Cutting machine for cutting aluminum alloy parts of doors and windows

The utility model discloses a cutting machine for cutting aluminum alloy parts of doors and windows, and relates to the related technical field of cutting machines, the cutting machine comprises a working table, a telescopic cylinder, a driving motor and a positioning block, the upper surface of the working table is fixedly connected with a supporting column, and the upper surface of the working table is fixedly connected with a clamping block close to the supporting column; the side, close to the clamping block, of the upper surface of the workbench is fixedly connected with a limiting sliding block, the side, away from the clamping block, of the upper surface of the workbench is fixedly connected with a positioning block, and the position, close to the positioning block, of the upper surface of the workbench is fixedly connected with a graduated scale. The fixing pieces are made to approach the surface of the aluminum alloy part, so that the aluminum alloy part is fixed, meanwhile, the protection pads are a