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What would work best?
Stuff the 1026 DOM tube with bicycle inner tubes fill with steel shot. You might even get by with heavy heater hose all folded up and inserted in the bore.
Proturn - I agree with your plan B. Easier said then done.
Mtndew - We have been using VNMG style inserts at 250-400 rpm .01-.015 ipr. turning the part between centers.
I know that I need to call a tooling rep. I was just curious if anyone on this forum had any experience doing this. Thank you for all the reply's.
The first problem I see is the N in your vNmg. This is a neutral tool designed to give you 4 cutting edges but is not the most free cutting tool avalible. If you are profiling and need the shape of the v*mg stle insert maybe try a vcmt with a positive 7 deg rake, it has has 2 less cutting edges but may do a little better due to putting less force on the work piece. If you are straight turning and are not profiling maybe try a tpgt, 3 edges are better than 2.
Forgot to mention we face and chamfer ID on the ends of the tube before we cut the OD.Even if you turn the between center the od and the id are usually not concentric
We do not have a machine to do this. But thank you for the response.Leaving the tube stationary in a fixture and spinning appropriate TOOLING instead of the flexible and less-predictable tubing is what works 'best'. Think it through. Make it happen.
Bill
Removing .100" at most with a 100 to 125 finish. We are using a Fryer ET30 lathe.OP, you didn't specify how much material you're removing, and the finish that is needed.
As said above, a positive rake insert for finishing would help with vibration and chatter.
Is this being done on an Okuma lathe with a P200 or P300 control? If so, there is a simple macro to fluctuate the spindle to eliminate chatter.
Removing .100" at most with a 100 to 125 finish. We are using a Fryer ET30 lathe.
Stuff the 1026 DOM tube with bicycle inner tubes fill with steel shot. You might even get by with heavy heater hose all folded up and inserted in the bore. This should eliminate any chatter from OD turning. As for tooling follow the above comments.
Ken
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