Re: Semiautomatic PCB Drilling Machine Update

These were $50K machines back then. Lots of precision.
--
Phil Mattison
http://www.ohmikron.com/
Motors::Drivers::Controllers::Software

----- Original Message -----
From: Graham Stabler <grezmos@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, October 31, 2007 10:36 AM
Subject: [CAD_CAM_EDM_DRO] Re: Semiautomatic PCB Drilling Machine Update


> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Yahoo" <yahoo@...> wrote:
> >
> > The machine will store the delta between the drill and camera
> >cross-hair, and move into position for each drilling cycle, then
> >return the the view position.
>
> We all have bad days and this was one of mine, why did I think you
> needed to see the drill bit!!!! all you need is an accurate offset and
> that is very easy to do.
>
> > I got the idea from the Kulicke & Soffa wire bonding machines I
> >maintained at my job in 1979-80. For each silicon die the operator
> >would target a pair of bonding pads at opposite corners of the die,
> >and the machine would automatically calculate the relative positions
> >of all the other pads, taking into account rotation.
>
> I've been giving a lot of thought to wire bonding machines recently,
> for the production of super small dead bug style radio receivers (sub
> half gram). This technique could work really well for that.
>
> Graham
>