So on a lathe, a G17 would be the standard turning plane and, as for milling machines, this is the shape we tend to default the machine back into when it powers up. On a CNC lathe with live tooling or a mill-turn machine, we would use this G-codes to tell the machine which axis we are working on. When we select G18 or G19, the tool will be machining a radius off-the-table, going up and down the Z-axis, while we select the G17 command – normally the default plane – the tool will go around the machine bed.Īlthough planes mostly used when programming CNC milling machines, there are situations where CNC programmers are required to specify planes on CNC lathe application. Typically CNC programmers specify the working plane when the application involves machining radii. G19 if you are planning to work on in the Y&Z plane.G18 if you are planning to work on in the X&Z plane.G17 if you are planning to work on in the X&Y plane.When programming G-code on a CNC machine, we’ve got three planes (and codes) to choose from: In this new video provided by Tutor Marc Cronin, we will take a look at the tool planes that we use when programming G-code on a CNC machine.
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