What is Helix Angle & How to Calculate It – Helix Angle vs Lead Angle ...
The helix angle of a drill bit is defined as the angle between the screw flight of a helix and any line perpendicular to the screw axis or pitch. Different helix angles on drill bits are suitable for different applications, for example, the drill bit with a high helix angle is more effective for cutting soft and long-chipping materials, as a ...