Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions 1:1 ratio
Posted by
R Rogers
on 2005-01-29 16:02:14 UTC
The motors on my Series 1 are 40.5 in-lb and they work out to 2 hp each at 13.7 amps. They are really too big for X and Y but just right for the knee. Usually X and Y servos are 28 in-lb. Just a rough idea of what is normally used. Ron
braidmeister <braidmeister@...> wrote:
Yeah...more like $110 or so each on Ebay with discontinued new old
stock encoders. I don't really like the Ameteks for the BP
conversion. There is little data on them (some people use them as
windmill generators with mixed results)...and I bet that I have 2
similar ones in my BP tape drive, but they are NEMA 23 size. I think
that they are just too small for this machine to get the kind of
performance that I want out of it.
I'm going to go w/ the 2HP ones that I mentioned. They need 15A and
that figure alone tells me that they have some umph to them. The
Ameteks look like they might be better suited on my Router or Plasma
rig where cutting force is much less than the BP. Plasma for
sure...router, maybe.
-Brady
--- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers
wrote:
about that price, they did anyway. 5/8" shaft, 40 volts DC and like
1200 RPM if I remember correctly. And I just learned today on here
those can be ran at higher voltage through the Gecko. Just put an
encoder on them. It would be worth a try. I know one guy was selling
a 2 axis retrofit package for series1 BP's and that was the motors he
offered. They sell them all the time on Ebay with encoders for like
$100 ea.
it if you have trouble.
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braidmeister <braidmeister@...> wrote:
Yeah...more like $110 or so each on Ebay with discontinued new old
stock encoders. I don't really like the Ameteks for the BP
conversion. There is little data on them (some people use them as
windmill generators with mixed results)...and I bet that I have 2
similar ones in my BP tape drive, but they are NEMA 23 size. I think
that they are just too small for this machine to get the kind of
performance that I want out of it.
I'm going to go w/ the 2HP ones that I mentioned. They need 15A and
that figure alone tells me that they have some umph to them. The
Ameteks look like they might be better suited on my Router or Plasma
rig where cutting force is much less than the BP. Plasma for
sure...router, maybe.
-Brady
--- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers
wrote:
> Three Ameteks would work probably. They are like $20 each if youlook hard enough. I think "Silicon salvage" has them on Ebay for
about that price, they did anyway. 5/8" shaft, 40 volts DC and like
1200 RPM if I remember correctly. And I just learned today on here
those can be ran at higher voltage through the Gecko. Just put an
encoder on them. It would be worth a try. I know one guy was selling
a 2 axis retrofit package for series1 BP's and that was the motors he
offered. They sell them all the time on Ebay with encoders for like
$100 ea.
>wrote:
> Ron
>
> braidmeister
>moves
>
> Ron,
> FYI, this is a BOSS machine. It was designed 100% for CNC with no
> other purpose ~ according to Bridgeport specs. It is not a manual
> mill converted to CNC.
>
> The knee is manual to accomodate variations in material height. The
> knee is not driven by the stepper. Only the quill/spindle shaft
> in Z ~ quite a big difference in mass to move. The Z motor movesjust
> as easily as the X & Y ones, by hand turning a small 2.5" pulleywith
> my fingers.do
>
> To those of you that are going to try moving the pulleys by hand,
> so with the controls/power OFF. 1st reason being that quickmovement
> can acutally turn the motor into a generator and smoke theyour
> driver...2nd and more importantly, a stepper has max holding torque
> at zero RPM...once you break the magnetic lock on the motor and
> fingers are in there...It WILL BITE YOU!!! Don't ask how I know!1st,
> (Actually I knew this before hand in theory...but forgot) :)
>
> -Brady
>
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers
> wrote:
> >
> >
> > braidmeister
> wrote:
> >
> >
> > Ron,
> > I get what you are saying about 4th gear. I will try them 1:1
> > and if need be, I will reduce to a 2:1 or better ratio. No sensein
> > spending the $ for pulleys and belts if it is not necessary.am
> >
> > In all actuality, yes it is a 3100 RPM servo @ 130 vdc. Since I
> > planning on running them @ 75v max, then I will have a max RPM ofmove
> > only about 1700. That brings the rapids down quite a bit. I doubt
> > that I will need the full 2HP of the motor since I can easily
> > the axes by hand turning the pulley.crank
> >
> > /// We discussed the power input at the screw just recently. A
> handcrank has about a 6" diameter path of travel, 3" radius. A
> revolved 1 rev constitutes about 18.84 " of circular travel. Thisof
> circular distance produces .200" inches of linear table travel (5
> tpi). Or 94.2:1 ratio. Each pound of force presented to the handle
> the crank equals 94.2 lbs of linear force. 10 lbs , roughly 1/2ton.
> So, servo torque is really not that big of an issue. The littlematerial...Z
> Ameteks will work for X and Y. Except in the case of Z driving the
> knee. Different situation altogether. About 800lbs going up, coming
> down is no problem. And then add a large bit hogging out
> is the biggest headache by far. Put the biggest motor you can powerwill
> on it. I only get 50 ipm out of Z with a 40 in-lb motor. ///
> >
> > bounce things back and forth on...to me it is 100% American ~
> Better,
> > cheaper, faster
> >
> > /// As I told an engineer recently about those attributes, pick
> two, ya can't have all three.///Ron
> >
> > & elimination of the middleman for those of us who
> > know how to turn a wrench.
> >
> > -Brady
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers
> > wrote:
> > >
> > >
> > > braidmeister
> > wrote:
> > >
> > >
> > > No I was the one throwing planes!!
> > >
> > > Yes, that's the motor in question. It seems to me that it would
> be
> > an
> > > ideal fit for the BP. I am hoping that I can get away with 1:1
> and
> > a
> > > decent encoder.
> > >
> > > /// Trying to run a 3100 rpm servo 1:1 to a 5 tpi ballscrew
> > produce rapids of 620 ipm. One needs from 2:1 to 3:1 reduction onX
> all
> > 3 axies using servos (driving the knee, its half the increment of
> > and Y per rev.). Simply increasing encoder count to attainrated
> resolution
> > is not practical. An E5S-200 encoder, Gecko 320's and Mach2 work
> > perfectly together using the above ratios. 1:1 ratio is like
> driving
> > a car around in 4th gear. Servos operate best at 80% of their
> > RPM. I just ordered a set of pullies from mcmaster carr three L1.4"
> (.375
> > pitch)series 30 tooth (3.5" dia) and three L series 12 tooth (
> > dia) for a 2.5:1 setup/// Ron[Moderators]
> > >
> > >
> > >
> > > [Non-text portions of this message have been removed]
> >
> >
> >
> >
> >
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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........
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[Non-text portions of this message have been removed]
Discussion Thread
braidmeister
2005-01-28 12:40:56 UTC
Bridgeport retrofit servo questions
Les Newell
2005-01-28 15:41:29 UTC
Re: [CAD_CAM_EDM_DRO] Bridgeport retrofit servo questions
braidmeister
2005-01-28 15:59:12 UTC
Re: Bridgeport retrofit servo questions
Les Newell
2005-01-28 18:35:07 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
braidmeister
2005-01-28 19:09:59 UTC
Re: Bridgeport retrofit servo questions
Mariss Freimanis
2005-01-28 19:57:03 UTC
Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-28 20:17:01 UTC
Re: Bridgeport retrofit servo questions
braidmeister
2005-01-28 21:04:47 UTC
Re: Bridgeport retrofit servo questions
Mariss Freimanis
2005-01-28 22:47:54 UTC
Re: Bridgeport retrofit servo questions
Les Newell
2005-01-29 02:54:57 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
Les Newell
2005-01-29 03:42:06 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
Les Newell
2005-01-29 03:49:09 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
AbbyKatt
2005-01-29 04:59:52 UTC
Max voltage for a stepper motor?
washcomp
2005-01-29 06:18:26 UTC
Re: Bridgeport retrofit servo questions
turbulatordude
2005-01-29 07:23:32 UTC
Re: Max voltage for a stepper motor?
braidmeister
2005-01-29 08:23:15 UTC
Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 08:44:59 UTC
Re: Bridgeport retrofit servo questions
Fred Smith
2005-01-29 08:55:24 UTC
Re: Bridgeport retrofit servo questions
Luke1027
2005-01-29 10:30:01 UTC
Re: [CAD_CAM_EDM_DRO] Bridgeport retrofit servo questions
Luke1027
2005-01-29 10:32:30 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 10:55:30 UTC
Re: Bridgeport retrofit servo questions
Les Newell
2005-01-29 11:03:21 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 11:10:37 UTC
Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 11:14:10 UTC
Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 11:17:35 UTC
Re: Bridgeport retrofit servo questions
Luke1027
2005-01-29 11:22:52 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 11:27:02 UTC
Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 11:33:38 UTC
Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 11:39:04 UTC
Re: Bridgeport retrofit servo questions
washcomp
2005-01-29 11:47:14 UTC
Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 11:48:20 UTC
Re: Bridgeport retrofit servo questions
Luke1027
2005-01-29 11:54:05 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 11:55:42 UTC
Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 11:57:29 UTC
Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 12:01:44 UTC
Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 12:01:46 UTC
Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 12:06:34 UTC
Re: Bridgeport retrofit servo questions
Luke1027
2005-01-29 12:08:49 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 12:11:35 UTC
Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 12:16:04 UTC
Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 12:17:27 UTC
Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 12:33:35 UTC
Re: Bridgeport retrofit servo questions
Luke1027
2005-01-29 12:50:33 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 12:52:13 UTC
Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 12:54:59 UTC
Re: Bridgeport retrofit servo questions
Les Newell
2005-01-29 13:16:21 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
Les Newell
2005-01-29 13:17:14 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
Les Newell
2005-01-29 13:25:03 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
R Rogers
2005-01-29 13:27:44 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions 1:1 ratio
braidmeister
2005-01-29 13:44:26 UTC
Re: Bridgeport retrofit servo questions 1:1 ratio
R Rogers
2005-01-29 14:24:38 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions 1:1 ratio
braidmeister
2005-01-29 14:45:15 UTC
Re: Bridgeport retrofit servo questions 1:1 ratio
Dan Mauch
2005-01-29 14:53:48 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
R Rogers
2005-01-29 15:03:23 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions 1:1 ratio
braidmeister
2005-01-29 15:16:26 UTC
Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 15:16:41 UTC
Re: Bridgeport retrofit servo questions 1:1 ratio
braidmeister
2005-01-29 15:43:11 UTC
Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 15:43:14 UTC
Re: Bridgeport retrofit servo questions
R Rogers
2005-01-29 16:02:14 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions 1:1 ratio
braidmeister
2005-01-29 16:03:38 UTC
Re: Bridgeport retrofit servo questions
R Rogers
2005-01-29 16:12:14 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 16:28:32 UTC
Re: Bridgeport retrofit servo questions 1:1 ratio
cnc_4_me
2005-01-29 16:37:44 UTC
Re: Bridgeport retrofit servo questions
Luke1027
2005-01-29 16:58:42 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
braidmeister
2005-01-29 17:19:43 UTC
Re: Bridgeport retrofit servo questions
Luke1027
2005-01-29 17:38:01 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
R Rogers
2005-01-29 18:37:22 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions 1:1 ratio
braidmeister
2005-01-29 18:45:12 UTC
Re: Bridgeport retrofit servo questions
cnc_4_me
2005-01-29 19:31:14 UTC
Re: Bridgeport retrofit servo questions 1:1 ratio
R Rogers
2005-01-29 20:11:41 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions 1:1 ratio
cnc_4_me
2005-01-29 20:18:25 UTC
Re: Bridgeport retrofit servo questions 1:1 ratio
R Rogers
2005-01-29 20:42:49 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions 1:1 ratio
R Rogers
2005-01-29 20:47:01 UTC
CNC wiring PDF updated
cnc_4_me
2005-01-29 21:53:21 UTC
Re: CNC wiring PDF updated
Les Newell
2005-01-30 01:27:17 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
Polaraligned
2005-01-30 06:52:44 UTC
Re: CNC wiring PDF updated
Robert Campbell
2005-01-30 07:14:22 UTC
Re: [CAD_CAM_EDM_DRO] CNC wiring PDF updated
R Rogers
2005-01-30 08:27:45 UTC
Re: [CAD_CAM_EDM_DRO] Re: CNC wiring PDF updated
Dan Mauch
2005-01-30 09:48:22 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
Luke1027
2005-01-30 10:36:30 UTC
Re: [CAD_CAM_EDM_DRO] Re: CNC wiring PDF updated
braidmeister
2005-01-30 12:09:41 UTC
Re: CNC wiring PDF updated
John Stevenson
2005-01-30 15:22:13 UTC
Re: CNC wiring PDF updated
R Rogers
2005-01-30 16:41:50 UTC
Re: [CAD_CAM_EDM_DRO] Re: CNC wiring PDF updated
Jon Elson
2005-01-30 17:00:45 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
Stephen Wille Padnos
2005-01-30 18:50:15 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
braidmeister
2005-01-30 19:18:25 UTC
Re: Bridgeport retrofit servo questions
Dan Mauch
2005-01-31 09:29:32 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
Jon Elson
2005-01-31 10:17:20 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
Stephen Wille Padnos
2005-01-31 10:23:13 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
John Rouche
2005-01-31 10:36:10 UTC
Re: Bridgeport retrofit servo questions
Jon Elson
2005-01-31 23:01:09 UTC
Re: [CAD_CAM_EDM_DRO] Re: Bridgeport retrofit servo questions
m0nkey0ne
2005-02-02 14:23:04 UTC
Re: Bridgeport retrofit servo questions