CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Clamping Fixture

Posted by Jon Elson
on 2007-03-07 09:44:50 UTC
Victor A. Estes wrote:

>Hi, has anyone built a vacuum table for a CNC mill? I need to clamp some aluminum plates (2 1/2" wide x 3 1/2" long x 1/2" and 1/4" thick) flat to the milling table so that I can surface the top of the plates. This is not a one time operation, but rather something that I will need to do all of the time. I was thinking that a vacuum table might do the trick, what do you think? Any suggestions. This will need to fit a Sherline metric CNC mill. I figure I can scale something up or down to fit.
>
>
>
Assuming a rectangle, that is 8.75 in squared, and the holding power of
a hard vacuum will be
127 Lbs. That may work for light milling, but it is a bit iffy. If the
vacuum is much weaker
than 28 In Hg, I don't think it has a chance of working. Why not just
put it in a vise with
parallels under the object? That's what I do. No way is the piece
going to fly off the vise
jaws. If you use a flycutter with your vacuum table, there is a good
possibility it could fling
a full pound "bullet" at you!

Jon

Discussion Thread

Victor A. Estes 2007-03-07 08:54:35 UTC Clamping Fixture Jon Elson 2007-03-07 09:44:50 UTC Re: [CAD_CAM_EDM_DRO] Clamping Fixture Victor A. Estes 2007-03-07 11:06:19 UTC Re: [CAD_CAM_EDM_DRO] Clamping Fixture ballendo 2007-03-07 15:06:59 UTC Re: Clamping Fixture ballendo 2007-03-07 15:16:35 UTC Re: Clamping Fixture Rexarino 2007-03-07 15:46:17 UTC Re: [CAD_CAM_EDM_DRO] Clamping Fixture David A. Frantz 2007-03-07 18:00:43 UTC Re: [DIY-CNC] Clamping Fixture Victor A. Estes 2007-03-07 19:06:56 UTC Re: [CAD_CAM_EDM_DRO] Clamping Fixture Tom Hubin 2007-03-07 22:32:02 UTC Re: [CAD_CAM_EDM_DRO] Clamping Fixture John Dammeyer 2007-03-07 23:02:02 UTC RE: [CAD_CAM_EDM_DRO] Clamping Fixture Fred Smith 2007-03-08 05:50:59 UTC Re: Clamping Fixture Victor A. Estes 2007-03-08 06:33:04 UTC Re: [CAD_CAM_EDM_DRO] Re: Clamping Fixture Victor A. Estes 2007-03-08 06:54:32 UTC Re: [CAD_CAM_EDM_DRO] Clamping Fixture Tom Hubin 2007-03-08 12:40:55 UTC Re: [CAD_CAM_EDM_DRO] Clamping Fixture Victor A. Estes 2007-03-08 14:54:43 UTC Re: [CAD_CAM_EDM_DRO] Clamping Fixture