Deep Hole Drilling and Machining
Deep hole machining
Deep hole machining means to make holes ten times deeper than hole diameter. There are a variety of different CNC or machine set-ups to do this. The most common method is rotating the work pieces on turning method. Rotating tool is also possible.
The gun drill, originally developed for building gun barrels, is a machine tool that is specifically used for such operations.
Methods and Tools
Whichever method and tool, the usual standards of drilling are the same. The quality depend upon correct choice of tool, rotate speeds and feeding method.
Crucially, the cooling, chip breaking, and removing the chips from a long tool are all deeply important. They are the difficulty as well as essential know-how, involved in producing a good deep hole.
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