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3D Contour Tool path

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2 replies to this topic

#1
edmBosto

edmBosto

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Had to switch from a 3D Contour path to a Surface finish project Tpath because the ball mill I used didn't follow the surface at bottom of cut. I couldn't figure out why but I had to go with what works so I switched to the surface projected path.

The geometry I chained for the 3D Contour was projected onto a compound angle. You could also see the variation in the Z depth by dynamically rotating the part looking underneath with the part shaded. Of coarse I scraped a part before I noticed.

Could this be because for the 3D contour to work correctly I needed to chain geometry at the center of the tool and not the edge? Or is this a bug. It was a 3D path because the ball mill was cutting an island and there was a compound surface at the bottom.

I'm running X4
Thank you all

#2
Todd Tracey from Fastech

Todd Tracey from Fastech

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Yes. You must drive the center of the ball on the 3D contour

#3
edmBosto

edmBosto

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Yes. You must drive the center of the ball on the 3D contour



Ah ha, the answer arrives. I may have known that a long time ago, don't know for sure but I can tell ya
your reply is greatly appreciated. Thank you.

It would have been a lot of work offsetting all those tiny splines. This geometry came from Key creator then from Surf cam, then to me in MCam. Doing a pocket with the original geo. then projecting it would have been the quickest way for me in this case I believe especially if I had to lie about the cutter size to get the correct size slots etc...

Cheers Todd