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What is deep hole drilling?

Author: Site Editor     Publish Time: 13-05-2022      Origin: Site

Deep hole drilling is where the hole depth to diameter can be upto 400:1 ratio. Deep hole drilling consists of two techniques: Gun Drilling & BTA Drilling.


GUN DRILLING

Gundrilling is a deep hole drilling process that uses a long cutting tool to produce holes in metal at large depth-to-diameter ratios.
Gun drilling is effective in diameters from 1 – 50 mm [0.04 – 2.00 in].
A gundrill tool differs from a conventional twist drill by its unique shank and head geometry;
a standard gundrill has a V shape groove to flash our chips and oil with built in coolant hole in the tool.

The gundrilling process is able to drill deep holes beyond what is possible with conventional machinery and tooling such as twist drills,
by using high pressure coolant for clean chip exhaust, even at extreme depths.



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