NIMS CNC Machining Practice Exam 2025 – The Complete All-in-One Guide to Mastering CNC Certification!

The term "RAPID" G-code is used in CNC operations to designate movement that occurs at the maximum speed of the machine without regard for the cutting process. This means that during rapid movement, the tool is repositioning quickly to minimize non-productive time, allowing for efficient transitions between different operation points.

The primary purpose of rapid movement is to enhance the productivity of the machining process by reducing the time spent moving the tool between cuts. The machine's rapid traverse rate is significantly higher than the feed rate of the cutting operation, which prioritizes speed over precision or material removal during this phase.

In contrast, movements characterized by slow and controlled speeds are typically intended for actual cutting tasks, where precision and adherence to the programmed path are crucial for machining accuracy. Therefore, the distinction between rapid and cutting movements is essential for understanding the overall efficiency and effectiveness of CNC operations.