Re: safety rule

Hi Andrew,

I think everybody monitors the first part with complete attention,
then evaluates the requirements.

I have a part that has lots of 1/16" holes in 6061 aluminum and the
drill cloggs and stops penetrating, or the drill bushing locks it in
place. breaking a 1/16 drill is not a problem, but if the drill is
into the part and also the bushing, it can be a mess.

While it is running, I am in the shop doing other things. next week
I'll be running a network cable to the 2nd puter in the shop, but
mostly I'm checking a part, cleaning it, deburring it.

or I am drafting other parts or working on a circuit schematic or
something. Currently that is a broken drill detector circuit. Both
a swing arm for contact verification and a motor amp monitoring
circuit.

Once I run 10 parts (that take 20 minutes each), with no human
intervention, I will feel comfortable enough to go outside and mow
the grass, which, by then, it will need. and THAT is a project
thousands of us dream about being done unattended !

Dave









--- In CAD_CAM_EDM_DRO@yahoogroups.com, "andrewyslee"
<andrewlee@s...> wrote:

> Hi all,
>
> This list must have hundreds of 1000's hours with automated (CNC)
> machines so would be a good place to ask this question (poll).
>
> One of the safety rule says that one should never leave an

automated

> machine running unattended. But this would negate one of the

greatest

> advantage of automated machines, and I am sure that (unattended) is
> often done.
>
> Just like to find out how list members had fare when they did

(leave

> cnc machine running unattended).
>
> a. done that numerous times, everything fine
> b. done that, and had a very bad experience. The .........
> c. Heard that this happened to someone when he/she (any she on this
> list?) left the _____ machine running unattended. The .......
> d. rules are made to be adhered to strictly
> e. rules are made to be broken
> etc. etc.
>
> Andrew