Method and device for working cavity walls in continuous casting moulds

For such machine tool for processing also continuous casting crystallizer (7) of the plural, comprising a cutter and/or the polishing tool (12). ; The machine tool with be is arranged in the cavity of the support tool (12) arm (6) and a clamping crystallizer (7) of the working table (8) and production tool for (12) and guiding device between numerical control relative motion composed of. In the cavity is along the cross - section longitudinal and/or outer appearance of changing the situation of the further obtains the working high precision; the cavity is in the special parts situation to obtain the working high precision according to stipulate, the combined implementation tool (12) moves about (6) on the vertical axis (4) rotating along the arm (6) vertical axis (4) is axis (13) and a rotary arm.