Recommended Titanium Feeds and Speeds?

[griff]

Hey everyone,

I am looking to cut some small (10 mm diameter x 3 mm thick) titanium parts using my V2-50CHK. I was wondering if anyone has any recommended feeds and speeds working specifically with the V2-50?

Using a 1/8" 2FL square coated endmill (Harvey # 50208-C3), I have reviewed the speeds and feeds chart from Harvey:

SF_13900.pdf

and have come up with the following initial roughing parameters:
150 SFM (~4500 RPM)
0.00035 IPT (~3.2 IPM)
0.075" radial DOC
0.125" axial DOC

however, these numbers seem quite aggressive to me so I will definitely be lowering the depth of cuts for the first time around.

I’m curious about how low the calculated RPM is from their chart. In reviewing the forum, I found a post showing how the V2-50 torque drops off with spindle speed:

Speeds & Feeds - Torque

Cheers Mike ill take a look… Out of curiosity im trying to machine hardened steel. the PNC is capable to machine steels up to 35HRC. Can anyone show me an example of the tooling they used and some successful speeds and feeds they have used to cut steel with…thanks

and I guess this means I shouldn’t shoot for extremely high speeds in the interest of maintaining torque, but this still leaves quite a wide range of speeds to choose from. Is there any benefit to making use of the air-fed spindle and increasing my spindle speed (and therefore SFM) at all?

Thanks for your input.