Re: BP II duplicator conversion

Marv...just reviewed the pix. Thanx. They help in understanding the application of the "shocks" on the knee. As noted, the machine I was investigating does not have any type of screw knee height adjustment...just a hydraulic ram (nuts!). I will check with Femi and see if he has other photos to continue my education! Regards...Richard.

> Richard,
> I just found the originator of those pictures. It is Femi and you
> can reach him at Motovidia@a... . You should have received the photos off
> list.
>
> Marv Frankel
>
> ----- Original Message -----
> From: <rfs@c...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Tuesday, December 31, 2002 7:30 PM
> Subject: [CAD_CAM_EDM_DRO] Re: BP II duplicator conversion
>
>
> > Marv...I would be interested in seeing this solution. Jon recommended a
> similar approach. Must be that one then devises a ball screw drive to raise
> and lower once the knee is balanced?? Richard.
> >
> >
> > > Guys,
> > > One of the group recently sent me some photos of his conversion,
> and
> > > one photo shows the knee being counterbalanced by two 150 lb. gas shocks
> > > from McMaster-Carr. If you'd like to see them, I'll dig it up, and put
> you
> > > in touch with the guy.
> > >
> > > Marv Frankel
> > > Los Angeles
> > >
> > > ----- Original Message -----
> > > From: "Brian" <ka1bbg@w...>
> > > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > > Sent: Tuesday, December 31, 2002 3:46 PM
> > > Subject: Re: [CAD_CAM_EDM_DRO] BP II duplicator conversion
> > >
> > >
> > > > Hi, well a hefty set of gas shocks can counter weigh a knee.. some one
> on
> > > > this list is doing that. cul brian f.
> > > > ----- Original Message -----
> > > > From: <rfs@c...>
> > > > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > > > Sent: Monday, December 30, 2002 7:54 PM
> > > > Subject: [CAD_CAM_EDM_DRO] BP II duplicator conversion
> > > >
> > > >
> > > > > Advice please...I have access to a BP series II machine with the
> x,y,
> > > > > and z axis all driven by hydraulic motors. The motors are
> controlled
> > > > > by a device I am not familiar with but strikes me as being like a
> > > > > digitizers with a probe. Push the probe in certain directions
> drives
> > > > > the x/y table and the z axis. All axes have ball screws and nuts.
> > > > > Since this machine is a reasonable buy, would it make a device to
> > > > > retrofit for CNC?? The hydraulic motors are about the same size and
> > > > > position as servo's driven BP mills I have seen. The motors appear
> > > > > to be driving a pulley/belt rather than direct drive. The z axis is
> > > > > the knee of the machine and not the head. I wounder if servo's
> would
> > > > > be powerful enough to move the knee up and down (I don't believe
> that
> > > > > the knee has a counter weight system) In place of the machine head
> > > > > is a long slotted plate for mounting multiple machine heads. The
> > > > > hydraulic controller is also mounted to this plate. Any advice
> would
> > > > > be appreciated. Thanx...Richard in Michigan.
> > > > >
> > > > >
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