Messages

1

General Mach Discussion / Re: lost steps/ motor stall with tripple beast

« on: January 23, 2020, 02:44:50 AM »

thats the next thing ill try...
Didnt have time to try the last days.

2

General Mach Discussion / Re: lost steps/ motor stall with tripple beast

« on: January 23, 2020, 02:16:58 AM »

i switched the x and y axis to see if the problem stays at x Axis or not. when driving the x axis with y Axis controll the problem still stays at the X Axis. so its not the Controller. Also found out that the controller was set to 3,2A for X Axis (4,2A Stepper) but it didnt change a thing (y axis was at 4,2A) it is very strange that it doesnt show a difference  if 3,2 or 4,2 A is set. 4,2 should give it a whole lot more torque and therefore minimixing stall/lost steps.

eighter the x Stepper Motor is somehow damaged or Mach 3 put out wrong or strange signals...

Any Idea would be greatly appreciated

3

General Mach Discussion / Re: lost steps/ motor stall with tripple beast

« on: January 21, 2020, 02:03:12 AM »

Good Morning,

tried disconnecting the 4th axis yesterday and did some milling. Still lost steps. Have no Idea why.
It worked without the 4th axis before, but now it sometimes does strange things. got lost steps and after that it worked fine for some more passes and lost steps/stalled again. even with very low feed of 300-400...

ill change the power supply as soon as it arrives (12,5A@48V) and hope it gets better.
 if not ill maybe change the stepper from y to x and see if the problem follows.

Any more ideas? may there be some mach settings off?


Thanks

4

General Mach Discussion / Re: lost steps/ motor stall with tripple beast

« on: January 20, 2020, 02:30:46 AM »

Thanks, i havent tried this yet but i will as sonn as i get off work today.
Strange thing is that with the USB handwheel everything works great even with 4th axis enabled.
only the g code is giving me bugs...

is it possible that when running G code the other axles are somehow locked and drawing more current than when running usb wheel jog only?

looking forward on trying this!

Ill let you know.

Thanks

EDIT: just checked the power supply. Its only 350 Watss 6.7 Amps @ 48V, really might be the Problem!
I had troubles running the steppers with faster aceleration. noticing that i run 3 Nema 23 with 4,2A each. might be the reason.
i guess they draw a bit more when accelerating. with only 6,7A supply that might get a bit problematic.
and off to amazon for a 48V 15A supply....

5

General Mach Discussion / Re: Schrittverluste mit Mach3 und Tripple Beast

« on: January 20, 2020, 01:29:19 AM »

sorry. i was still  a bit tired and wrote everything in german... new post in englishc is up...

6

General Mach Discussion / lost steps/ motor stall with tripple beast

« on: January 20, 2020, 01:22:03 AM »

Good morning,

this weekend i had some serious troubles with my CNC Mill (it is Paulimot F207 with stppers attached)


 When i was moving my axles with my usb handwheel everything was fine, even up to  1000mm/min.

As sonn as i eneterd G code to the MDI page to move my X Axis the motor stalled.  Squeeling sound and no movement on the axis.
Never had this happen before.
I tried to lower the max speed and acceleration of the x axis. y funktions still like it is supposed to.
Even when i entered G1x20 f400 with motor tuning accerleration turned down to 100!!  i got this problem.

It seemed to be an issue when i change direction of x movement. so befor i got from 0 to 20mm after that back to zero direction changed and motor stalled.

I also tried to cut backlash speed down to 30% of max. Still the same. The speed and acceleration values seem to be very low so this should not be a problem.


Interesting part is that with the CNC handwheel everything moves as it should be.
Could there ba any setting in MAch that causes this Problem?


I run MAch 3 on a clean Win XP with a Ethernet smooth stepper and tripple beast controller.


Only thing i changed is i added a 4th axis. also noticed some stalling of the 4th axis which ran perfectly before.

I have no idea whats going on.

thanks in advance
best regards
archer

7

General Mach Discussion / Schrittverluste mit Mach3 und Tripple Beast

« on: January 20, 2020, 12:52:07 AM »

Guten Morgen zusammen,


Ich hatte am Wochenende paar Probleme mit meiner Fräse.
Wenn ich mit dem Handrad verfahre laufen alle Achsen ohne Probleme.

Wenn ich allerdings die X Achse dann im MDI per G Code verfahre (G1 X20 F400 z.b) habe ich Schrittverluste (Also der Stepper heult auf und es bewegt sich gar nichts mehr). Es schein nur dann ein Problem zu sein wenn ich die Richtung der Achse umdrehe von zuvor in +x verfahren auf -x. Es ist egal mit welchen Vorschub. Selbst mit nur 400mm/min passiert das. Ich dachte schon die beschleunigungs Rampen sind zu steil aber die habe ich schon auf 50 mm/s2 heruntergedreht und es ändert nichts dran.
Wenn ich am USB Handrad verfahre gibt es keinerlei Probleme mit Schrittverlusten. Die Achse verfährt ohne zu murren, bis rauf auf 1000mm/min, selbst bei Richtungsänderung...

Ebenfalls habe ich schon die Backlash Geschwindigkeit auf 30% von Max (1000mm/min) runtergedreht.  Gleiches Problem.

Die Fräse lief zuvor eigentlich Problemlos.
Das einzige was ich geändert hab ist, dass ich eine 4 Achse drangehängt habe.

Hat jemand eine Idee woran das liegen könnte?


Noch paar Infos zum System. Fräse ist eine umgebaute Paulimot F207V mit Nema 23 Stepper. ESS und Tripple Beast Steuerung. Mach läuft auf einen ziemlich nackten win XP Rechner.


Danke schonmal

Beste Grüße
archer

8

G-Code, CAD, and CAM discussions / Re: Cirkles in Mach 3 Problem

« on: November 20, 2017, 06:34:38 AM »

tried that already.. same result.
looks like i have to disassamble and work on the nuts to eliminate/reduce backlash...


Thanks alot!
Dan

9

G-Code, CAD, and CAM discussions / Re: Cirkles in Mach 3 Problem

« on: November 20, 2017, 04:40:33 AM »

im pretty sure it is not flex in that case. this material is very good /easy to maschine.

But i have quite a bit of backlash in the spindels (trapezoidal spindels) no ballscrews. as i also want to be able to mill manually ill keep the spindles.
I'll try to minimize the backlash by workung on the nuts tough...

thanks!

10

G-Code, CAD, and CAM discussions / Re: Cirkles in Mach 3 Problem

« on: November 20, 2017, 04:03:44 AM »

ok now i maschined a part to try out the code and it worked.
But the part turned out to be not very round at all.


heres a video of the milling of a test piece.
https://youtu.be/wrK5LY8areU

Question is why.
I have backlash compensation on and measured it with a dail gauge. the backlash is compensated very well...
also tried to run slower because the motors might have trouble slowing down, speeding up. but didnt change.
Any idea? Is there a setting n Mach3 to eliminate this?
sorry for my dumb questions. total new here. try to learn...


Thanks in advance
Dan