Re: [CAD_CAM_EDM_DRO] Pendant Design, was - Spindle Motor Control?

Chris,

All of my Multicam users use the puck.

I would like the function on a pendant.

Bob Campbell

----- Original Message -----
From: "CL" <datac@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, March 04, 2003 12:46 PM
Subject: Re: [CAD_CAM_EDM_DRO] Pendant Design, was - Spindle Motor Control?


> Robert Campbell wrote:
>
> >Dean,
> >
> >The one function that I would like to see is one that MultiCam has had
for a
> >long time.
> >
> >In their systems, (software and pendant) they have the ability to place a
> >puck under the router bit and by pressing a button on their pendant have
the
> >Z axis slowly lower until an electrical contact has been made between
the
> >end of the router bit and the top of the puck. The software then would do
a
> >G92 with an offset the thickness of the puck.
> >
> Oh Ya, I remember that..... But I worked with a lot of Plasics and non
> conductive stuff. :-( The other downfall was in order to really work
> great, it had to run extremely slow, AND, you didn't dare use long ramps
> for that as it smashed itself into the material before it stopped moving.
>
> Mostly, that is a controller issue rather than a Pendant issue. A
> controller just needs to allow an input to be "switched" by a "known
> Thickness Switch/Puck". THEN the controller software knows what to do
> with the point it switched at. The very best method is to let it run a
> little faster, design a switch that allows an "overrun" situation, then
> let the software back up and find it again. Similar to How Art uses a
> modified Dial indicator as a probe. That was a great Idea !
>
> The start of this is to make the "switch/Puck" device, Create the logic
> that when the contact is made, it backs up, disengages, then slowly
> re-aproaches finding the "real" location. Then we can do that much
> faster on some of those long stroker machines showing up out there.
>
> Our MultiCam "puck" laid in the box all its life. But, the concept can
> still be applied to work if someone grabs it by the horns and just does
> it. I'd bet Art could do that without thinking !
>
> CL
>
>
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