LinuxCNC MillTurn

Start
Prev
1
Next
End

Sekai
Offline
New Member

18 Jun 2025 19:26 #330468 by Sekai

LinuxCNC MillTurn was created by Sekai

Hi everybody.
I would like to build a CNC machine with 5 axis MillTurning.
Its basically like the DMG Mori CTX BETA 800 TC.
I work everyday as a cnc programmer with DMG(Siemens/Celo) and Doosan(Fanuc).
It would be a small form factor and only for light materials, like aluminiu or brass.
My ideea is :
X, Y, Z as linear axis.
C1, C2, C3 as rotary axis.
C1 is the rotary axis of the spindle head
C2 is rotary axis of main spindle (G54)
C3 is the subspindle (G55 for ex.)
BTW i know that in DMG the C1, C2, C3 are in angular mode, in turn mode is S1, S2, S3.
The Spindle head will be with a BT30. (i will machine all turn base tool holders for BT30)
The driver part i would like to use 400W to 750 W servomotors.
I would like to use Parallel port for this setup but i get the feeling i'm limiting the performance of the build.
For the moment i have some stepper motors (JSS57P2N) would like to experiment.
The build size will be maximum of 500mm between arbors (S2, S3), the Y axis max 150 mm travel, X axis 200 mm travel.
The problem i face right now is it posibil to make this cnc with linxcnc or i have to buy a different controller and software?
For now i have DELL Optiplex 745 with Intel Core2Duo CPU and 4GB Ram, AMD video card and i get about 12000ns
latency test.
I'm trying different configurations but do not see something compatible for my purpose.
If someone build something similar from DMG style could you guide me.
Thanks

Please Log in or Create an account to join the conversation.

tommylight
Away
Moderator

18 Jun 2025 19:46 - 18 Jun 2025 19:48 #330470 by tommylight

Replied by tommylight on topic LinuxCNC MillTurn

Yes.
Yes.
Yes.
...
But first you have to stop thinking DMG or Dosan have good controllers, most industrial controllers suck badly for some work while being very good for some other work.
Point being, C1, C2, C3 are very wrong names for rotary joints/axis, LinuxCNC use A, B, C and they are tied physically to X, Y, Z, in that order so very easy to remember and use.
As for the rest, the above Yes's are for everything else you asked, LinuxCNC can do 5 Axis (can do 9 axis XYZABCUVW and each of those can have more than one joint/motor/drive controlled separately), yes you can use a parallel port or two or three if you need more inputs/outputs, parallel ports can be set to IN/OUT/X mode, etc etc etc .... the list is very, very long.
And most importantly, YES, start building the machine, no matter what i or others say, just build it!

Edit:
Just read it again, C are spindles in axis mode so forget the part of me complaining about it.

Last edit: 18 Jun 2025 19:48 by tommylight. Reason: more info

The following user(s) said Thank You: tivoi

Please Log in or Create an account to join the conversation.

Sekai
Offline
New Member

19 Jun 2025 03:07 #330485 by Sekai

Replied by Sekai on topic LinuxCNC MillTurn

Thx for the reply.
I know that linuxcnc has 9 axis in total and the name in different.
For now i have the linear guide rails and i'm working in Solidworks to build the 3d model of the entire build.
What i dont know is how to use linuxcnc for the spindle configuration.For example should i use a servomotor for the spindle head, main and subspindle or use a different style like a regular 3 phase motor with a VFD comanded by RS485 and then when i need position i can switch to servomotor or a stepper motor.
The advantage will be with 3 phase motor i can get higher rpm.

Please Log in or Create an account to join the conversation.