Friday, October 06, 2006
Tommelise x-axis underway...
I've included a partially assembled Mk II and the GM8 for scale.
I disassembled Godzilla's x-axis and salvaged the lumber and 3/8-24 threaded rod. It turned out that the salvaged threaded rod was much straighter than the one I had in Tommelise's y-axis so I did a swap. The y-axis runs much more smoothly now.
Later on I fabricated a mockup of the z-axis mounting plane so that I could see if using the frame of the x-axis for a guide rod was going to be viable.
It is. The mounting plane will have to be deeper than shown here.
Using guide-rods on that axis tend to have a bit of sway, so a solid wood frame was a great idea.
The real key spot seems to be ensuring that motor torque is not wasted before it's converted into sliding movement. So smoothing/polishing the threaded rod and finding a good lubricant seems to have more impact. Anything that improves the transfer of rotation to sliding movement will help a lot to, like changing the threaded rod thread profile.
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