The gun drill is composed of carbide drill bit, drill rod, and driver, which can be suitable for most of material processing, such as cast iron, stainless steel, aluminum, graphite, wood products, and all kinds of nonferrous metals. The gun drill is a single flute cutting tool, the hole needs to be guided by the guide bush. With the development of the CNC machine industry, gun drill tools are suitable not only for their own use, but also for CNC lathes and machining centers.
Gun drilling has the following advantages:
The working principle of gun drill is that the cutting fluid is supplied to the cutting part through the cooling channel inside the tool, and the cutting fluid and chips are discharged through the V-shaped channel formed between the machined hole and the drill rod. At the same time, the cutting fluid also provides lubrication for the outer circle of the drill bit.
The patter of drill tool is divided into standard gun drills and non standard ( step gun drills, spherical gun drills, etc. ). Coating and PCD gun drills, overall solid carbide drills, and indexable insert gun drills etc are all available. Shin-IL company can produce drill tools with diameter of 1mm-50mm, the length ratio is more than 250x, and the longest length can reach 5000mm.