Three-dimensional laser cutting machine tool

The utility model provides a three-dimensional laser cutting machine tool which comprises at least four base platforms, an X-axis left longitudinal beam and a Y-axis right longitudinal beam which are fixed on the base platforms, a Y-axis cross beam fixed on the X-axis left longitudinal beam and the Y-axis right longitudinal beam in a sliding manner, a vertical moving part fixed on the Y-axis cross beam in a sliding manner and capable of moving in a Z-axis direction, and a laser cutting head fixed at the vertical moving part, wherein the laser cutting head can move along with the vertical moving part in an X-axis direction, a Y-axis direction and the Z-axis direction, and is provided with a C-axis rotating round the Z-axis direction and an A-axis swinging round the X-axis direction, that is, The laser cutting head of the three-dimensional laser cutting machine tool can move in the X-axis/Y-axis/Z-axis direction as well as the own C-axis/A-axis direction, thereby realizing five-axis linage. Compared with a three-dimensional laser cutting machine tool adopting a worktable moving structure, the three-dimensional laser cutting machine tool provided by the utility model has the advantages of good dynamic response and high positioning accuracy. Besides, due to the design of the base platforms, the X-axis left longitudinal beam, the Y-axis right longitudinal beam and the Y-axis cross beam, the three-dimensional laser cutting machine tool can be used for processing large-scale long work pieces.