The utility model discloses a fixture applied to an additive and subtractive manufacturing
machine tool, which relates to the technical field of fixtures, and comprises a
cam synchronous supporting mechanism, a centering clamping mechanism and a
machining base station, and the horizontal plane positioning of a
machining surface in the
machining process of a workpiece and the supporting problem in the subtractive
machining process are optimized through the
cam synchronous supporting mechanism. Meanwhile, the positioning principle of the
cam mechanism is simple and reliable, and rapid repositioning after resetting under the conditions of extra workpiece detection and the like can be supported; the positioning principle of the centering clamping mechanism refers to a three-jaw chuck, through synchronous movement of three clamping blocks, rapid and accurate positioning of a machining
machine table is achieved, the positioning principle is simple and reliable, and rapid clamping and taking down of a machined workpiece can also be achieved. According to the clamp applied to the additive and subtractive manufacturing
machine tool, rapid and accurate positioning of the machining base table is achieved through a simple mechanical structure, machining positioning of the base table is simplified, meanwhile, the machining base table is simple in structure, large in machining area and easy to position, and after being matched with the clamp, supporting is stable, and machining precision is high.