Re: [CAD_CAM_EDM_DRO] Re: Auto tool changers

EMCO TOOL CHANGER

There are a total of 6 positions, for tools, three lathe bits, three
boring/threading/drilling/reaming.

Because it is DC Motor driven it appears that it is a timed operation, it
drives in the advance direction for a certain period, stops, reverses, drives
back until the ratchet locks. The voltage on the motor is reduced in the
reverse direction, and does not shut off when the ratchet stops. It motor
sets there in a stalled, low voltage condition.
It appears to be only a simple timed circuit, with motor reversing, and
voltage reducing.
In the original EMCO software you could advance it as many positions as
desired up to 6, it would drive forward, stop, then drive forward again, at
the final position it would reverse and lock up the ratchet. However the
operator determined how many steps it went forward, to get to the desired
tool, you could not call a station number and go to it.

I forgot to mention the motor has a gear box on the end, driving into the
wormgear in the gear box. The worm gear is around 3:1 if I remember
correctly. I will try to get more information as time permits. I don't think
I will be able to tell you the ratio of the motor gearbox. Pretty small
sealed unit.

I will try to remember to bring this unit with me to NAMES for any that are
going to be there to look at.

The tool slots are:
width, 13.89 mm /.5465 in
depth, 11.90 mm /.4685 in
length: 61.11 mm / 2.406 long.
The turret looks like it was cut from a round blank, with three flats milled
on it. The radius if very close to: 59.86 mm / 2.365 in (Eyeball with a
calipers accuracy)
turret width is:59.86 mm / 2.3565 in
The top edge of the tool slots, and the center of the tool mounting holes are
at the lathe center height.

Hope this helps.
bill