Fixtures and jugs are tools used to quickly fasten workpieces and guide tools during processing, so that the tooling machine, the tool, and the workpiece maintain the correct relative position. Jigs and fixtures are an indispensable part of machining tooling. Machine tool technology is constantly being driven in the direction of high speed, high efficiency, precision, compounding, intelligence, and environmental protection.

In the machining process, as the tool cuts off the unnecessary material from the workpiece, a cutting force will be generated on the workpiece. To resist the cutting force and allow the cutting process to be completed, the workpiece must be firmly clamped on the machine tool. The device that positions and clamps the workpiece is called a fixture. The device that holds and guides the cutting tool is called a jig.