Positioning tool for linear cutting machine tool

The utility model discloses a positioning tool for a linear cutting machine tool, and relates to the technical field of cutting machine tools. Comprising a base and a fixing block, the base is of a square structure, an operation table is installed at the upper end of the base, a cutting table is installed on the side, arranged on the operation table, of the surface of the base, a silk barrel is installed on the side, away from the operation table, of the cutting table, a sliding plate is installed on the operation table, and notches are evenly formed in the sliding plate; and two sets of fixing blocks are slidably connected to the sliding plate based on the notches, a preassembling assembly is installed in the middle of the fixing blocks, and a fixing assembly is installed at the top ends of the fixing blocks. According to the cutting device, an object to be cut is clamped and fixed through the two sets of fixing blocks, the clamping plates installed on the opposite sides of the fixing blocks are used for cla