Scallop Height
For some strange reason I wanted to know the resulting scallop height for different tip radius/feed per tooth combinations when facing off a part in the mill. It was quite a struggle for me to finally arrive at the formula with the help of some friends on the IRC. Andy pointed out that the result would only be true for the center of the cut where the tip is perpendicular to the path and the rest would be less, so this gives you the highest peak size.
For those that "want to know"
r = tip radius, c = feed per toothr-(r*COS((2*ASIN(c/(2*r)))/2))
The results were interesting (for me) to see in my spreadsheet with different combination.
never had to use scallop height, also had to look to see "what" it was. i'm guessing it is needed for 3-d milling?
i never had to do 3-d and still i look at youtube,others to see. it's amazing what ya'll can do
i have no machinesat home(and work never required it), but i have a cnc(small sherline) that can and been thinking about trying something.
beed trying to get a cad/cam program to convert a dxf file, but everthing i try doesn't work. because i need to learn A LOT
more about cad/cam. never used that before either
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Actually I wanted it for face milling to compare insert tip radius to feed to see what would give me a comparable finish to some extent. It is also useful when you are using a ball end mill...
Have you tried Sheetcam? It seems to do ok with DXF files.
John
never heard of sheetcam,will look for it thanks.
when i said 3-d, i know they use a ball mill. and scallop height to know the distant between passes.
the shorter the pass between passes leaves less ridges. if you can look very close to a 3-d product,
you can see the ridges
thanks again for sheetcam!
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well, thanks anyway, i'll get it sooner or later
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is there a site like pastebin for files ? thought i saw one somewhere.
found this
filebin.ca/xmztc/4PortAOA.DXF
don't know how long it will be there, says it can be
removed any time
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