I put a thread on cnczone.
On Jul 26, 2013 9:49 PM, "Jon Elson" wrote:
> Kent Reed wrote:
> > I wonder if there is any point to getting in touch with some of the
> > companies which service this equipment. When I tried searching on
> > "Cincinnati Milacron IBA" for example I got hits on companies
andy pugh wrote:
> Yes. But that is conventional and logical. I was wondering if I could
> eliminate all motors from the toolchanger and still have a rotary
> carousel.
> (so that tools can live outside the work envelope)
>
Put a ratchet on the carousel, and have a place where the spindle pokes
Kent Reed wrote:
> I wonder if there is any point to getting in touch with some of the
> companies which service this equipment. When I tried searching on
> "Cincinnati Milacron IBA" for example I got hits on companies like
> controlrepair.com and galco.com. It's possible they know only the
> elect
Eric Keller wrote:
> This is interesting, I have some brushless grinder spindles that have
> 4 wires. I was trying to figure out what configuration they were, but
> after seeing this topic and asking brother Google, I find that 2 phase
> is a common thing for these types of motors. The only thing
On 27 July 2013 00:54, John Kasunich wrote:
> Can your spindle drive orient the spindle? Probably required if the
> spindle taper is one of those with driving keys, otherwise not needed.
Not yet, but as it is on a Resolver I have 16 bits of precision (and
24 bits of resolution) of spindle angle
The mini-toolchanger is outside the work space
http://home.insightbb.com/~joevicar3/default.htm
But might need to be adapted. It is basically powered by pneumatic
draw bar goes through the spindle. Don't really remember how the
rotary action of the changer is driven. I think it is from a
pneuma
On Fri, Jul 26, 2013, at 07:21 PM, andy pugh wrote:
> On 26 July 2013 23:57, Jack Coats wrote:
> > It is similar to http://www.cadcamcadcam.com/toolchanger.aspx
> > designed for the sherline.
>
> But the tools need to live inside the work envelope. I was wondering
> about only having two tools
On 26 July 2013 23:57, Jack Coats wrote:
> It is similar to http://www.cadcamcadcam.com/toolchanger.aspx
> designed for the sherline.
But the tools need to live inside the work envelope. I was wondering
about only having two tools in the work envelope and using the axes
and spindle to move the c
On 26 July 2013 23:52, dave wrote:
>> I have been idly pondering a rotary rack toolchanger.
>> The idea is that the spindle replaces the tool, then makes an arc-move
>> to index the rotating rack, them releases, moves up, and selects the
>> next tool.
> However, it would seem that if you index w
At one time I saw images of the Shopbot tool change system. It was
basically a tool tray/holder down one side/end and the spindle drives
and changes it with help of the gantry, rather than the tool changer
moving. It is similar to http://www.cadcamcadcam.com/toolchanger.aspx
designed for the sher
On Fri, 2013-07-26 at 22:03 +0100, andy pugh wrote:
> On 26 July 2013 21:32, Sven Wesley wrote:
>
> > I am in the planning phase of making a small machining center (i haven't
> > found one I'm pleased with...) and I need a tool changer. My idea at the
> > moment which still is in a sketching phas
On 26 July 2013 23:38, Stuart Stevenson wrote:
> LinuxCNC handles random tool changing. LinuxCNC will keep track of which
> tool is in which pocket.
Yes, I know that.
The point is, though, that in this scenario the spindle is rotating
the carousel, and many of the tools may be outside the work en
LinuxCNC handles random tool changing. LinuxCNC will keep track of which
tool is in which pocket. If you only load tools through the spindle and pay
no attention to the tool order in the magazine you will have no trouble.
On Fri, Jul 26, 2013 at 4:03 PM, andy pugh wrote:
> On 26 July 2013 21:3
thanks
information requests sent
On Fri, Jul 26, 2013 at 3:12 PM, Kent Reed wrote:
> On Fri, Jul 26, 2013 at 10:53 AM, Stuart Stevenson >wrote:
>
> > I just talked to Siemens. There is a USD330.00 charge to talk to a
> > technician about a mature product.
> > If I thought for a second they wou
I just picked up an NSK 6" 4th axis.
It has an air powered brake in it. It appears that it has something like a
megatorque motor in it as it rotates very smoothly, without any "gear"
sounds".
Overall it is in fair shape and seems good and tight. My cheapo dial
indicators didn't show any run-out o
On 26 July 2013 21:32, Sven Wesley wrote:
> I am in the planning phase of making a small machining center (i haven't
> found one I'm pleased with...) and I need a tool changer. My idea at the
> moment which still is in a sketching phase, is to make a Tormach style
> changer; http://www.tormach.co
Guys,
I am in the planning phase of making a small machining center (i haven't
found one I'm pleased with...) and I need a tool changer. My idea at the
moment which still is in a sketching phase, is to make a Tormach style
changer; http://www.tormach.com/upgrades_tts_atc.html
I'm going the Mesa ro
On Fri, Jul 26, 2013 at 3:55 PM, Andrew wrote:
>> Could it be 3-phase Y connection with a common wire?
What's the point of the Y connection? If it somehow makes it cheaper,
it would make sense. They came off of a PC board router.
-
On Fri, Jul 26, 2013 at 10:53 AM, Stuart Stevenson wrote:
> I just talked to Siemens. There is a USD330.00 charge to talk to a
> technician about a mature product.
> If I thought for a second they would give/sell me the communication
> protocol I would do it. I won't pay to have them tell me I won
2013/7/26 Eric Keller
https://mail.google.com/mail/u/0/?view=cm&fs=1&tf=1&to=eekel...@psu.edu>
>
> On Fri, Jul 26, 2013 at 8:09 AM, Andrew
> https://mail.google.com/mail/u/0/?view=cm&fs=1&tf=1&to=parallel.kinemat...@gmail.com>>
> wrote:
>
> > I need to drive rare 2-phase BLDC motors, 60V 22A. Is
Oh, those poor little traces on the pcb. They're a bit smaller than the
6-3 cable that runs to our electric stove, and that only is rated for 50A.
On Fri, Jul 26, 2013 at 2:39 PM, John Kasunich wrote:
> Huge is certainly a relative term. That sink isn't going to
> dissipate 78 watts unless you
On Fri, 26 Jul 2013, Andrew wrote:
> Date: Fri, 26 Jul 2013 22:38:55 +0300
> From: Andrew
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] Two phase BLDC motors
>
> 2013/7/26 andy pugh
>
>> On 26 July 2013 19:39, Ralph
2013/7/26 andy pugh
> On 26 July 2013 19:39, Ralph Stirling
> wrote:
> > That little board doesn't have any heat sinking
>
> I think it has a huge one on the back?
>
Not so huge (5x5cm), and it looks like it contacts with the board, not the
chips. But say 25A current produces 10W heating, that
Huge is certainly a relative term. That sink isn't going to
dissipate 78 watts unless you dip the fins in ice water.
But is certainly will dissipate something. And 0.016 ohms is
a pretty low on-resistance.
Let's say the sink can handle 10 watts. In an H-bridge, one
device on each side is condu
On Fri, Jul 26, 2013 at 8:09 AM, Andrew wrote:
> I need to drive rare 2-phase BLDC motors, 60V 22A. Is there a suitable MESA
> hardware for LinuxCNC?
This is interesting, I have some brushless grinder spindles that have
4 wires. I was trying to figure out what configuration they were, but
after
On 26 July 2013 19:39, Ralph Stirling wrote:
> That little board doesn't have any heat sinking
I think it has a huge one on the back?
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.com/Manifesto
--
See
Actually, the datasheet for the Infineon BTS7970 visible on that board
indicates it is rated for 70A and 28V. It has 0.016ohm on resistance,
so 70A would produce 78watts of heating. That little board doesn't
have any heat sinking, which would be the limiting factor in actual use.
I also notice th
Quoting:
Date: Fri, 26 Jul 2013 20:48:07 +0300
From: Andrew
Subject: Re: [Emc-users] Two phase BLDC motors
To: "Enhanced Machine Controller (EMC)"
Message-ID:
Content-Type: text/plain; charset=UTF-8
Andrew
2013/7/26 John Kasunich
https://mail.google.com/mail/u/0/?view=cm&fs=1&tf=1&to=jmkasun.
2013/7/26 Andrew
> I guess that double H-bridge motor drives with PWM input should like these
> http://www.ebay.com/itm/171080096646? (I found that rated voltage for
> those motors is 27V).
> That is quite inexpensive.
>
> Oh, I'm wrong... that should be two such drives per motor. And they need
t
Finding some stuff but not what I need.
On Jul 26, 2013 10:25 AM, "Stuart Stevenson" wrote:
> I will check.
>
>
> On Fri, Jul 26, 2013 at 10:04 AM, andy pugh wrote:
>
>> On 26 July 2013 15:53, Stuart Stevenson wrote:
>> > I just talked to Siemens. There is a USD330.00 charge to talk to a
>> > t
Andrew
2013/7/26 John Kasunich
https://mail.google.com/mail/u/0/?view=cm&fs=1&tf=1&to=jmkasun...@fastmail.fm>
>
> Is it a three-wire or four-wire connection to the motor? If four-wire,
> a dual H-bridge is probably the way to go. Something like the 7i40
> (7A, 80V) would let you prove out the
2013/7/26 John Kasunich
https://mail.google.com/mail/u/0/?view=cm&fs=1&tf=1&to=jmkasun...@fastmail.fm>
>
> On Fri, Jul 26, 2013, at 12:19 PM, Andrew wrote:
>
> > Is there any way (assuming blcd comp is modified for 90degrees) to use
> > 3-phase external commutation drive like AMC S60A40 or even 7i
On Fri, Jul 26, 2013, at 12:19 PM, Andrew wrote:
>
> Is there any way (assuming blcd comp is modified for 90degrees) to use
> 3-phase external commutation drive like AMC S60A40 or even 7i39 (just to
> test if it works)? Like connect one winding to AB output and other to BC.
> Does 7i29
>
Is i
>
> > Date: Fri, 26 Jul 2013 14:44:28 +0100
> > From: andy pugh
> > https://mail.google.com/mail/u/0/?view=cm&fs=1&tf=1&to=bodge...@gmail.com>
> >
> > Reply-To: "Enhanced Machine Controller (EMC)"
> >
> > https://mail.google.com/mail/u/0/?view=cm&fs=1&tf=1&to=emc-users@lists.sourceforge.net>
I will check.
On Fri, Jul 26, 2013 at 10:04 AM, andy pugh wrote:
> On 26 July 2013 15:53, Stuart Stevenson wrote:
> > I just talked to Siemens. There is a USD330.00 charge to talk to a
> > technician about a mature product.
>
> The last time I looked there was an _immense_ amount of info avail
On 26 July 2013 15:53, Stuart Stevenson wrote:
> I just talked to Siemens. There is a USD330.00 charge to talk to a
> technician about a mature product.
The last time I looked there was an _immense_ amount of info available
for free on the Siemens site.
--
atp
If you can't fix it, you don't own
I just talked to Siemens. There is a USD330.00 charge to talk to a
technician about a mature product.
If I thought for a second they would give/sell me the communication
protocol I would do it. I won't pay to have them tell me I won't get the
information from them. :)
On Thu, Jul 25, 2013 at 11:
On Fri, 26 Jul 2013, andy pugh wrote:
> Date: Fri, 26 Jul 2013 14:44:28 +0100
> From: andy pugh
> Reply-To: "Enhanced Machine Controller (EMC)"
>
> To: "Enhanced Machine Controller (EMC)"
> Subject: Re: [Emc-users] Two phase BLDC motors
>
> On 26 July 2013 13:09, Andrew wrote:
>
>> I need
On 26 July 2013 13:09, Andrew wrote:
> I need to drive rare 2-phase BLDC motors, 60V 22A. Is there a suitable MESA
> hardware for LinuxCNC?
What does the excitation pattern look like?
> Though I guess bldc comp is meant for 3-phase motors.
It is, but as it is a ".comp" it is easy to modify.
Hello,
I need to drive rare 2-phase BLDC motors, 60V 22A. Is there a suitable MESA
hardware for LinuxCNC? Though I guess bldc comp is meant for 3-phase
motors. If not, another inexpensive solution would be appreciated.
Thanks,
Andrew
---
Thanks.. I was getting closer - I kept finding references to 611..
A quick scan seems like they may be useable..
sam
On 7/26/2013 12:16 AM, Martin Kuhnle wrote:
> Hi Sam,
>
> search for Siemens Simodrive 610. There is a lot of information available.
>
> http://cache.automation.siemens.com/dnl/T
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