Thread: NordicCNC's build log
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Also mounting the electrical enclosure directly to the frame (made of aluminium) would it be a problem since it would basically be in direct contact with the machine frame? I mean that would be a direct earth connection for the enclosure. I am not too into electronics (yet)!..Clive
The more you know, The better you know, How little you know
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22-05-2020 #162
I would at least fit a mains filter because of them being Servo's, however, I have seen that some people have had issues with DMM servo's because they didn't use line reactors so you might want to fit them to be safe, or just go with mains filter and if you get any issues you can always slip a line reactor in between.!
It mostly depends on your incoming supply quality I think and I seem to remember those who have had issues where US based which works on different Freq and voltage to EU.
Regards the frame then yes it's fine and you would want the earth to the frame anyway for safety just in case a wire shorted to the frame.-use common sense, if you lack it, there is no software to help that.
Email: [email protected]
Web site: www.jazzcnc.co.uk
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23-05-2020 #163
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01-06-2020 #164
JAZZCNC, if you read this I have a question for you. How do you go about assembling the L-shape gantry together? I have received my aluminium profiles and to my surprise I noticed that they are not flat in the middle. It is probably hard to see in the picture but it is about 0.5mm.
I was thinking that I could sand it down, since the only critical thing would be that it is flat on the sides so that it wont wiggle when assembled.
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01-06-2020 #165-use common sense, if you lack it, there is no software to help that.
Email: [email protected]
Web site: www.jazzcnc.co.uk
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01-06-2020 #166
Yes exactly. I got them from a local supplier, since I was not able to find any 160x80 heavy version profiles anywhere. Only the local supplier could offer them.
Ill probably face them in my crappy cnc router. It will be flat enough that way. I can probably get within 0.2mm over the 1200mm lenght. I wll then just shim the top raik.
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01-06-2020 #167
So I have installed 2 linear rail carriages just to test how they perform. Once again to my surprise, both of the tested carriages are running extremely bad. Same as in Joe's video. I am not sure if this is normal. I didn't apply any grease yet, I will try with grease applied tomorrow also. But I figure they should at least not bind/stagger every 10mm even without grease??
https://youtu.be/b_DDT43lBIc
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01-06-2020 #168
Well first have you got the bearing reference edge and rail reference edge-aligned.?
Also, they can feel stiff at first, esp when unloaded, just put some weight on them and feel how they slide. I think you'll find the slide easily with weight on them and greased up.-use common sense, if you lack it, there is no software to help that.
Email: [email protected]
Web site: www.jazzcnc.co.uk
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02-06-2020 #169
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02-06-2020 #170
No I very much doubt it. The plastic seals don't grip that much and not something that misalign because of how the bearings are put together.
Normally I don't get trouble with Hi-win bearings needing cleaning from new but if it feels like just one of the bearings is doing it then it may be worth taking apart and checking there's no debris in it.
They are very easy to take apart and rebuild, just do it inside a tray because the balls go every where.
Personally I think they will be ok and your feeling the normal Sticky clicky notchy feeling they can give when dry and new. Obviously very difficult to now without feeling them.-use common sense, if you lack it, there is no software to help that.
Email: [email protected]
Web site: www.jazzcnc.co.uk
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