What is that on top of the mill's head? Drawbar or a place tomount encoder?
 

Yes, the spindle is a splined, two part thing and the hollow top of
the spindle stays in place, regardless of the Z axis position (bottom
part).

This means that mounting an encoder on the top is very easy, just a
little machining exercise to make something that I can stick inside
and make it stay connected to the spindle, with some little top piece
to mount encoder wheel.

What is that on top of the mill's head? Drawbar or a place to mount encoder?
 

On Mon, 26 Jul 2010 00:36:28 -0500, Ignoramus1880
wrote:

Yes, the spindle is a splined, two part thing and the hollow top of
the spindle stays in place, regardless of the Z axis position (bottom
part).

This means that mounting an encoder on the top is very easy, just a
little machining exercise to make something that I can stick inside
and make it stay connected to the spindle, with some little top piece
to mount encoder wheel.


Correct. Try something that will expand into the top of the spindle.
Its not a "wet" area, so your choice of materials is quite wide.

Gunner

One could not be a successful Leftwinger without realizing that,
in contrast to the popular conception supported by newspapers
and mothers of Leftwingers, a goodly number of Leftwingers are
not only narrow-minded and dull, but also just stupid.
Gunner Asch

What is that on top of the mill's head? Drawbar or a place to mount encoder?
 

On 2010-07-26, Ignoramus1880 wrote:
Yes, the spindle is a splined, two part thing and the hollow top of
the spindle stays in place, regardless of the Z axis position (bottom
part).

This means that mounting an encoder on the top is very easy, just a
little machining exercise to make something that I can stick inside
and make it stay connected to the spindle, with some little top piece
to mount encoder wheel.

Great!

Enjoy,
DoN.

--
Remove oil spill source from e-mail
Email: | Voice (all times): (703) 938-4564
(too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html
--- Black Holes are where God is dividing by zero ---

What is that on top of the mill's head? Drawbar or a place tomount encoder?
 

On 2010-07-26, Gunner Asch wrote:
On Mon, 26 Jul 2010 00:36:28 -0500, Ignoramus1880
wrote:

Yes, the spindle is a splined, two part thing and the hollow top of
the spindle stays in place, regardless of the Z axis position (bottom
part).

This means that mounting an encoder on the top is very easy, just a
little machining exercise to make something that I can stick inside
and make it stay connected to the spindle, with some little top piece
to mount encoder wheel.


Correct. Try something that will expand into the top of the spindle.
Its not a "wet" area, so your choice of materials is quite wide.

I think that I can easily make something from brass or some such. Let
me think.

it would be a fun and inexpensive improvement.

i