Gunner, we just bought a used GT 75 and got it set up and wired Wednesday.
Came with a CNC Enhancements Hydro-turn bar feeder. First off, it had a bad
fan in the controller power supply, and would error out the servos randomly
as to X or Z. I took it apart and found the bad fan, replaced the fan, and
it seems to run ok now. I felt right at home in that thing, being it's PC
based. It ran cutting air all day Thursday without missing a beat. We
normally run Brownies and Davenports, so this will be a new adventure for
us. Any hints to stay out of trouble? Other than education?

RJ

"Gunner" wrote in message
...
On Sat, 31 Jan 2004 23:06:31 -0500, "Peter Kiproff"
wrote:

There must be a better more automatic way !

I have a lathe, that I love dearly, I have added stepping motors to it so
it's kinda CNC
however one of the tasks I do is to use the dead center & manually drill
a
hole so that a boring bar
can be used to bring it out to the required size.

I want to combine both steps into an automatic cycle, that runs without
me
turning the wheels.

My thought was to mount the drill bit on the carriage, lets call it a
1/2"
drill bit 6" long.
About 1" down from the cutting end, Tig weld a piece of HSS in the flute,
sticking out maybe .050"
as the drill enters the material " usually 2" aluminum 3 to 5 " long."
After the first inch the HSS will also start cutting & opening up the
hole
further. Then pretending this is also a boring bar keep making passes
until
the desired ID is reached.

I assume that a drilling or pecking cycle would be used to get the bit
through & keep the chips out.

What method do you use? Is there a tool for this kind of work?

I'm not concerned about speed, even .010" cuts as long as I can walk away
are fine.

Helpful hints from real machinists are most welcome.

Thanks for listening

Peter

www.omniturn.com

They make good tools for the job. I sell and service them if you need
one.

Gunner

Liberals - Cosmopolitan critics, men who are the friends
of every country save their own. Benjamin Disraeli