Investigation of Drilling Process Parameters of Palmyra Based Composite

Table 2

Thrust force generated by the candlestick, standard twist, and step cone drill bits during the drilling process.

S. no	Resin	Speed (rpm)	Feed (mm/rev)	Thrust force by candlestick (N)	Thrust force by a twist drill	Thrust force by step cone drill
1	Epoxy	1000	0.10	08.153	10.371	11.232
2	Epoxy	1000	0.15	09.292	10.674	11.331
3	Epoxy	1000	0.20	07.392	10.998	10.459
4	Epoxy	1500	0.10	10.169	10.370	12.981
5	Epoxy	1500	0.15	09.125	10.458	10.600
6	Epoxy	1500	0.20	10.023	10.566	10.968
7	Epoxy	2000	0.10	09.674	10.234	12.259
8	Epoxy	2000	0.15	10.359	10.356	12.657
9	Epoxy	2000	0.20	09.129	10.554	11.227
10	Polyester	1000	0.1	09.627	10.369	11.599
11	Polyester	1000	0.15	10.522	10.273	11.451
12	Polyester	1000	0.20	08.439	10.123	11.348
13	Polyester	1500	0.10	10.438	10.262	11.117
14	Polyester	1500	0.15	10.566	10.178	10.573
15	Polyester	1500	0.20	10.635	10.019	11.896
16	Polyester	2000	0.10	09.534	10.198	10.693
17	Polyester	2000	0.15	08.356	09.956	13.893
18	Polyester	2000	0.20	09.259	09.897	11.354
19	Vinyl ester	1000	0.10	08.933	10.595	11.400
20	Vinyl ester	1000	0.15	09.875	10.097	11.366
21	Vinyl ester	1000	0.20	08.996	09.899	10.289
22	Vinyl ester	1500	0.10	10.544	10.480	11.090
23	Vinyl ester	1500	0.15	09.153	10.569	11.199
24	Vinyl ester	1500	0.20	09.756	10.668	13.288
25	Vinyl ester	2000	0.10	09.432	10.393	12.639
26	Vinyl ester	2000	0.15	09.356	10.456	12.156
27	Vinyl ester	2000	0.20	08.289	09.754	10.887