spinning turning tools?

[YoDoug®]

Anyone try one of these yet? looks interesting but I would like to hear more about it.

 

[Justin Beebe at Folsom Tool]

Looks cool I'll show the lathe guys tommorrow.

[Brad Lisle]

sounded like chatter. would be interested in finish quality,or is this just for roughing? I have used groove-turn tooling from kennametal on ti-6al-4v with great success. But turning the od in a single direction away from the spindle I don't see how this tool would be more ridged and stable than a good turning insert.

[YoDoug®]

What I have read is with the right tool it is more rigid because it transfer load back into the turret. There is a much better video of it on youtube from Esprit. They are working with Mori on developing toolpaths for this kind of tool. I just didn't want to post a video from Esprit here. I also read that because the tool is spinning you can run a higher sfm without burning up prematurely.

[jeff]

I don't know about you guys, but I can turn aluminum a heck of a lot faster than that video did,and with a regular turning tool.

Besides, how good can it be when they can't even spell "lathe" correctly?

[chris m]

I don't know what material that is, but the grooving tool was singing, so I am guessing it is something hard. They state that is works better for 'hard materials' so I doubt they're looking at aluminum. We turn stainless at .150DOC .012 or .014 per rev with CNMG 432 tools pretty easily, so unless they can up the surface speed somehow with that tool I am not sure exactly where the benefits come in, particularly where you can't turn to a shoulder like that. The spindle sounded like it was ripping in that video for sure.

 

C

[YoDoug®]

Those were my thoughts exactly Chris. We turn .12 DOC in hard materials all the time with CNMG inserts so there has to more to it or why would Mori be wasting the time on it.

[jeff]

I'd bet the farm that it's aluminum in that video, the chips just look too "bright" to be steel.

Although, I may be wrong.

[taperlength]

Looks like you could get a very good surface finish with a fast finish cut that way.

 

Now if the tool was mounted axially instead of radially it would be great for doing face grooves or flatbottom bores.

 

For simply roughing the outside diameter, nothing beats pinch turning with two turrets.