Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Posted by
Jon Elson
on 2000-12-01 15:03:13 UTC
Greg Nuspel wrote:
the cable, nonlinearities in the wrap of cable on the drum, etc.) will
read true position, but the motor will have to rapidly jump from one end
of the considerable backlash to the other, causing a big bump every
time it gets to the other side. It will just bash back and forth .050"
all the time, knocking the quill up and down a few thousandths and then
reversing. This kind of mechanism will be a terrible pain to make work
at all.
Jon
> What if you used a servo motor on the fine feed wheel input, but ran a cableYes, you still have backlash! The encoder (discounting vibration of
> to a clamp on the quill. This cable then runs over a drum attached to an
> encoder. Now you have no backlash in your system.
the cable, nonlinearities in the wrap of cable on the drum, etc.) will
read true position, but the motor will have to rapidly jump from one end
of the considerable backlash to the other, causing a big bump every
time it gets to the other side. It will just bash back and forth .050"
all the time, knocking the quill up and down a few thousandths and then
reversing. This kind of mechanism will be a terrible pain to make work
at all.
Jon
Discussion Thread
Jon Anderson
2000-11-30 17:09:26 UTC
Looking for short ballscrew
Hugh Currin
2000-12-01 08:11:24 UTC
Re: Looking for short ballscrew
Wally K
2000-12-01 08:46:02 UTC
Re: Looking for short ballscrew for Z axis
Jon Anderson
2000-12-01 09:11:35 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Jon Anderson
2000-12-01 09:14:59 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew for Z axis
ptengin@a...
2000-12-01 09:40:51 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Jon Anderson
2000-12-01 09:58:34 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Smoke
2000-12-01 10:17:19 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
William Scalione
2000-12-01 10:26:08 UTC
Re: Looking for short ballscrew
Jon Anderson
2000-12-01 10:36:22 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Jon Anderson
2000-12-01 10:42:41 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Smoke
2000-12-01 11:06:17 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
PMeinhard@a...
2000-12-01 11:49:09 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Jon Elson
2000-12-01 12:02:51 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Greg Nuspel
2000-12-01 12:08:35 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Jon Anderson
2000-12-01 13:30:14 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Smoke
2000-12-01 13:34:58 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Greg Nuspel
2000-12-01 14:00:54 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Smoke
2000-12-01 14:43:40 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Jon Elson
2000-12-01 15:03:13 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Greg Nuspel
2000-12-01 16:05:09 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Jon Anderson
2000-12-01 16:39:05 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Jon Elson
2000-12-01 22:58:13 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Jon Elson
2000-12-01 23:18:35 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
dave engvall
2000-12-03 22:37:07 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Smoke
2000-12-03 23:01:39 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Carey L. Culpepper
2000-12-05 09:25:27 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
ptengin@a...
2000-12-05 10:54:15 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Carey L. Culpepper
2000-12-05 11:11:52 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Jon Elson
2000-12-05 11:44:24 UTC
Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew
Bill Griffin
2000-12-05 22:31:15 UTC
Re: Re: Looking for short ballscrew
ptengin@a...
2000-12-06 00:45:04 UTC
Re: [CAD_CAM_EDM_DRO] Re: Re: Looking for short ballscrew