Step-Direction vs Analog Command vs CW/CCW Signals

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13 Sep 2019 00:40 #145008 by bevins
You become really good friends with HalScope whilst tuning........
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13 Sep 2019 00:59 #145009 by thefabricator03
Thanks bevins,

I guess at that price point you cant be picky, I have similar pricing for other china brand servos, I will see what I negotiate with them.

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13 Sep 2019 01:03 - 13 Sep 2019 01:07 #145010 by bevins

thefabricator03 wrote: Thanks bevins,

I guess at that price point you cant be picky, I have similar pricing for other china brand servos, I will see what I negotiate with them.


We could run it at 2100 inches per minute. I think that was 800 ipm or something like that in the video.
It is loud because of the rack and pinion.
We had a 10:1 planetary gearbox on the two Y motors and the X motor. THe Z just has a brake.

Last edit: 13 Sep 2019 01:07 by bevins.
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13 Sep 2019 03:31 #145025 by rodw

bevins wrote: It is loud because of the rack and pinion.

Just a good Microphone!

And it seems a very coarse straight rack at that. I used one straight rack on X and 2 helical on the Y and I will never use a noisy straight rack again!

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13 Sep 2019 09:55 #145041 by tommylight

thefabricator03 wrote:

tommylight wrote: 9 Axis, much more joints, i think, in version 2.8 and 2.9 of Linuxcnc .


Yeah thats right 9 axises, and each axis can be comprised of multiple joints.

Tom, What are your thoughts on a 6 axis robot retrofit with Linuxcnc? For this robot there really is no other option. It was made in 1991 and the ERC contoller is very much antiquated.

I would not thing to much about it, just do it.
There are several success stories around, and from what i read the only tricky part is getting the kinematics right, meaning the angles, lengths, and how they interact with each other.
CAM might be a bigger issue.
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13 Sep 2019 10:04 - 13 Sep 2019 10:04 #145042 by thefabricator03

tommylight wrote: CAM might be a bigger issue.


Na I have CAM sorted,

Between Big Johns Teach-in.py script and this robodk.com/index
Last edit: 13 Sep 2019 10:04 by thefabricator03.
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13 Sep 2019 11:19 #145049 by tommylight

thefabricator03 wrote:

tommylight wrote: CAM might be a bigger issue.


Na I have CAM sorted,

Between Big Johns Teach-in.py script and this robodk.com/index


Nice.

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