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The Effect of the Tool Geometry and Cutting Conditions on the Tool Deflection and Cutting Forces

Authors: A. Fata, B. Nikuei

Abstract:

In this paper by measuring the cutting forces the effect of the tool shape and qualifications (sharp and worn cutting tools of both vee and knife edge profile) and cutting conditions (depth of cut and cutting speed) in the turning operation on the tool deflection and cutting force is investigated. The workpiece material was mild steel and the cutting tool was made of high speed steel. Cutting forces were measured by a dynamometer (type P.E.I. serial No 154). The dynamometer essentially consisted of a cantilever structure which held the cutting tool. Deflection of the cantilever was measured by an L.V.D.T (Mercer 122) deflection indicator. No cutting fluid was used during the turning operations. A modern CNC lathe machine (Okuma LH35-N) was used for the tests. It was noted that worn vee profile tools tended to produce a greater increase in the vertical force component than the axial component, whereas knife tools tended to show a more pronounced increase in the axial component.

Keywords: Cutting force, Tool deflection, Turning, Cuttingconditions.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1328646

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References:


[1] G. Boothroyd, W. Knight, Fundamentals of metal machining and machine tools, 1st ed., Scripta Book Company, 1988.
[2] F. E. H. Tay, S. K. Sikdar, M. A. Mannan, Topography of the flank wear surface, Journal of Materials Processing Technology 120 (2002) 243-248.
[3] D. A. Stephenson, J. S. Agapiou, Metal cutting theory and practice, Marcel Dekker, INC., USA, 1997.
[4] V. C. Venkatesh, H. Chandrasekaran, Experimental techniques in metal cutting, Prentice Hall of India Private Limited New Delhi, 1987.
[5] M. Cemal Cakir, Yahya Isik, Detecting tool breakage in turning aisi 1050 steelusing coated and uncoated cutting tools, Journal of Materials Processing Technology 159 (2005) 191-198.
[6] S. K. Sikdar, M. Chen, Relationship between tool flank wear area and component forces in single point turning, Journal of Materials Processing Technology 128 (2002) 210-215.
[7] D.E. Dimla Sr., The impact of cutting conditions on cutting forces and vibration signals in turning with plane face geometry inserts, Journal of Materials Processing Technology 155-156 (2004) 1708-1715.
[8] Y. Isik, Investigating the machinability of tool steels in turning operations, Materials and Design, 2006.
[9] C. Scheffer, H. Kratz, P. S. Heyns, and F. Klocke, Development of a tool wear-monitoring system for hard turning, International Journal of Machine Tools and Manufacture 43 (2003) 973-985.
[10] C. Chungchoo, D. Saini, The total energy and the total entropy of force signals-new parameters for monitoring oblique turning operations, International Journal of Machine Tools and Manufacture 40 (2000) 1879-1897.
[11] J. H. Lee, S. J. Lee, One-step-ahead prediction of flank wear using cutting force, International Journal of Machine Tools and Manufacture 39 (1999) 1747-1760.
[12] V. C. Venkatesh, I. A. Kattan, D. Hoy, C. T. Ye, J. S. Vankirk, An analysis of cutting tools with negative side cutting edge angles, Journal of Materials Processing Technology 58 (1996) 351-361.
[13] H. V. Ravindra, Y. G. Srinivasa, R. Krishnamurthy, Modelling of tool wear based on cutting forces in turning, Wear 169 (1993) 25-32.
[14] A. Bhattacharyya, Metal cutting theory and practice, Third Edition , New Central Book Agency (p), India, 1998.