W.E.T>Re: [CAD_CAM_EDM_DRO] Seig X1 / X2 table extension

Hi Sebastien and all:
Don't be upset with the company selling the one-half inch studs.
It is standard practice to list the tee nut by the diameter of the
thread it uses. Also, since the tee slots vary a lot from machine to
machine be sure and measure the size of the slots in your machine and
then tell the people at Little Machine Shop the size of the tee slot,
the machine it is in and the size of stud you want to use. On the
larger machines you can get tee nuts of different stud sizes to fit
the same tee slot. The sizes available is handy info when building
your own machine so you don't have to make all the tee nuts and
studs. Ahh. I just remembered that threaded rod works good when you
can't find standard studs.
Also, on the longer table design it is often made with a series
of threaded bolt holes in lines at even spacing. Then, half way in
both directions between the rows you can put in a dowel hole for
location. This way the dowel holes do the location and stay accurate
while the threaded hole can become loose from a lot of use.
0 0 0 0 Bolts
o o o Dowels
0 0 0 0 Bolts

I hope this makes it clear and helps.
GOD'S BLESSINGS
Bill



I think they are called tooling plates or fixture plates, but I'm not certain.
That's what they are called in
http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/msearch?query=%22tooling+plate%22&submit=Search&charset=UTF-8

People sell them. Check out:

http://www.cartertools.com/dcnctb.html

http://www.a2zcnc.com/products.asp
http://www.hightechsystemsllc.com/
http://search.ebay.com/search/search.dll?from=R40&satitle=tooling+plate

I want to make something similar with my taig mill. But I can't, because I
don't have a decent clamping kit for it yet. I bought a kit from busybee,
and then found out the 1/2" on the package referred to the width of the
studs, not the width of the t-slot nuts. I am annoyed.

I'll probably get a clamping kit from these guys.
http://www.littlemachineshop.com/products/product_view.php?ProductID=1268

-Sebastien Bailard

On Monday 31 July 2006 16:08, Chris Horne wrote:
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "William Perun Sr"
>
> <wperun1@...> wrote:
> > Chris, thanks for the heads up. Ken, at KDN Tool, mentioned that I
> > could save the lost 2.7 inches by extending the table. <<
>
> Bill,
> I can't remember who it was to give them credit (please speak up if it
> was you !) but I read somwhere about adding an Aluminium or Steel
> plate to the top of the table, CNC drilling a grid of holes and then
> tapping them for use fixing down work. I don;t remember if they
> suggested running a flycutter over it?
>
> It seemed a good idea at the time as it should be possible to relocate
> jigs, fixtures etc. much more accuately than using the 'T' slots.
>
> By 'extending' this idea and extending the plate to cover the extra
> 'X' required... it would provide the proverbial two bird lunch !
>
> I will probably do this and add into the equation, some threaded,
> shouldered dowels to fit the holes, as they will provide a more
> accurate location than just bolts.
>
> The final addition to this addition would be a plastic tray fitted and
> sealed between the existing table and the new plate. This would make
> it easy to use coolant without it getting all over the ways as well as
> catching most of the chips when machining dry.
>
> I don't think a small amount of coolant would add significantly to the
> inertia of the table as it would tend to slop around.
>
> Chris
>
>
>
>
>