During the drilling operation, it would seem that there is no complex machining problem to improve the productivity, but the following three important factors will directly affect the drilling speed, tolerance, and tool life, i.e

When a mechanical machining process engineer selects a drill bit for a specific hole machining task, the first consideration is the depth of the hole to be machined. The deeper the hole to be machined, the greater the amount of chips that need to be discharged during the machining process

In an effort to meet the users' demands to improve production efficiency, tooling manufacturers are continuously innovating in the design and manufacturing strategies of various drilling tools.

High-speed steel straight shank twist drill is adopted to machine miniature holes(1mmand below), breakage is the main form of drill failure. Since drill breakage occurs suddenly and is difficult to predict in advance, and the broken drill often gets stuck in the incomplete hole, it is difficult to take out, which causes a lot of trouble in production, and also makes it difficult to realize automated drilling of miniature holes.

Twist drill is one of the cutting tools with large consumption. The semi-enclosed cutting environment and special geometric structure of the twist drill make the drilling temperature higher than that of lathe and milling under the same cutting conditions.