What is a jig in machining?

A jig in machining is specifically designed to hold the workpiece securely in place during various machining operations. This allows for increased accuracy and repeatability by ensuring that the workpiece is consistently positioned so that the machining processes – such as drilling, milling, or cutting – can be performed correctly. Jigs often incorporate features that guide the cutting tool, enhancing the precision of the operation.

The other choices focus on different aspects of machining. While a cutting tool is essential for performing the actual material removal, it does not serve the same purpose as a jig. A method of measuring dimensions relates to ensuring that parts are within specified tolerances but does not help hold the workpiece. Software for machine programming is crucial in CNC operations but has no physical role in positioning or securing the workpiece as a jig does. Understanding the unique function and application of jigs is vital for effective machining practices.