Hello to all.

I have this Indexer assembly, taking 5C collets, and with a neat dovetail base and leadscrew nut, but none of the rest of what this Indexer may once have been a part of. Does anyone recognize this item and have any idea what it was fitted to or what its task was?

It has a collar with 12 indexing slots into which the index pin slides.

These slots are numbered in a very strange manner – There is a grub screw in the collar which fixes the collar to the indexing hollow shaft. That grubscrew lines up with a slot in the indexing collar. Starting from that position, going clockwise, the numbers read – 6 -4&3 – 6 – 2 – 6&4 – 3 – 6 -4 -6 2&3 – 4&6 – grubscrew – and then start again.

The '4&3' numbers denote 2 numbers on one slot position, ie, 4&3 or 6&4, etc.

There is no number 1 or number 5…etc. Very strange…

It has a nice dovetail base with a fine thread brass/bronze leadscrew nut attached.

????

Joe

Thanks for the heads up fellows. With that info it was easy to dig on the net and I found a number of cutter grinders that have what looks like the identical indexor on – seems though that these all do only the tips of cutters, ie, drills, endmills and CSK bits. The collet holder does not slide in the housing, so no side of tools could be done on these machines from what I see – unless the entire holder/carriage could slide laterally, I suppose.

Thanks again for enlightening me – Obvious now, but that's the luxury of hindsight…

Joe