Factory Upgrade Solutions
Running a Previous Job in a CNC Mill
When a program is used on a machine, it usually stays listed in the machine's program directory unless someone removes it. These programs often start with an "O" followed by a number and typically include the name of the part they're designed to create. Programmers may assign these numbers in various ways, such as using the last digits of the part number or by sequencing them from the first to the previous program created.
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Once the right program is chosen, the next step is to determine the work offset, which could be G54, G55, G56, or similar, following that order.
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Then, it's essential to figure out the starting point (origin) of the part's measurements. This could be the center of the part along the X and Y axes, the top for the Z axis, or an edge. Specific features like a raised area (boss) or hole (bore) might also be reference points.
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Another step is to identify the tools needed for the job. This information might be listed at the program's start, or you can find the first tool by typing "T" and scrolling down in edit mode. Repeating this will highlight subsequent tools. Once all tools have been cycled through, a message will appear to indicate no more tools are listed in the program.
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Finally, adding a 2 to 3-inch positive Z length offset to the work offset is advised before running the program. This step helps ensure the machine operates correctly without causing any damage or producing defective parts.