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Horizontal Mill Bent Arbor?
- Thread starter omni_dilletante
- Start date
Thank you for the information and assurance that I do not have serious problems.
A bit more information on the mill.
I indicated the arbor shaft to determine the run out. I did not think I would be able to get a good reading off the cutter teeth, I will give that a try so I can see what the run out is when the arbor nut is tight.
Shaft is very smooth, no galling to be found anywhere. Cutter fits snugly to shaft.
I tried two different cutters moving spacers around so they were on different parts of the shaft. Every combination resulted in the same noise. Regardless of how I positioned the cutters the noise followed the high spot on the arbor. This makes me believe the issue is not with the cutters.
I cleaned the interface between arbor and mill a couple of times and checked for galling and found nothing.
Someone made the comment that if a spacer that did not have parallel ends would put pressure on the arbor and cause it to bend. This gives me the idea to create a spacer and then lap one side so the spacer has a slight taper and then see if I can position that to change the run out for the better.
I will try a few more things and if I can improve the sound will post more information.
Again, thanks for the help.
A bit more information on the mill.
I indicated the arbor shaft to determine the run out. I did not think I would be able to get a good reading off the cutter teeth, I will give that a try so I can see what the run out is when the arbor nut is tight.
Shaft is very smooth, no galling to be found anywhere. Cutter fits snugly to shaft.
I tried two different cutters moving spacers around so they were on different parts of the shaft. Every combination resulted in the same noise. Regardless of how I positioned the cutters the noise followed the high spot on the arbor. This makes me believe the issue is not with the cutters.
I cleaned the interface between arbor and mill a couple of times and checked for galling and found nothing.
Someone made the comment that if a spacer that did not have parallel ends would put pressure on the arbor and cause it to bend. This gives me the idea to create a spacer and then lap one side so the spacer has a slight taper and then see if I can position that to change the run out for the better.
I will try a few more things and if I can improve the sound will post more information.
Again, thanks for the help.
Another cause for arbor runout is crud or chips or burrs in between the arbor spacers; when the nut is tightened, the arbor springs. The cure is to take all the spacers off and clean and lightly stone each side. I agree with others, it is obvious that the cutter is running out MUCH more than .001, and either there is a loose fit on the arbor or the cutter is ground eccentric; I've seen cutters with metric sized holes that give that effect.
I recently installed my long horizontal arbor on my VN no 10 and noticed 0.081" runout at the very end. This has caused the overam support to flex slightly (dont think it would break it). The 5" cutter I have will only cut on a few of the teeth due to the runout.
Is there any way to correct the runout and bring the arbor into better alignment?
Is there any way to correct the runout and bring the arbor into better alignment?
Keith Fenner shows how to bend shafts but YA need rollers and heat and hydraulic press. Of course indicators. Sometimes just heat will bring them back . He shows how on several YouTube videos.