Message: 9
Date: Thu, 31 Jan 2008 13:36:51 -0800
From: Dave Engvall [EMAIL PROTECTED]
Subject: Re: [Emc-users] DRO input?
Hi Dave,
It all depends on what you want to do. If you just want manual
position then the glass scales will do your job.
However, if you ever intend to control the
Dave.
I would say all the advice given to you is sort of a shot in the dark- until
you tell us your intentions with your equipment. Of course what you do with the
advice is up to you.
As far EMC and serial input from a DRO goes - there is no driver currently to
do what you ask, but it could
That is how my DRO's work that I built for my mill and lathe.
http://www.shumatech.com/
John
On 31 Jan 2008 at 18:04, [EMAIL PROTECTED] wrote:
Another thought, is there any value in having an RS-232 connection
with serial calipers or micrometers?
That would depend on the accuracy of your scales... .4 precision
(.001mm)is
not cheap...
In my case mine are not nearly that accurate...
I guess it depends on how much accuracy is needed and the future of the machine.
EMC does have screw mapping...
John
On 1 Feb 2008 at 4:04, [EMAIL
On Fri, 2008-02-01 at 06:03 -0600, John Thornton wrote:
That is how my DRO's work that I built for my mill and lathe.
http://www.shumatech.com/
John
On 31 Jan 2008 at 18:04, [EMAIL PROTECTED] wrote:
Another thought, is there any value in having an RS-232 connection
with serial
RogerN wrote:
Would it be difficult to update the actual position with the position
from the linear encoders? The DRO position would just stomp on the
actual position. Hopefully most of the time the error would be small
and it would require real time DRO position... or perhaps only assign
Yep! Wilson machine bought a 50' x 4' CMM at a Boeing auction. Got it
cheap and spent a million moving it and
getting it set up again. And that was only a few miles.
Holy COW! a 50 FOOT CMM? There must only be 2 or 3 in the
entire US that big. (I can understand why Boeing would need
such a
I have a different idea.
Why not tap in to the signal from the encoders themselves? If this is glass
scales with proper quadrature output it should be simple to read this
signals by a cheap card? There is nothing that says the quadrature signals
can't be read by both EMC and the DRO main unit.
I have just successfully tested my serial DAC with my VFD's and KBIC.
It's kind of strange to see it work with the KBIC, since it is floating
at about 70 Volts AC, but it works fine. See here:
http://www.wallacecompany.com/machine_shop/EMC2/serial_dac/
If anyone is interested, I can make a parts
[EMAIL PROTECTED] wrote:
Yep! Wilson machine bought a 50' x 4' CMM at a Boeing auction. Got it
cheap and spent a million moving it and
getting it set up again. And that was only a few miles.
Holy COW! a 50 FOOT CMM? There must only be 2 or 3 in the
entire US that big. (I can understand why
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