What is Deep Hole Drilling?

A deep hole is classified by having at least a 10:1 depth-to-diameter ratio. Deep hole drilling is widely used across various industries, originating from the necessity of precisely drilling straight gun barrels, where the depth-to-diameter ratio can surpass 20:1.

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Deep hole drilling requires special cutting tools designed to allow coolant to effectively circulate in and out of the drilled hole, facilitating chip evacuation. Most deep hole drilling procedures necessitate specialized machines that cater to these unique tools. These machines typically feature dual spindles that rotate both the workpiece and the cutting tool, enabling the production of highly accurate and straight holes.

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The two primary methods for deep hole drilling are BTA drilling and gun drilling, each serving specific operational requirements to ensure precision and efficiency.

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