Designing of screw impressions in the helical rolling of balls

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

Identyfikatory

DOI

10.1016/j.acme.2013.07.004

• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of the studies undertaken to investigate the helical rolling process for producing balls in modified helical impressions. In the first part of the paper, the helical rolling process for producing balls is discussed and the effect of selected technological parameters on the quality of formed parts is described. Next, the methods for sizing of helical impressions are discussed and a modified version of the tool design process is proposed. In the subsequent part of the paper, the results of the conducted experimental tests of rolling balls in traditional helical impressions are presented, and then the results of the performed numerical simulations of rolling balls in single and double impressions developed using the modified method are described. The numerical analysis of the process was conducted based on the finite element method (FEM), using the commercially available software package Simufact Forming version 11.0. The simulations were performed in the three-dimensional state of strain and in their course the following were determined: the geometry of the balls being rolled, metal flow kinematics in the helical impression, and force parameters of the process. The obtained results confirmed the validity of using the proposed modified tool sizing method in the helical rolling of balls.

Słowa kluczowe

EN

helical rolling; helical tools; balls; FEM

PL

walcówka; narzędzia spiralne; walcowanie; metoda elementów skończonych

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2014
• Tom: Vol. 14, no. 1
• Strony: 104--113
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Tomczak J.

• Lublin University of Technology, Faculty of Mechanical Engineering, Nadbystrzycka 36, 20-128 Lublin, Poland

autor

Pater Z.

• Lublin University of Technology, Faculty of Mechanical Engineering, Nadbystrzycka 36, 20-128 Lublin, Poland

autor

Bulzak T.

• Lublin University of Technology, Faculty of Mechanical Engineering, Nadbystrzycka 36, 20-128 Lublin, Poland

Bibliografia

• [1] W. Dobrucki, Zarys obróbki plastycznej metali, Wydawnictwo Śląsk, Katowice, 1975.
• [2] Z. Pater, J. Tomczak, Walcowanie śrubowe kul do młynów kulowych, Wydawnictwo Politechniki Lubelskiej, Lublin, 2012.
• [3] S.P. Gronovskij, Novye procesy i stany dla prokatki izdelij v vintovych kalibrach, Mietalurgija, Moskva, 1980.
• [4] W. Quanxian, W. Qiping, X. Jianming, Study on the method for groove design in the helical rolling of steel balls, Journal of Materials Processing Technology 55 (1995) 340–344.
• [5] W. Dobrucki, Wpływ podstawowych parametrów procesu na dokładność i jakość kul walcowanych na gorąco, Obróbka Plastyczna 9 (1970) 579–590.
• [6] J. Tomczak, Z. Pater, J. Bartnicki, J. Kazanecki, P. Chyła, Badania procesu kształtowania kul w walcach śrubowych, Mechanik 85 (11) (2012) S927–S931.
• [7] J. Tomczak, Z. Pater, J. Bartnicki, J. Kazanecki, P. Chyła, Wpływ metody kalibrowania wykrojów śrubowych na jakość kul walcowanych w walcarkach skośnych, Przegląd Mechaniczny 71 (11) (2012) S33–S39.
• [8] Z. Pater, J. Tomczak, J. Bartnicki, M. R. Lovell, P. L. Menezes, Experimental and numerical analysis of helical-wedle rolling process for producing steel balls, International Journal of Machine Tools and Manufacture 67 (2013) 1–7.
• [9] Z. Gronostajski, M. Hawryluk, The main aspects of precision forming, Archives of Civil and Mechanical Engineering 8 (2) (2008) 38–54.
• [10] Z. Pater, A. Tofil, J. Tomczak, Steel balls forming by cross rolling with upsetting, Metalurgija 52 (1) (2013) 103–106.
• [11] P. Gembalova, J. Boruta, Hot forming parameters research of bearing steel, Archives of Civil and Mechanical Engineering 7 (2) (2007) 22–28.
• [12] Stalowe kule i cylpepsy do młynów. Polska Norma PN-H- 94057; 1998.