What does "CMM" stand for in tool and die making?

The term "CMM" in tool and die making stands for "Coordinate Measuring Machine." This device is used to measure the physical geometrical characteristics of an object. A CMM can be controlled via computer or manually, and it enables precise measurements of complex parts, which is essential in tool and die making to ensure that components meet their required specifications and tolerances.

In this context, a CMM is instrumental for quality control and inspection processes, allowing manufacturers to quickly evaluate the accuracy of manufactured parts, thereby ensuring that they are within the desired limits. The machine typically employs a probe that touches the surface of the object being measured, collecting data in three-dimensional space. This capability significantly enhances precision and efficiency in manufacturing processes, which are critical in the production of tools, dies, and other components.

The other choices, while they may feature terms indicative of related technologies or processes, do not correctly define what a CMM specifically is or its function in the realm of tool and die making.