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Author Topic: Some starting advice for two steppers on one axis  (Read 10849 times)

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Offline ger21

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Re: Some starting advice for two steppers on one axis
« Reply #10 on: February 26, 2016, 06:31:11 PM »
Yes
Gerry

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Re: Some starting advice for two steppers on one axis
« Reply #11 on: February 26, 2016, 06:43:57 PM »
I see,,

http://cncdrive.com/UC300.html

This looks to be the best option.

Thanks and learning a lot about a good launching point for this project.  I might have some connectivity questions, but I'll do some research first.

TheDude,
Re: Some starting advice for two steppers on one axis
« Reply #12 on: February 26, 2016, 07:02:39 PM »
Oh,, wait,,, this board would be another option and would take the place of a gecko G540 or hobby CNC board...  Skimming the manual, it seems like a nice option, and gives me the number of axis I need.  Interesting.

BTW, for those who might be interested.
This project is to build a CNC controlled magnetic field mapping probe.  It will map the magnetic field of superconducting magnets used in the FRIB beam line upgrade at MSU in Lansing Mi.
http://www.frib.msu.edu

TheDude,

Offline ger21

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Re: Some starting advice for two steppers on one axis
« Reply #13 on: February 26, 2016, 07:21:22 PM »
No, the UC300 replaces the parallel port. You plug the G540  (or two) into the UC300.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html
Re: Some starting advice for two steppers on one axis
« Reply #14 on: February 26, 2016, 07:51:45 PM »
AAAHH,,, I see.  Well that sounds like a champ!  I'll do some more research.  I did find a review topic on here for the UC300, and folks have good things to say.
I will look into it further and I'm sure I'll have more questions.  Thanks so much!
TheDude,
Re: Some starting advice for two steppers on one axis
« Reply #15 on: February 26, 2016, 08:17:24 PM »
Hey Dude,

This board Davek0974 mentioned earlier in another thread will run dual axis drivers from the same output. X and Y.

http://www.machsupport.com/forum/index.php/topic,32020.msg222885.html#msg222885
« Last Edit: February 26, 2016, 08:21:18 PM by Overloaded »

Offline Tweakie.CNC

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Re: Some starting advice for two steppers on one axis
« Reply #16 on: February 27, 2016, 01:26:02 AM »
Although the CWD556 does indeed allow two motors to be driven from one output you must bear in mind that it does not allow for synchronising the two motor’s exact position as, for example, in gantry squaring.

Tweakie.
KEEP SAFE !
Re: Some starting advice for two steppers on one axis
« Reply #17 on: February 27, 2016, 07:35:07 AM »
Hi Tweakie,
  I'd guess any drivers would work, I was referring to the CPO-10V BoB. (maybe a typo ?)

As far as squaring, I'd seen it mentioned where after homing the (stepper) axis, one can usually turn one motor one click at a time by hand to true it up.

Or, square it up before power up and it is usually fine enough.

The OP Steve mentioned 2 separate X,Y tables in sync., so squaring might not be an issue.
Re: Some starting advice for two steppers on one axis
« Reply #18 on: February 27, 2016, 07:40:08 AM »
Just thought up another squaring option that might work well.
If one was to put a simple SPST toggle switch on the PULSE line to one of the paired drives, isolate the signal to that drive while squaring with the other, then close the switch for normal operation.
A viable work around ?

Just thinkin",
Russ

Offline Tweakie.CNC

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Re: Some starting advice for two steppers on one axis
« Reply #19 on: February 27, 2016, 07:41:16 AM »
Yes, sorry Russ - I was referring to the Bob.

Tweakie.
KEEP SAFE !