What Industries And Tasks Are Gun Drill Machines Optimal For?

By Tim Uphaus

Gun drills are the most accurate, fast and capable type of drills that manage to cut deep holes on metal materials through a controlled release of highly compressed fluids. Those drills are the only ones that can bore holes of depth to diameter ratios of about 350.

These rods have a hole on their front hardened tip from which the fluid flows at high enough speeds to cut strong materials with remarkable accuracy. The chips that are produced by the cutting process are removed through the use of coolants that also flow inside the bored hole. This also helps keep the drilling temperatures at a lower than melting level.

Features

The tip of the gun drill itself is the point that is called to withstand the deformation forces generated by the extreme pressures. For this reason, gun drill manufacturers choose the strongest metal alloys and composite materials that stay unaffected by intense pressure and sudden temperature changes for many years of operation.

In order for a gun drill to deliver the required levels of drilling accuracy, everything has to work precisely as intended and the affecting factors must all be carefully calibrated. This suggests for extreme manufacturing quality and the cost is naturally the equivalent. The speed with which gun drill machines can cut through rigid metals such as steel can reach up to 75 cm per minute. This makes up for the increased cost as speed of processing dramatically increases.

Applications

Gun Barrels Making

The most common application of gun drilling machines is for boring gun barrels. This is exactly where those tools got their name from after all. All gun barrels feature the high depth to diameter ratios that only gun drills can realize.

Gun drilling machines are ideal for the particular application as the perfect finishing of the inner surface of the gun barrel ensures the unobstructed and unaffected trajectory of projectiles. Moreover, the accuracy of the cuts ensures coherent barrel thickness which subsequently means homogeneous heating and thus less cracks and longer lifetimes.

Creating Molds

Another case that gun drilling machines can come in handy is that of the molds manufacturing. As molten metals have to flow into casting molds through a deep hole, gun drills are used to make that opening.

Tool Manufacturing

Hardened tools made out of chromium and vanadium steel can only be successfully processed by high precision tools among which are gun drills. These are ideal for boring deep holes that can be used for the fitting of extensions and adapters. Usually, these are done in a polygonal shape to increase the torque friction.

Making Musical Instruments

Last, gun drilling machines are extensively used in the music instrument manufacturing industry and especially for wind instruments that require deep holes of small diameter. These instruments can be flutes, oboes, bassoons, saxophones, clarinets, trumpets, ocarinas and reeds. As most of these instruments are made out of brass and other soft metals, gun drill machines are required to work with precision and delicacy as the slightest deformation will result in wrong tonal performance.

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