machining technology - jig & fixtures

In metalworking, a jig is a type of tool used to control the location and/or motion of another tool. A jig's primary purpose is to provide repeatability, accuracy, and interchangeability in the manufacturing of products. A jig's main function is to guide the tool during machining process. A jig is often confused with a fixture; a fixture holds the work in a fixed location. A device that does both functions (holding the work and guiding a tool) is called a jig.

As the CNC technology grows rapidly, with the ability to move according to exact path generated from NC code, the use of jigs is beginning to decrease. Nevertheless, the fixtures still greatly needed to set-up the workpiece faster.
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