What is a block in the context of NC part programming?

In the context of NC (Numerical Control) part programming, a block refers to a single line of code that contains commands and parameters necessary for the CNC machine to perform a specific action. Each block is part of the program that directs the machine on what to do—whether it's moving to a specific position, executing a tool path, or controlling spindle speed. Blocks are typically organized in a sequence, where each line (or block) represents distinct instructions that contribute to the overall machining process.

This concept is foundational in CNC programming because it allows programmers to break down complex operations into manageable instructions, which the machine can interpret effectively. Each instruction in the block is structured to communicate important details to the machine, enhancing precision and aiding in the automation of the manufacturing process.