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I take scallop to mean that the package chooses a variable stepover to maintain a constant scallop height, giving a consistant surface roughness. It's always difficult to interpret CAM options across packages, but of those shown I think the relevant ones are scallop, spiral and radial.
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I'll give it a whirl and see what happens
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Use some paraffin on the job particularly with the ballįigures are for my 5000rpm spindle so you can up the speed and feed keeping the same chipload. On the adaptive I would use a 6mm 3-flute cutter 10000rpm and 1000mm/min feed 6mm max stepdown, 0.5mm fine stepdown a s you are using a small 3mm cutter to follow up and the adaptive stepover of 0.6mm. I usually use a4 flute ball nose for this sort of work so I can feed faster Go with the full 10K rpm and feed of to give a chipload of 0.02mm to 0.03 so 400-600mm/min. This may not cut the flat outer area so a 3D horizontal will finish that off 0.1 or 0.2mm stepover So I would start with a scallop which will give even stepover. The ideal option for the rest would have been steep and shallow but that is paye foreven with the non free version, I usually set the adaptive to leave 0.3mm then the contour is done with one roughing pass at 0.2mm stepover leaving the final finish pass to remove 0.1mm I would use a 2D contour to finish the main outer diameter. I'll be using a 3mm ball end 2 flute cutter and the spindle can run up to 10,000 rpm.Īny suggestions including feeds, speeds and step-overs for initial attempts would be gratefully received. There are a lot of alternatives even in the free to use version! To this end I have drawn a simple test piece to be cut from 1" square aluminium alloy:Ī 3D adaptive clearance should rough it out OK but I am at a bit of a loss as to what to choose for finishing. I have decided that it's about time I investigated the 3D milling capabilities of my Denford/Sherline Mach3 converted mill.
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