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So you changed from a DCMT style insert to a CCMT style insert. Probably a better explanation that pointy inserts 😂. I wonder how a round insert would fare?
Thanks for your input, the original works fine on a very light cut, but if pressure is applied for a deeper cut, a wall is created & builds onto the face of the carbide. So I tried the higher rake, which works to an extent, being a Negative Rake, whereas others say the best is a positive rake. When my new mill comes in shortly, I'll try the positive rake to see how it goes Otherwise both of the carbides give a very smooth finish
I think I’m having a problem with my mill where I think the quill is hopping up and down. I’m getting a lot of vibration and I’m tying everything down that I can, but flycutting right now is pretty scary. lol
G'day. Thanks for your Input & question. First you need to check make sure you have minimal backlash on your fine feed on the quill. Check out my video on the Quill Modification. Also in some cases you need to slightly preload the quil when using fly cutter or endmill etc If you are still having problems you will need to possibly first try to tightness the top quill nuts, where the draw bar is. If that is ok, then you might have to fit New Spindle Barings with shims etc. Hope this helps a bit.
Hello Ted,
Nicely modification there, well done.
Take care.
Paul,,
G'day Paul. Thanks for your comments, greatly appreciated. High negative rakes throws the chips out ok.
Will do a few jobs with it & see how it goes.
That came up really well Ted!
Max’s suggestion looks to have been well worth the expense & effort.
I think I will do the exact same for mine. 👍👍👍
G'day Ian .. Thanks for your comments. That took a mm off with ease, remembering it is alloy on the test Have you ever known Max to be wrong .lol
@@TedRoza Nope, not yet anyway. 👍
So you changed from a DCMT style insert to a CCMT style insert. Probably a better explanation that pointy inserts 😂. I wonder how a round insert would fare?
Thanks for your input, the original works fine on a very light cut, but if pressure is applied for a deeper cut, a wall is created & builds onto the face of the carbide. So I tried the higher rake, which works to an extent, being a Negative Rake, whereas others say the best is a positive rake. When my new mill comes in shortly, I'll try the positive rake to see how it goes
Otherwise both of the carbides give a very smooth finish
I think I’m having a problem with my mill where I think the quill is hopping up and down. I’m getting a lot of vibration and I’m tying everything down that I can, but flycutting right now is pretty scary. lol
G'day. Thanks for your Input & question.
First you need to check make sure you have minimal backlash on your fine feed on the quill. Check out my video on the Quill Modification.
Also in some cases you need to slightly preload the quil when using fly cutter or endmill etc
If you are still having problems you will need to possibly first try to tightness the top quill nuts, where the draw bar is. If that is ok, then you might have to fit New Spindle Barings with shims etc.
Hope this helps a bit.
Also vibration is very dependant on the speed you trying to mill at. Try lowering the speed to decrease vibration.