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Modifying a Southbend Headstock for Indexing

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bogstandard:
Bernd,

Have you thought about 36 holes, 10 deg spacing, also gives you some the nice odd numbers. Then you could make a 'vernier hole' block that would give you the 1 deg spacing. Just like a spin indexer.

John

Bernd:
Bog's,

The thought here is to just get the indexer going. I've read up on the 'vernier hole' indexer method. Guy Lautard has that written up in his Bed Side Reader books.

If you have a spare moment could you give me a clue as to how I would attch that to what I have now? A quick C-o-C would be nice. Thanks.

What I'm trying to do here is make a quick indexer to use. Then I would like to add on either the worm and wheel like Mainer has done to his or go with the "vernier index" method. First I need to complete this step before I decide on the next step.

Bernd

Bernd:
Well I've drilled the holes in the part.



It definatly was much easier using the DRO. I even cheated and used Autosketch to get the hole dimensions. But I had it done in a short time.

I then remounted it to see what it looked like.



I've been in contact with Steve Wellcome. He had asked why I turned the shaft with the pulleys and gear on it. After I had reassmebled it I wondered why too. It serves no purpose. The old bull gear fits on quite tight on the shaft.

If you look close you'll notice I drilled the holes a bit to deep and have broken out on the sides. If this get's to be a problem then I'll just make another plate and fasten it to the now new index plate.

Next will come the designing of a index pawl and clamp to keep the shaft from turning.

Bernd

Darren:
Hi Bernd,

That looks really neat and well done, but when you say you used the DRO I havn't the foggiest how you'd go about using one to do this  :scratch:

Bernd:
Lets see if i can explain this.

I know that once I center the spindle over the center of the part and zero out the readout on the DRO, I will need to move the table 2.300" in the X direction and the Y axis you don't move. Drill the first hole. Then I move to the next hole from the cooridinats that I figured out.

Tell you what. Next time you are over to Bogs have him show you how it's done. It'll be easier to show than tell.

Bogs, would you be so kind and show Darren next time he is over how I did this. Thanks.

Bernd

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