![]() 125 to 2.00 inches with l:d ratios off 200:1 or less.Īt Basilius, we’ve had a gun drill in our shop for a few decades. More common for standard gun drilling equipment is hole sizes from. ![]() Using the gun drilling process, it’s possible to get l:d ratios up to 400:1 using specialty gun drilling equipment. During drilling the drill moves through bearings to stays supported as the drill advances. In gun drilling, the drill is supported at the beginning of the hole. Therefore, the depth limit is also set by the length of the drill and possibly by limits of axis movement on the machine. In standard drilling operations, the drill is fixed to the spindle at one point on the drill. ![]() The oil gets separated from the chips and recirculated through the process.Īnother unique aspect of gun drilling is the way the drill is supported. The chips and oil are then collected in the base of the machine. The oil is used for lubrication and cooling initially but as it comes back out of the hole it carries chips back out to keep the hole clean. This is due to the high-pressure oil being directed right to the cutting surface. The unique design of our TechniDrill gun drilling machine provides the ability to keep the cutting area cool and remove chips effectively at high length to diameter ratios. 500 hole to be 48 inches deep (l:d of 96:1). This is a great system but imagine you needed a.
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