Re: [CAD_CAM_EDM_DRO] Re: Did It

seb fontana wrote:

> Jon..it is cnc..I looked closer as I was cleaning it today and in
>the manual..machine has encoders in X and Y motors and another set of
>sensors [trak term] that rub against x and y axis..Z axis encoder is
>driven off the ballscrew as the drive motor can be disengaged for
>manual quill feed...All have corigated cables to pendat or power
>control cabinate..motors are DC brush servo rated at 280 in-oz max
>continuous torque and it is programed in conversational..Has casset
>tape, RS232, remote stop/go ports. I have programed some simple
>circles, hole paterns and works as it should..when I push the right
>buttons !! I don't know how much memory it is capable of but hoping
>somehow to get to use PC for storage [disc?] and programing.
> As for putting Z motor to drive knee I think motor would be strong
>enough with some help from a counter weight and finding suitable
>encoder to put in motor. Knee ways are very good as is all other
>ways. This would let me put the power quill feed back in head [Was
>removed for Z cnc drive] for boring.
>

I've done boring with CNC, it worked fine. I have no need for the
manual features.

> May not have to if Z can be
>programed to feed in thousands per rev [need spindle tach?] and come
>to positive stop..
>

Well, there's no need for the quill to be perfectly synchronized to the
spindle rotation for boring. You do need that for hard tapping, but that
is the only need for it. Certainly, you can set the spindle for 1000 RPM,
and advance at 10 IPM, and know the advance is .01" per rev within a
small amount. And, of course, a CNC can stop within .001" or so, far
better than and depth stop on the power feed could ever do.

Jon