Investigating the Effect of Cutting Speed Variation on Surface Roughness of 7136 Aluminum Alloy in End Milling

Abstract:

Surface quality is affected by various processing parameters and inherent uncertainties of the metal cutting process. Therefore, the surface roughness anticipation becomes a real challenge for engineers and researchers. In previous researches [1] I have investigated the feed rate influence on surface roughness and manufacturing time reduction. The 7136 aluminum alloy was machined by end milling operation using standard tools for aluminum machining. The purpose of this paper is to identify by experiments the influence of cutting speed variation on surface roughness. The scientific contribution brought by this research is the improvement of the end milling process of 7136 aluminum alloy. This material is an aluminum alloy developed by Universal Alloy Corporation and is used in the aircraft industry to manufacture parts from extruded profiles. The research method used to solve the problem is experiment. A range of cutting speeds was used while the cutting depth and the feed per tooth were constrained per minimum and maximum requirements defined for the given cutting tool. The experiment was performed by using a 16 mm End milling cutter, holding two indexable cutting inserts. The machine used for the milling tests was a HAAS VF2 CNC. The surface roughness (response) was measured by using a portable surface roughness tester (TESA RUGOSURF 20 Portable Surface Finish Instrument). Following the experimental research, results were obtained which highlight the cutting speed influence on surface roughness. Based on these results we created roughness variation diagrams according to the cutting speed for each value of feed per tooth and cutting depth. The final results will be used as data for future research.

• Periodical: Applied Mechanics and Materials (Volumes 809-810)
• Pages: 129-134
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.809-810.129
• Online since: November 2015
• Authors: Bianca Bontiu POP*, Mircea Lobonţiu
• Keywords: Al 7136, Cutting Speed, End Milling Process, Feed per Tooth, Surface Roughness

References

[1] A.B. Bonţiu Pop, Investigating the effect of machining parameters on surface roughness of 7136 aluminum alloy in end milling, The International Conference of the Carpathian Euro-Region specialists in industrial systems Ceursis 2014, 10th edition, 11-13 september, 2014, Baia Mare, Romania, pp.29-35.

DOI: 10.4028/www.scientific.net/amm.809-810.123

[2] C. Melian, I. Paşca, M. Lobonţiu, Experimental research of effective cutting speed influence on surface roughness in ball end milling of C45 material, Academic Journal of Manufacturing Engineering. 11, 3 (2013) 28-33.

DOI: 10.4028/www.scientific.net/amm.657.53

[3] S. Ravai Nagy, I. Paşca, M. Lobonţiu, M. Bănică, Experimental Research of Effective Cutting Speed Influence on Surface Roughness in Ball End Milling of C45 Material with Hardness 34 HRC, Applied Mechanics and Materials. 657 (2014) 53-57.

DOI: 10.4028/www.scientific.net/amm.657.53

[4] H. R. Ghan, S. D., Ambekar, A Review on Optimization of cutting parameter for surface roughness, material removal rate and machining time of aluminium LM-26 alloy, International Journal of Research in Aeronautical and Mechanical Engineering. 2 (2014).

[5] M. A., Kuttolamadom, S., Hamzehlouia, L., Mears, Effect of machining feed on surface roughness in cutting 6061 aluminum. SAE. Int. J. Mater. Manuf. 3 (2010) 108-119.

DOI: 10.4271/2010-01-0218

[6] P. R., Patel, B. B., Patel, V. A., Patel, Effect of machining parameters on surface roughness for 6063 AL-TIC (5 & 10 %) metal matrix composite using RSM. International Journal of Research in Engineering and Technology. 2 (2013) 65-71.

DOI: 10.15623/ijret.2013.0201013