First NC lathe

[Hanswan]

Yeah so we have a 4020 Doosan VMC and are looking for a NC lathe to round out the shop. I have done some initial research and am considering a new Mori-seiki NL2000MC. Does anyone not think a wise decision? I have never run a NC lathe since i have been exclucivly mill up until now.

[JWB_Machining]

It Depends what size parts are you looking to do? If you specify materials you'll be turning, tolerance and size some guys on here will be able to give you a great answer and why.

[ulrarrun27]

Yeah so we have a 4020 Doosan VMC and are looking for a NC lathe to round out the shop. I have done some initial research and am considering a new Mori-seiki NL2000MC. Does anyone not think a wise decision? I have never run a NC lathe since i have been exclucivly mill up until now.

U Have selected a Trunmill Center LM guide way machine. Of'coz it is a excellent machine. U have many things to compare.. Doosan : Lynx220LM. is also falls in the same range of working. Since u Have Doosan it makes sense.

Arun

[Hanswan]

Thanks for the reply,

Essentially what I want is something that will do virtually anything. We do not have a product line at the moment so this machine will have to do whatever comes through the door and in my mind spending the extra 30k for a Mori machine that will hold the right accuracies for years and years is better than saving now and suffering later.
Of course if I had to guess I would hope we ran high tolerance Aluminum parts for the most part and ran one and half to two shifts a day.

[Hanswan]

I guess it should be mentioned the four machines we are considering are the HAAS SL-20, the Doosan Puma 240 MSB, the Mori NL2000MC, Mori DurTurn 2050MC and the Okuma L370BBM. Both Okuma and Mori are clearing inventory and are both around 30k lower than usual.
From a learning curve perspective I do already have a Doosan mill so maybe the Doosan lathe would be the obvious choice but if i had a once in a decade chance to get a Mori-Seike lathe in my shop I'm seriously considering it.

[g-codeguy]

What control is on the mill? Get the same make for the lathe. Lot less learning to do. Especially if you go for the Okuma lathe with one of their controls on it. However since you don't know lathes, it wouldn't be as bad as for someone who is use to the canned cycles and Macro programming of a Fanuc, and then goes to an Okuma control.

Can't help with your decision. We have Okuma, Daewoo and Mori lathes, but all are older models. My personal choice for the brands mentioned would be the Mori.

EDIT: Many of the canned cycles for a lathe will be different than those used on a mill. If you macro program for the mill, then it will be pretty much the same format for the lathe.

[Hanswan]

short hitory lesson on my machining experience.

I started me apprenticship in april 2006 and spent the first year fabricating machinery. I went to my first level apprenticship school and when i came back there was a brand new Doosan mill and MasterCam waiting for me. Since we are a small shop there is no one here with and CNC experience and it has been my job for the last two years to learn both NC machining and MasterCam at the same time. It's true i leaned on tech support quite a bit in the early days but im now proud to say after two years we are turning a helthy profit on our one Mill. Before my next big marketing push I want a lathe to round out the shop since it seems foolish to go through all the work to potentially get only half the work.
Also thanks for any input on this decision, I appreciate it.

[ulrarrun27]

I guess it should be mentioned the four machines we are considering are the HAAS SL-20, the Doosan Puma 240 MSB, the Mori NL2000MC, Mori DurTurn 2050MC and the Okuma L370BBM. Both Okuma and Mori are clearing inventory and are both around 30k lower than usual.
From a learning curve perspective I do already have a Doosan mill so maybe the Doosan lathe would be the obvious choice but if i had a once in a decade chance to get a Mori-Seike lathe in my shop I'm seriously considering it.

Yup!! Good Home work you have done already..
1.Puma240MB is the Box Guide way machine with High Tourque Spindle. I use to remove 12mm Diametrically on 110mm Rod.(Steel).
2.SL-20- Torque??
3. NL2000MC.. BEST in all you selected..
4.Dura Turn : 2050: Please drop it.. since it is manufactured for low cost cust. i can point out many disadvantages..
5.Okuma L370BBM. Repeatability is good. They normally use c1 class ball screws. My personal problem with this machine is the controller..

Arun

[ulrarrun27]

Thanks for the reply,

Essentially what I want is something that will do virtually anything. We do not have a product line at the moment so this machine will have to do whatever comes through the door and in my mind spending the extra 30k for a Mori machine that will hold the right accuracies for years and years is better than saving now and suffering later.
Of course if I had to guess I would hope we ran high tolerance Aluminum parts for the most part and ran one and half to two shifts a day.

Good. But i don think you can do every thing.. Because Y Axis is missing... So straight live tools can be used only @ Center of the C Axis.. U Got it!!!

[mavs84]

You need to not forget about Leadwell T-8 (linear ways) and LTC-25 (boxed ways) lathes. I used to work Mori Seiki directly and sold Doosan (Daewoos). I will put Leadwell up against Okuma, Mori Sieki and Daewoo on cutting performances. Leadwell uses Fanuc controls, servo and spindle motors.