Rotary Table Theory Question

[Ischgl99]

For a quill stop for your mill, would something like this work for your mill? The collar has an internal spline matching the spindle spline and a tightening screw. You position it for your depth of cut, you can use gage blocks, endmill shanks, calipers, etc., then tighten it. As the spindle lowers, it bumps up against the upper side of the pulley and stops the spindle lowering. My mill doesn’t have a power downfeed, so nothing needs to get disengaged, you feed until you can’t feed any more.

 

[ChandlerJPerry]

For a quill stop for your mill, would something like this work for your mill? The collar has an internal spline matching the spindle spline and a tightening screw. You position it for your depth of cut, you can use gage blocks, endmill shanks, calipers, etc., then tighten it. As the spindle lowers, it bumps up against the upper side of the pulley and stops the spindle lowering. My mill doesn’t have a power downfeed, so nothing needs to get disengaged, you feed until you can’t feed any more.

View attachment 504579

For a moment I was really hopeful that this would present a simple yet elegant solution, but I was foiled again. The total quill travel is 4" on this machine, but only about 2 1/8" of the spindle spline is exposed with the quill fully retracted.

 

[Weldingrod1]

Hex clamping collar plus a spacer tube?

Sent from my SM-S911U using Tapatalk

 

[Ischgl99]

That sucks. The hex collar weldingrod mentions might be workable. As long as it can slide up and down while loosened and have a way to clamp it, it should work the same as one on the spline.

 

[Parlo]

The guy who wanted me to make these for him didn't follow through in the end, but in the interest of the discussion occurring I'll confirm that I had been planning to locate the bores by touching off the outer edge of the part with an edge finder while the part was angled. Using my CAD software I measured the distance in this condition on the model and therefore knew the measurement.

It's a great idea to find various reference dimensions on the cad. I don't work from sharp corners as I never quite know how sharp they are. Perhaps draw a roller sat in the vee created from the edge of the part and the base that the part is sitting on. You can then find the edge of the roller with an edgefinder and move the required distance.