GAS CUTTING-OFF APPARATUS

PROBLEM TO BE SOLVED: To provide a gas cutting-off apparatus which can cut off a preset position by turning a workpiece. SOLUTION: The gas cutting-off apparatus 1 includes a table 10, a supporting base 20 for supporting the table 10 so as to elongate its rotational axis L in the vertical direction, a rotationally driving means for turning the table 10 supported by the supporting base 20, and a gas cutting-off tool which directs a cutting-off nozzle 40 toward the workpiece W at the position on the side of the supporting base 20. The supporting base 20 has a plurality of supporting pillars 21 arranged side by side at a constant angular interval about the rotaional axis L, a plurality of cross beams 22 which are arranged on the upper end portions of the supporting pillars 21 arranged at the opposed positions on both sides of the rotaional axis L so as to elongate in the radial direction, rotationally supporting means 15, 16 which are arranged at the middle positions of the cross beams 22 in the longitudinal direction, and support the table 10, a plurality of connecting beams 23 to be arranged between the upper ends of neighboring supporting pillars 21, and auxiliary rollers 25 which are arranged at the middle positions of the connecting beams 23 in the longitudinal direction, and are brought into contact with the lower surface of the table 10. COPYRIGHT: (C)2009,JPO&INPIT