Study of an Industrial FEM Tool for Line Boring Process of Cylinder Blocks

Abstract:

The aim of this study is to realize a simple simulation tool, in order to predict the form defect of cylinder block bore liners in the moment of rough boring process. Geometrical defect prediction is critical for Process Engineering in order to optimize all machining sequences in the production line, to grantee the finale product, according to the norms defined by the Design Engineering. In revenge, Process Engineering can suggest a new product design according to geometrical defect predictions. Simulation can significantly reduce the time of Process-Product parameters adjustment (pre-project).In this study a simple static FEM model, based on the cylinder block geometry, is proposed to predict the form defect of the bore liners in the moment of process. The cutting tool is supposed as a rigid part in this model. The clamping condition and meshing information are applied on the part in the initial state. Calculation of cutting force components is performed through the Kienzle cutting law and applied on the bore liners by means of a Python script. The Python script runs the calculation automatically by means of ABQUS software. Another Python script is in charge of simulation results post-processing. The interface of this tool is an Excel sheet which allows us to inter the process parameters and automatically run the FEM calculation. Out-put excel file contains the form defect of each bore according to 3 levels of bore (top, middle and the bottom) and different angular position.The simulation results put forward that the clamping condition plays an import role in the bore distortion. Consequently, optimizing the clamping pressure and its localization is critical, before cutting parameters adjustment, in line boring process. Experimental validation is performed in parallel with the simulation. The first correlation between experimentation and simulation results shows that the first influent factor which disturbs the correlation is the initial form defect of rough part due to the casting process. Integration of casting form defect in the simulation is crucial and should be taken into account in the next studied.

• Periodical: Key Engineering Materials (Volumes 651-653)
• Pages: 1171-1182
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.651-653.1171
• Online since: July 2015
• Authors: Shadan Tabibian*, Philippe Lorong
• Keywords: Automotive Industry, Cutting Law, Cylinder Block, FEM Modeling, Form Defect, Line Boring, Machining Process

References

[1] Luc MASSET, Jean-François DEBONGNIE, Audrey MARTY - Machining process simulation using SAMCEF superelement- 9th SAMTECH Users Conference (2005).

[2] C.A. Van Luttervelt, T.H.C. Childs, I.S. Jawahir, F. Klocke, P.K. Venuvinod, Present situation and future trends in modeling of machining operations, Annals of CIRP 47 (2) (1998) 578–626.

DOI: 10.1016/s0007-8506(07)63244-2

[3] K.F. Ehman, S.G. Kapoor, R.E. Devor, Unknown Lazoglu, Machining process modeling: a review, Journal of Manufacturing Science and Engineering, Trans. of ASME 119 (1997) 655–663.

DOI: 10.1115/1.2836805

[4] Gu F., Melkot S. N., Kapoor S. G., Devor R. E., A Model for the Prediction of Surface Flatness in Face Milling, ASME Journal of Manufacturing Science and Engineering vol. 119, pp.476-484, (1997).

DOI: 10.1115/1.2831177

[5] Y. Altintas. Manufacturing automation. Metal Cutting Mechanistics, Machine Tool Vibrations, and CNC Design. Cambridge University Press, 2000, 286 p.

DOI: 10.1017/cbo9780511843723

[6] G. Subramani, S. G. Kapoor and R. E. DeVor, A Model for the Prediction of Bore Cylindricity During Machining, J. Manuf. Sci. Eng. 115(1), 15-22 (Feb 01, 1993).

DOI: 10.1115/1.2901630

[7] Ismail Lazoglu, Fuat Atabey, Yusuf Altintas- Dynamics of boring processes: Part III-time domain modeling - International Journal of Machine Tools & Manufacture 42 (2002) 1567–1576.

DOI: 10.1016/s0890-6955(02)00067-6

[8] M. Sc. Karla P. Monroy Vazquez, Claudio Giardini and Elisabetta Ceretti, Cutting force modeling, springer Reference, 1 July 2013 1-20.

[7] F. Atabey, I. Lazoglu, Y. Altintas- Mechanics of boring processes- Part I- International Journal of Machine Tools & Manufacture 43 (2003) 463–476.

DOI: 10.1016/s0890-6955(02)00276-6

[8] F. Atabey, I. Lazoglu, Y. Altintas - Mechanics of boring processes—Part II—multi-insert boring heads- International Journal of Machine Tools & Manufacture 43 (2003) 477–484.

DOI: 10.1016/s0890-6955(02)00277-8

[9] Y. Zheng, H. Li, W. W. Olson, J. W. Sutherland- Evaluating Cutting Fluid Effects on Cylinder Boring Surface Errors by Inverse Heat Transfer and Finite Element Methods- Journal of Manufacturing Science and Engineering 122 (2000) 377-383.

DOI: 10.1115/1.1285865

[10] Black SC, Chiles V, Lissaman AJ, Martin SJ (1996) Principles of engineering manufacture, 3rd edn. Butterworth-Heinemann, Oxford.

[11] Sebastien Campocasso, Jean-Philippe Costes, Gerard Poulachon and Alexis Perez-Duarte- Cutting Forces Modeling in Finish Turning of Inconel 718 Alloy with Round Inserts, 13th CIRP Conference on Modelling of Machining Operations, May 2011, Sintra, Portugal. Modelling of Machining Operations (223), pp.75-84.

DOI: 10.4028/www.scientific.net/amr.223.75

[12] L. Masset, B. Deltour, Etude de faisabilité numérique de l'usinage - Rapport n°4 - Modèle de forces de coupe.