OCTOBER 19-20, 2012 - YMCA University of Science & Technology

Proceedings of the National Conference on
Trends and Advances in Mechanical Engineering,
YMCA University of Science & Technology, Faridabad, Haryana, Oct 19-20, 2012
Fig 2 Drills used for the experimentation
Drill Head
Composite
[a]
[b]
Fig 3 Experimental set-up [a] Machine center and data acquisition system [b] Experimental device
3. Taguchi method
The Taguchi method can economically satisfy the needs of problem solving and product/process design
optimization in industry.For conducting the experiments Taguchi method is used. Taguchi method is
experimental design tool used in analysing and designing of experimental results in manufacturing engineering.
Taguchi method uses a special design of orthogonal arrays to study the entire parameter space. Taguchi method
is used for analysing the main effects and interaction effects in experimental analysis and is a powerful tool,
which provides a simple, efficient and systematic approach to determine optimal cutting parameters. Compared
to the conventional approach of experimentation, this method reduces drastically the number of experiments that
are required to model the response functions [21, 22].
Table 5 shows the factors to be studied and the assignment of the factors to the corresponding Levels. The array
chosen was the L 27 [3 13 ].which has 27 rows corresponding to the number of tests (26 degree of freedom) with
13 columns at three levels. The factors and the interactions are assigned to the columns. The plan of Experiments
made of 27 tests in which first column is assigned to feed rate [f], the second column to spindle speed [n], the
fifth column to drill diameter [d] and the remaining columns were used interaction and other effects.
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