Re: [CAD_CAM_EDM_DRO] cnc tapping options for making cnc tooling table

Hi Rick

Pick up a used reversing tapmatic tapping head. probably get a nice one
good for 1/4 for less than 100 bucks. They work great on a cnc and you
don't need to reverse your spindle. You could probably tap all 420 holes
in about an hour with one tap.

Bob

----- Original Message -----
From: "skykotech" <rick@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Friday, September 03, 2004 12:26 PM
Subject: [CAD_CAM_EDM_DRO] cnc tapping options for making cnc tooling table


> I want to make a tooling table for my cnc mill, and possibly another
> table for a medium gantry mill I am building. I haven't exactly
> decided how large the table will be or what size holes it will have,
> but something along the lines of 16" x 32" x 1" with 420 tapped holes
> would probably be the largest. Now, I am not going to hand tap 420
> holes, so I need an option for a cnc tapper.
>
> Option 1: Procunier tapping head - fast but expensive ($500+ new)
>
> Option 2: Threadmilling - slow, but possibly much cheaper
>
> I am using EMC and can do full three axis moves, but I don't have
> computer control over the spindle speed, position or direction. All
> of this is making me lean toward threadmilling, perhaps 1/4" 20TPI
> holes using a single point right hand tool like the Micro 100 1801000
> which has a min. hole dia. of .180", a projection of 0.040", a shank
> of 0.25" and a depth of 1.0". I have no clue if this would be the
> right tool for threadmilling holes in an aluminum cnc tooling table,
> but it is pretty cheap, solid carbide for $22.
>
> Opinions?
>
> Thanks,
>
> Rick
>
>
>
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