On 11/8/23 02:50, Thomas J Powderly wrote:
Hello
There is a machining process with the confusing name 'fast wedm'
Mostly Chines Taiwanese and Indian designs.
The name refers to the wire speed(m/S)
not the cutting speed (mm^2/min)
I'd like to try this machining method.
In this method the wire is reused,
it is wound onto a drum , which has to reverse.
There is a sequence of
cut, stop wire and edm power, reverse. cut (rinse repeat)
The cut is interrupted,
and its desirable pt keep the interruption time small
I guess this is like a lathe during rigid tapping, correct?
How does Linuxcnc handle the reversing of a lathe head and chuck?
( I think the mass of the drum is much less )
How quick is the reversal?
How long is the stopped state?
Is this done with a Vfd, maybe some hal/ladder code?
Thanks for any insights
TomP
( the reasons to use 'fast wedm' is economy,
its a LOT cheaper to build and supply
It is not as fast nor as accurate as 'slow wedm'.
It is cheaper and messier ;-)
for visual reference
https://www.youtube.com/watch?v=h7Wb73jtWhg
Obviously that machine has never encountered anyone who knows anything
about controls. Except for stringing a replacement wire, that should all
be controlled by LinuxCNC. A place to sell your talents TomP?
Cheers, Gene Heskett.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
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