Quill Rotation - Problem?

[Russ Kaiser]

I have a CNC Masters Baron XL Mill (zay 45 square column derivative, I think) and I have noticed a good bit of quill rotation under heavier loads. In this conversion the quill is automated for the Z axis. I am looking at the manual and an exploded parts diagram and for the life of me, I don't see an adjustment to keep the quill from rotating so much.

Is 10 to 15 degrees rotation of a quill normal?

Does anyone know where this is adjusted?

I will try to call CNC Master's tomorrow, but I wanted to continue working tonight if at all possible.

Thanks,

Russ

[SCzEngrgGroup]

On most machines with quills, the only thing that restrains the quill from rotating is engagement of the pinion gear in the toothed rack machined into the quill. there is often an eccentric adjuster to adjust the engagement.

Regards,
Ray L.

[Russ Kaiser]

Thanks Ray,

That's sort of what I thought. The whole issue sort of becomes a sticky wicket when you are rotating that pinion to position your z axis.

Russ

[Davo J]

I bought a HM52 over here in Australia and after receiving a replacement it was from a different manufacturer. The old one relied on the same set up as yours, but the new one had a slot in the quill and a pin. It would not be hard to machine a key way in and drill a hole in the casting and make the pin, but you would need another mill to do it.
I have put up some drawing in the link below for other members with a mill like mine, as it has a horizontal spindle and it can all be done on the same machine.
HM 52 quill slot - Woodwork Forums

Dave