Deep hole drilling is the process of machining holes ten times deeper than the hole diameter. ... This process involves the use of BTA Drilling and Gun DrillingGun DrillingGun drills (Through Coolant Drill) are straight fluted drills which allow cutting fluid (either compressed air or a suitable liquid) to be injected through the drill's hollow body to the cutting face. They are used for deep drilling—a depth-to-diameter ratio of 300:1 or more is possible.https://en.wikipedia.org › wiki › Gun_drillGun drill - Wikipedia, with additional processes designed specifically to meet very narrow tolerance limits and allow a high degree of precision and accuracy.Jan 24, 2019
What type of drills are used in deep hole drilling?
When drilling deep holes on a conventional CNC machine tool, there are three main options: a spade drill, a twist drill and a gundrillgundrillGun drills (Through Coolant Drill) are straight fluted drills which allow cutting fluid (either compressed air or a suitable liquid) to be injected through the drill's hollow body to the cutting face. They are used for deep drilling—a depth-to-diameter ratio of 300:1 or more is possible.https://en.wikipedia.org › wiki › Gun_drillGun drill - Wikipedia.Jan 1, 2015