Re: [CAD_CAM_EDM_DRO] recommended chip loads for Al

motoproto wrote:

> Group,
>
> i'm trying to maximize milling efficiency, and i need to know where
> to look to find recommended chip loads for different materials and
> cutter diameters. i've found great online calculators for rpm, ipt,
> sfm, etc., but i'm having trouble finding info on recommended chip
> load for different materials and cutter diameters. i have a maxnc,
> and i'm using small (.0625 dia) cutters in aluminum.

I have a plastic, slide-rule type calculator that was made for
McDonnell-Douglas, and turned up in a local scrap yard. There is a
guy selling them on eBay. They have all of these things in them.


But, I can give you the formulas it uses. For aluminum alloy and end
mills, it recommends a chip load of .010" per inch of tool diameter.
So, for the .0625" end mill, it would come out to .0006" feed per tooth.
For mild steel, it suggests .006" x tool dia, for tool steel, about half
that.

Jon