Re: [Emc-users] OT makino knucklehead huge mass and fast

[Drew Rogge]

The video says 1200 kg. So about 2600 lbs.

On 6/14/23 6:05 AM, Todd Zuercher wrote:

Think that is a solid chunk of steel mounted on that?  If so about what would 
it probably weigh?

Todd Zuerc
P. Graham Dunn Inc.
630 Henry Street
Dalton, Ohio 44618
Phone:  (330)828-2105ext. 2031

-Original Message-
From: Thomas J Powderly 
Sent: Wednesday, June 14, 2023 5:39 AM
To: emc-users@lists.sourceforge.net
Subject: [Emc-users] OT makino knucklehead huge mass and fast

[EXTERNAL EMAIL] Be sure links are safe.

OT but certainly an achievement

https://www.youtube.com/watch?v=4x1900_T4-M

they must have had the concrete barbers in to anchor it down

tomp



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Re: [Emc-users] Milling setup question

[Drew Rogge]

On 3/31/17 2:00 AM, andy pugh wrote:
> On 31 March 2017 at 04:02, Drew Rogge  wrote:
>
>> place the part on the base and machine large face
> Initially the base will have a casting draft on it, so isn't
> perpendicular to the large flat face. The large flat face is the mould
> parting line, so should be fairly flat. This is why I was using it as
> the initial reference.
Maybe I'm misunderstanding what your doing. I'm assuming that the two things 
you want aligned are
the bore perpendicular to the large face and a key way  in the base. I was 
wrong in referring to the key way as a t-slot. In the original mail you were 
referring to making a hole perpendicular to and aligned to the center of the 
bore. Couldn't see a hole in the drawing and it looked like there was a key way 
aligning the center of the bore to the center t-slot of the table.

One more setup then; large face down and face cut base, then base down and face 
cut large face, back to large face down and skim cut on base and cut key way on 
base. This gets the two faces perpendicular and the center of the key way 
perpendicular to the large face.
>> sweep the two sides of the t-slot to center spindle on slot
> When you say "T slot" do you mean the one in the table? Those run the
> wrong direction.
>
> Here is the machine in action making a similar sort of part:
> https://goo.gl/photos/UikBgobYDxCnHAZi7
> Though that one didn't need an alignment key as it was a fit, dial in
> once and pin in place job.
>
Sorry about the confusion with regards to t-slot and key way.

Drew

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Re: [Emc-users] Milling setup question

[Drew Rogge]

I would:

place the part on the base and machine large face

place part on large face and  machine the base and the t-slot. This means that 
the base and long dim. of the  t-slot are perpendicular to the face

place part on base and indicate large face to be perpendicular to spindle. This 
also means that length of the t-slot is parallel to the spindle

sweep the two sides of the t-slot to center spindle on slot

machine bore.

Drew

On 3/30/17 4:02 AM, andy pugh wrote:
> If you have a part with a large bore through the middle, how do you
> set up to machine a hole exactly perpendicular to the axis of that
> bore?
>
> I imagine that this is quite a common problem, so must have a common solution?
>
> My particular setup puzzle is analagous to this, except that I will be
> using the horizontal spindle.
>
> Machining this casting: https://goo.gl/photos/6QhNnqjzRuSJJpva7
>
> The order of operations will be, starting with the raw casting:
> 1) with the large flat face clamped down to the table machine the base flat.
> 2) Now clamp the base to the table, face off the large flat face and
> machine the large bore.
> 3) Return to the original setup and machine a key-slot in the base
> _exactly_ on the axis of the large bore.
>
> 3) is the problem. I can indicate the base to make sure that is
> perpendicular to the spindle axis, but how do I make sure that the
> bore axis and the spindle axis intersect?
>

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Re: [Emc-users] Moving axis while paused

[Drew Rogge]

Andy,

They're in the "Tabs" item in the Geometry tab of the 2D Contour CAM operation. 
They may also be in other CAM operations but I haven't run into them yet.

Drew

On 6/27/16 8:56 AM, andy pugh wrote:
> On 27 June 2016 at 15:28, Chris Kelley  wrote:
>> I would say that the "proper answer" is to teach the users to properly use
>> holding-tabs, hold-downs, etc
> That reminds me, I used holding tabs a lot in CamBam, but haven't even
> found them in Fusion360 or Inventor HSM. I wonder if they are there to
> be found?
>
> However, to say that it is possible to never need to stop a job
> part-way through to fix something is, I think, going a bit far. As I
> recall the moveoff component was written after a request from a
> commercial roll-machining company who wanted to be able to change
> chipped or worn tips mid-job.
>

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Re: [Emc-users] CAD/CAM for LinuxCNC

[Drew Rogge]

I think you just down load the free trial from 
http://www.autodesk.com/products/fusion-360/overview and start using. Mine 
hasn't timed out or anything yet.
Drew


On 5/11/16 8:33 PM, Bruce Layne wrote:
>
> On 05/11/2016 09:57 PM, Andy Pugh wrote:
>>> On 11 May 2016, at 20:26, Erik Friesen  wrote:
>>>
>>> So its web based, but $300 won't buy you maintenance for any other equally
>>> powerful cam.
>> It costs less than that for hobby and startup use. And I think that their 
>> definition of "startup" is quite generous.  (Less than $100,000 per year)
> I told my brother he could try Fusion360 for $300 a year, or less for
> hobby or small business use, but I was unable to find the lower cost
> option.  It looks like AutoDesk has captured enough of the market that
> it's now $300 per year...
>
> http://www.autodesk.com/products/fusion-360/try-buy
>
> ...unless you are a student or teacher, in which case it's free.
>
> http://www.autodesk.com/products/fusion-360/students-teachers-educators
>
> If anyone knows of the lower price option for a hobbyist who is not a
> student or teacher, I'd be very interested on my brother's behalf.  I'm
> still committed to FreeCAD or OpenSCAD for my piddly designs, although
> mostly I just write my simple G code by hand.
>
>
>
>
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Re: [Emc-users] Rigid tapping speed advice

[Drew Rogge]

Thanks Tom.

On 1/22/16 6:31 PM, tom-...@bgp.nu wrote:
> We ordered the 1024ppr encoder (EM1-2-1024-I): 
> http://www.usdigital.com/products/encoders/incremental/modules/EM1#description
> with this disk: 
> http://www.usdigital.com/products/encoders/incremental/rotary/disks/DISK-2
> and this cable: 
> http://www.usdigital.com/products/cables-connectors/cables/5-pin/CA-C5-SH-NC
>
> Attached is a link to the only (stp) file I could find of the encoder mount.  
> I tapped the small holes in this bracket by hand with a 4-40 tap (don’t tell 
> anyone I used SAE screws on a metric only machine!) to mount the encoder to 
> it.  The countersunk holes (using an M4 screw I believe) held this mount to 
> the backplate of the encoder housing with the same screws that held the EMCO 
> encoder to it..  I then adjusted the encoder wheel to line up in the slot as 
> it should using the stock Emco disk mounting hardware which is adjustable.  I 
> can’t be sure that I didn’t modify the dimensions of this drawing for the 
> final part but I don’t recall doing that.  I usually have my gcode or job 
> file but I can’t seem to find them.  I was only making one so I may have 
> failed to save it…
>
> bgp.nu:/~tom/pub/EMCO120P-NewEncoderBrakt.stp
>
> -Tom
>

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Re: [Emc-users] Rigid tapping speed advice

[Drew Rogge]

Hi Tom,

How did you end up mounting the new encoder to your EMCO? I'd like to do the 
same thing to mine.

Drew

On 1/22/16 7:58 AM, tom-...@bgp.nu wrote:
>
> However, I often see videos of machining centers just spinning way a high 
> speed tapping like it’s no big deal.  Should I be tapping at much higher 
> spindle speed in order to have more torque?  Will the spindle be able to stop 
> and reverse at those speeds to pull it off?  I have aggressive start/stop 
> settings on the VFD that controls the spindle, the encoder is 1024ppr 
> quadrature….
>
>
> -Tom
>
>
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Re: [Emc-users] Dyna Mechtronics DM2016 CNC mill - $1500 San Jose CA

[Drew Rogge]

Didn't notice that Pete. An online search gave 87x138x96. How tall is the 
ceiling in your garage?

On 11/18/15 7:14 PM, Pete Matos wrote:
> LOL it actually says it is 72x60x96  with I would  guess the 96 would be
> inches tall... I have a larger machine than that in my garage shop right
> now...
>
> Pete
>
>
> On Wed, Nov 18, 2015 at 9:55 PM, Drew Rogge  wrote:
>
>> Thought people might be interested in this:
>>
>> http://sfbay.craigslist.org/sby/tls/5320752766.html
>>
>> I'm lusting after it but at an overall size of about 8' x 12' x 8' it's
>> not exactly garage size.
>>
>> Drew
>>
>> --
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>> d...@dasrogges.com
>>
>> Phone: 8934OOO629OO4829631OOO
>>
>>
>>
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[Emc-users] Dyna Mechtronics DM2016 CNC mill - $1500 San Jose CA

[Drew Rogge]

Thought people might be interested in this:

http://sfbay.craigslist.org/sby/tls/5320752766.html

I'm lusting after it but at an overall size of about 8' x 12' x 8' it's not 
exactly garage size.

Drew

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Re: [Emc-users] CAD/CAM for LinuxCNC

[Drew Rogge]

I'm not sure how many Tormach machines are out there but hopefully Tormach 
going with linuxcnc and therefore linux may encourage companies like Autodesk 
to support linux better. Of course they could look at the linux box just being 
a machine controller and all cad/cam work occurs on other operating systems.

On 9/18/15 4:22 PM, Dave Cole wrote:
> I'm sure it was not a happy day for the Artsoft Team when Tormach went to a 
> LinuxCNC/Machinekit solution. 

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Re: [Emc-users] Knurling with a threading tool using spindle coordinated motion (G33) on EMCOTurn 120P CNC lathe

[Drew Rogge]

Hi Tom,

What spindle motor are you using that can reliably get down to 100 RPM? MY 
3phase with a GS2 VFD and barely handle 400 RPM.

Thanks,
Drew


On 9/12/15 8:39 AM, Tom Easterday wrote:
> On Sep 12, 2015, at 10:51 AM, Gene Heskett  wrote:
>> I see that video, very impressive.  But what sort of a threading tool can
>> be driven at that high a side angle?  None of the inserts I have, have
>> that sort of high angle side clearances.
> It is one of these, reversed in the turret (turning M3) with a 16ER A60 
> insert:  http://www.shars.com/catalogsearch/result/?q=404-1979
> -Tom
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Re: [Emc-users] eBay Mill in California

[Drew Rogge]

Here's another one in California
http://sfbay.craigslist.org/eby/bfs/5100473197.html

Not in as nice a shape but looks like it might have a tool changer.

Drew

On 7/5/15 8:20 AM, Kirk Wallace wrote:
> These convert very nicely:
> http://www.ebay.com/itm/321797212854
>
> This one is an AN-S
>
> (for reference: http://www.wallacecompany.com/machine_shop/Shizuoka/ but
> is a slightly smaller ST-N)
>


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Re: [Emc-users] flashing with mesaflash?

[Drew Rogge]

The bit file is what gets written to the board. Don't forget to power cycle 
your computer after installing. Not reboot, not restart, power cycle. The power 
cycle is necessary to write the code to the FPGA.

Drew

On 6/30/15 6:32 PM, Gene Heskett wrote:
> I have installed these file from 5i25.zip, into /lib/firmware/hm2/5i25:
> gene@GO704:/lib/firmware/hm2$ ls -l 5i25
> total 348
> -rw-r--r-- 1 root root 340704 Sep  5  2014 5i25_prob_rfx2.bit
> -rw-r--r-- 1 root root   9504 Jan 17  2014 5i25_prob_rfx2.xml
>
> But which is it that I am supposed to write to the 5i25, using mesaflash?
> ISTR its the .xml file but its been a year or so since the last time I
> did it.
>
> Some install docs in that 5i25.zip sure would be handy.
>
> Is there another site that does explain this?
>
> Cheers, Gene Heskett


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Re: [Emc-users] Back tool lathe movement question (was lathe tool display bug in Axis preview on the developers list)

[Drew Rogge]

Hey Tom,

I'm not sure I have everything correct on my EMCO 120 but I can send you my 
config files if it would help.

Drew

On 6/27/15 3:48 PM, Tom Easterday wrote:
> Check that, doing this doesn’t seem to have any effect that I can see.  The 
> tools still appear as back tools but the arrow keys are still mapped 
> incorrectly.
> -Tom
>
>> On Jun 27, 2015, at 6:32 PM, Tom Easterday  wrote:
>>
>>
>>> On Jun 27, 2015, at 6:13 PM, Kirk Wallace  
>>> wrote:
>>> You might try changing
>>> bind_axis("Down", "Up", 0)
>>> to
>>> bind_axis("Up", "Down", 0)
>>>
>> That seems to put the display back in normal (not back tool) mode, but the X 
>> arrow keys are still backwards…
>> -Tom
>>
>

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Re: [Emc-users] A funny thing with PID

[Drew Rogge]

Bet that was exciting!

On 4/15/15 9:17 AM, andy pugh wrote:
> Yesterday the A-axis on my hobbing setup ran away.
> It worked fine in XYZA mode where the A axis is calibrated in degrees
> and with Pgain = 2 Igain = 2
>
> In Hobbing mode where it is calibrate 0-1 revolutions the Pgain is 400
> and the Igain was 2 and it ran away. Setting the Igain to zero brought
> it back under control. The same was true for any non-zero Igain
> between 0.002 to 400. Which rather puzzled me.
>


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Re: [Emc-users] Using a MPG pendant in MDI mode

[Drew Rogge]

Thanks andy.  They're all valid questions. I have found that a MDI move will 
stop short if I switch to Manual before it's done. Also there could be 
contention for the arrow keys. I'll try to see what Touchy does different than 
Axis.

Drew

On 11/6/14, 4:29 PM, andy pugh wrote:
> On 6 November 2014 23:07, Drew Rogge  wrote:
>> Is there an important reason why linuxCNC ignores a pendant while in MDI 
>> mode?
> If you MDI a long move then try to jog, should the system follow the
> move or the jog?
> This might be the logic. I am not sure if it is great logic.
>
> Touchy jogs just fine in the MDI screen if it isn't actually running a
> command, so I suspect what you are seeing is an Axis decision.
> (Axis, as a keyboard-based GUI,  does have the problem, in the MDI
> tab, of trying to work out if you are typing MDI commands / editing
> with the cursor keys, or keyboard shortcuts / arrow jogging.)
>
> I seem to recall that someone had a way to make axis automatically
> switch out of MDI mode when the pendant was used.
>


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[Emc-users] Using a MPG pendant in MDI mode

[Drew Rogge]

Is there an important reason why linuxCNC ignores a pendant while in MDI mode? 
I find that I'm always forgetting to switch back to Manual Control after 
selecting a tool in MDI. Is it possible to have LCNC pay attention to the 
pendant in MDI?

Thanks,
Drew


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Re: [Emc-users] Inverting lathe X axis arrow key

[Drew Rogge]

The tcl/tk code in the page referenced below does swap the arrow keys in 
addition to fixing the preview.

Drew

On 10/28/14, 12:57 PM, andy pugh wrote:
> On 28 October 2014 19:23, Comcast  wrote:
>
>> I'd like to be able to press the up arrow key and have the turret move away 
>> from me without affecting any of the other things that are working 
>> correctly.  Anyone have a solution? Thanks,
> There is something here:
> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?BackToolLathe
>
> I don't speak enough Tcl to know if that also switches the jog
> direction already, but extra stuff in that file should be able to do
> that too.
>


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Re: [Emc-users] connecting logic components inputs without creating signals

[Drew Rogge]

It's just a matter of coming up with a name for each signal.

On 8/16/14, 5:17 PM, Andy Pugh wrote:
>
>> On 17 Aug 2014, at 00:32, Drew Rogge  wrote:
>>
>> Is there a way to associate logic component inputs with pins without using 
>> net and creating signals?
> No. But the signals have zero cost, so I don't understand why you care?
>
>
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[Emc-users] connecting logic components inputs without creating signals

[Drew Rogge]

Is there a way to associate logic component inputs with pins without using net 
and creating signals? The example on the Basic HAL Tutorial creates a signal 
when connecting parport.0.pin-11-in to and2.0.in0:

loadrt and2 count=
addf and2.0 servo-thread

net my-sigin1 and2.0.in0 <= parport.0.pin-11-in
net my-sigin2 and2.0.in1 <= parport.0.pin-12-in
net both-on parport.0.pin-14-out <= and2.0.out

Unless the signals my-sigin1 and 2 are going to be used for debugging they seem 
superfluous.

Drew

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Re: [Emc-users] What's the opposite of a V groove wheel?

[Drew Rogge]

Depending on the width of the groove in the 4040, one of these might work:

http://3d.grabercars.com/?product=11-delrin-roller-with-608-bearing-fits-1515-series-extrusion-from-8020-net-copy
http://3d.grabercars.com/?product=universal-w-delrin-roller-with-bearing

On 05/09/2013 10:08 AM, Gregg Eshelman wrote:
> I'm looking for rollers, wheels or bearings with a pointed edge to run in a 
> slot, but all I find are V groove wheels made to run along a pointed edge 
> rail.
>
> I'm building a XY gantry from 4040 extrusion and some delrin or urethane 
> wheels that can use the slots in the extrusion would be perfect for this 
> design.
>
> It will be low stress because the gantry will just be guiding a self 
> supported 2 joint arm in a 2D plane. Yup, that pattern follower torch I've 
> posted about before.
>
> Surprising to me that these things haven't been CNC retrofitted many times 
> already. Got a computer for free, $74 for three 9 foot pieces of surplus 4040 
> and a bunch of t-nuts, bolts and brackets. There are plates on the arm 
> support post where the pattern holder arms mount, those plates will be ideal 
> for mounting the gantry frame.
>
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Re: [Emc-users] Shizuoka Four Axis on eBay

[Drew Rogge]

It's a punched paper tape reader.

On 03/04/2013 02:52 AM, yann jautard wrote:
> Is it a magnetic tape reader we can see on right side of the control
> cabinet ?
>
>
>
> Le 02/03/2013 00:10, Kirk Wallace a écrit :
>> http://www.ebay.com/itm/251235604390
>>
>> Also here too:
>> http://sacramento.craigslist.org/tls/3640202006.html
>>
>> I already have one and there is no space left, shucks.

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Re: [Emc-users] Shizuoka Four Axis on eBay

[Drew Rogge]

Does yours have the tool changer?

On 3/1/13 3:10 PM, Kirk Wallace wrote:
> http://www.ebay.com/itm/251235604390
>
> Also here too:
> http://sacramento.craigslist.org/tls/3640202006.html
>
> I already have one and there is no space left, shucks.
>

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Re: [Emc-users] Need socket head 6x1mm by 35mm bolts

[Drew Rogge]

Hmmm. I'm in the San Francisco bay area. Hard to get further away from WV than 
that. It did take like 5 days to get them though.

Ahhh... I see I had them shipped to work via UPS. Home delivery is usualy a bit 
more than business :-(
Yep, about $3 more to ship to a residential address vs. commercial. I guess 
that's another plus point to having a job :-)
Drew

On 1/27/13 5:42 PM, Gene Heskett wrote:

>
> Actually about $13.50 from wherever they are to WV, I ordered 20 so I have
> some for the next time.
>
> Thanks Drew.
>
> And that should close out this thread.  Thanks for the offer John Stewart,
> it was/is appreciated.
>
> Cheers, Gene
>

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Re: [Emc-users] Need socket head 6x1mm by 35mm bolts

[Drew Rogge]

Try boltdepot.com:

http://www.boltdepot.com/Product-Details.aspx?product=6543

Not sure what shipping would be but probably < $10. I bought about $45$ 
of smaller metric SS socket head cap screws and shipping was $9.18.

Drew

On 01/27/2013 04:49 PM, Ralph Stirling wrote:
> mcmaster.com is my go-to source for all fasteners.  Cheap, fast shipping, no 
> minimums.
>
> -- Ralph
> 
> From: Gene Heskett [ghesk...@wdtv.com]
> Sent: Sunday, January 27, 2013 4:19 PM
> To: emc-users@lists.sourceforge.net
> Subject: [Emc-users] Need socket head 6x1mm by 35mm bolts
>
> Greetings all;
>
> Does anyone know where I can order just a few, I need 3, of the above bolt
> without a $30 to $50 minimum order?
>
> The bearing blocks for this screw are machined only for socket head bolts,
> and normal 10mm hex heads do not leave room to get a wrench or socket on
> them to properly tighten them.
>
> Locally, there are no socket head metric bolts stocked at all.  None, nada,
> zip.
>
> Its either that, or cut me some bushings out of 1/8" pipe & use 40mm long
> bolts which I have, and get get up to 50mm long at Lowes.  But that would
> be my 2nd choice.
>
> Thanks guys.
>
> Cheers, Gene
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>   soap, ballot, jury, and ammo. Please use in that order."
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Re: [Emc-users] Gluing little balls

[Drew Rogge]

What if you used something that had like an annulus opening that the glue was
pumped through? Imagine two tubes one inside the other and the glue coming out
in the gap between the two. Maybe you could blow air through the center of the
inner tube to keep glue out of it and there fore off the bottom of the marble.

On 10/09/2012 12:28 PM, Stephen Dubovsky wrote:
> On Tue, Oct 9, 2012 at 3:23 PM, John Kasunich  wrote:
>> dip only the lower 1/4 or 1/3 of it into the glue, then immediately
>> place it into the recess in the wood.  Glue never gets on top of
>> the marble, thus never needs removed.
>
> The marbles partly protrude though the bottom of the board.  Can't dip
> the marbles.
>
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Re: [Emc-users] OT: 3D Printer Mods?

[Drew Rogge]

Very nice Ed. And thanks for including the OpenSCAD source code. Will prove an
interesting read.

Drew

On 06/01/2012 04:31 AM, Ed Nisley wrote:
> On Wed, 2012-05-30 at 19:29 +0200, Roland Jollivet wrote:
>> The thing is, what do you do with these parts?
>
> Some examples of stuff I've designed&  build&  used...
>
> A case for a GPS+voice amateur radio circuit:
> http://softsolder.com/2012/04/13/wouxun-kg-uv3d-gps-interface-functional-case/

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Re: [Emc-users] OT -- Ethernet thermometer?

[Drew Rogge]

The link points to a switch not a router. Not sure how that's going to help.

For an ethernet thermometer you could try these:

http://shop.moderndevice.com/products/rbbb-kit
http://shop.moderndevice.com/products/jeelabs-ether-card

Total of about $38. Still not cheap though.

For the DIY folks there's this which looks promising:

http://www.instructables.com/id/A-credit-card-sized-Ethernet-Arduino-compatable-co/

On 07/22/2011 12:15 PM, Igor Chudov wrote:
> El cheapo ethernet routers cost $9.99:
>
>
> http://www.newegg.com/Product/Product.aspx?Item=N82E16833166034
>
> I believe that a cheap Ethernet thermometer would cost roughly as much, if
> someone wanted to produce it.
>
> i
>
>
> On Fri, Jul 22, 2011 at 2:10 PM, Jack Coats  wrote:
>
>> On Fri, Jul 22, 2011 at 1:54 PM, Kirk Wallace
>>   wrote:
>>> On Fri, 2011-07-22 at 13:36 -0500, Jack Coats wrote:
>>> ... snip
 If you can hack a router and reprogram it to use something like the
>> DallasSemi
 onwire devices if you want it to really talk eternet or wifi.

 I am guessing the WRT or Tomato software would be fairly easy to do.
>>>
>>> I need to monitor compost pile temperature and thought the above might
>>> work. Wireless with a solar panel (and irrigation control) would be good
>>> too. Hacking a GPIO pin or two, or a serial port might take some effort
>>> so its lower on my vast todo list. I'll be interested if someone comes
>>> up with something.
>>>
>>> --
>>> Kirk Wallace
>>> http://www.wallacecompany.com/machine_shop/
>>> http://www.wallacecompany.com/E45/index.html
>>
>> I have had a similar need.  Need to monitor internal temperature of hay
>> bales
>> that were put up a bit to wet.  They heat up and have been known to
>> combust.
>> Before stacking bales for storage, we have to let them cool down.  Finding
>> out when it is ready to stack is important here.  Don't want to let them
>> out
>> to long.  Even a wifi that I could read 10' away would help a lot.


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[Emc-users] Most recent version of ubunto that's an easy build

[Drew Rogge]

I'm going to be setting up an EMC machine but unfortunately the Live CD
based on Hardy Heron is not recent enough for what I want. I assume that
I'll need to obtain the EMC and rtai sources and compile them. Does
anyone know what the latest release of ubunto that will easily support
EMC and rtai? I'd like to do this with a minimum of fiddling around with
packages and such.

Thanks,
Drew

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Re: [Emc-users] home made spindle

[Drew Rogge]

I haven't been following this thread so please excuse me if this has
already been mentioned. You might want to look into using the spindle
from a "spin indexer" like this:



Not sure how concentric the collet taper is to the OD.

Drew

Andy Pugh wrote:
> On 28 January 2010 16:26, Kirk Wallace  wrote:
> 
>>> (I think that other than the location of the thread R8 and 5C are the same)
>> Just in case:
>>
>> http://www.dunhamtool.com/5c_collet.html
>> http://www.dunhamtool.com/r8_collet.html
> 
> Aha, so not at all the same then. And so that Littlemachineshop
> spindle is no good either.
> 

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Re: [Emc-users] Micro-controllers

[Drew Rogge]

Here's a version of the arduino with a different form factor:



It's about half the price of a real arduino, laid out to work with
solderless breadboards and comes with and without a FTDI USB chip.
If you go for the version without the USB chip the same place sells a
USB cable with the chip built into it.

Drew

Sven Wesley wrote:
> http://arduino.cc
> 
> The only thing you need is an USB cable.
> A lot of memory, a bunch of timers etc and pretty fast.
> The card is open sourced. Buy it, build it or get a clone.
> C subset for programming.
> When your finished with your project, get a Mini or Nano and make it
> supersmall.
> Besides that, it's cheap.
> 
> I love it, I even brought one on the vacation. :)
> 
> A lot of open projects, examples and good documentation. Have a look at
> http://www.freeduino.org/ too.
> 
> Regards,
> Sven
> 

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Re: [Emc-users] emc2.3.0beta2

[Drew Rogge]

You could cut some shallow grooves in the bottom of the tailstock where
it sits on the ways and then drill a hole which intersects them. Attach an
air fitting to the other end of the hole. When you want to move the
tailstock just pump a bit of air in and instant air bearing. Of course
you'll probable want appropriate filters and such to keep the grit out.

Drew 

Leslie Newell wrote:
> A chain block would be excessive. I can move the tailstock by hand but 
> it is a bit of a shove sometimes and I am lazy.
> 
> I can't see anything wrong with using the saddle. It takes far less 
> force to move the tailstock than when taking a decent cut. The Z axis 
> has enough power to move the tailstock even if it is locked down as I 
> discovered by accident once when I misjudged a move.
> 
> Actually I have been thinking of fitting a catch to lock the tailstock 
> to the saddle. That way I can easily move the tailstock in both 
> directions and it would also allow cnc controlled drilling.
> 
> Les
> 
> 

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Re: [Emc-users] OT: Tape to ASCII

[Drew Rogge]

Could it be that you need to mask the parity bit off of the tape input?
Is there any way you can tell what characters aren't be properly presented?

Kirk Wallace wrote:
> Please let me know if this is too far off topic.
> 
> I have a friend with a couple of 80's vintage Mori Seiki's and a
> Matsuura, all with Yasnac controls. He wants to move g-code files
> through the serial ports with a laptop. I made a cable, set the serial
> port parameters and was able to get characters to a terminal emulator on
> the laptop. The problem is that some of the characters are not presented
> on the screen properly. My guess is that what is coming across is a tape
> code and the terminal needs ASCII. Is my guess correct? Will I need to
> buy BTR software or is there another way to save and load g-code through
> the controller serial ports?
> 
> Kirk
> http://www.wallacecompany.com/machine_shop/

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Re: [Emc-users] internet connection]

[Drew Rogge]

The way I understood it is that you can shut off a jet engine. You can't
shut off a rocket. Once lit they'll go until they run out of propellant.

Drew

Dave Houghton wrote:
> 
> Gee you are you close, but no cigar, not really where the oxidizer comes
> from. A jet engine could carry it's own oxygen supply. You are so close -
> more simple. Jet engines always have this; rocket engines never.
> 
> Dave 
> 

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Re: [Emc-users] nc programming application

[Drew Rogge]

Add a '-lm' to the gcc line and it should link and run.

gcc -o krisncv_9 krisncv_9.c -lm

The compiler still gives a bunch of warnings though.

Drew

Stuart Stevenson wrote:
> Gentlemen,
> Here is a 2 1/2 axis programming application we use to a limited
> extent in our shop. Use it if you wish. As it is written it compiles
> and runs in windows. I have been trying to compile it to use in EMC2.
> I get errors and no file to run.
> 
> krisncv_9.c:350:18: warning: multi-character character constant
> krisncv_9.c: In function 'Toolnumber':
> krisncv_9.c:350: warning: overflow in implicit constant conversion
> krisncv_9.c:374:15: warning: multi-character character constant
> krisncv_9.c: In function 'Next':
> krisncv_9.c:374: warning: overflow in implicit constant conversion
> krisncv_9.c:392:18: warning: multi-character character constant
> krisncv_9.c: In function 'Diametertool':
> krisncv_9.c:392: warning: overflow in implicit constant conversion
> krisncv_9.c:411:21: warning: multi-character character constant
> krisncv_9.c: In function 'Lengthtool':
> krisncv_9.c:411: warning: overflow in implicit constant conversion
> krisncv_9.c:734:18: warning: multi-character character constant
> krisncv_9.c: In function 'Holes':
> krisncv_9.c:734: warning: overflow in implicit constant conversion
> krisncv_9.c:996:16: warning: multi-character character constant
> krisncv_9.c: In function 'Xholes':
> krisncv_9.c:996: warning: overflow in implicit constant conversion
> krisncv_9.c:1014:16: warning: multi-character character constant
> krisncv_9.c: In function 'Yholes':
> krisncv_9.c:1014: warning: overflow in implicit constant conversion
> /tmp/ccHtazVV.o: In function
> `Compute_positions':krisncv_9.c:(.text+0x2114): undefined reference to
> `cos'
> :krisncv_9.c:(.text+0x2147): undefined reference to `sin'
> /tmp/ccHtazVV.o: In function
> `Kellerradius':krisncv_9.c:(.text+0x5e64): undefined reference to
> `atan'
> :krisncv_9.c:(.text+0x5f95): undefined reference to `sin'
> :krisncv_9.c:(.text+0x5fe2): undefined reference to `cos'
> collect2: ld returned 1 exit status
> 
> I have placed the files on www.mpm1.com:8080 under the kris
> directory. Would someone get these files, correct them and
> educate me as to why gcc will not compile them?
> thanks
> Stuart
> 
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Re: [Emc-users] EMC2 backlash compensation

[Drew Rogge]

Thanks Gene. I hit a roadblock this weekend with the machine I wanted
to use for EMC. It's an IBM ZPro, 2.88Ghz and should work. The machine
has SCSI drives in it and that may be the problem. So far it's not a
problem with EMC, I couldn't even get the Ubunto 6.06 Live CD to
install. I may try picking up a PCI ATA disk drive today if I can't
find any info here at work.

Drew

Gene Heskett wrote:
> Its startup curve is a bit steep.  When you install, make sure you also 
> install an IRC client, there is a continuous presence of the developers on 
> freenode, /join #emc.  You will usually get good answers to newbee questions 
> in a minute or so.  For the initial config for your machine, there are 
> instructions in the wiki at linuxcnc.org that are pretty well spot on.
> 

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Re: [Emc-users] EMC2 backlash compensation

[Drew Rogge]

Thanks for the info Gene. Looks like I'll give installing
EMC a go this weekend.

Drew

Gene Heskett wrote:
> On Friday 14 December 2007, Drew Rogge wrote:
> I'm not a coder, just a user so I could be wrong here.
> 
> I believe emc now uses the MAXACCEL & MAXVEL (I think that's the correct 
> names) variables to profile the backlash moves since version 2.0.0 I believe, 
> and I have used backlash settings up to 17 thou in my Z axis settings without 
> a problem other than the head still rocks and a curve cut that involves a 
> direction reversal of the Z at the top of the curve still leaves a visible 
> artifact in the finish.  I've since rebuilt my Z drive from scratch and now 
> use about 2 thou of backlash comp.  The drive is now in front of the post and 
> much much stiffer.
> 
> IMO EMC is doing a great job of handling that now.  I recently cut some 
> pockets for ball bearings that took some tweeking of the x & y backlash 
> settings I had previously guessed at from watching a dial indicator, and by 
> the time I reached the finished size of the pocket, the error from a perfect 
> circle was not detectable by my cheap dial indicators, one mechanical, one 
> digital.  Driving the bearings in and back out to polish the high spots 
> generally showed a pretty random contact pattern, and my new z axis drive is 
> happy, that's where the bearing pockets were going to be used.
> 
> Yeah I know, a micromill is a sows ear, but its what I could afford at the 
> time.  It doesn't much resemble the catalog picture now. :)
> 

-- 
Drew Rogge
[EMAIL PROTECTED]

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[Emc-users] EMC2 backlash compensation

[Drew Rogge]

I've been using TurboCNC off an on for a few years now and
last night I ran into a problem with my gecko servo driver
faulting out. I think the problem is that I was running a
low feedrate, 2.25 IPM, and have a lot of backlash comp-
ensation, .005", configured. I'm pretty sure that the
drive was faulting when the X axis switched feed directions
and TCNC would issue a bunch of pulses to take out the back-
lash. I seem to recall that TCNC doesn't use any kind of an
acceleration curve or anything for these moves.

So any way, do people feel that EMC2 does a good job of
dealing with large amounts of backlash? Has anyone had a
problem with drives faulting during backlash comp?

Thanks,
Drew

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Drew Rogge
[EMAIL PROTECTED]

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