Re: LPKF 2d drill

Hi Karen,

Thanks for the comments. I'd like to see a Sherline version, if you
know of a pix. Or LPKF pix!

Alan KM6VV


Karen Winters wrote:

>
> It can float over the pcb using a pressure foot, which
> rides on top of the board in the lpkf models. Any
> variations in the height of the board results in the
> spindle assembly being raised as well, compensating
> for differences in height. The reason I need variable
> control was so I could adjust how much force the
> pressure foot exerted and slow down or speed up the
> drilling cycle. The sequences I use are programmed
> into a parallel word eeprom, which can be adjusted in
> timing by word multiplication or timing frequency
> multiplication. The floating head can, in fact, be
> built for a sherline machine. I've had similar
> questions. The head works best with a low mass spindle
> assembly or a counter-balanced spindle assembly. I'll
> have to look up the 5 phase sequences for you. They're
> around here somewhere. Let me know if you have any
> other questions. Thanks ;)
>
> --- Alan Marconett KM6VV <KM6VV@...> wrote:
> > Hi Karen,
> >
> > Yes, LPKF makes some interesting equipment! What
> > I'm after, is the
> > stepping sequence for a 5-phase motor. Can you
> > supply a URL to this
> > data, or would you be willing to describe sequence?
> >
> > I believe that LPKF Z axis can "float" over a PCB,
> > is this true? I'd
> > like to see if something like that is adaptable to
> > the Sherline mill.
> >
> > I and I'm sure others would like to hear more about
> > your conversion
> > program!
> >
> > Your solenoid control is novel!
> >
> > Thanks,
> >
> > Alan KM6VV