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IJAT Vol.8 No.4 pp. 550-560
doi: 10.20965/ijat.2014.p0550
(2014)

Paper:

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Contributions of High-Speed Cutting and High Rake Angle to the Cutting Performance of Natural Rubber

Naoki Takahashi and Jun Shinozuka

Yokohama National University, 79-5 Tokiwadai, Hodogaya, Yokohama, Kanagawa 240-8501, Japan

Received:
March 30, 2014
Accepted:
May 14, 2014
Published:
July 5, 2014
Creative Commons License
Keywords:
high-speed cutting, natural rubber, viscous drag, cutting force, shape accuracy
Abstract
This study investigates the contributions of high-speed cutting and a high rake angle to the improvement of the cutting performance of natural rubber. Orthogonal cutting experiments were conducted at cutting speeds ranging from 1.0 m/s to 141.1 m/s. The rake angles examined were 0°, 20° and 50°. The following results were obtained from the experiments. The cutting ratio is almost 1.0 regardless of the cutting speed and rake angle. The cutting force rises rapidly as the cutting speed increases. High-speed cutting or a high rake angle eliminates tear defects on the machined surface and reduces chipping defects at the entry edge of the workpiece. An uncut portion, however, always remains at the exit edge. The cross-sectional shape of the machined surface becomes concave. Besides, the machined surface comes into broad contact with the clearance face. These degradations in the shape accuracy arise from the large elastic distortion that occurs in the shear zone. Increasing the cutting speed improves the flatness of the machined surface. Although an analysis of the cutting mechanism reveals that the apparent stiffness of the material in the shear zone is enhanced with increasing the cutting speed, a very high cutting speed worsens the shape accuracy because of the development of shock waves. Depending on the rake angle, there is a critical cutting speed that should not be exceeded to maximize the cutting performance of natural rubber.
Cite this article as:
N. Takahashi and J. Shinozuka, “Contributions of High-Speed Cutting and High Rake Angle to the Cutting Performance of Natural Rubber,” Int. J. Automation Technol., Vol.8 No.4, pp. 550-560, 2014.
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References
  1. [1] G. Heinrich, M. Kluppel, and T. A. Vilgis, “Reinforcement of elastomers,” Current Opinion in Solid State and Materials Science, Vol.6, pp. 195-203, 2002.
  2. [2] J.-H. Kim and H.-Y. Jeong, “A study on the material properties and fatigue life of natural rubber with different carbon blacks,” Int. J. of Fatigue, Vol.27, pp. 263-272, 2005.
  3. [3] L. Laiarinandrasana, A. Jean, D. Jeulin, and S. Forest, “Modelling the effects of various contents of fillers on the relaxation rate of elastomers,” Materials and Design, Vol.33, pp. 75-82, 2012.
  4. [4] H. Nabil, H. Ismail, and A. R. Azura, “Compounding, mechanical and morphological properties of carbon-black-filled natural rubber/recycled ethylenepropylene-diene-monomer (NR/R-EPDM) blends,” Polymer Testing, Vol.32, pp. 385-393, 2013.
  5. [5] J.-B. Le Cam, B. Huneau, and E. Verron, “Fatigue damage in carbon black filled natural rubber under uni- and multiaxial loading conditions,” Int. J. of Fatigue, Vol.52, pp. 82-94, 2013.
  6. [6] A. Nimpaiboon, S. Amnuaypornsri, and J. Sakdapipanich, “Influence of gel content on the physical properties of unfilled and carbon black filled natural rubber vulcanizates,” Polymer Testing, Vol.32, pp.1135-1144, 2013.
  7. [7] J. Diani, B. Fayolle, and P. Gilormini, “A review on the Mullins effect,” European Polymer J., Vol.45, pp. 601-612, 2009.
  8. [8] R. Nayak, R. Shetty, and S. Shetty, “Experimental and Finite Element Analysis on Chip Formation Mechanism in Machining of Elastomers,” Bonfring Int. J. of Industrial Engineering and Management Science, Vol.2, No.2, pp. 10-13, 2012.
  9. [9] J. Yan and J. S. Strenkowski, “A finite element analysis of orthogonal rubber cutting,” J. of Materials Processing Technology, Vol.174, pp. 102-108, 2006.
  10. [10] Y. Kakinuma, N. Yasuda, and T. Aoyama, “Micromachining of soft polymer material applying cryogenic cooling,” J. of Advanced Mechanical Design, Systems, and Manufacturing, Vol.2, No.4, pp. 560-569, 2008.
  11. [11] V. G. Dhokia, S. T. Newman, P. Crabtree, and M. P. Ansell, “A process control system for cryogenic CNC elastomer machining,” Robotic and Computer – Integrated Manufacturing, Vol.27, pp. 779-784, 2011.
  12. [12] R. Nayak, R. Shetty, and S. Shetty, “Experimental and Finite Element Analysis on Chip Formation Mechanism in Machining of Elastomers,” Bonfring Int. J. of Industrial Engineering and Management Science, Vol.2, No.2, pp. 10-13, 2012.
  13. [13] A. J. Shih, M. A. Lewis, and J. S. Strenkowski, “End Milling of Elastomers – Fixture Design and Tool Effectiveness for Material Removal,” J. of Manufacturing Science and Engineering, Vol.126, pp. 115-123, 2004.
  14. [14] J. Luo, H. Ding, and A. J. Shih, “Induction-heated tool machining of elastomers – part 2: chip morphology, cutting forces, and machined surfaces –,” Machining Science and Technology, Vol.9, pp. 567-588, 2005.
  15. [15] M. Jin and M. Murakawa, “High-Speed Milling of Rubber (1st Report) – Fundamental Experiments and Considerations for Improvement of Work Accuracy,” J. of the Japan Society for Precision Engineering, Vol.64, No.6, pp.897-901, 1998. (in Japanese)
  16. [16] D.-L. Chen, P.-F. Yang, and Y.-S. Lai, “A review of threedimensional viscoelastic models with an application to viscoelasticity characterization using nanoindentation,” Microelectronics Reliability, Vol.52, pp. 541-558, 2012.
  17. [17] J. Shinozuka, M. Sando, and T. Horie, “Ultra High-Speed Cutting Experiment under the Cutting Condition that Cutting Speed Exceeds Plastic Wave Speed of Workpiece,” Advanced Materials Research, Vol.325, pp. 327-332, 2011.
  18. [18] J. Shinozuka, H. Yachi, T. Higashi, M. Sando, T. Maetani, S. Unami, and Y. Ozaki, “Effect of MnS on the cutting mechanism of powder metallurgy steel in cutting speeds ranging from 1 m/s to 150 m/s,” Advanced Materials Research, Vol.565, pp. 370-375, 2012.
  19. [19] M. Sando, T. Higashi, and J. Shinozuka, “Influence of the Heat Treatment Condition upon the High-Speed Cutting Mechanism of Aluminum Alloy A2017,” J. of Advanced Mechanical Design, Systems, and Manufacturing, Vol.6, No.6, pp. 859-874, 2012.
  20. [20] T. Higashi, M. Sando, and J. Shinozuka, “Cutting experiments in cutting speeds of up to 200 m/s with a high-speed impact cutting tester,” Key Engineering Materials, Vols.523-524, pp. 1041-1046, 2012.
  21. [21] J. Shinozuka, “Experimental investigation on the cutting mechanism of oxygen free copper in cutting speeds ranging from 1 m/s to 210 m/s,” Advanced Materials Research, Vol.797, pp. 208-213, 2013.
  22. [22] A. N. Gent, “On the relation between indentation hardness and Young’s modulus,” Transaction of the Institution of the Rubber Industry, Vol.34, pp. 46-57, 1958.
  23. [23] M. C. Shaw, “Metal cutting principles,” Oxford Science Publication, 1984.
  24. [24] T. Matsumura, M. Shimada, K. Teramoto, and E. Usui, “Predictive Cutting Force Model and Cutting Force Chart for Milling with Cutter Axis Inclination,” Int. J. of Automation Technology, Vol.7, No.1, pp. 30-38, 2013.
  25. [25] H. Kiyota, F. Itoigawa, S. Endo, and T. Nakamura, “Analytical Approach for Optimization of Chamfered Cutting Tool Preparation Considering Built-Up Edge Extrusion Behavior,” Int. J. of Automation Technology, Vol.7, No.3, pp. 329-336, 2013.
  26. [26] M. Fukuda, K. Yamaguchi, “On the coefficient of friction between rubber and metal under high pressure,” Bulletin of the JSME, Vol.17, No.103, pp. 157-164, 1974.

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