**4.4.1 Feed rate oscillation in free form milling**

A free form tool path is described by an small straight line interpolation. The respective CNC program generated by a CAM software create an huge NC programs and it represents a great amount of information for the CNC machine to process in short periods of time. As a result, the CNC machine may have to reduce its feed rate to manage such large amounts of information. Therefore, the linear segment length is directly related to the feed rate during milling and, as a consequence, to the machining time. Better description about the topic can be found ahead in this chapter.
