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Messages - clachan

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21
General Mach Discussion / Re: which Breakout Board
« on: June 26, 2006, 11:00:19 AM »
I'll order Gecko 201, hopefully it will sort it out, thanks for helping

22
General Mach Discussion / Re: which Breakout Board
« on: June 26, 2006, 08:18:14 AM »
This probably the most accurate fault description up to date:

All accesses don't work properly at low speed, all of them.
At high speed steppers working fine, the slower the speed the worth problem. All moves - jogging, G00, and all cutting moves go messy at low speed.

I disconnected steppers from shafts, so it can't be mechanical.

23
General Mach Discussion / Re: which Breakout Board
« on: June 26, 2006, 02:43:39 AM »
Hi Sid
Both X and Y have the same problems, but I'll check all connections.

24
General Mach Discussion / Re: which Breakout Board
« on: June 25, 2006, 10:03:28 AM »
 Brian, backlash is not checked as enabled.

25
General Mach Discussion / Re: which Breakout Board
« on: June 25, 2006, 09:22:28 AM »
Hi Pete
I don't think it is power supply, I tried to run G02 with one motor disconnected completely (for example disconnected X, while Y is still connected), it is the same story.

26
General Mach Discussion / Re: which Breakout Board
« on: June 25, 2006, 07:59:08 AM »
I think spikes are fine.

After changing some things in motor turning I narrow down to the fact that steppers are not working properly only in arc mode, say in G02, when stepper comes to the point it needs to go in reverse, this is when it goes wrong. I disconnected steppers from drives and it is clearly visible that when in G02 it comes to the point for the axes to change direction it gets jumpy.

In G01 it works fine.

27
General Mach Discussion / Re: which Breakout Board
« on: June 24, 2006, 04:50:04 PM »
I checked shafts and motors coupling, they are as far as I understand not plastic gears break, they look like rubber ribbons.

All accesses (can't check Z, but X and Y definitely) suffer from the same problem - when I run every axes separately under a clock (for example I run 100 times G00 X-20  X20 ) everything if fine, steppers sound good, and clock shows no steps lost, however when I run cutting moves G01 X-20 X20 things are going wrong, motors sound very doggy when axes changes direction and steps are lost, it works better when Feed rates are higher getting worse at lower feed rates.


28
General Mach Discussion / Re: which Breakout Board
« on: June 24, 2006, 06:44:08 AM »
Hi Brian
It was already in sherline mode.
 it cuts rectangular pockets just fine (from wizard), but lose on X when I try to cut Circular Pocket (from wizard), say if I cut 12mm deep circut  in 4mm step depth, then on the right side of the pocket I'll see two steps, mill will lose on X a bit every time it climes down in step depth.
Steppers are also sound unhealthy when mill going in arch cutting.
Also when I jog up in Z, sometimes when UP courser is pressed, the mill will go down, but DRO will read if it is going UP, and this movement down will be at the speed much higher then set up jogging speed.



29
General Mach Discussion / which Breakout Board
« on: June 23, 2006, 06:28:05 PM »
I converted Dyna 2800 and run it from Mach3, i didn't use Geko drives just reconnected Dyna original drivers. In general it obeys, but sometimes throw out flukes (missing steps, not good arc cutting, loosing direction in manual jogging, etc.). After reading posts on this forum it looks like I need breakout board to start with.
Can you please recommend which model to go for.
Thank you

30
General Mach Discussion / Re: retrofiting dyna 2800
« on: May 16, 2006, 04:21:51 PM »
Now most of the wireing done and machine works well with Mach3.
It moves and cuts smoothly in linear mode, cut rectanguler pocket using wizards librery

However when it start cutting arcs and circles the axeses straggling, motors make not healthy noise, what can it change to get it right?

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