Re: [CAD_CAM_EDM_DRO] Re: Software for wire EDM control?

>
> Alan,
> I don't know what it senses to decide to reverse the cut. But it usually
> happens at the end of the toolpath when the normal cut condition suddenly
> changes as the scrap drops and the cut current disappears or shorts.
> I suppose a timeout for this is taken if nothing returns to normal quickly
> and halts the prog.
> This may happen just as the last block is read and the machine has not quite
> reached the commanded position. Also, dirty material and gaps between
> sandwiched stacked pieces can cause backups and breaks.
> This machine is servo driven x-y 15 x 15" and u-v 5 x 5" (upper axis')
> Once you get the fastest optimum cut speed set, after well into the material,
> the speed is fairly constant, but still being watched by the controller for
> shorts, breaks and anything that cannot support the set speed (condition).
> The video display shows a dynamic bar meter of the voltage, cut speed in
> "/min and several other parametrs. There are many other "pages" that show the
> program progression, files, internal computer settings, back plot (with a dot
> following the actual cut progress) and machine home and fixture offset coordinates.
> Just a look at these screen shots are good to glean info from.
> The O/S is DOS. No hard drive.
> I will select a few shots & send them on direct. Anyone else?
> RichD
>