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
2.2 Machining
Table 3 shows the various experimental parameters and their levels. The experiments were performed at different
feed rates of 0.05 mm/rev, 0.10 mm/rev and 0.15 mm/rev, speeds of 1000 rpm,2000 rpm, and 3000 rpm and
diameters of 4 mm, 8 mm and 12 mm as given in Table 4. The drilling tests are performed on ARIX-CNC
machining center manufactured by ARIX CNC machine Co. Ltd., Taiwan. Coolant was not used in all of the
drilling tests. The drill bits used for the experiments are presented in Fig. 2.
Table 3 Experimental parameters and their values
Parameters
Drill Type
Drill Size
Values
Solid carbide TiN coated step drill
Ø 4mm, Ø 8mm and Ø 12mm
Feed rate (mm/rev) 0.05,0.10,0.15
Spindle speed (rpm) 1000,2000,3000
Table 4. Variable factor levels
S. No Feed rate, mm/rev Spindle speed, rpm Drill size, mm
1 0.05 1000 4
2 0.05 1000 8
3 0.05 1000 12
4 0.05 2000 4
5 0.05 2000 8
6 0.05 2000 12
7 0.05 3000 4
8 0.05 3000 8
9 0.05 3000 12
10 0.10 1000 4
11 0.10 1000 8
12 0.10 1000 12
13 0.10 2000 4
14 0.10 2000 8
15 0.10 2000 12
16 0.10 3000 4
17 0.10 3000 8
18 0.10 3000 12
19 0.15 1000 4
20 0.15 1000 8
21 0.15 1000 12
22 0.15 2000 4
23 0.15 2000 8
24 0.15 2000 12
25 0.15 3000 4
26 0.15 3000 8
27 0.15 3000 12
The thrust forces during drilling were measured with a Piezoelectric-dynamometer mean while the signals of the
thrust force from the dynamometer was amplified and fed through a data–acquisition system for electronic
storage. The data-acquisition System is based on the dynaware software. The experimental setup is shown in Fig.
3.
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