[EMAIL PROTECTED]
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Sent: Wednesday, March 19, 2008 2:12:39 AM
Subject: Re: [Emc-users] home-mad CNC machine project.
On Tue, 2008-03-18 at 18:52 -0700, Jorge Barrera wrote:
Jim,
At some point I would like to do a retrofit, I know
This list is probably as good a place to carry forward a bit of thinking about
open hardware and virtual CNC machine companies as any because this is THE
place to find the control software for a wide range of these kinds of devices.
I'll snip both Kirk and Jorge quite a bit and I suggest you
On Wednesday 19 March 2008, Jorge Barrera wrote:
Kirk,
Thank you for the detail thoughts. I agree that there needs to be a special
chemistry for open source hardware projects to take off and that people
contribute. Its curerntly my job to figure this out or at least give it a
hard long try. As
On Wed, 2008-03-19 at 08:44 -0700, [EMAIL PROTECTED] wrote:
... snip
... It doesn't just happen out of a couple of posts.
...But it does require a real prototype that does some real work.
My vision of a real collaborative project has the collaboration start at
the very beginning with the
] [EMAIL PROTECTED]
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Sent: Wednesday, March 19, 2008 11:44:42 AM
Subject: Re: [Emc-users] home-mad CNC machine project.
This list is probably as good a place to carry forward a bit of thinking about
open hardware and virtual CNC
On Sat, 15 Mar 2008, [EMAIL PROTECTED] wrote:
The second thought is EMC2 related. The linear scales, while very
accurate in themselves have not proven to be very good for use with EMC2
control. The problem has to do with backlash in the drive components.
Our backlash compensation counts
Fantastic. Thanks for that link.
--- [EMAIL PROTECTED] wrote:
...
F We've talked about
using a motor driven encoder connected to one PID loop in our software to
handle this lash problem and another PID connected to the linear scale to
handle final positioning. I don't know that any real
questions.
DougM
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of seth wiley
Sent: Sunday, March 02, 2008 1:10
PM
To: [EMAIL PROTECTED];
Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] home-mad
CNC machine project.
se
Hey Doug. Thanks for the report. Good thoughts all.You might look at www.McMaster.com and search for ball screws. Or attempt to put the link below back together. Their 5/8 screws are about $1.25 an inch and the nuts run $25. I used a single nut to test lash and got between 0.001 and 0.003. I know
Hi Doug,
I've had passable luck on ebay for ball screws. Sometime you look and
there is nothing and other times several good ones. Just depends.
Good hunting.
Dave
On Mar 14, 2008, at 5:24 AM, [EMAIL PROTECTED] wrote:
Hey Doug. Thanks for the report. Good thoughts all.
You might look
Hi Rayh,
Can you tell me or point me to a website that describes the process for
measuring backlash? Thanks.
Andy
[EMAIL PROTECTED] wrote:
Hey Doug. Thanks for the report. Good thoughts all.
You might look at www.McMaster.com and search for ball screws. Or
attempt to put the link
Andrew Ayre wrote:
Hi Rayh,
Can you tell me or point me to a website that describes the process for
measuring backlash? Thanks.
Assuming the screws are mounted on a machine, you put a dial
indicator (preferably one that reads out in .0001 units -- they
call that a tenths reading indicator)
was able to push the machine across the display table
but not stop the motion.
HTH
Rayh
--- [EMAIL PROTECTED] wrote:
From: Jon Elson [EMAIL PROTECTED]
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: Re: [Emc-users] home-mad CNC machine project.
Date: Fri, 14 Mar 2008
Thanks Jon for the explanation.
Andy
Jon Elson wrote:
Andrew Ayre wrote:
Hi Rayh,
Can you tell me or point me to a website that describes the process for
measuring backlash? Thanks.
Assuming the screws are mounted on a machine, you put a dial
indicator (preferably one that reads out in
Controller (EMC) emc-users@lists.sourceforge.net; [EMAIL
PROTECTED]
Sent: Friday, March 14, 2008 1:35:27 AM
Subject: Re: [Emc-users] home-mad CNC machine project.
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, March 02, 2008 1:10 PM
To: [EMAIL PROTECTED]; Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] home-mad CNC machine project.
sean,
i'm slowly (in my very spare sparetime) working up a small (12x12x3) low
tolerance cnc machine for light wood and plastics. it is also serving as a
general
sean,
i'm slowly (in my very spare sparetime) working up a small (12x12x3) low
tolerance cnc machine for light wood and plastics. it is also serving as a
general teach-myself-cnc project. i chose to go with a pre-config'd
electronics / servos package from keling inc. (
Sean,
An easy way to go for a first project is to us drawer slides for the
guide ways.. Look at http://tinyurl.com/3b6gkf and you may get some
ideas. You can usually pick up suitable drawer slides fairly cheaply and
all you need to do then is to mount them parallel to each other - you
can use
I started down the path of building the Instructible you mentioned. I
even have the metal framework built. However unless you scavenge
everything, the costs will add up. For example, look up the cost of each
of the stepper driver chips mentioned in the instructible. Times that by
three (one
if
you want to roll your own.
If you don't mind spending a bit more then go with the Geckos. You won't
regret it.
From: [EMAIL PROTECTED]
To: emc-users@lists.sourceforge.net
Sent: Friday, February 29, 2008 10:59 PM
Subject: [Emc-users] home-mad CNC machine project.
I was wondering
on the web
if you want to roll your own.
If you don't mind spending a bit more then go with the Geckos. You won't
regret it.
*From:* [EMAIL PROTECTED]
*To:* emc-users@lists.sourceforge.net
*Sent:* Friday, February 29, 2008 10:59 PM
*Subject:* [Emc-users] home-mad CNC machine project.
I
I was wondering if anyone has ever tried a do-it-yourself CNC project like
this. [LINK:
http://www.instructables.com/id/Easy-to-build-CNC-Mill-Stepper-Motor-and-Driver-ci/]
http://www.instructables.com/id/Easy-to-build-CNC-Mill-Stepper-Motor-and-Driver-ci/
and this [LINK:
Sean,
The stepper driver looks OK at a first glance but I did not have a
detailed look at the schematics.
It looks to be a full-step driver which is nice since full step drivers
tend to have a higher torque than microstep ones.
But I would stay away from the easy to build desktop thingy from
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