Re: Another router video..

I agree with what you say. Someone's demand to explain how you do
something is not your command and obligation just because you're
asked. You are the one giving as you chose; the one asking is just
that, asking. What's he giving in return?

Everyone gets excited by high-speed anything; it's not a big deal.
Today I was running experimental PID closed-loop steppers from the
G100. Call them 50-pole AC servomotors now with the loop closed.:-)

The motor is on a 24" linear stage (1 TPI screw). The speed was 50"
per second (3,000 IPM at 3,000 RPM) while operating closed-loop. The
motor is NEMA-23, 3A/phase, 24VDC supply and a G201 drive. Not
pushing the motor hard at all.

It is kind of fun to move 24" out and back in less than a second. If
I have the time and people want to see it, I'll take and post a
video. 3,000 IPM steppers.

Mariss



--- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers <rogersmach@...>
wrote:

>
> B,
>
> I thought it would be nice to share some of the successes I've

had with others on the group(s). Mostly all I think have enjoyed
them. A few seem to have a problem with it. It was not my intent to
start a flame with anyone, I apologize for that. It was to show what
can be done with whats available to us hobbyists. If you're "Wow'd"
by it great. Personally, I'm wow'd by it. It's nice to show activity
to go along with words occasionally. If I had gotten on here and
said "Hey guess what, my router has 1800 ipm rapids" Do you think a
few would want me to prove it? I do, thats why I posted a video.

>
> Getting back to the close up of the engraving. I'm as close as I

wish to get with my digital camera around a cutter I could in no way
outrun. I'll see what I can do though.

>
> In the past, it's been almost demanded that I disclose fully,

every feature of it's construction. That would be like me suggesting
that every vendor on the groups disclose all of their contacts and
sources for items they provide to hobbyists. And while there at it
post all their wiring diagrams and PCB files for their boards,
including source codes for firmware. And when they resist, insinuate
they aren't in this for the good of the hobby. Would that be fair?
Everyone has a right to privacy and intellectual property to a
certain degree..

>
> I will say this, the good news, it's an low-cost machine to build

which means the retail price will be low. The bad news, it's not an
easy machine to build.

>
> The good thing about showing and not explaining is: It makes

folks think, it's great all the new ideas that have cropped up. Puts
the speculation outside the "box", thats good for all of us, and the
hobby.

>
> Thanks for your input, Ron
>
>
> ballendo <ballendo@...> wrote:
> Ron,
>
> I've spent some time in front of fast machines. Even the early 80's
> Cincy I retrofit last year could do 400IPM...
>
> I've operated 1100IPM machining centers.
> Also others--not machining centers-- at even faster rates. (sail
> plotters for example)
>
> your project Seems a nice machine. (What you've let us see, at
> least.)
>
> But high speed cnc operation is NOT new to me.
>
> So I'm asking specific questions about what I'm looking at...
>
> I'm NOT asking about corner rounding...
>
> I DO understand the effects of higher acceleration...
>
> I'm asking to SEE a close up of the CUT at these various rates
> you're showing.
>
> I've already asked about:
> linear guide type?
> steppers vs. servo's?
> Ballscrew, rack/pinion other?
>
> If the only purpose of showing us this is to WOW us, then okay.
>
> Wow.
>
> Care to give any answers to the questions asked?
>
> Ballendo
>
> P.S. I HAVE described my wood ducks and roadrunners in great

detail.

> I have chosen not to share pictures yet. When I do, there will be

no

> closeups only and blue tape.
>
> (But of course my machines have absolutely NOTHING to do
> with asking you questions about what you've decidesd to show us.)
> The machines are quite obviously designed for different market
> segments. I'm not planning 1800IPM wood ducks...
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers
> wrote:
> >
> > On my computer(s) its very plain to see there is no corner
> rounding. You might try increasing video resolution. Or right click
> your vid player and choose full screen. The key as I said earlier

is

> acceleration. The heck of it is, that was the first cycle of that
> routine. It would do it even faster. I've proven the speed is there
> and much more importantly, speed with relative precision.
> Acceleration is the key to fast direction changes and keeping X and
> Y in time with one another. I've moved on to other areas of design
> and testing.
> >
> > I'll post a video of it hole drilling later
> >
> > Thanks for your comments, Ron
> >
> >
> >
> > ballendo wrote:
> > >In CCED, R Rogers wrote:
> > >250 ipm programmed speed, 100% feedrate. Speed is not as

critical

> > >as acceleration. Cut quality is great. No corner rounding.
> > >You should post some video of the woodduck...
> > >Yeah, thats one reason for the blue tape. Way wipers have yet to
> be
> > >designed. They will be.
> > >Thanks, Ron
> >
> > Ron,
> >
> > Thank you for the numbers, suggestion and explanation. Still

would

> > like to see a closeup of the actual cut (just zoomed in at the
> end).
> >
> > Ballendo
> >
> >
> > >
> > >
> > > ballendo wrote:
> > > Ron,
> > >
> > > Nice video. What is the programmed speed?
> > >
> > > Can we see a close up of the finished engraving, to see cut
> > quality
> > > at this speed?
> > >
> > > Ballendo
> > >
> > > P.S. Do we have to use blue painter's tape to keep swarf off

the

> > > ways?
> > >
> > > --- In CAD_CAM_EDM_DRO@yahoogroups.com, "rogersmach"
> > > wrote:
> > > >
> > > > Hey Everyone,
> > > >
> > > > Playing with the new router again..
> > > >
> > > > Engraving text
> > > >
> > > > http://www.wikiupload.com/download_page.php?id=4581
> > > >
> > > > Ron
> > > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Addresses:
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> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
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> reach it if you have trouble.
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this to
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> 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
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> Addresses:
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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
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