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Unified Toolpath using guide curves


JAMES GABEL
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I created a toolpath using unified on a 5 axis machine.  It was a round part with a boss on it and I had to cut -.0005 off of it all around.  I created a surface and a edge curve on the upper and lower edges of the surface.  I then created a dia  above the part to drive my tool from that curve.  I tried to enter -.0005 in the machining geometries offset and mastercam will not create the toolpath.  I put it at zero and it works fine.  Does anyone have any ideas why I can not machine to minus stock

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22 minutes ago, JAMES GABEL said:

I created a toolpath using unified on a 5 axis machine.  It was a round part with a boss on it and I had to cut -.0005 off of it all around.  I created a surface and a edge curve on the upper and lower edges of the surface.  I then created a dia  above the part to drive my tool from that curve.  I tried to enter -.0005 in the machining geometries offset and mastercam will not create the toolpath.  I put it at zero and it works fine.  Does anyone have any ideas why I can not machine to minus stock

These toolpaths will not accept minus stock along with any Moduleworks toolpaths. The cheat is to define the tool smaller by the different you want to cut in certain area. You can make copies of the tools and just change the diameter in areas where you want to cut smaller. Then when Mastercam ask do you want to force a tool change for duplicate tools you say no and know Tool 12 may have 20 different diameter defined because you have 20 different copies of the same tool to cheat like you doing, but will only get one tool change. It is a hack, but these will not accept negative stock and only way I have found to fake it in.

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