01-07-2015, 07:54 PM
Darren,
I'm not recalling what I had posted elsewhere, so help me out with that.
As for the VG112 grooving tool and it's inserts, it's not uncommon for 1018 steel to act more like a 300 series stainless in terms of chip control because it's such a stringy steel. Is it grooving and parting the 1018 that you are referring to, or is it turning where you have issues, or....both? Is it a matter of chip control or tool life?
Manufacturer's recommendations are based upon their tests in given materials. With a lathe such as yours, it's impossible to duplicate or even "imitate" their results due to the low cutting speeds and (I think) you also don't have known feed rates. When a guy like Russ looks up recommended parameters and can program a machine to the given values, it's a whole different ball game. Those recommendations are meant to get you close, then one adjusts speed, feed and depth of cut to get the productivity dialed in to their needs. Some shops will favor maximum material removal rates over tool life, quite the opposite with most home shops. Chip control is important in both environments because it's a safety issue. No one wants long stringy chips wrapping around the work piece, the machine, nor (especially) the operator.
Shoot more questions anytime!
Ken
I'm not recalling what I had posted elsewhere, so help me out with that.
As for the VG112 grooving tool and it's inserts, it's not uncommon for 1018 steel to act more like a 300 series stainless in terms of chip control because it's such a stringy steel. Is it grooving and parting the 1018 that you are referring to, or is it turning where you have issues, or....both? Is it a matter of chip control or tool life?
Manufacturer's recommendations are based upon their tests in given materials. With a lathe such as yours, it's impossible to duplicate or even "imitate" their results due to the low cutting speeds and (I think) you also don't have known feed rates. When a guy like Russ looks up recommended parameters and can program a machine to the given values, it's a whole different ball game. Those recommendations are meant to get you close, then one adjusts speed, feed and depth of cut to get the productivity dialed in to their needs. Some shops will favor maximum material removal rates over tool life, quite the opposite with most home shops. Chip control is important in both environments because it's a safety issue. No one wants long stringy chips wrapping around the work piece, the machine, nor (especially) the operator.
Shoot more questions anytime!
Ken