On 2010-08-16, Pete C. wrote:

"Pete C." wrote:

Ignoramus28874 wrote:

On 2010-08-16, David Billington wrote:
Ignoramus28874 wrote:
This is actually a practical application, as someone said he may want
me to do a parts run for him.

Let's say that out of a flat stock, I want to cut out a part and it
needs to be beveled on all sides.

I obviously cannot do it in one "start and forget" application, as at
some point the part would need to be clamped from top or something, to
avoid burs or unmachined edges.

Someone must have already invented a good scheme for doing so, any
ideas?

i

Maybe have a look here http://www.miteebite.com/ at some of the T slot
products . Can't give a direct URL as the site doesn't do that
annoyingly. Maybe the Advant-edge clamp system.

Now that I thought some more about it, it is not as difficult. All I
need it to stop the program, and use a Vise-Grip to clamp the part
down to the backing, and then continue to cut it off.

i

Vice-Grips are not intended as machining clamps. Try the clamp bars in
the holdown kit, they are intended for the use and will give you high
clamping pressures when used properly.

BTW, have you been reading the Machining Fundamentals book? It explains
various work holding scenarios including the clamp bars.

I have been reading it, but not about clamps.

i