How do I setup a 5 axis mill?

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31 Oct 2019 13:29 #149284 by andypugh

Hello, the link above is dead - is there a Linux CNC version for 5 axis or not??


All versions of LinuxCNC can support up to 9 axes. The config that was linked to is now here, in the main LinuxCNC repository.
github.com/LinuxCNC/linuxcnc/tree/master...table-rotary-tilting

If you install LinuxCNC (version 2.8 onwards) then you can run that demo config without physical hardware. If you install the current released version (2.7) then there are some different 5-axis demos.

If not can we have clear step by step instructions to make Linux CNC control 5 axis (XYZAC) for rotary table that has two stepper motors in it.


Do you want to use tool-point-coordinates, or just control 5 conventional axes?

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31 Oct 2019 13:58 - 31 Oct 2019 13:59 #149285 by jackotool
Thanks for your help and reply ...

I guess tool point coordinates? ... as the tool will be doing the cutting of aluminium. I'm hoping LinuxCNC will decide for me what when and where to use which axis.

What do I do with the .ini files etc ... where do I put them --- I am relatively new to CNC .... although I was a CNC machine tool setter operator 30 years ago!
Last edit: 31 Oct 2019 13:59 by jackotool.

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31 Oct 2019 14:06 #149286 by jackotool
Where is LinuxCNC 2.8? - On the main page I see only version 2.7

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31 Oct 2019 15:46 #149291 by tommylight
linuxcnc.org/downloads/
Download the stretch version, install it to HDD, then go to :
buildbot.linuxcnc.org/
for info on how to upgrade to 2.8 or 2.9

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31 Oct 2019 15:50 #149292 by andypugh
I would suggest running 2.7 to start with. 2.7 can do TCP too.

How do you intend to generate G-code? That will rather determine which way the machine should be configured.

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03 Nov 2019 08:31 #149477 by jackotool
Thanks .. Another issue with Linux CNC - I use terminal ls /dev/parport* no such file or directory in linuxcnc - cannot see parallel port in LinuxCNC but can see it in Linux Mint for example - any simple solution to fix this?

Also this version of LinuxCNC prevents me from updating anything - it won't even allow me to select another server ...

Any help please ... This is very frustrating and very buggy ...

Thanks!

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05 Nov 2019 00:02 #149562 by andypugh

Also this version of LinuxCNC prevents me from updating anything !


Which version are you using? (ie, which .iso did you download?)

www.linuxcnc.org/downloads/

If you are not using the 2.7 Debian 9 Stretch version them please try that.

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05 Nov 2019 07:25 - 05 Nov 2019 07:30 #149578 by jackotool
Hi, Thanks for the reply ... It is my error - I had three cards that had parallel port connecter - one of them works, the other two do not - I did not test the card that really connects again is all OS versions. If anyone require more details about what does/doesn't work in my case ... let me know ..

Meanwhile, how many parallel ports are required for 5 axis - is one sufficient?

Also, has anyone tried connecting a PCIe parallel port card to a PCIe/PCI adapter - would there be any serious latency issues?

By the way I am using LinuxCNC Debian STRETCH - the Wheezy version has some issues like it would not connect to server and would not allow me to choose a server near me etc - also my network card was not recognized, but my USB to network cable adapter was. In LinuxCNC STRETCH I have not had any issues at all so far!

Thanks!
Last edit: 05 Nov 2019 07:30 by jackotool. Reason: Additional information

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05 Nov 2019 10:22 #149588 by tommylight

Meanwhile, how many parallel ports are required for 5 axis - is one sufficient?

1 if you do not need anything else. It has 12 output pins, 2 for each drive as step/dir, one for enable to all drives and you have one spare for something else. Also it has 5 inputs for 5 limit/home switches.
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05 Nov 2019 11:24 #149593 by andypugh

Meanwhile, how many parallel ports are required for 5 axis - is one sufficient?


You can just about get by with one, though spindle control might be tricky.
But if you are building a 5-axis machine I suspect that using a parallel port _at_all_ would be a false economy.


Also, has anyone tried connecting a PCIe parallel port card to a PCIe/PCI adapter - would there be any serious latency issues?

If it works then there will be no significant hardware delay.
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