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+---- Thread: Threading Dial (/thread-2059.html)
Threading Dial - Hawkeye - 03-25-2014
My Swedish Storebro lathe was set up for metric threading, although it has a 4 tpi leadscrew and QCGB settings for "English" threads. It never had a threading dial - no mounting holes or other indications of one. Since I do more standard threads than metric, I decided to make one.
A week or two ago, I made up the gear to follow the leadscrew out of ABS.
[attachment=7995]
I was going to make the body out of cast iron. I cut down a piece of scrap on the bandsaw.
[attachment=7993]
Unfortunately, close inspection revealed a crack, so it was rejected.
[attachment=7994]
Plan B was an aluminum body, cut down, squared, turned, drilled and bored. I left it square to match the styling of the Storebro.
[attachment=7996]
The dial spindle was turned down from a piece of steel bar. 1" dial, 3/8" shaft, 5/16" x 24 thread to hold the gear. The eight notches were scored with a marking rig I made a couple of years ago, then the four quadrants stamped.
[attachment=7997]
After assembly, the threading dial was mounted on the carriage. That's right, on the left side. This lathe has an apron layout that's the reverse of what most of us are used to. There was no easy way to mount it over the handwheel hub and oilers, plus, since the half-nut lever is on the left side, it made sense to have the dial close to that.
[attachment=7998]
The down side of having the dial on the left is that it might conflict with the carriage stop. I designed the body to work around the stop.
[attachment=7999]
Shots of the gear engaged ...
[attachment=8000]
and disengaged.
[attachment=8001]
I should mention that you need to adjust the dial so that it aligns with the reference mark when the half-nuts are closed.
RE: Threading Dial - stevec - 03-26-2014
Good job Mike. I've often thought the threading dial should be on the left side, right in the line of sight with the cut that's happening.
RE: Threading Dial - krv3000 - 03-26-2014
hi and brill work
RE: Threading Dial - doubleboost - 03-26-2014
Very nice
Good pictures as well
I do like to see attention to detail
John
RE: Threading Dial - Micktoon - 03-26-2014
Hi Mike, a very neat job you have made there, it does look weird seeing it on the other side to normal but I am sure it will work just as well either side
Cheers Mick.
RE: Threading Dial - TomG - 03-26-2014
Nice job Mike. It looks like it belongs there.
Tom
RE: Threading Dial - DaveH - 03-26-2014
Very nicely done Mike
DaveH
RE: Threading Dial - Hawkeye - 03-26-2014
Thanks, gents. I have to admit that, every now and then, I turn the wrong crank. I'm still used to the 'standard' layout that I've had on every other lathe I've owned.
RE: Threading Dial - kenne - 06-17-2014
Very nice , great work and design . I may do the same thing on my Logan .