Artículos de revistas
Evaluating The Quality Of Turned Hardened Steel Workpieces
Registro en:
Revista Brasileira De Ciencias Mecanicas/journal Of The Brazilian Society Of Mechanical Sciences. Braz Soc Mech Sci, Rio De Janeiro, Brazil, v. 21, n. 2, p. 343 - 354, 1999.
1007386
2-s2.0-0033313455
Autor
Matsumoto H.K.
Diniz A.E.
Institución
Resumen
Recently many works have been done in order to study the turning process of hardened steels, mainly concerning the lives of ceramic and PCBN tools. However, just few works deal with the problem of turning accuracy, comparing it with grinding accuracy, mainly when the lathe used has a conventional mechanical design. Therefore, it is important to evaluate the capability of these conventional machines to replace the grinding operation by turning and still maintain workpiece quality typical of grinding operations. This work tries to contribute to fill this gap. Several AISI E52100 hardened steel workpieces (60 HRc) were turned using mixed ceramic and PCBN tool materials and different cutting speeds in a lathe of conventional design. Workpiece surface roughness and diameter variation were measured throughout the tool life test, in order to evaluate the quality of the workpiece. The length of the workpieces was also varied to analyze the influence of workpiece shape on its quality. The main conclusion of this work was that the turning process is able to replace grinding in hardened steel finishing operations. Moreover, it is able to achieve a surface and dimensional quality similar to that of ground components, even when the machine used has a conventional mechanical design. 21 2 343 354 Abrão, A.M., Aspinwall, D.K., Cutting forces assesment when turning hardened bearing steel (1995) Journal of the Brazilian Soc. Mechanical Science, 17 (4), pp. 353-359 Abrão, A.M., Aspinwall, D.K., The surface integrity of turned and ground hardened bearing steel (1996) Wear, 196, pp. 279-284 Agostinho, O.L., Rodrigues, A.C.S., Lirani, J., (1977) Tolerâncias, Ajustes, Desvios e Análise de Dimensões, , Edgard Blücher Ltda, São Paulo, Brazil Bonifácio, M.E.R., (1993) Monitoramento do Processo de Torneamento de Acabamento Via Sinais de Vibração, , Dissertação de mestrado, Faculdade de Engenharia Mecânica, UNICAMP, Campinas, SP, Brazil Bossom, P.K., Usinagem de acabamento de ligas ferrosas duras (1994) De Beers Industrial Diamond Division Buschmole, N., Hard turning with ceramics (1995) Proceedings of the 1st International Machining and Grinding Conference, pp. 979-987. , Dearborn, USA Chou, Y.S., Barash, M.M., Review on hard turning and CBN cutting tools (1995) Proceedings of the 1st Int. Machining and Grinding Conference, pp. 949-962. , Dearborn, USA Chryssolouris, G., Effects of machine-tool-workpiece stiffness on the wear behavior of superhard cutting materials (1982) Annals of the CIRP, 31 (1), pp. 65-69 Costa, D.D., (1993) Análise dos Parâmetros de Torneamento de Aços Endurecidos, , Dissertaçâo de mestrado, Faculdade de Engenharia Mecânica, UNICAMP, Campinas, SP, Brazil Ferraresi, D., (1978) Fundamentos da Usinagem dos Metais, , Editora Edgard Blücher, São Paulo, Brazil König, W., Berktold, A., Koch, K.F., Turning versus grinding - A comparison of surface integrity aspects and attainable accuracies (1993) Annals of the CIRP, 42 (1), pp. 39-43 König, W., Klinger, M., Link, R., Machining hard materials with geometrically defined cutting edges -field of applications and limitations (1990) Annals of the CIRP, 39 (1), pp. 61-64 (1994) Modern Metal Cutting, , AB Sandvik Coromant, Sandviken, Sweden Shaw, M.C., Vyas, A., Heat affected zones in grinding steel (1994) Annals of the CIRP, 43 (1), pp. 279-282 Tönshoff, H.K., Wobker, H.G., Brandt, D., Potential and limitation of hard turning (1995) Proceedings of the 1st Int. Machining and Grinding Conference, pp. 963-978. , Dearborn, USA