1- Planning a CNC Program - The Planning Sheet
|The first and most important step in writing a numerical control part program is to carefully plan all the steps ahead of time. The procedure, called "Part Processing", is a method that forces decisions to be made about the part before actually writing the program.
In the graphic shown you will notice that process operations are described sequentially and give the machinist information about what machine to use and what machining parameters to use. For this simple example, the part needs to be cut from stock prior to being contoured on a CNC machine. After that, the part gets deburred and plated.
The machine to be used and the operations to be performed on the machine is the first step in the process.