Re: [CAD_CAM_EDM_DRO] Re: setting up the CNC mill

> You don't mention what type of stepper drivers are in the machine, but

I'll

> bet they take step/direction signals from the computer. I suspect that

the

> stepper driver not only shuts off the current to the motors, but also

RESETS

> the phase it is on when the current is turned back on again.
> I'm afraid, if my hypothesis is correct, that you should not power the
> steppers off when you have homed the machine, and want to go back
> to the same position.
>
> Jon

Actually that has become my newest approach, once I have the machien
dilaed ina dn turning out partsmconsitemntly if soemone comes to visit i
kick them out until I am done, otherwise I have to re zero the machine.
since the emco resolution is .001 I can't get coser than a 1/2 thou under
best circumstance. Here is something else I learned. I tried to just barely
touch up the tool bit while it was in the turret by kissing it with a
diamond lap. just one or two strokes, If those are even barely off I will
drag the backside of thepoint of the tool when it the code of the radius is
changing at one point from a G01 to a G03, there is a .010"G01 travel in
Z&X. The it finishes the ball end(see my website for a picture of what it it
I make for clarification) anyway thaat moment of going from G01 to G03 can
leave the backside of the tool dragging and reshape the entire profile of
the ball. So the nose radius has to ewither be perfect every time I grind
the bits or I have to adjust the program to avoid the tollnose dragging the
backside down the G03. DiD I lose you on that one? It took me a year to
figure out the best way was to have a tool that was working perfect to
prduce the parts to spec, well I sent them to a shop and had 40 of them
custom ground so when they break I just put a new one in, saving the others
for a new run.

Somone is going to ask why noy just get indexable tools? Well if they made
one that was as fine a tip as I use I would buy them and be done, the other
thing is it would get awful boring if I didn't have to worry or think at
all.

I am still working on that list of stuff to let go and I still am not solved
on the EMCO to anybody else software conversion. If anyone is usong an EMCO
F1 and has found a software CADCAM that works come on out with it please,
140 hours this wekek on this project of trying to find a software taht will
speak emcoi, that is nuts. I am pretty optimistic that Fred Smith and I are
onto something. The bobcad guys are friendlky but so far I am not drawing
and sending the drawing to F1 so I may have to revoke my glowing review of
the help desk, I will say they are polite and not condescendingor rude.
Johnno