New Extrusion Process for Producing Twist Drills using Split Dies

• Autorzy: Bulzak T. , Pater Z. , Tomczak J.

Identyfikatory

DOI

10.23743/acs-2017-21

• Języki publikacji: EN

Abstrakty

EN

The paper presents a new extrusion process for producing twist drills using split dies. The design of the dies is described, where the profile of the flute-forming element is the same as the profile of the flute on the plane inclined to the drill axis at an angle equal to the helix angle. The proposed method for the extrusion of twist drills by the new type of dies is verified by numerical modeling. Three cases of the extrusion process are modelled, each with a different position of the flute-forming element relative to the axis of the drill. The paper investigates the effect of the position of the flute-forming element on the angle of inclination of the flutes and the cross-section shape of the drill. Numerical modeling is performed using DEFORM-3D.

Słowa kluczowe

EN

extrusion; twist drill; FEM; experiment

• Wydawca: Polskie Towarzystwo Promocji Wiedzy ; Lublin University of Technology
• Czasopismo: Applied Computer Science
• Rocznik: 2017
• Tom: Vol. 13, no 3
• Strony: 55--63
• Opis fizyczny: Bibliogr. 10 poz., fig.

Twórcy

autor

Bulzak T.

• Lublin University of Technology, Nadbystrzycka Street 36, 20-618 Lublin, Poland

autor

Pater Z.

• Lublin University of Technology, Nadbystrzycka Street 36, 20-618 Lublin, Poland

autor

Tomczak J.

• Lublin University of Technology, Nadbystrzycka Street 36, 20-618 Lublin, Poland

Bibliografia

• [1] Bulzak, T., & Pater, Z. (2013). Numerical analysis of the extrusion process of twist drills. Acta Metallurgica Slovaca, 19, 132–140. doi:10.12776/ams.v19i2.97
• [2] Bulzak, T., Tomczak, J., & Pater, Z. (2016). Wpływ parametrów matrycy na geometrię wyciskanych wierteł krętych. Hutnik – Wiadomości Hutnicze, 83, 390–392. doi:10.15199/24.2016.9.3
• [3] Bulzak, T., Tomczak, J.,& Pater, Z. (2014). Method for producing twist drills by extrusion using a three-slide forging press. Key Engineering Materials, 622–623, 129–135. doi:10.4028/www.scientific.net/KEM.622-623.129
• [4] Cristobal, M., Ramírez, E. I., Ruiz, O., Ortiz, A., & Jacobo, V. H. (2017). Sensitivity analysis on ram speed of a direct extrusion process model using a porthole die through CEL method. The International Journal of Advanced Manufacturing Technology, 90, 45–57. doi:10.1007/s00170-016-9279-8
• [5] Dong, W. P., & Chen, J. (2008). 3D FEA simulation of 4A11 piston skirt isothermal forging process. Transactions of Nonferrous Metals Society of China, 18, 1196–1200. doi:10.1016/S1003-6326(08)60204-6
• [6] Fang, G., Zhou, J., & Duszczyk, J. (2009). Extrusion of 7075 aluminium alloy through double-pocket dies to manufacture a complex profile. Journal of Materials Processing Technology, 209, 3050–3059. doi:10.1016/j.jmatprotec.2008.07.009
• [7] Hwang, Y. M., & Chang, C. N. (2014). Hot extrusion of hollow helical tubes of magnesium alloys. Procedia Engineering, 81, 2249–2254. doi: 10.1016/j.proeng.2014.10.316
• [8] Jiang, C. P. (2015). The effect of initial grain size on the mechanical properties and deformability of titanium alloy in a direct extrusion process. International Journal of Precision Engineering and Manufacturing, 16, 301–307. doi:10.1007/s12541-015-0040-2
• [9] Kim, S. Y., Kubota, S., & Yamanaka, M. (2008). Application of CAE in cold forging and heat treatment processes for manufacturing of precision helical gear part. Journal of Materials Processing Technology, 201, 25–31. doi:10.1016/j.jmatprotec.2007.11.219
• [10] Liekmeier, F. (1992). Hot extrusion of twist drill. Umformtechnik, 26, 181.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)