Re: [CAD_CAM_EDM_DRO] Re: plasma cutting table

Some of things to consider:
1) the work was placed on a grid system which allowed the water to contact
most of the work and keep it cool (the grid system *was* a bit pitted from
use)
2)Plasma cutters aren't generally used fo very thick metal- This guy had a
cutting torch on the same carriage for the thick stuff
3)the guy used a microprocessor (I think it was a Basic Stamp 1) to control
cutting distance. I think he measured resistance or current flow of the arc.
4) he also controlled water level and I think this varied with work thickness
5) the cuttting speed had to be carefully controlled to keep the cut
vertical,especially at corners. this was done in software
6) I probably have this all wrong. I was trying to absorb a lot of info in a
couple of hour demo

Larry


In a message dated 3/28/02 8:06:26 PM Pacific Standard Time,
davemucha@... writes:

>
> Interesting,
>
> about how far does the plasma extend from the tip of the cutter ?
>
> I was thinking that if it is anything like a cutting torch, it will
> cut right through the table below it if the table is in good contact
> with the part being cut.
>
> I have seen a wavy support bed on some plasma cuting tables and
> thought that is to prevent a straight line cut from splitting the
> table in two.
>
> Dave
>
>
>
> --- In CAD_CAM_EDM_DRO@y..., ljgeib@a... wrote:
> > the best setup I've seen is a plasma cutter that had a water bath
> that came
> > to the bottom of the work. It didn't have any of the clouds of dirt
> generaly
> > associated with the process.
> >
> > Larry
>

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