Centroid Community CNC Support Forum

Hello experts,
I want to change mach3 with centroid acorn. Because mach3 does not support turn threading with encoder synchronized and rigid tapping.
I have a small lathe with 6 position unidirectional automatic tool changer powered with stepper motor connected to 4 axis and home switch,
the turret is similar to the emcoturn 120.
this is the macro in M6 start

'M6 macro. 6 position unidiretional rotary turret conected on axis A 360 degree rollover
tool = GetSelectedTool()
SetCurrentTool( tool )

Code"G0 G53 X40" 'Move to tool change location
While Ismoving()
Wend
Code"G0 G53 Z150"
While Ismoving()
Wend


If GetCurrentTool() = 1 Then ' Check for the Tool number
Code"G0 A10" ' Move to position axis A 10 degree
Code"G0 A-0.5" ' reversing to 0.5 degree for lock
While Ismoving() ' wait for the movement to stop
Wend
End If

If GetCurrentTool() = 2 Then
Code"G0 A70"
Code"G0 A-60.5"
While Ismoving()
Wend
End If

If GetCurrentTool() = 3 Then
Code"G0 A130"
Code"G0 A-120.5"
While Ismoving()
Wend
End If

If GetCurrentTool() = 4 Then
Code"G0 A190"
Code"G0 A-180.5"
While Ismoving()
Wend
End If

If GetCurrentTool() = 5 Then
Code"G0 A250"
Code"G0 A-240"
While Ismoving()
Wend
End If

If GetCurrentTool() = 6 Then
Code"G0 A310"
Code"G0 A-300.5"
While Ismoving()
Wend
End If

End

The turret can be operated in the same way using acorn card and Acorn Lathe "Pro" software?
Thanks in advanced.
Sorry for my english.

Take pictures of your machine, including control cabinet, axis motors and drives, spindle motor and drive as well as the turret and explain how the turret sequence of operations works, including whatever motors and sensors are used. Either post them here or to a Google Photo album and provide a link here.
We'll try and provide guidance.
Marty

Hello.
This morning I took some pictures of the lathe,also a video.
https://www.youtube.com/watch?v=3C5CmLOeQmY
the turret have a switch for homing, have a stepper motor, the stepper driver have 3200 micropulse, on the motor tuning have 321 pulses/degree,
a complete turn of the turret is 360 degrees. The spindle have a frequenze converter 0-10v input.

Nice turret. Commercially available?

Is the last picture your DB25 breakout board?

Your turret should be easily doable. The goal right now is to get the next version of CNC12 released and then we will be working on ATC among other things before the next release.

Would you be willing to help test with your particular Turret? Tool 1 sensor, axis driven open loop stepper, unidirectional, overshoots the tool position and then comes back against the pawl.
How many tool positions?

While it is similar to an Emcoturn 120, the 120 has 4 bit tool position feedback. In your case, a timer would have to be added to allow enough time to change the tool position before starting to move.

Marty

Commercially, I do not believe it exists anymore. it's a very old lathe.
Yes I have a smoothstepper ethernet with DB25 breakout board.
supports only single pulse index threads, in this case the acorn card seems to me much higher because it supports spindle encoder feedback
The turret have 6 positions with a single sensor for homing.

luchito1973 wrote: ↑Mon Feb 18, 2019 2:12 pm Commercially, I do not believe it exists anymore. it's a very old lathe.
Yes I have a smoothstepper ethernet with DB25 breakout board.
supports only single pulse index threads, in this case the acorn card seems to me much higher because it supports spindle encoder feedback
The turret have 6 positions with a single sensor for homing.

I don't believe a PLC has been created for a uni-directional Axis driven turret with a Tool 1 position sensor just yet. You have 2 options I think.
Call and ask Centroid to create it for you at their rate of $90hr, or wait until the next round of software testing and ask to be a tester for your particular turret. That way you get what you need and everyone else with a similar setup can use it as well.

You must note, any custom PLC's will not allow you to use the Wizard, as the Wizard creates a new PLC each time it is run. Centroid has it on their radar to work on this in future software releases.

Marty

Hello Marty,
I will wait for the next version of the software, normally I do the macros and the programs plc myself.
For the moment I will continue to use the old mach3.
thank you very much for your kind help.
Luis Vega.

Have you seen my thread? I take very similar logic and convert this to Acorn (from Mach 3).

viewtopic.php?f=60&t=1544

With mach3 it is very easy to do it. with acorn I do not know how to do it, no I found a manual of the macro.

luchito1973 wrote: ↑Wed Feb 20, 2019 12:23 pm With mach3 it is very easy to do it. with acorn I do not know how to do it, no I found a manual of the macro.

It is not as easy as a Macro.
Hoping for some ATC support in the 4.16 release (next after the upcoming 4.14 release)