Re: Bridgeport retrofit servo questions
Posted by
braidmeister
on 2005-01-29 11:39:04 UTC
No...for a few reasons...and take with grain of salt because I am no
expert ~ learning here too!
1. the shaft size of the motors I mentioned is .625". The hole in
that encoder is only .25".
2. the shaft of the motor is 1" long. You need an encoder with a thru
hole option for the shaft to poke thru. You may also need an amp for
the encoder (as mentioned on US Digital) if the leads are longer than
2 meters (doubt it) when using an open encoder.
3. That encoder only gives you 200 lines per rev. If used on a BP
with 1:1 gearing, there may not be enough lines on the encoder to get
tight tolerance. If you increase the number of lines, the servo can
be more precisely governed. Now...just for an anaolgy, if you changed
the belt ratio to let's say 4:1, then the motor would have to turn 4
times for each turn of the screw (actually 20X/1" if using .2"
pitch)...therfore one turn of the pulley @ 1:1 might move the
axis .2" where a 4:1 would move it only .05". You can imagine how
much movement the motor would have between encoder lines if run
1:1...this is why Les suggested running a higher line encoder so that
the distance between the 2 lines is smaller ~ resulting in less slop.
Does that make any kind of sense? Again...don't take this as
gospel...I'm in the same class as you! (the one in the back throwing
paper airplanes)
-Brady
--- In CAD_CAM_EDM_DRO@yahoogroups.com, Luke1027 <luke1027@p...>
wrote:
expert ~ learning here too!
1. the shaft size of the motors I mentioned is .625". The hole in
that encoder is only .25".
2. the shaft of the motor is 1" long. You need an encoder with a thru
hole option for the shaft to poke thru. You may also need an amp for
the encoder (as mentioned on US Digital) if the leads are longer than
2 meters (doubt it) when using an open encoder.
3. That encoder only gives you 200 lines per rev. If used on a BP
with 1:1 gearing, there may not be enough lines on the encoder to get
tight tolerance. If you increase the number of lines, the servo can
be more precisely governed. Now...just for an anaolgy, if you changed
the belt ratio to let's say 4:1, then the motor would have to turn 4
times for each turn of the screw (actually 20X/1" if using .2"
pitch)...therfore one turn of the pulley @ 1:1 might move the
axis .2" where a 4:1 would move it only .05". You can imagine how
much movement the motor would have between encoder lines if run
1:1...this is why Les suggested running a higher line encoder so that
the distance between the 2 lines is smaller ~ resulting in less slop.
Does that make any kind of sense? Again...don't take this as
gospel...I'm in the same class as you! (the one in the back throwing
paper airplanes)
-Brady
--- In CAD_CAM_EDM_DRO@yahoogroups.com, Luke1027 <luke1027@p...>
wrote:
> Brady,UID=2005011818310844&catname=&qty=1&item=10-1834
>
> What about the encoders off this motor?
> Buy the motor, pull the encoder, and discard the motor....
> would it work?
> http://www.surpluscenter.com/item.asp?
> I am very limited on electronics ... but trying to learn fast toconvert
> my BP to servos.one
>
> Luke
>
> braidmeister wrote:
>
> >.... and it has a
> >long enough rear shaft to mount a number of encoders. Looks like
> >of the US Digital ones will work nicely. ...
> >
> >-Brady
> >
> >
> >
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