Red Seal Tool and Die Maker Practice Exam

What is the main purpose of a jig in machining?

1. To add decorative features to components

2. To guide the cutting tool and secure the workpiece

3. To inspect and test finished products

4. To reduce material waste during production

The correct answer is: To guide the cutting tool and secure the workpiece

The primary purpose of a jig in machining is to guide the cutting tool and secure the workpiece. Jigs are specifically designed tools that enhance the accuracy and efficiency of machining operations. By providing a stable platform and precise alignment, jigs ensure that the cutting tool is directed in a consistent manner, which minimizes errors and variations in the dimensions of the machined parts. This feature is essential for maintaining quality in production, especially when numerous identical components need to be manufactured. The guidance provided by jigs also allows machinists to perform repetitive tasks more quickly and with higher precision, as they do not have to manually align the workpiece for each operation. This streamlined process supports both productivity and the production of high-quality parts. Other options focus on different aspects of manufacturing that do not encompass the primary function of jigs. For instance, adding decorative features pertains to aesthetic enhancements rather than machining function. Inspecting and testing finished products is an entirely different phase of production focused on quality control. Reducing material waste, while important, is not directly related to the core purpose of jigs in guiding tools and securing workpieces during processing.