Newbie OmioCNC report - Page 4


Page 4 of 173 FirstFirst 12345671454104 ... LastLast
Results 37 to 48 of 2068

Thread: OmioCNC report

  1. #37
    Member dharmic's Avatar
    Join Date
    May 2015
    Location
    Australia
    Posts
    1317
    Downloads
    0
    Uploads
    0

    Default Re: OmioCNC report

    Rats.

    Decided to give it a good flog today and, on the most part, I was pretty happy. I need to sort out appropriate loads etc and learn the machine, today I ran out of speed-up override room on the feed and spindle after I manually overrode the CAM f&s settings because I was paranoid.

    So a 2hr job ended up taking 5.

    And 4.5h it all just stopped. What? Fire up spindle again, no worries, as soon as I started trying to feed it shut down again: the USB connection had dropped out.

    Hmmm. Switched everything off and on again, no help. Switched everything off, half an hour to cool down, re-routed USB lead in case of EMI and tried again. Nup, not playing.

    Going to call it a day today but will try again tomorrow, possibly with a different USB lead in case. Then it'll be time to see what their support/service is really like on Monday...



  2. #38
    Registered
    Join Date
    Jul 2015
    Posts
    17
    Downloads
    0
    Uploads
    0

    Default Re: OmioCNC report

    Well this doesn't sound good. I wonder if it found a limit that needs reset maybe?? Just guessing at it. I'm lost on the "speed-up override room" comment, what do you mean there?

    I have still not ordered yet. Just taking my time more than anything and still looking around but no matter where I look I end up back at OMIO like a damn magnet. I checked out Shop Sabre and even talked to the son of the founder. Wow he's really proud of what they make and claim all these others are a toy. They offer a dedicated pc style controller and some software I'm not interested in all for about $6400. Afraid that's over double this boys budget.

    Hope your gremlin there turns out to be minimal and that service or support will help get you going asap.



  3. #39
    Member dharmic's Avatar
    Join Date
    May 2015
    Location
    Australia
    Posts
    1317
    Downloads
    0
    Uploads
    0

    Default Re: OmioCNC report

    Omio came back pretty quickly and seems like the prime suspect is the grounding.

    The USB board ground floats off the case (ie it's all insulated) except for the PSU ground. So they've suggested I open the control box and make sure the insulation around the PCB mounts and the USB connector is all intact.

    I figured this would be a good time to replace the cables with shielded too, and pin the shield to the case of the spindle motor. I've noticed that my digital vernier goes mental whenever I put it near the spindle end when things are up and running.

    Hopefully it'll be a reasonably easy fix.



  4. #40
    Member dharmic's Avatar
    Join Date
    May 2015
    Location
    Australia
    Posts
    1317
    Downloads
    0
    Uploads
    0

    Default Re: OmioCNC report

    Lol

    Just went to measure it up for new cable and realised I'd need new pins for the servo plugs. Went to grab the easiest to reach plug to take a photo, it was the 4th axis lead which had slipped under the machine, covered in aluminium chips.

    That shorting out could have caused all kinds of entertainment, so before I get too excited about anything else I'll put it up, cover it and try again to see if problem repeats.



  5. #41
    Registered
    Join Date
    Jul 2015
    Posts
    17
    Downloads
    0
    Uploads
    0

    Default Re: OmioCNC report

    Oh!! Hope that's it and you don't have to make new cabling or other. Seems if they are familiar with grounding etc they would be addressing it rather than repeat it to the next guy and the next and so on. Any such luck that this was the problem and you are getting some feedback through that cable?



  6. #42
    Member dharmic's Avatar
    Join Date
    May 2015
    Location
    Australia
    Posts
    1317
    Downloads
    0
    Uploads
    0

    Default Re: OmioCNC report

    Only if it was shorting a driver out randomly and that was pulling down the card's voltage supply too. A very long shot, but investigating that is the most valid form of procrastination I can think of at the moment



  7. #43
    Registered
    Join Date
    Mar 2013
    Location
    UK
    Posts
    319
    Downloads
    0
    Uploads
    0

    Default Re: OmioCNC report

    Any news on your troubleshooting?

    I'm a happy X6-1500GT user and I'm hovering over the "buy" option on the 2200L - I ran into some rigidity issues on the 1500GT when cutting aluminium regularly which I think the 2200L will solve. The former works ok, but I'd like to be able to get a better surface finish and more aggressive cuts.

    I'm tempted to give the 4th axis a try this time round, but you've put me off lol. What do you think about just adding the driver on for $50 and then picking up something like this separately:

    CNC Router Rotational Axis,4th A Axis,4-Jaw Claw 100mm Chuck,NEMA 34 +Tailstock | eBay

    Looks much more substantial than the one offered with the 4 axis machine. Not quite sure on the specs whether it is an actual 0.6deg per step motor, or whether they are already including the 3:1 drive ratio and then calling a 1.8deg stepper a 0.6deg.

    One more question - on the X6-1500GT (or at least on the version they were shipping a couple of years ago) there was a mismatch between RPM commanded in mach3 and Hz reported on the VFD due to a mismatch in the voltage to pwm range. Did they remedy this? Eg if you set 12,000rpm in mach3, does the display ramp up to 200hz?

    Cheers



  8. #44
    Member dharmic's Avatar
    Join Date
    May 2015
    Location
    Australia
    Posts
    1317
    Downloads
    0
    Uploads
    0

    Default Re: OmioCNC report

    Not yet, zeeflyboy - I've only had a chance to do a couple of short runs so far and this issue only presented itself the first time after about 4h runtime.

    It sounds like the solution is pretty easy now that someone else has done the hard exploratory work, figure an extra thirty quid in your calcs for a spindle cable replacement and a couple of chokes.

    I think another 4th is the right way to go. If I had my time again I'd buy their 4th stepper driver and get something a bit meatier for the 4th axis, possibly something with a low backlash worm drive. But the one you've got shown there looks a hell of a lot better. Just make sure their driver can handle the bigger motor is all.

    I haven't paid much attention to the VFD spindle, I'll be honest. But I'll be checking it next time I fire it up, now that you've mentioned it!



  9. #45
    Gold Member
    Join Date
    Dec 2007
    Location
    Australia
    Posts
    2118
    Downloads
    1
    Uploads
    0

    Default Re: OmioCNC report

    Quote Originally Posted by zeeflyboy View Post
    Any news on your troubleshooting?

    I'm a happy X6-1500GT user and I'm hovering over the "buy" option on the 2200L - I ran into some rigidity issues on the 1500GT when cutting aluminium regularly which I think the 2200L will solve. The former works ok, but I'd like to be able to get a better surface finish and more aggressive cuts.

    I'm tempted to give the 4th axis a try this time round, but you've put me off lol. What do you think about just adding the driver on for $50 and then picking up something like this separately:

    CNC Router Rotational Axis,4th A Axis,4-Jaw Claw 100mm Chuck,NEMA 34 +Tailstock | eBay

    Looks much more substantial than the one offered with the 4 axis machine. Not quite sure on the specs whether it is an actual 0.6deg per step motor, or whether they are already including the 3:1 drive ratio and then calling a 1.8deg stepper a 0.6deg.

    Cheers
    You might want to find the part number of that stepper before buying it as a lot of these NEMA23/34 steppers are horrendously high inductance, which directly translates to equivalently high power supplies which can't be supplied reasonably for cost or design practical limit issues. This usually means the stepper is underpowered and weak as p**s in practice on rotary work.

    cheers, Ian

    It's a state of mind!


  10. #46
    Member dharmic's Avatar
    Join Date
    May 2015
    Location
    Australia
    Posts
    1317
    Downloads
    0
    Uploads
    0

    Default Re: OmioCNC report

    Colour me surprised, but today I had to cut a 30mm hole out of a bit of 1/4" mild steel plate and didn't have a bit to suit. So I created a toolpath, took a deep breath, crossed my fingers and hit the go button.

    At 3500rpm with a two flute 3mm HSS cutter, feed rate set at 150mm/min and boosted to 200 on the override, 0.75mm depth per pass, it wasn't going to win any races. But I do so hate the sound of snapping tools. Air blast and the occasional spray of Trefolex to help it along.

    Cut through it no problems at all, nice clean finish. End mill looks fine at the end and it showed no signs of Skippy Skip McStepperson of Skippton behaviour so all's good.

    I should probably invest in some high surface speed cutters (TiAN or even just carbide) and crank things up a bit, see how they go. But I'm pretty happy with this result - I seriously expected it to just bog in and die.



  11. #47
    Registered
    Join Date
    Mar 2013
    Location
    UK
    Posts
    319
    Downloads
    0
    Uploads
    0

    Default Re: OmioCNC report

    wow that's pretty impressive!


    aarggh - Thanks for that. I emailed the seller and got this spec sheet:

    OmioCNC report-_12-jpg


    So it looks like an inductance of 3.5... I must admit I have no idea whether that is good or not lol - it's higher than a typical nema23 but I don't know if it's typical for a nema34.



  12. #48
    Gold Member
    Join Date
    Dec 2007
    Location
    Australia
    Posts
    2118
    Downloads
    1
    Uploads
    0

    Default Re: OmioCNC report

    Quote Originally Posted by zeeflyboy View Post
    wow that's pretty impressive!


    aarggh - Thanks for that. I emailed the seller and got this spec sheet:

    OmioCNC report-_12-jpg


    So it looks like an inductance of 3.5... I must admit I have no idea whether that is good or not lol - it's higher than a typical nema23 but I don't know if it's typical for a nema34.
    3.5mH isn't that bad at all really, lower would be better as the lower the inductance the closer the power supply matches the requirements, it would be more of a concern if it was 8mH or more like a lot of the cheap Chinese packages are.

    cheers, Ian

    It's a state of mind!


Page 4 of 173 FirstFirst 12345671454104 ... LastLast

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


About CNCzone.com

    We are the largest and most active discussion forum for manufacturing industry. The site is 100% free to join and use, so join today!

Follow us on


Our Brands

OmioCNC report

OmioCNC report