On 12/07/2020 05:19 AM, andy pugh wrote:
On Mon, 7 Dec 2020 at 11:13, Gene Heskett <[email protected]> wrote:
Now comes the improvement request for two more pins into motion.
I need a pin to disable the backlash move, until the spindle has actually
stopped.
Are you sure that isn't what already happens? (I guess that Halscope
can answer the question).
I would expect the Z axis backlash reverse to happen when the Z axis
actually changes direction, based on the encoder direction change.
Have you considered a floating tap holder? You wouldn't need much float.
Yes, as a matter of fact, Gene reports 2 mils of backlash
comp. I find it hard to believe THAT is the cause of sloppy
threads, especially on a small-light machine. I would think
it has enough flex that that would not cause the thread to
be harmed. I'm guessing there is more movement or a
following lag on the reversal that is causing the issue.
Jon
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