Re: [CAD_CAM_EDM_DRO] welding linear shafts

May I add my 2c worth on this matter
Over the years that I have been on the trade many times I have to drill and tap thru
case harden material, it is easy , just go below the hardened skin with a drill bigger
than the size of the bolt that you are going to use then use a normal drill and tap,
if I m going to make this lathe I will drill and tap the linear bars ( now I remember
that I have seen linear shaft that come already tapped) ,and then I will drill the support
tees clearance size on that bolt also I will drill the square tube that is the machine
bed right thru with a hole pattern that matches the hole pattern of the linear shaft
but with a hole on the bottom bigger to allow for a extension allen key to pass thru
to allow the bolts to be tighten.
hope that this is of help to same one
mariano


JanRwl@... wrote:

> In a message dated 29-Nov-00 18:02:23 Central Standard Time,
> jmelson@... writes:
>
> >
> > Yup, you're right, this would be a horrible problem to solve. The real
> > linear bearing
> > shafts are centerless ground, and are extremely straight and consistently
> > round
> > and to correct diameter. I can't imagine how you would keep them in that
> > shape
> > after a welding process. Right around the weld regions, they'd be
> > distorted, and
> > trying to straighten them would put all sorts of little bumps and ripples
> > around
> > the welds. Why don't YOU drill the holes? You could use solid carbide
> > drills,
> > or maybe even do a little heat treating right at the location of the hole
> > to anneal
> > the rod.
> >
> > Jon
> >
> >
> >
>
> 100% CORRECT!
>
> [Non-text portions of this message have been removed]
>
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