MACHINE FOR CUTTING SHEET MATERIAL Russian patent published in 1994 - IPC

FIELD: cutting parts of sheet material. SUBSTANCE: mounted on machine base is bed with longitudinal guides to support movable carriage with blank grips. Portal-shaped upright with cross beam carries movable carriage with vertical guide. Working tool in the form of plasma generator is moved along vertical guide by drive. Movement of all the moving parts of machine is controlled by control mechanism. Machine is provided with blank gripping unit. Sheet material is laid on bed, positioned and clamped by grips. Plasma generator with distance pipe is brought to contact sheet, which is cut with simultaneous movement of mentioned carriages. Compressed air fed to plasma generator for generation plasma arc passes between end face of distance bushing and sheet being cut and forces bushing to some insignificant distance from sheet thus providing for frictionless movement of plasma generator over sheet. EFFECT: improved efficiency. 2 cl, 4 dwg