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Machining aluminium
Posted: Thu 01 Mar , 2007 17:11 pm
by danmoon
Hello! We are having difficulties with aluminium block binding on the tool as it cuts. We are using a 2600pro and the ali (we are assured by our supplier) is free chipping quality. What is the recommended feed and speed for 1/4 " ball nose cabide cutter? Any advice will be greatly apreciated. Cheers, Dan
Posted: Thu 01 Mar , 2007 17:47 pm
by Denford Admin
Someone else will be better to tell you feeds and speeds, but I can recommend spraying the block with paraffin or similar thin oil - keeping the tool lubricated.
You also get this when the cutter is blunt
Posted: Thu 01 Mar , 2007 18:22 pm
by Steve
what speeds and feeds are you running at?
The centre of the cutter will have a lot slower surface speed than the diameter which will always make cutting in aluminium a little harder.
I would try about 12000 RPM and look at 600 to 800mm/ min.
Take the depth of cut to about 1 or 2 mm.
Depending what you are trying to do the problem can be caused by the chips being trapped and rubbed against the side of the tool causing friction.
Posted: Fri 02 Mar , 2007 12:39 pm
by danmoon
Thankyou for your comments gentlemen, we will have another go! Cheers, Dan