Re: Quick Change Tooling

Hi Joe:

Are you trying to say the impact wrench is supported on a couple of
guide rails and slides up and down. And what controls the up and
down movement, is it a lever you pull or an air cylinder. And lastly
is the end of the impact just a simple socket engaging the standard
draw bar. If this is the case then the impact must be started to
register the socket with the nut to get them to engage.

Wally K.

--- In CAD_CAM_EDM_DRO@egroups.com, Joe Vicars <jvicars@c...> wrote:
> The "el-cheapo" method is to put the whole impact wrench on a
pair of columns with a spring. To engage or disengage a collet
> you pull down then hit the lever "in" or "out". When you release,
the whole thing pops up off the drawbar nut.
> The Kurt and others are a little more sophisticated (although
still use an impact wrench) and I am not sure how they
> engage/disengage.
> It would be pretty easy to duplicate the cheap ones. Watch
over torque-ing the threads though. Use regulated air to get the
> torque down.
> Note that the impact wrench we are talking about here is the
small 3/8" butterfly style. Not the big-uns.
>
> Wally K wrote:
>
> > Hi Joe:
> >
> > I was thinking about building somthing like your description of
the
> > impact wrench quick change. In your description you said a
spring is
> > used to disengage the socket from the drawbar. is the mechanism
used
> > to engage the socket a "bendix" type or is it simpiler.
> >
> > Wally K.
> >
> > --- In CAD_CAM_EDM_DRO@egroups.com, Joe Vicars <jvicars@c...>
wrote:
> > > I missed most of this thread, so excuse my repeats.
> > > Most of the power drawbar retrofits are nothing more than an
> > impact
> > > wrench mounted to the top of the machine with a spring to
disengage
> > the
> > > socket. Real quick change spindles do not operate on the same
> > principal
> > > as the R8
> > > Other "quick change" are collet adapters with R8 shanks.
They
> > are
> > > quick because you don't have to mess with the drawbar once they
are
> > > installed. But you do have to have a spindle break and use
their
> > wrench
> > > and collets.
> >
> >
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