RE: [CAD_CAM_EDM_DRO] Press brake auto back stops - DRO / Accuracy

one thought though is on pressbrakes, you do not want
long blades to go through anywhere as things can get
knocked around a bit.... next time you're in fab
shop, take a peek at the front of most brakes and
they'll be quite scuffed from odd pieces coming up,
fuel tanks, etc that get pressed and "bumped" into the
rams, etc... some kind of limit switch or stroke
switch that after the ram goes through it's first
cycle, signals motor to roll to the next stop (tab?)
but only after the stroke is complete.. may want to be
able to delay it further or adjustable as you wouldn't
want the backstop coming forward to a shorter stop /
lip / bend too fast either. Prob after limit switch
would be activated by ram going to home up position?
Darren Lucke

--- John Dammeyer <johnd@...> wrote:

> Hi Darin,
>
> Not quite ready to ship yet. But in a way that's a
> good thing. Now I have
> yet another project to ponder on.
>
> We initially discussed the idea of tab stops with
> each press of the go
> button so turning or threading would go to the next
> tab stop. One could
> program in the stops for a spindle and then turn
> each of the shoulders and
> thread the appropriate bits without resetting things
> each time. Useful
> perhaps for making multiples like axles for trains
> or robots etc. That's
> when the ELS is used for a lathe.
>
> There is a limit switch input. And of course
> there's the input for the
> spindle RPM. So I guess we could configure the
> limits to protect the
> leadscrew motion the way it's intended. But the
> spindle input is normally a
> slotted optical sensor. A long blade that follows
> the bender could prevent
> motion of the backstop while the opto is covered.
> Each time the cycle
> occurs the ELS could step through the tab stop list
> and move the motor to
> the next position.
>
> I'll give it some thought.
>
> John Dammeyer
>
>
> > DRO / Accuracy
> >
> >
> > Where do I send the money for one? I would rather
> > have the driver on-board w/ the ELS I think (save
> the
> > 100 bucks ~altho those geckos are the greatest
> thing
> > since sliced bread~?).
> >
> > What about a switch interface when first bend is
> > completed to adjust to the next length? Possible?
>
> > Sometimes one would not be able to punch a go
> button
> > if you had a larger piece safely?
> > Darren Lucke
> >
> > --- John Dammeyer <johnd@...> wrote:
> >
> > > Hi Darin,
> > >
> > > There's not that much 'electronic' knowledge
> > > required. You'll end up
> > > needing to build a power supply just like what's
> > > needed for CNC but just a
> > > single axis. The ELS will have a driver built
> in
> > > but a GECKO driven from
> > > the ELS (or Paul Kelly's module) would work too.
> > >
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES:
> http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe:
> CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe:
> CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com,
> wanliker@..., timg@...
> Moderator: pentam@... indigo_red@...
> davemucha@... [Moderators]
> URL to this group:
> http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru
> Google.com to reach it if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I
> consider this to be a sister site to the CCED group,
> as many of the same members are there, for OT
> subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC
> DOMAIN BY POSTING THEM. DON'T POST IF YOU CAN NOT
> ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
>
>
> CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>
>
>
>
>
>

__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com