Deep drilling machine

Particularly deep holes are drilled in metal workpieces on deep drilling machines . A number of specific deep drilling processes are available for this purpose, for which special machine tools are required.

Deep drilling machines are similar in structure to a conventional lathe and essentially consist of two assemblies. On the one hand, this is the actual machine and a tank and cleaning system that provides the cooling lubricant required in large quantities, feeds it into the process and then cleans it again.

On the machine bed, on the tool side, there is a movable headstock that realizes the rotary and feed movement of the drill, some steady rests to accommodate damping elements and another slide that accommodates the drilling oil supply device (BOZA) for the BTA deep drilling process and the chip box for the single-lip drilling process . On the workpiece side, which can also be designed as a table, clamping elements are provided corresponding to the workpiece. In the case of rotationally symmetrical workpieces, a further spindle box can also be attached here in order to rotate in the opposite direction, i.e. H. rotating workpiece and tool to be able to work.

Depending on the deep drilling method and drilling diameter, the machines can have a total length of up to 45 m. Bores from Ø 0.8 mm up to 1800 mm can be machined in lengths up to 250 times the drilling diameter.