Re: [CAD_CAM_EDM_DRO] Air assist on Series II knee?

Hello Tim
On the gorton I once rebuilt I had to play with the counterbalance quite a bit.
At the end I put it in the middle exactly the same way You did. and then
tried to force up and down with a pry bar on some wood.
I felt comfortable when the force to push up was the same as to push down.
Anyway that unit had a powerful hydraulic unit.
Good Luck
my wife is calling for breakfast.
Sven Peter

Tim Goldstein wrote:

> Wife's away so I went out to play. Got an air line installed to replace the
> rotted hose. Hooked it up to the compressor and started playing with the
> pressure. Had the knee sitting about 1/2 way up with a wood block under it
> so I could work on putting the line in. Started cranking on the regulator
> and took it all the way to the 120 psi that my little compressor is capable
> of (Be putting a 6-1/2 hp unit in this week to replace this little 2 hp
> job). Nothing obvious happened. I then turned on the stepper driver and
> lifted the table off the block then switched off the driver. The table
> stayed in place. I then started reducing the pressure and at just under 40
> psi the table started to sink. So it appears that Bridgett's air assist is
> working fine. I looked underneath and I still don't see how it works, but
> know that it does work.
>
> Anyone know how you tell the proper pressure to run on one of these? It
> seems that anything from 40 - 120 psi will hold the table in place.
>
> Tim
> [Denver, CO]
>
> Back to real chores :-(
>
> > Hello Tim
> > I suggest there is a air or hydraulic cilinder driven by a air converter
> > to counterbalance the weight of the knee.
> > This is the feature you find in many machines to ease work and
> > the z motor. You adjust the presure to the point that the knee is
> > free floting.
> > Good Luck
> > Sven Peter
> > >
> > > FAQ: http://www.ktmarketing.com/faq.html
>
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