Contribution to cylindrical grinding of interrupted surfaces of hardened steel with medium grit wheel
- 51 Downloads
Grinding is generally the first choice to provide combination of both superior surface finish and closer dimensional tolerances in a machined component. This process can be employed in manufacturing of continuous and interrupted surfaces. Crankshafts and engine piston rings are examples of ground precision mechanical components having interrupted surfaces. However, the specific literature about grinding of interrupted surfaces is still scarce. In this context, aiming to further contribute to the understanding of the behavior of surface integrity of interrupted surfaces during grinding, this paper presents an experimental investigation of interrupted surfaces ground with white aluminum oxide grinding wheel. Discs of AISI 4340 hardened steel with different number of grooves (2, 6, and 12) on the external surface were tested. Experiments with discs without interrupted surface were also carried out for comparisons. In addition to the number of grooves, three values of infeed rate (0.25, 0.50, and 0.75 mm/min) were used as input parameters. The output parameters investigated were the geometric errors (surface roughness and roundness) of the workpiece material as well as the diametric wheel wear. Analysis of variance (ANOVA) test was performed to verify any statistical difference among the output variables. Results showed that both surface finish and roundness of workpieces with interrupted surfaces were higher than those obtained for continuous surface. These parameters also increased with infeed rate up to 0.50 mm/min, whereas the grinding wheel wear was more sensitive to number of grooves and infeed rate. No thermal damages were observed on the machined workpieces under the conditions investigated.
KeywordsCylindrical external plunge grinding Interrupted surface Number of grooves AISI 4340 steel Geometric errors Wheel wear Surface integrity
Unable to display preview. Download preview PDF.
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- 7.Malkin S, Guo C (2008) Grinding technology: theory and applications of machining with abrasives, New York: Industrial Press, 2nd. Edition, p. 372, 2008Google Scholar
- 11.Rowe WB (2010) Modern grinding techniques, Wiley, Hoboken, NJ; Scrivener Publishing LLC, Salem, MA, p. 49Google Scholar
- 12.Malkin S, Guo C (2007) Thermal analysis of grinding, CIRP Ann. Manuf. Technol., 56(2), pp. 760–782. p. 47-55, 2008Google Scholar
- 13.Marinescu ID, Rowe WB, Dimitrov B, Inasaki I. (2013) Tribology of abrasive machining processes. 2ªed. Norwich, William Andrew Inc.Google Scholar
- 16.Pérez J, Hoyas S, Skuratov DL, Ratis YL, Selezneva IA, Fernández De Córdoba P, Urchueguía JF (2008) Heat transfer analysis of intermittent grinding processes. Int J Heat Mass Transf 51(15):4132–4138. https://doi.org/10.1016/j.ijheatmasstransfer.2007.11.043 CrossRefMATHGoogle Scholar
- 18.Alves LOBS, Ruzzi RS, Silva RS, Jackson M J, Tarrento GE, Mello HJ, Aguiar PR, Bianchi EC (2017) Performance evaluation of the minimum quantity of lubricant technique with auxiliary cleaning of the grinding wheel in cylindrical grinding of N2711 steel. Journal of Manufacturing Science and Engineering, V 139Google Scholar
- 19.Ruzzi RS, Belentani RM, De Mello HJ, Canarim RC, D’Addona DM, Diniz AE, De Aguiar PR, Bianchi EC (2016) MQL with water in cylindrical plunge grinding of hardened steels using CBN wheels, with and without wheel cleaning by compressed air. Int J Adv Manuf Technol 90(1–4):329–338Google Scholar
- 20.Sohal N, Sandhu CS, Panda BK (2014) Analyzing the effect of grinding parameters on MRR and surface roughness of EN24 and EN353 steel. Mech Confab 3:1–6Google Scholar
- 26.Marinescu ID, Hitchiner M, Uhlmann E, Rowe WB, Inasaki I (2007) Handbook of machining with grinding wheels, CRC Press, Taylor & Francis Group, USA, 596Google Scholar