Traveling steel pipe cutting machine of milling type

A traveling steel pipe cutting machine of a milling type for cutting a pipe while traveling in synchronism with the pipe as the pipe is being fed, said machine comprising:

• a plurality of cutter heads each having a milling cutter rotatably mounted thereto, and means for rotating said milling cutter;
• respective guide means for supporting each of the cutter heads in the machine in a manner in which each of the cutter heads is linearly movable in biaxial directions;
• respective feed drive motor means for feeding each of said cutter heads in said biaxial directions;
• clamping device means disposed proximate the milling cutters for clamping a pipe to be cut by the milling cutters;
• a traveling-type of truck on which said cutter heads, said respective guide means, said respective feed means and said clamping device means are supported;
• and
• control means for controlling said respective feed drive motor means, on the basis of input cutting condition data that is representative of at least the shape or dimensions of the pipe to be cut, to move said cutter heads in a manner in which the milling cutters thereof can be utilized simultaneously to cut different portions of the pipe.