We are going to try a new to me process but still unsure on the holding power. I bought a set of the Talon Grip jaws for a 6in Kurt vise.
I have 7L X 3.5W X 1.750H 6061al block I am profiling using a 2.000 diameter 90 degree face mill .336 depth of cut and taking that cut 5 times in Z also pretty much full width of cut in some areas of the part.
So my question is this expecting too much from just holding on to around .060 with the Talon grip jaws and not using HSM tool paths or will it have plenty of holding power?
First very important detail you left out: what machine are you doing this in?
OK, if your final Z depth is .336" x 5 = 1.68", then I would forego the facemill and use an HSM toolpath with a 1/2" or 5/8" EM.
Regards.
Mike
I completely disagree Mike. Even in a Speedio.
So much so, I am doing exactly what the OP proposes in my S300 because it is faster. Way faster. And, the chips are WAY easier to deal with.
When I gave the Yamazen apps guy the program he was like: "why don't you just rough that with an end-mill? These things are so fast."
I said: "just run it". Afterwards he said: "dang, that shoulder-mill is rippin'!"
It is loud though. That would be the only negative in my application.
FWIW, I use this technique ALL the time in Talon-Grips. I would definitely decrease the axial DOC to around .200" though.
You are going to want to slow your feed on inside corners if you have any.
If this was a pocket we were talking about. That would be a different story.
Also, I usually mill about .020" off the shelf the stock sits on, on the jaws to get me to about .080" holding depth.
If your stock has perfectly square corners? .060" is fine. But, watch that radius on extruded bar! It will bite you if your not paying attention!
I would also want to see 4 grippers per side on stock that size. And, tighten with a torque-wrench.
Sneak up on the torque until you have nice little "snake bite" witness marks from every gripper. You can easily over-tighten Talon-Grips.
If you tighten so tight that it lifts the stock? You are in the danger zone.