traditional edm gap control as developed by the Lazerenko's is based of
maintaining a gap voltage.
* non-traditional ( in the niche of EDM ) can be ignition delay based,
current exchange
* or a hybrid ( see JSEM journals the japanese journals or ISEM for
the rest of the EDM world
or google 'gap control' to see other forms of cnc not based on 'be at
predicted position at specific time'
( linuxcnc is position based on time&velocity,
edm is position based on THE chosen process feedback
you can choose the process variable you like to use )
to truly use a process control scheme in linuxcnc requires a huge
re-write imo
to hack some motion that follows the process variable is not difficult,
but (imop) lies in HAL not in the linuxcnc motion module.
On 02/26/2016 06:07 PM, Nicklas Karlsson wrote:
>>> edm Anybody familiar with EDM who could tell me how to adjust the feed rate
>>> for EDM operations?
>> Not a very trivial task but it can be done. There is a youtube video
>> showing and EDM running on linuxcnc. Do a search. The problem comes in
>> when you have to backup as some EDM machines do.
> Programming I could solve. Then controlling speed and backup what do they try
> to achieve: A certain average gap voltage? Ignition voltage? Power in each
> pulse?
>
>
> Nicklas Karlsson
>
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