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Why do I get large circular paths in my posted GCode?


So I have been doing a bit of modelling in Autodesk Inventor 2016 and using the incorporated CAM software.  When it comes to post processing, I have been using the acramatic.cps – Generic Acramatic post configuration.  I am still waiting to hear back from Primero as to the best post configuration for their machine, but if anyone knows that would be great.  The NC code that comes out has some irregularities as it contains circular interpolation that should not be there, causing large circular paths that deviate significantly from the tool paths that Inventor had shown.  There are a number of circular paths that occur but among several thousand lines of code it is difficult to determine which ones should not be there.  If anyone knows what might be causing these rogue circular paths, that would be fantastic!

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Best Answer

The arc options in your post are probably different from the options on your machine controller.  This article from our GCode course explains a bit more about that:



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