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Modifying a Southbend Headstock for Indexing

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Darren:
Thanks John, I must have missed that..... :thumbup:

bogstandard:
Glad you like it, here is a pic showing the setup figures for a 4" diameter plate with 64 x 1/8" holes based around a 00 centre location.

I don't think you need anything other than this, except an accurate DRO.

Just to clarify, the first column is the x axis (begins with 2.000)(2" from the centre point) the second column is the y axis (0.000)(in line with the centre point). These relate to the centre point of the whole circle 0-0.

Bogs

I have added the prog to the download section, it is free to use as long as it isn't used for monetary gain.
It should be available when it gets authorised by the boss.

http://madmodder.net/index.php?action=downloads;sa=myfiles;u=53

Darren:
Hi John,

Downloaded the program and it looks a cracker,
Although it didn't help me today as I don't have a DRO  :D

I was rather hoping it would give the distance between the holes but it doesn't...oh well.
I only had three holes to do this time so did it manually, accuracy wasn't really important in this case so that was ok.

See new post tonight under projects/Lister genset

Cheers Darren  :wave:

Bernd:
Finally got some stock to make the clamp. Go back to the first pic of Steve's pic. You'll get the idea.


Ok, I laid out where I needed to drill the holes and the approximate shape.


Now I needed to line up the straight line I scribed to mill about 1" off the top.


This how I aligned the part. You will need three hands or a pair of vise grips set to grip very gently to not ruin the parallel.


Next two machinist clamps to hold the parallel in place. An indicator to align the part and a large rubber mallet for slight ajustment.


And away we go. The first .200" cut at 3 iches per minute.


Almost there. Another .5" lower and I'll be done.


Ta Da, done. Both sides that is. Now to drill the hole for the cotter clamp.


The next few days I'll be showing how to design a cotter clamp and install it on the part.

Bernd

Modified to get correct picture above. 2nd pic.

HS93:
ok whats the pink stuff, I have never had any luck with the blue stuff it,s eather streakey or to thick I have just got some new stuff and its no better, or it may be the way I put it on. anyway that looks like it could be different as you have it nice and consistant.

Peter

 :bang:

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