| Gallery, Projects and General > How do I?? |
| mini-lathe leadscrew clutch? |
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| MetalMuncher:
While deciding how to proceed with this idea, one thing I am concerned about is the integrity (rigidity, endplay) of the leadscrew itself. Many of us have taken pains to make sure the leadscrew has no unwanted movement. Adding a dog or yoke style clutch to the shaft would require separating it into 2 pieces. That would mean needing ways to support the new ends of each half, in addition to also designing the clutch itself to not allow unwanted movement, such as endplay or flex of the shaft across the clutch joint. |
| tom osselton:
Can you have a sliding gear on a idler shaft to engage or disengage the gear? |
| rick barnes:
Just dog clutch it. Have to stop motor to engage... Well supposed to anyway. |
| drmico60:
--- Quote from: MetalMuncher on April 26, 2014, 06:52:58 PM --- --- Quote from: drmico60 on April 26, 2014, 10:39:34 AM ---.weebly.com/new-threading-banjo.html --- End quote --- Very nice! Now I understand the "banjo" nickname for this device. Your autostop mod looks interesting too. But why do you have it made so you have to choose between auto stop and using the DRO? Is there no way to use them concurrently? A later post by Tomrux poses a valid concern about things moving out of mesh at the least desirable moment. But I am thinking there must be a way to fit a control lever to the banjo which would have some sort of positive detent arrangement, like the reverse lever on the back of a mini-lathe, so the banjo position would be safely constrained. Maybe even similar to some of the pro lathe controls which protrude from a curved surface, and have a spring loaded knob that is more flat than the shaft used for reversal on thep lathe. --- End quote --- I cannot see how you can effectively use the dro whilst using the autostop. You use the DRO to set the autostop but once the cut is being made the dro serves no purpose. With my banjo it is clamped very securely to the lefthand pillow block extension and I have had no problems with the gears disengaging during use. Mike |
| Brass_Machine:
I can't find the link I was looking for... I hope I didn't imagine it. :Doh: |
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