8Pcs End Mill Bits HSS CNC End Mill Cutter Drill Bits for Wood, Aluminum, Steel, Titanium, Straight 4 Flute Mill Bit Set 1/16"-1/2" by Oudtinx. The depth of cut will be a function of spindle HP and rigidity, try 1/8" to start. by Oudtinx. try the following: climb mill with a ½" diameter three-flute coated carbide end mill for aluminum.

I'd slot aluminum with a 1/2" three flute aluminum geometry endmill, perhaps in top gear 2720 RPM, lock the Y axis then feed it at 30-40 IPM. This is because aluminum alloys leave a large chip, and chip valleys become smaller with each additional flute on an end mill.
If you're not using coolant try WD40 (one thing it is good for is machining aluminum). For peripheral rough milling, the following feeds and speeds will work well as a starting point. But when I go out to the garage and use my mini mill and the lathe, the top R.P.M. Once you have gummy aluminum deposits on your cutting edges, that tool is not long for this world, especially not at 20,000 rpm or more. of 12,000. The RPM formula for tapping is no different from the other formula we have been using, but the consideration mentioned for tapping must be made before we actually do any power tapping. Say it’s got a spindle capable of 24,000 rpm, but it will go no slower than 12,000 rpm. I am a novice and trying to get a good finish on 6061 aluminum flat surfaces. Different aspects of the tool were engineered for the separate difficulties of machining aluminum quickly. Now let’s take a CNC Router example. This requires a special endmill that will cut along the entire bottom edge. Determine the spindle speed (RPM) and feed rate (IPM) for a milling operation, as well as the cut time for a given cut length. Your machining center ideally will have spindle capabilities up to 18,000 rpm and feedrates of 200 ipm. FREE Shipping on … To attack the chatter problem, the flutes of the SharC Mako are not evenly spaced. due to the diameter and on the next machine run a small end mill at the machines maximum R.P.M. Clamp the aluminum down to mill holes. Not going well. Aluminum wants to stick to the tool. This endmill can be used for flat-bottom holes and will work better than a drill. End Mills are used for making shapes and holes in a workpiece during milling, profiling, contouring, slotting, counterboring, drilling and reaming applications. is limited. Milling operations remove material by feeding a workpiece into a rotating cutting tool with sharp teeth, such as an end mill or face mill. This is similar to drilling holes, but using a center cutting endmill in place of a drill bit.

PREMIUM CARBIDE MILL SPEED & FEED 4-F1ute - Ball Nose End Mills CHARTS Aluminum Alloys Carbon Steels Alloy Steels Tool Steels 285-275 Bhn Cast Iron RPM 7300 4900 3600 2900 2400 1800 1430 1200 1000 920 810 730 O.3D Material Hardness Diameter 3/32 1/8 5/32 3/16 1/4 5/16 3/8 1/2 9/16 5/8 11/16 13/16 Carbon Steels Alloy Steels Tool Steels <285 Bhn RPM


I am using a spindle speed of 1200 rpm. For aluminum alloy (2024, 7075, 6061, etc.) 99. With higher flute counts, it would become difficult to evacuate chips effectively at the high speeds at which you can run in aluminum.

At work we run aluminum at very high R.P.M. In fact, it will do so to the point that it welds itself to the tool. They are designed with cutting teeth on the face and edge of the body and can be used to cut a variety of materials in several directions. The company’s “Mako” end mill (part of its “SharC” line) is an example of a tool designed specifically for high metal removal rates in aluminum. End mills for aluminum are often available in either 2 flute or 3 flute styles. I've run big diameter parts at two thousand feet per minute, which is actually a slow R.P.M.