Detecting Safety Zone Drill Process Parameters for Uncoated HSS Twist Drill in Machining GFRP Composites by Integrating Wear Rate and Wear Transition Mapping

Table 2

Drill tool dimension specifications.

Tool material	High speed steel
Tool diameter	10 mm
No. of Flutes	2
Point angle	118°
Helix angle	30°
Flute length	87 mm
Shank type	Cylindrical