a while ago I described how I added a simple optical encoder wheel to
my lathe. Meanwhile, I eventually got it to work with G33 threading,
but it wasnt as straightforward as I would have believed, so I thought
I'd describe my experience.
My first attempt was to use the encoder component as
On Saturday 25 July 2009, Haberler Michael wrote:
a while ago I described how I added a simple optical encoder wheel to
my lathe. Meanwhile, I eventually got it to work with G33 threading,
but it wasnt as straightforward as I would have believed, so I thought
I'd describe my experience.
My first
my lathe was lacking a spindle index sensor and quadrature encoder, so
I built one as follows:
The code rings are printed on plain paper with an inkjet printer, and
laminated into a plastic pouch; then cut with a scissor and glued
to the spindle pulley (with some pressure so as to get a
2009/6/30 Haberler Michael mai...@mah.priv.at:
The code rings are printed on plain paper with an inkjet printer, and
laminated into a plastic pouch
Interesting. When I tried a similar approach using clear tape I found
that the reflectivity of the tape in the frequency range of the
detectors
On Tue, 30 Jun 2009 16:09:45 +0100, you wrote:
Is there any sign of interference from your VFD on the sensor pulses?
I am finding that a bit of a problem.
Andy - are you sure it's from the VFD? I'm getting the some jitter even
with the VFD powered off. Set up a spindle speed meter as per page
Am 30.06.2009 um 17:09 schrieb Andy Pugh:
2009/6/30 Haberler Michael mai...@mah.priv.at:
The code rings are printed on plain paper with an inkjet printer, and
laminated into a plastic pouch
Interesting. When I tried a similar approach using clear tape I found
that the reflectivity of the
2009/6/30 Steve Blackmore st...@pilotltd.net:
Andy - are you sure it's from the VFD?
Yes, pretty much. The initial problem was with the limit switches
nuisance-tripping, and that only happened with the lathe spindle
turning, not with the milling spindle (which is on a DC motor). It
even seems
On Jun 30, 2009, at 3:26 PM, Haberler Michael wrote:
Am 30.06.2009 um 17:09 schrieb Andy Pugh:
2009/6/30 Haberler Michael mai...@mah.priv.at:
The code rings are printed on plain paper with an inkjet printer,
and
laminated into a plastic pouch
Interesting. When I tried a similar
If you make a disk, the number of slots per revolution will be limited
to something like 30kHz/3k RPM = 10
Note the common thinko here: 3k RPM is not the same as 3k RPS.
3kRPM = 50 RPS, so if you assume 30 kcounts/sec, you have 3 Hz / 50
= 600 counts/rev to play with.
*%$# it, I've
Kirk Wallace wrote:
On Sun, 2008-03-09 at 16:29 -0700, Curtis W. Moore wrote:
If I added pulses can it be done? My encoder is just a homebuilt opto
switch. Cutting out a new wheel with more slots/holes would be trivial.
Can EMC thread with just one train of pulses? Ie use just one pin of
the
On Mon, 2008-03-10 at 22:38 -0400, Stephen Wille Padnos wrote:
Kirk Wallace wrote:
On Sun, 2008-03-09 at 16:29 -0700, Curtis W. Moore wrote:
If I added pulses can it be done? My encoder is just a homebuilt opto
switch. Cutting out a new wheel with more slots/holes would be trivial.
Curtis W. Moore wrote:
I have been using Turbocnc as a control on my lathe. Turbocnc need just
one pulse per rev to to lathe threading. Is there a way to do this with EMC2?
Not a the moment.
Many folks (me among them) believe that you really need quite a few
counts per revolution to make
If I added pulses can it be done? My encoder is just a homebuilt opto
switch. Cutting out a new wheel with more slots/holes would be trivial.
Can EMC thread with just one train of pulses? Ie use just one pin of
the parallel port?
--- John Kasunich [EMAIL PROTECTED] wrote:
Curtis W. Moore
Curtis W. Moore wrote:
If I added pulses can it be done? My encoder is just a homebuilt opto
switch. Cutting out a new wheel with more slots/holes would be trivial.
Can EMC thread with just one train of pulses? Ie use just one pin of
the parallel port?
Nope. There MUST be a one pulse per
Curtis W. Moore wrote:
If I added pulses can it be done? My encoder is just a homebuilt opto
switch. Cutting out a new wheel with more slots/holes would be trivial.
Can EMC thread with just one train of pulses? Ie use just one pin of
the parallel port?
Right now it is set up to use a standard
On Sun, 2008-03-09 at 16:29 -0700, Curtis W. Moore wrote:
If I added pulses can it be done? My encoder is just a homebuilt opto
switch. Cutting out a new wheel with more slots/holes would be trivial.
Can EMC thread with just one train of pulses? Ie use just one pin of
the parallel port?
Just
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