Page 11 - Demo

9 GENERAL DRILLING HANDBOOK%u00bd%u0009Drill TerminologyDrilling is one of the most common methods for machining holes in various materials. The process involves using a rotating cutting tool, known as a drill, to remove material and produce a hole. Drilling can create various types of holes with different end conditions and degrees of passability on different surface locations.In addition to drilling, some drills can sometimes be used for enlarging the diameter of existing holes in certain cases.The design of a drill is critical for ensuring the accuracy and efficiency of drilling operations.A drill is primarily composed of two main sections: the cutting part (also known as the body) and the clamping part. The design of a drill consists of three main elements (Figure 1.2.1):%u2022 Major cutting edges %u2013 intended for cutting the material by removing chips.%u2022 Flutes %u2013 designed to channel away chips from the cutting area.%u2022 Shank - intended to clamp the drill in the tool holder.Figure 1.2.1Major cutting edge FluteCutting part Clamping partShank