NewCNCist
Materials
- Dec 13, 2011
- 3
I'm very new to machining, and the little experience I'm building is entirely centered around machining bisque fired and powder compact ceramics. That being said, I'm having a lot of difficulty machining aluminum (6061-T651).
I'm running a Haas TM-2P mill, with 6000rpm max spindle speed. I'm under the understanding that aluminum is generally machined at higher speeds than I'm capable of, and I have a copy of the Machinery's Handbook, but considering the results I've gotten trying to down scale parameters, using the book as a reference, to accommodate what my machine can do I'm clearly doing something (or a lot) wrong.
I've been trying to tap 1/4in-20 blind holes, a half inch deep, into predrilled 3/16in holes to no avail. I know that this isn't the ideal starting hole, but I figured since my work does not need to be precise that this would be workable. Am I wrong? Could someone please help me with a walk through (particularly feeds and spindle speeds that are possible for me??)?
Further info: I've shattered carbide core, TiN coated taps attempting this; am running under flow hydrolubric coolant; managed to produce one hole...but feed/speed was clearly off (produced a clean hole); any additional info for traditional surface milling is appreciated too, as that is what I will be doing next
I'm running a Haas TM-2P mill, with 6000rpm max spindle speed. I'm under the understanding that aluminum is generally machined at higher speeds than I'm capable of, and I have a copy of the Machinery's Handbook, but considering the results I've gotten trying to down scale parameters, using the book as a reference, to accommodate what my machine can do I'm clearly doing something (or a lot) wrong.
I've been trying to tap 1/4in-20 blind holes, a half inch deep, into predrilled 3/16in holes to no avail. I know that this isn't the ideal starting hole, but I figured since my work does not need to be precise that this would be workable. Am I wrong? Could someone please help me with a walk through (particularly feeds and spindle speeds that are possible for me??)?
Further info: I've shattered carbide core, TiN coated taps attempting this; am running under flow hydrolubric coolant; managed to produce one hole...but feed/speed was clearly off (produced a clean hole); any additional info for traditional surface milling is appreciated too, as that is what I will be doing next