Custom CoreXY - -Linear Rail Vibration October 10, 2016 10:41AM |
Registered: 8 years ago Posts: 112 |
Re: Custom CoreXY - -Linear Rail Vibration October 10, 2016 12:53PM |
Registered: 10 years ago Posts: 14,684 |
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makerparts
I cant set travel speeds higher then 100mm/s it seems to bind or run into a cpu limit or something else.
i thought it might be a missed step issue but i have carefully adjusted voltage on the Nema 17 400rev steppers to around 0.8Amps, and it warm but not too warm.
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makerparts
getting some weird vibrations/resonating in the rails as well.
thinking of getting some teflon Silicone Dry Lube not sure it will help.
rails are MGN12 Chinese knockoffs.. they move pretty smooth.
Re: Custom CoreXY - -Linear Rail Vibration October 10, 2016 03:16PM |
Registered: 8 years ago Posts: 112 |
Re: Custom CoreXY - -Linear Rail Vibration October 10, 2016 04:26PM |
Registered: 10 years ago Posts: 14,684 |
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makerparts
im running 1/8 Microstepping, to help speed things up.
I have avoided the Duet as im waiting for Marlin to natively support a 32bit board.
Re: Custom CoreXY - -Linear Rail Vibration October 10, 2016 09:24PM |
Registered: 9 years ago Posts: 916 |
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 04:34AM |
Registered: 10 years ago Posts: 14,684 |
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nebbian
400 rev/step steppers should work fine, especially at 1/8 stepping. I'm using 400rev/step motors at 1/32 stepping on a RAMPS/Arduino board, and it works fine at higher speeds.
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Marlin/Repetier on ATmega 16 MHz in Quadstep-Mode (uneven step distribution): <40 kHz.
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nebbian
I must say, the constant spruiking of a certain member's "financial interests" is getting a bit tiresome.
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 10:21AM |
Registered: 9 years ago Posts: 3,525 |
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 10:44AM |
Registered: 9 years ago Posts: 916 |
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 11:22AM |
Registered: 8 years ago Posts: 112 |
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 11:24AM |
Registered: 9 years ago Posts: 3,525 |
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 11:38AM |
Registered: 11 years ago Posts: 580 |
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makerparts
I cant set travel speeds higher then 100mm/s it seems to bind or run into a cpu limit or something else.
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 11:38AM |
Registered: 8 years ago Posts: 112 |
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 11:43AM |
Registered: 8 years ago Posts: 112 |
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 11:46AM |
Registered: 11 years ago Posts: 580 |
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makerparts
any other thoughts on other ways to reduce rail resonance /vibration?
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 12:11PM |
Registered: 8 years ago Posts: 112 |
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 12:16PM |
Registered: 9 years ago Posts: 3,525 |
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 12:25PM |
Registered: 10 years ago Posts: 14,684 |
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makerparts
not sure how to measure the time it takes accurately to determine actual speed that its running at.
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I did place an order for a Duet Wifi With panelDue to help resolve this issue.
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 12:40PM |
Registered: 8 years ago Posts: 112 |
Re: Custom CoreXY - -Linear Rail Vibration October 11, 2016 05:12PM |
Registered: 10 years ago Posts: 14,684 |
Re: Custom CoreXY - -Linear Rail Vibration October 13, 2016 10:25PM |
Registered: 11 years ago Posts: 118 |
Re: Custom CoreXY - -Linear Rail Vibration October 13, 2016 11:19PM |
Registered: 12 years ago Posts: 5,789 |
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Paul Wanamaker
The vibration is from the motors. Unless your rails/bearings are also loose and resonating. I think the good DR (the_digital_dentist) had some cars with undersized bearings, he replaced the bearings.
Just try the Duet with higher microstepping.
If necessary you can get external DSP based drivers, but those are usually only needed for larger (NEMA 23) motors. Too soon to tell.
Re: Custom CoreXY - -Linear Rail Vibration October 14, 2016 02:53AM |
Registered: 11 years ago Posts: 580 |
Re: Custom CoreXY - -Linear Rail Vibration October 14, 2016 08:34PM |
Registered: 12 years ago Posts: 5,789 |
Re: Custom CoreXY - -Linear Rail Vibration October 15, 2016 06:27PM |
Registered: 11 years ago Posts: 580 |
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the_digital_dentist
However, it still makes more noise than my wife would find acceptable, so the printer will be at the makerspace for the foreseeable future.
Re: Custom CoreXY - -Linear Rail Vibration October 15, 2016 06:39PM |
Registered: 8 years ago Posts: 112 |
Re: Custom CoreXY - -Linear Rail Vibration October 16, 2016 04:33AM |
Registered: 11 years ago Posts: 580 |
Re: Custom CoreXY - -Linear Rail Vibration October 16, 2016 07:47AM |
Registered: 12 years ago Posts: 5,789 |
Re: Custom CoreXY - -Linear Rail Vibration October 16, 2016 08:29AM |
Registered: 8 years ago Posts: 112 |
Re: Custom CoreXY - -Linear Rail Vibration October 16, 2016 11:09AM |
Registered: 11 years ago Posts: 580 |
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makerparts
So who makes an integrated Nema 17 Servo ideally 24v that can just plug into a standard 4 pin motor connector
Re: Custom CoreXY - -Linear Rail Vibration October 16, 2016 11:54AM |
Registered: 8 years ago Posts: 112 |