Optimization of Cutting Parameters of CNC Milling for Aircraft Components Using Design of Experiments

Abstract:

Machining the components precisely and accurately on consistent basis is a huge challenge in the aerospace industry. Nowadays, manufacturer's demand to machine the components to tighter tolerances. In this paper, a case study of machining aircraft rib components in CNC milling was selected and tighter tolerances were defined. For this, two factors: cutting speed and feed rate was considered with five levels. Thus, 25 different combination of experiments were conducted for design of experiments. Several different statistical tools such as normality test, DOE and ANOVA were used. The study outcome found that feed rate has more significant effect over the machining of aircraft rib components than cutting speed; and there is no significant effect found when interaction of both cutting speed and feed rate were defined. The hypothesis test was performed to determine the optimum cutting parameters for the given condition using full factorial ANOVA test.

• Periodical: Applied Mechanics and Materials (Volume 598)
• Pages: 164-168
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.598.164
• Online since: July 2014
• Authors: Ganesh Kumar Nithyanandam*, Selvamaan Senthamizh, P. Selvaraj, Pezhinkattil Radhakrishnan
• Keywords: ANOVA, Cutting Parameters, Design of Experiment (DOE), Full Factorial

References

[1] N.S. Dhole, G.R. Naik and M.S. Prabhawalkar in: Optimization of Milling Process Parameters of En33 Using Taguchi Parameter Design Approach, Journal of Engineering Research and Studies, Vol. 3 (2012), pp.70-74.

[2] Juran in: Six Sigma Green Belt certification book, (2013).

[3] Information on Wikipedia http: /www. wikipedia. org.

[4] Information on ASQ http: /asq. org.

[5] Piyushpandey, Prabhatkumarsinha, Vijay kumar and Manastiwari in: Process Parametric Optimization of CNC Vertical Milling Machine Using Taguchi Technique in Varying Condition, IOSR Journal of Mechanical and Civil Engineering, Vol. 6 (2013).

DOI: 10.9790/1684-0653442

[6] Surasit Rawangwong, Jaknarin Chatthong, Romadorn Burapa, and Worapong Boonchouytan in: An Investigation of Optimum Cutting Conditions in Face Milling Semi-Solid AA 7075 Using Carbide Tool, International Journal of Innovation, Management and Technology, Vol. 3 (2012).

DOI: 10.4028/www.scientific.net/amr.747.777

[7] Sanjit Moshat, Saurav Datta, Asish Bandyopadhyay and Pradip Kumar Pal in: Parametric optimization of CNC end milling using entropy measurement technique combined with grey-Taguchi method, International Journal of Engineering, Science and Technology, Vol. 2 (2010).

DOI: 10.4314/ijest.v2i2.59130

[8] Milon D. Selvam, A K Shaik Dawood and G Karuppusami in: Optimization of Machining Parameters For Face Milling Operation In A Vertical CNC Milling Machine Using Genetic Algorithm, Engineering Science and Technology: An International Journal (ESTIJ), Vol. 2 (2012).

[9] V V K Lakshmi, K Venkata Subbaiah in: Modeling and Optimization of Process Parameters during End Milling of Hardened Steel, International Journal of Engineering Research and Applications, Vol. 2 (2012), pp.674-679.

[10] Mandeep Chahal in: Investigations Of Machining Parameters On Surface Roughness In CNC Milling Using Taguchi Technique, National Conference on Emerging Trends in Electrical, Instrumentation & Communication Engineering, Vol. 4 (2013).