Tailstock tap and die holders.

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Gerhard Olivier:
Thanks Stew

Today I started to make the holder for the 1" and bigger dies. This I wanted to fit over the tailstock barrel as it is less trouble and a nice size to bore to 26mm. A piece of Ali 41mm chucked up cut concentric and drilled to 18mm my biggest drill size and then bored to 26mm. Al the sharps removed and ready to knurl.

Knurled

and profiled

Then cut on the bandsaw and face cut THAT is when it snagged and made a couple of dents thant dont look as nice as I would have liked. :( Not that bad.

Four arms 8mm brass with m6 thread each end.

Cut some ALi blanks for the balls

Faced one side using the saddle stop so they are all same width and the drilled and threaded m6

Then I cut the piece of 20mm mild steel to a taper mandrel with a m6 thread at the end ( taper is to make it as strong as poss but allow acces to the ball).
The next step was to face cut all of the blanks on the mandrel and cut them all consentric. Then the Radius cutter was fitted to the cross slide and the sadle locked at the centre of the ball and ball cutter. The ball cutter was set to the diameter of the blank. The cross slide stop was set at the depth of cut to give a ball not an oval. Then it is just a matter of do 4 cutts and end up with 4 balls ( It is worth remembering to leave your last cut a fraction short to have space for a finishing cut.)

YES I DID FORGET TO DRILL AND TAP THE 2 GRUB SREW THREADS FOR THE DIE HOLDER BEFORE REMOVING FROM THE RT TO HASTY WILL PAY FOR THAT ANOTHER DAY :doh:

Gerhard

jim:
them balls look great!

nice bit of work there :clap:

i'l get around to finishing my ball turner tomorrow :scratch:

chuck foster:
looking real good gerhard................looks to good to use :thumbup:

i started making some of those about 2 years ago.............i guess the metal has aged long enough :lol:

chuck :wave:

Gerhard Olivier:
Jim Thanks and good luck with the BT

Chuck thanks and Metal cant age enough it just gets better and better. :proj: makes finishing some proj very difficult.

Gerhard

Gerhard Olivier:
Next bit

I cut 6 blanks of 41mm Ali 28mm long

Then using the 3 jaw chuck with outside jaws drilled and bored the holes 12mm right through and the size of the die and depth to suite the die. The one side was given a facing cut but not the outer diameter - this was left as is for now.

Then removed the 3jaw chuch and fitted the er32 collet chuck and mounted the Expanding arbour.

The die holders was then mounted with the skimmed surface and the die bore to the chuck side and the diameter skimmed and part of it reduced to 26mm to fit the holder holder. and the last face skimmed. (This was done so everything was concentric with the centre bore as my 3 jaw chuck is very bad)

This is the holder with the 6 holders and the dies fitted in loosely.

And a mock-up of the end result again

Gerhard

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