Gundrill Construction: Gundrills consist of three elements: 1) a carbide tip, 2) a heat treated alloy shank, and 3) a steel driver -Typically silver brazed together and ground as one precision unit.
The process can be made affordable even for small shops with their various production requirements. Gundrilling can be done on CNC machining centers, lathes and milling machines with relatively small investment. It can also be used with special formed shapes in blind holes for bottom forming with a minimum of machine revisions. More about Gundrill for Deep-Hole Drilling: Gundrills can make holes of exact specified size, with precision tolerances, produce burr-free holes. Looking at the present increasing need from various industry sectors, those who are in metal cutting, Accusharp, this year, decided to make Gundrills to meet the industry requirements. This operation produces deep holes with precision, high surface finish, and can maintain repeatability of the process. Gundrilling is an ideal solution for most of the deep and high precision drilling projects. And since then it became widely popular in other industry sectors, as well. Because of the high capabilities of this innovative ∝eep Hole Drilling Concept, it was but natural, that various industrial sectors got attracted to assess its appropriate extended use for their metal cutting applications. And since then, this type of drill is known as Gundrill, even if subsequently it is being used for other industry requirements and applications. The Gundrill was developed to drill such long, straight holes of high accuracy dimensional requirements. This typical drill was initially developed 100 years back in Germany, to drill Gun barrels having 5.56 mm (0.223 inch) bore caliber barrel of rifles with 508 mm (20 inches) length, - nearly 100 times the diameter of the bore. As it can cut small diameter and long length holes, the Gundrill can be also suitable for very deep hole drilling to machine parts as up to a 300:1 depth-to-diameter ratio. Not only it drills 200 times deep, but also with the precision tolerance of hole size, roundness, straightness, concentricity and surface finish in one pass. However, using a Gundrill one can make a ∝eep hole of much longer depth even 200 times the drill diameter. As a matter of fact, it is difficult to drill a straight and accurate dimensional hole of a depth more than about five times the diameter using a standard twist drill. drills, end-mills, reamers, cutters, burrs, form tools, step drills, etc. Since 1999, Accusharp is in the activity of manufacturing metal cutting Round Tools like Carbide and H.S.S.
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