counter Mass and a Progressive Spring with Two Rates, Applied Mechanics and Materials, vol. 823, pp. 37–42, doi: 10.4028/www.scientific.net/amm.823.37.
• Groza, D. and Antonya, C. (2015) Dynamically Spring Balanced Slider-Crank Mechanism for Reciprocating Machines, International Journal of Mechanical Engineering, vol. 2, no. 6, pp. 22–26, doi: 10.14445/23488360/ijme-v2i6p109.
• Gülaçtı, S. & Durak, E. (2019). Beş Eksenli Köprü Tipi CNC Mermer İşleme Makinesi Tasarımı ve İmalatı, Mühendislik Bilimleri ve Tasarım Dergisi , 7 (2) , 282-293 . DOI: 10.21923/jesd.458118
• Halicioglu, R. Dulger, L. C. and Bozdana, A. T. (2016) Structural design and analysis of a servo crank press, Engineering Science and Technology, an International Journal, vol. 19, no. 4, pp. 2060–2072, doi: 10.1016/j.jestch.2016.08.008.
• Iancu, C. (2018) About Animation in Motion Studies in Solidworks, Fiabilitate Durabilitate, vol. 1, no. 21, pp. 228–231.
• Kaçal, A. Işık, A. and Erginli, M. (2003) Bilgisayar destekli rulman seçimi, Dumlupınar Üniversitesi Fen Bilimleri Dergisi, no. 4, pp. 239–254.
• Li, X. Chen, H. Ye, Z. Guo, H. and Zou, T. (2019).Dynamic balance optimization of the cutting head for flexible materials based on solidworks, UPB Scientific Bulletin, Series D: Mechanical Engineering, vol. 81, no. 3, pp. 3–14.
• Nedelcu, D. Gillich, G.-R. Biro, I. Korka, Z.-I. and Gerocs, A. (2019 ) The study of the punching cards mechanism with SolidWorks Motion, Analele Universitatii Eftimie Murgu, vol. 26, no. 1, pp. 181–190.
• Okabe, T. Hamahata, T. Iwabata, T. and Kajiyama, N. (2011) Vibration Reductien for Reciprocating Machine with Single-Slider- Crank Mechanism, in The Proceedings of Conference of Kyushu Branch, pp. 99–100.
• Pishvaye Naeeni, I. Keshavarzi, A.and Fattahi, I. (2019) Parametric Study on the Geometric and Kinetic Aspects of the Slider- Crank Mechanism, Iranian Journal of Science and Technology - Transactions of Mechanical Engineering, vol. 43, no. 3, pp. 405–417, doi: 10.1007/s40997-018-0214-5.
• Serkon, 2023. Serkon Makina Ürün Broşürleri, www.serkonmakina.com (accessed Oct. 07, 2023).
• Uicker, J. J. J. Pennock, G. R. and Shigley, J. E. (2017).Theory of Machines and Mechanisms, 5th ed. Oxford University Press.
• Vilumsone-Nemes, I. (2018) Automated cutting of textile materials, in Industrial Cutting of Textile Materials, 2nd ed., Elsevier Science, pp. 115–150.
• Vilumsone-Nemes, I. (2018) Automation in spreading and cutting, in Automation in Garment Manufacturing, Elsevier Ltd, pp. 139–164.
• Yang, C. Hao, Z. and Zheng, G. (2009). Balance Mechanism Design of Single Cylinder Engine Based on Continuous Mass Distribution of Connecting Rod, Transactions of Tianjin University, vol. 15, no. 4, pp. 255–259, doi: 10.1007/s12209-009- 0045-y.
• Yang, Z. Pan, X. Wang, Y. and Tang, W. (2018) Kinematics and dynamics analysis of the main motion system of reciprocating machine tools, IOP Conference Series:Materials Science and Engineering, vol. 394, no. 3, doi: 10.1088/1757- 899X/394/3/032067.
• Zotov, A. Sviridov, A. and Valeev, A. (2020). Stabilization of the Torque on the Shaft of a Statically Balanced Crank Mechanism, doi: 10.1109/DVM49764.2020.9243882.