does it make sense to install a single axis DRO on the manual knee of my Bridgeport Boss? This will allow me to drop the knee when I need to load a long tool, and raise it back to the original Z 0 so I don't have to reset the tool length offsets of the other tools. Right?
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Knee DRO
- Thread starter Jonathans
- Start date
- Replies 10
- Views 2,835
Mebfab
Diamond
- Joined
- Jun 7, 2003
- Location
- Mebane North Carolina USA
Why bother, no backlash on knee. Preloaded by its own weight. Put on quill.
moonlight machine
Diamond
- Joined
- Nov 19, 2007
- Location
- marysville ohio
You can use a digital caliper. Make a bracket and bolt it on, job done.
Modelman
Titanium
- Joined
- Sep 12, 2007
- Location
- Northern Illinois
What is the matter with the dial? Easy to set the zero, then drop the knee some even amount like .5" or 1".
Dennis
Dennis
sophtayl
Cast Iron
- Joined
- Apr 16, 2009
- Location
- Thirlmere, NSW, Australia
Do you have a dro on the other axes? I fitted a 3 axis dro on my knee mill when I bought it and it has been worth every cent. Having only 1 axis would be a waste
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Jay Fleming
Hot Rolled
- Joined
- Aug 7, 2014
- Location
- Noble, OK
I have a similar cnc knee mill and never thought to put a DRO on the knee. It would be extremely useful IMO.
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moonlight machine
Diamond
- Joined
- Nov 19, 2007
- Location
- marysville ohio
Refer to post 3, that is what I did on my Centroid V2xT Bridgeport.
wesg
Titanium
- Joined
- Nov 4, 2004
3axis dro + mitutoyo quill kit = happiness
Better, on a manual mill, add a real scale and link the 2 in the DRO so you have actual tool length no matter where the knee or quill is. I'd like that on my lathe tailstock base and quill as well.
DRO seems better for a CNC. More flexible, easier to read and set zero. Might want more than one zero for different tools. Otherwise, anything from a scale and the dial, long travel indicator, Travadial, would work.
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