Greetings,
So I just got a response from my ballscrew vendor. They can supply a 40mm
diameter with 40mm pitch (3048 mm long) for a reasonable cost. Less than $1k
including shipping and machining.
Looks like that could safely rotate at 977 RPM which would move the ballnut at
1538 IPM (with bot
On Sun, Jul 22, 2012 at 6:25 PM, Jeshua Lacock wrote:
> >
> > Dunno why they said that, I've been running the rack and pinion for a few
> > years now, as have quite a few others on their machines, and the rack and
> > pinion works just fine. No resonance, though that's usually a factor of
> > th
Aram,
See:
http://reprap.org/wiki/EMCRepRap
http://reprap.org/wiki/Main_Page
Regards,
Eric
interesting if anyone used EMC to build rapid prototype machine.
it should be 4 axis machine. 3 axis X Y Z and 4th axis head that injects
liquid wax -plastic.
Problem is in how from 3d surface/solid mode
On 23.07.12 07:20, Eric H. Johnson wrote:
> interesting if anyone used EMC to build rapid prototype machine.
> it should be 4 axis machine. 3 axis X Y Z and 4th axis head that injects
> liquid wax -plastic.
Now that is very thought provoking. Is anyone making wax patterns with
one of these CNC ext
On Mon, Jul 23, 2012 at 8:45 AM, Erik Christiansen
wrote:
> On 23.07.12 07:20, Eric H. Johnson wrote:
> Erik
>
> --
> "With sufficient thrust, pigs fly just fine. However, this is not
> necessarily
> a good idea. It is hard to be sure where they are going to land, and it
> could
> be dangerous sit
To Andy & Steve;
I made another of the dual thread screws yesterday, and can report that it
seems to work well. However it seems that I must have a flexibility
problem in using a cutoff knife sharpened with a 60 degree V and a slight
(10 degree?) hook though. Or it doesn't have sufficient 'he
It may depend a lot on how well the machine is designed around the rack.
We have two moving gantry 5x10ft routers that have been no end of a
maintenance nightmare for me, because of their rack and pinion design.
Since 2005 I have had to replace 2 sets of racks 4 sets of pinions, and
countless beari
2012/7/23 Todd Zuercher :
> And the quality of the cut at
> federates above 200ipm leaves much to be desired compared to our
> similarly sized and specked ball screw driven machines. To give them
> credit we are using them much harder than they were designed for, we
> run'em 24hr 5 days a week, an
On 23.07.12 08:51, Mark Wendt wrote:
> Saw your sig box and just had to chuckle. We said that about the F-4
> Phantom I used to fly for the USAF. Never had a problem landing it
> though. Well, except for that one time when the hydraulics... ;-)
With the single tailfin, I guess you'd be an inch
Hi Aram
> Problem is in how from 3d surface/solid model generate G M code program
> to move axis and govern the head?
That's no problem at all, Skineforge doese exactly that:
http://fabmetheus.crsndoo.com/wiki/index.php/Skeinforge
See you
Flo
---
On Mon, Jul 23, 2012 at 9:43 AM, Erik Christiansen
wrote:
> On 23.07.12 08:51, Mark Wendt wrote:
> > Saw your sig box and just had to chuckle. We said that about the F-4
> > Phantom I used to fly for the USAF. Never had a problem landing it
> > though. Well, except for that one time when the hy
On 07/23/2012 03:05 AM, Jeshua Lacock wrote:
> So I just got a response from my ballscrew vendor. They can supply a 40mm
> diameter with 40mm pitch (3048 mm long) for a reasonable cost. Less than $1k
> including shipping and machining.
>
> Looks like that could safely rotate at 977 RPM which woul
Gentlemen,
I was thinking like a shop owner and it did not even hurt. :)
Is some of the resistance to LinuxCNC on machines the reality of lack of
service personnel? If this is so then maybe we should work on specific and
explicit docs and messages to allow the control to diagnose (or tell the
op
On 07/23/2012 10:45 AM, Stuart Stevenson wrote:
> Maybe a debug gui with message tags at various places in the software to
> display the control flow and where the current tag is stopped.
Are you thinking of a program to comb through the log files looking
for error messages that we know how to
I was thinking of having a debug level of messages interspersed in the
config files that when read would build a display of the program flow with
a 'token' showing where the control flow is currently. This would allow a
debug to pinpoint the stopping point and also watch the flow during the
develop
I think 'Shop owner resistance' stems from the fact that LCNC does not have
an 0800 'Help desk' or 'call your nearest agent', etc. There is no '30 day
money back satisfaction guarantee' or 'Full refund if you are not completely
satisfied' which is a something that everybody expects these days,
This summer's Digital Machinist magazine has an article by Dave Mauch on
both retrofitting an existing 3 axis machine and the software to slice and
dice models into gcode. Just recived a free copy in the mail last week.
On Mon, Jul 23, 2012 at 9:50 AM, Florian Rist wrote:
> Hi Aram
>
> > Proble
On 22 July 2012 23:32, Jeshua Lacock wrote:
> Has anyone successfully machined the parts required?
A variant, yes:
https://picasaweb.google.com/lh/photo/9gDwFeKRO-e7uH17gD0ru9MTjNZETYmyPJy0liipFm0?feat=directlink
https://picasaweb.google.com/lh/photo/codwX5WaHkHyyW76-J-GxtMTjNZETYmyPJy0liipFm0?f
Belli,
You are probably correct about the dreaded 'shop owner'. But, if the
maintenance man, operator, or other individual in the chain can more easily
use the software then the 'shop owner' will more likely listen to the
person proposing the retrofit.
On Mon, Jul 23, 2012 at 11:38 AM, Belli But
2012/7/23 Belli Button :
> I think 'Shop owner resistance' stems from the fact that LCNC does not have
> an 0800 'Help desk' or 'call your nearest agent', etc.
I am building machines with LinuxCNC on it. _All_ of my contracts
include 24 month warranty, so I am that agent my clients are
calling...
Our first of these two machines actually had the racks and pinions replaced
while still under factory warranty. We are only cutting MDF with them (just
lots of it). The flaws I see with the machines are, spring loaded engagement
of the pinion to rack, (lets pinion pull out of rack under heavy
2012/7/23 Todd Zuercher :
> Our first of these two machines actually had the racks and pinions replaced
> while still under factory warranty. We are only cutting MDF with them (just
> lots of it). The flaws I see with the machines are, spring loaded engagement
> of the pinion to rack, (lets pi
On Jul 23, 2012, at 12:01 AM, a...@conceptmachinery.com wrote:
> interesting if anyone used EMC to build rapid prototype machine.
> it should be 4 axis machine. 3 axis X Y Z and 4th axis head that
> injects liquid wax -plastic.
Hi Aram,
There has been some discussion on this list recently conv
I've got a D525mw, and every once in a while it'll throw up an RTAI error.
At first I thought it was the update manager, but turning that off did not help.
my BASE_PERIOD is 30769; I wonder if that is way off the mark? Anyone with an
Intel D525MW willing to tell me what you use?
(I'll admit to
On Monday 23 July 2012 22:16:53 John Stewart did opine:
> I've got a D525mw, and every once in a while it'll throw up an RTAI
> error.
>
> At first I thought it was the update manager, but turning that off did
> not help.
>
> my BASE_PERIOD is 30769; I wonder if that is way off the mark? Anyone
I use 0 to 5 degree rake and 2 to 3 degrees absolute flank clearance.
The compound angle, viewed orthogonal to side view, is about 10 to 15
degrees. The spiral effect (lead angle) causes entering side to be
more acute than exit. Nothing is really terribly critical as long as a
cutting flank does no
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