What does the term "interpolation" refer to in CNC operations?

Interpolation in CNC operations refers to the calculation of intermediate points between specified locations. In CNC machining, machines need to move along a specified path to create the desired shape or component. When CNC programs define a path from one point to another, interpolation is the method through which the control system determines the multiple positions and movements that the machine must follow to achieve that path smoothly and accurately.

This process is critical because it allows for the precise movement of the cutting tool across various axes, ensuring that the tool follows the programmed geometry—whether it be linear or circular—effectively. By calculating the intermediate points, the CNC system can create a continuous motion that is vital for achieving high-quality finishes and accurate dimensions.

Other choices revolve around processes that are related to CNC operations but do not define interpolation. Programming complex shapes involves more than just interpolation; it involves defining a geometry or path itself, while cutting materials focuses on the physical action of machining. The arrangement of parts for machining refers to the setup of the workpiece and tooling, independent of the path the tool will take.