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my1987toyota wrote:

Well with my project I got interested in other things and haven't spent much time on it in a while.
Partly the placer head desperately needs updating to modern day equipment. Cable and pulley
for the Z axis is in my opinion a terrible idea but the machine was designed in 1993. We have a few
other PnP machines where I work so this one was more or less an experiment. Plus work just
doesn't seem to ease up.
 

I tend to post and then forget about LinuxCNC for a few weeks lol, forgot to check on this. I just converted the machine I intended to be to a laser cutter.....since I needed one and figured I could actually get that going. I had a belted see-saw Z, which I just stripped to mount the laser to the carriage.  I did redesign it to be a rack and pinion see-saw so that way I could easily swap out the PnP nozzles for and the laser and have a compatible Z. I haven't machined it yet though

It'd be nice if there was a proven simplified PnP setup for LinuxCNC. I'd be alot more inclined to finish the mechanical stuff if I knew software wasn't going to be a long drawn out slug fest. Hopefully somebody beats me to it, if not maybe I'll get there one day lol.

I do find flexGUI to be a pretty easy (ish) way to get a purpose built UI going. I was able to convert the one I was making for my mill into a laser UI fairly simple. I'd definately use that to tackle the PnP thing if I were at it right now.

langdons wrote:

Whoa, hold up.

Households in Austrailia use 415VAC?!

(little kid): "Hey daddy, what's this? ...kzapp! [kid gets electrocuted]"


 

Haha, I wish.

Some have 415 3ph, but normally we just have 240v single in houses. Most single phase outlets here limited to 15amp, even in industrial settings (high amp ones do exist, but aren't as common as high amp 415 3ph). Hence, I'll need 400v 3ph drives as that's the high amp I have available in the shop.

tommylight wrote:

spincycle wrote:

I assume the procedure is similar for newer drives if running analog?
Yes.

spincycle wrote:

I would tune the velocity/torque in the drive software, then tune position through Linuxcnc.

Yes.

spincycle wrote:

It looks like a few of the modern servo drives I've looked at have encoder outputs. Those will just run back into a Mesa card like the 7I97?
Yes.
3 for 3, nice!
New drives can also be controlled by step/dir and also have encoder outputs, and those can again be used in LinuxCNC.
And there are several boards from Mesa that can be used, not just 7i97, a lot of combos there so when you are ready to order stuff, ask here first as we have the Mesa Master with us here, always, in the form of PCW.

Ace! Thanks Tommylight.

I have a 7i96 kicking around from a machine that never got off the ground, but I assume the lack of encoder inputs means I should use a different card.

This machine originally had rapids of 32,000mm/min with 16mm pitch ballscrews - 2000rpm on the axis. Would there be any benefit of analog over step/dir or even ethercat, to maintain such rates of speed and precision?

I just got off a 10hr flight. I took the original Bridgeport machine schematics with me to asses the control side of things. It looks like the Heidenhain output a 24v (sourcing?) signal to a bank of relays to control the solenoids, enables, mag motors, contractors etc. I assume a Mesa card, like the 7i84U could take this role?

It'd be bloody awesome if I could just retain these original distribution/control boards and halve the amount of wiring required!

Did you try, if the GUI updates changes in tooldata this way? Be aware it uses toolradius

G10 L1 P#5400 R


linuxcnc.org/docs/2.9/html/gcode/g-code.html#gcode:g10-l1


otherwise i have no idea

Yes,

programmer pinout is:

1  VPP
2  +3.3V
3  PGD
4  PGC
5  GND

Full (base and user part) R16 file is:

 

Sorry I could not get the remote update working with
the older base part. I will look into this when I have more time.
 

I've took additional measurements using the debug mode and terminal output. Attached is a video containing two following measurements.

In the first measurement, the feedrate value was constant throughout the probing. In the second measurement, the value was deliberately changed by feedrate potentiometer.



The terminal output shows that in the second measurement, the following lines were added:
[DEFAULT.QTVCP.QT_ACTION][DEBUG]  CALL_MDI Command: G91 (qt_action.py:182) 

The command M64 P4 at the beginning and M65 P4 at the end were added and are necessary for "turn on" and "turn off" of my probe.

Terminal output also in attachment:

Moved to "EtherCAT" section.

Farzad wrote:

Do we have input shaping in Linux CNC as Klipper in 3d printers ??

No, not yet, nor am i aware of anyone working on it.

Oh, interesting.
So do I understand right - it should work when I find a PIC programmer that can program it? I guess that should be doable.
Is there a pinout for the programmer pins?

best regards & thanks for your support,
Alex

I talked with my contact and he said its possible (he even did it before).

Edit: I attached a G-Code sample from him, that was generated by one of his posts.

I have a new basic setup and I have motion working, and am expanding and fine-tuning from there.

I have a few questions
1. What is the best mode to use? csp? `setp cia402.0.csp-mode 1`
2. Where is the best place to do 'scaling'?  In Linux-CNC (hal & cia402) or in the EtherCAT driver/controller?
3. Where can I fiind documention for `ethercat-conf.xml`, I am using one based on github.com/dbraun1981/hal-cia402/blob/ma...le/ethercat-conf.xml, and want to understand the option and what else should be in there?  I want do add SDOs.

Thanks!!!!


 

one more thing

Do we have input shaping in Linux CNC as Klipper in 3d printers ??

Thanks for your answer. Attached the result.Linuxcnc works with the changed value. But the GUI doesn't recognize the change.

I bought that same Hynade 80amp cutter in October '23 and have been running it ever since on my homemade linuxcnc/mesa table, no complaints at all.

I did some research on the torch and found the manuals from Tecmo are the source of the torch or are excellent copies.

www.tecmo.it/wp-content/uploads/2023/02/2022-09-A-PT.pdf

I purchase torch consumables under their part numbers from ebay seller PlasmaDyn www.ebay.com/str/plasmadynplasmaweldingparts

Looking forward to this build.

I see. I'm not very familiar with editing post processors so I have no idea what's possible. I've made a sketch to give you an idea of how Tilted Work Plane (TWP) would work in the example part.

 

What we need is the offset from the current WCS (G54) to the new origin of the TWP. After that we can use regular 3axis gcode to mill the feature on the inclined plane.
Note that the g68.3 command accepts an optional 'R' word to change the direction of the new X axis.