Speeds and feeds for dynamic milling D2

[crazy^millman]

17 minutes ago, Goldorak said:

i can go up to 12.5%, i am crazyer lol 

Really going to come down to many factors.

#1 The Spindle Taper Cat 50 Big Plus or HSK100 or HSK125 have the best damming effects with a Super Heavy Duty Hydraulic No Slip Style Chuck with Through Spindle 1000 psi coolant.

#2 The setup and shape of the part. Thin wall thin floor part that doesn't allow for harmonics to be introduced back into the cut come into play. Did a Ti project earlier this year. I rough everything down on a big cross section to .25 since 90% of the material is coming off. Problem was the harmonics was coming back into the part and effecting tool life as we stepped up. I changed it up and left a big section to take off after the step up and increased tool life by about 40% just doing that. Speeds and Feeds never changed I just rethought the process. That is what I do a lot with the HST toolpaths. I see what the part, the tool and the machine are telling me if I am onsite running it or while a customer is running it. I have programming 60 hours roughing cycles in Ti and not even set foot on the floor and they run them untouched. Not easy to think all of that though and make it work, but thanks to the Lord for giving me the ability to do such things. Point is see what you can get away with. Would I go from 5% to 12.5%? No I would go up to 7% and see what happens. Then I would go up to 10% and see what happens. Then go from there. A lot of what we do it short run parts so a predicable good way to to do it is where I normally shoot for. One long term project a predicable controllable process that might be 5% slower than if we really spent 3 or 4 weeks going after to get it 100% tuned is better than doing exactly that spending the 3 or 4 weeks to get it maximized. Every process and project presents it on things to consider and at the end of the day you know what you know.

[Dan_AKA_ROY]

^ Crazy like a fox. lol

Helical Solutions...yep, that's my EM in use. Almost done. Driver side part came out very nice. Did what I instructed,... albeit a bit slow. Pass side about 2/3rds done.

Time isn't a concern, really (we're not a machine shop, so no deadlines and such). I'll have them both finished before the day ends. Started around 11:00. Took lunch at 1:30 and set up and started the 2nd part.