SavedAdd your journal

Journals / Sigma Mühendislik ve Fen Bilimleri Dergisi / 2020 / Cilt: 38 - Sayı: 1

Evaluation of tooth profile changes of symmetric and asymmetric spur gear forging dies due to shrink fit

Omer EYERCIOGLU
Gulaga TAS
Mehmet ALADAG
Pages
71–81
Publication Date
2020-03-27
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

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

The radial displacements of the asymmetric gear forging die are higher than the symmetric one.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The compressive pre-stress due to the shrink fitting cause dimensional changes on the tooth profile of the precision gear forging dies.
📊
Key Findings & Data:The accuracy of the gear die is directly affecting the accuracy of the final product.
💡
Conclusion & Impact:The radial displacements of the asymmetric gear forging die are higher than the symmetric one.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Gear die · asymmetric gear · shrink fit

Abstract

The compressive pre-stress due to the shrink fitting cause dimensional changes on the tooth profile of the precision gear forging dies. The accuracy of the gear die is directly affecting the accuracy of the final product. Therefore, the dimensional variations due to shrink fit must be pre-determined and the gear tooth profile on the die insert modified accordingly. In this study, the change of tooth profile of the symmetric and asymmetric precision spur gear forging dies because of shrink fitting are analyzed by finite element (FE) method and the results are compared with the experimental ones. Both the (CMM) measurements and the finite element results of gear dies predict much higher radial displacements than the results of the cylindrical approach (Lame Equations). The amount of radial displacements along the tooth profiles of both symmetric and asymmetric gear dies are not uniform and changing from root to tip of the tooth. The radial displacements of the asymmetric gear forging die are higher than the symmetric one.

🔖

Cite This Article

EYERCIOGLU, O., TAS, G., ALADAG, M. (2020). Evaluation of tooth profile changes of symmetric and asymmetric spur gear forging dies due to shrink fit. Sigma Mühendislik ve Fen Bilimleri Dergisi, Cilt: 38 - Sayı: 1, 71–81. https://ajindex.com/articles/419289

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (15)

  1. B.A. Behrens, E. Doege, S. Reinsch, K. Telkamp, H. Daehndel, A. Specker, Precision forging processes for high-duty automotive components, J. Mater. Process. Technol. 185 (2007) 139–146. doi:10.1016/j.jmatprotec.2006.03.132
  2. O. Eyercioglu, Developments and performance analyses of precision forged spur gears, University of Birmingham, 1995
  3. O. Eyercioglu, T. Dean, D. WaLton, Precision Forging of Gears, in: Int. Mach. Des. Prod. Conf., 1996
  4. T. Dean, The net-shape forming of gears, Mater. Des. 21 (2000) 271–278. doi:10.1016/S0261-3069(99)00074-6
  5. O. Eyercioglu, Precision Forging of Asymmetric Spur Gears, Sci. Technol. Res. Counc. Turkey-MAG 217M063. (2018)
  6. N.F. Yilmaz, O. Eyercioglu, Near net shape spur gear forging using concave preform, Mechanika. 24 (2018) 268–277. doi:10.5755/j01.mech.24.2.19334
  7. B. Parsons, B.N. Cole, Paper 20: A Generalized Approach to the Optimum Design of Short Composite Cylinders:, doi:10.1243/PIME_CONF_1967_182_084_02. Http://Dx.Doi.Org/10.1243/PIME_CONF_1967_182_084_02. (2016)
  8. G. Lamé, Lecons sur la théorie mathématique de l’Elasticite des Corps Solide, Paris, Courcier, Bachelier, Imprimeur-Libraire, 1852
  9. O. Eyercioglu, T.A. Dean, Design and manufacture of precision gear forging dies, Proc. CIRP Int. Conf. Des. Prod. Dies Molds. (1997) 311–316
  10. M.A. Kutuk, O. Eyercioglu, N. Yildirim, A. Akpolat, Finite element analysis of a cylindrical approach for shrink-fit precision gear forging dies, Proc. Inst. Mech. Eng. Part C J. Mech. Eng. Sci. 217 (2003) 677–685. doi:10.1243/095440603321919590
  11. O. Eyercioglu, M.A. Kutuk, N.F. Yilmaz, Shrink fit design for precision gear forging dies, J. Mater. Process. Technol. 209 (2009) 2186–2194. doi:10.1016/j.jmatprotec.2008.05.016
  12. O. Eyercioglu, T. Dean, D. Walton, Dimensional accuracy of hot precision forged spur gears, Int. Gearing Conf. (1994)
  13. M.H. Sadeghi, Gear Forging: Mathematical Modeling and Experimental Validation, J. Manuf. Sci. Eng. 125 (2003) 753. doi:10.1115/1.1616952
  14. N.F. Yilmaz, O. Eyercioglu, An integrated computer-aided decision support system for die stresses and dimensional accuracy of precision forging dies, Int. J. Adv. Manuf. Technol. 40 (2009) 875–886. doi:10.1007/s00170-008-1402-z
  15. B.A. Behrens, D. Odening, Process and tool design for precision forging of geared components. Int J Mater Form (2009) 21:125–128. doi.:10.1007/s12289-009-0577-7 [16] J.H.Kang, KO Lee, Je J.S., S.S. Kang, Spur gear forging tool