On 11/18/22 19:20, Jon Elson wrote:
Well, I wanted to give an update. I finally ran some production parts
on my retrofitted R2E3.
I had some issues with the spindle VFD causing communication errors
between the PC and my PPMC boards, and fixed that by running a ground
wire between the PC and the PPMC card cage. Then, I had an issue with
the spindle encoder not producing the index pulse. It turns out the
centering of the encoder body to the shaft is very critical. I bored
out the mounting holes about .003" bigger and found the sweet spot for
it. And, I rigid tapped 216 holes with a combo drill-tap at 1000 RPM!
I'm still collecting enough Kwik Switch 200 tooling to be fully set up.
Jon
I've not had any trouble with that as I ignore the index from the omron
encoder on the motors back shaft, instead using a screw glued to the
side of the spindle to trip an ATS-667 hall effect for an index pulse. I
scale change from the tally switches on the gearshift knob. So my tach
display is dead accurate in either gear. I say dead accurate, the scale
was determined by subtracting the encoder count at 3 turns from the
encoder count at 103 turns and dividing that by shifting the decimal
point two digits left, instant 1% accuracy in either gear.
I finally did find my round tuit and measured my column tilt, worst case
was x, off about 3 thou in the height of that circular square, so my
major error is tramming related. On the go704, that tilt is very hard to
correct, no vernier available.
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Cheers, Gene Heskett.
--
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soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
Genes Web page <http://geneslinuxbox.net:6309/>
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