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Post by cabecho88 on Mar 6, 2017 2:33:25 GMT
hi.
im new here.
i just got the cnc, and im new to cnc, i have always work with 3d printers..
i finish putting together the cnc yesterday and try it, it moves and i did a dry run with out a spindle in it.
after a few try and seen how it runs by it self i put the spindle in it and try it again, however the minute i turn the spindle on the cnc stops running. it freezes, as long as i keep the rpm low it works but the minute i give it more rpm it stops running. first i though it was vibration so it took the bored out and put it apart to see if it will go away, however it thous the same thing.
do any of you have any idea what it can be? any help will be really appreciated.
cabecho.
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Post by mrbigj on Mar 6, 2017 4:11:42 GMT
hi. im new here. i just got the cnc, and im new to cnc, i have always work with 3d printers.. i finish putting together the cnc yesterday and try it, it moves and i did a dry run with out a spindle in it. after a few try and seen how it runs by it self i put the spindle in it and try it again, however the minute i turn the spindle on the cnc stops running. it freezes, as long as i keep the rpm low it works but the minute i give it more rpm it stops running. first i though it was vibration so it took the bored out and put it apart to see if it will go away, however it thous the same thing. do any of you have any idea what it can be? any help will be really appreciated. cabecho. Possible power or controller issue? Sounds like something might not be connected correctly, or you've got something shorting out somewhere? Pictures of everything would help us help you  Jason |
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Post by Derek the Admin on Mar 6, 2017 4:48:47 GMT
This sounds like an electrical noise issue. Are you running this with the speed control know or did you set this up for PWM control?
The first thing I would try is to plug the spindle power supply into a different outlet. That would probably take care of the issue.
Also, I'm wondering if you are running the firmware as it was shipped or if you might have enabled hard limits in the firmware settings?
We will get ya up.
Derek
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Post by cabecho88 on Mar 6, 2017 19:35:44 GMT
hi guys,
Thank you so much for the fast response.
jason i will get pictures as soon as i can, unfortunately i have no idea how to get the pictures out of my phone.
Derek, im running the firmware that it was ship with, the spindle is running by the knob, i plug both of them to run in complete different circuit breaker from the house and they are still doing the same thing.
so again the strange part is that with the spindle in low rpm it runs fine.
now today i did a little more research by unplugging the z-stepper motor and turning everything on with out the z axis plug to the board and everything seems to work with the spindle at full 18000 rpm. (except the z axes of-course sine is unplug.)
now i need to fine out if the vibration is whats causing the stepper motor to short out or what is it.
Again guys thank you so much for your help.
any more help from here will be really appreciated.
Thank you!!!
cabecho
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Post by mp4doggie on Mar 6, 2017 20:06:57 GMT
not sure what phone you have but I upload my pics to my google drive (cause its free) then I download it to my computer . There are tons of free photo upload sites that let you link them in a forum
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Post by mrbigj on Mar 6, 2017 20:21:49 GMT
hi guys, Thank you so much for the fast response. jason i will get pictures as soon as i can, unfortunately i have no idea how to get the pictures out of my phone. Derek, im running the firmware that it was ship with, the spindle is running by the knob, i plug both of them to run in complete different circuit breaker from the house and they are still doing the same thing. so again the strange part is that with the spindle in low rpm it runs fine. now today i did a little more research by unplugging the z-stepper motor and turning everything on with out the z axis plug to the board and everything seems to work with the spindle at full 18000 rpm. (except the z axes of-course sine is unplug.) now i need to fine out if the vibration is whats causing the stepper motor to short out or what is it. Again guys thank you so much for your help. any more help from here will be really appreciated. Thank you!!! cabecho I use flickr.com, it is also free, and it's easy to share photos/videos from there... Jason |
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Post by Derek the Admin on Mar 7, 2017 4:15:53 GMT
Hey cabecho88.
I wanted to get back with you on this and make sure you end up taken care of. I applaud you for the diagnostic work that you've done. I am finding the stepper motor being unplugged and the problem not occurring to be a bit odd. I actually suspect that it's more that wires got moved a certain way that the EMI (electrico-magnetic interference) produced by the spindle or spindle power supply was reduced. I have a shop vac that can do the same thing. If I turn it on when it's in a certain spot it will trip things on the board. EMI issues can be a bit of a booger to chase down, but there are a couple things we can do to reduce the effects. I understand that your spindle power supply is plugged into a different circuit. That's a good step. How close is the spindle power supply to the uno board? Can you move it to the other side?
Have you tried this with a different computer or a different USB cable?
We're here to stand behind you on getting this right, but I think it's an EMI issue that can be solved by shuffling some things.
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Post by cabecho88 on Mar 8, 2017 2:44:57 GMT
ones again guys thank you for all your help. im still trying to figure out how to put picture here. no is telling me that they are to big. lol
so i actually have the spindle power supply in the opposite end of the cnc board, i just try after reading your post two different cables even change the spindle speed controller that they sand you on extra one. also trying to see if it was EMI i took the spindle out of the mount and i turn it on at full power and i put the cnc to run and what i did is hold the spindle next to all the stepper motors well the cnc keep running and nothing happen everything seem to work perfect, i even put the spindle casing touching the motor and everything work fine, now the minute i put the motor in the clamp and tight the clamp up everything shots down. so i think im going to try to 3d print a spindle mount or fine a way to isolate the spindle from the mount. and hope that it will fix it.
i will keep you guys posted see what happens i really cant think of anything else.
thank you guys for your help i really appreciated. and hopefully will get it running soon.
Thnk you!!!
cabecho
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Post by cabecho88 on Mar 8, 2017 2:55:40 GMT
lets see if i got the pictures in it |
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Post by Derek the Admin on Mar 8, 2017 4:50:04 GMT
That doesn't look like it's our spindle or spindle power supply. I'm still willing to help you, but I just want to clarify if we are dealing with one of ours or not.
Given what you describe I wonder if there is a problem where when it is clamps there is a essentially spark gap being created at a bad solder joint that is creating a bunch of electrically noisy arcs. The polycarbonate wheels and MDF frame should create electrical isolation between the gantry and the uno board... so I think it has to be RF. I'd be interested to see what happens if you take the mount off the Z plate and clamp the spindle into it when it's laying on the bed or next to the machine. If it still does it, then I think my hypothesis might be a little closer to confirmed.
Let me know how that goes.
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Post by cabecho88 on Mar 8, 2017 9:40:14 GMT
You are correct sir. That is not one of your guys spindle. I had it from a previous project that I never finish.
And if I take the spindle off the z plate and laying in the machine or even have it close to any thing else. The machine works fine.
Now thinking about what you are saying it makes sense why is the z stepper motor the one creating the problem. The z stepped is bolted to the same plate as the spindle there is no real isolation between the motor and the spindle.
I think I'm going to try using a plastic 3D printed spindle mount. And see what happens. If not I will end up getting a new spindle.
Ones again thank you so much for your help.
Cabecho.
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