[Emc-users] How to treat rusted linear rails?

Personally, I would use an electrolytic process with carbon and a power source. Any other method would only further damage the rails. You're 'plating' onto the rails, so no metal is lost. The rust gets reduced back to Fe and can be brushed off. Roland On Mon, 11 Mar 2024 at 09:47, Viesturs

[Emc-users] Semi OT: Variable speed DC drive for Fanuc brushed DC spindle drive

I think you'd be aiming for a SCR drive, bought or self-made. They're simple and lower cost. Roland On Sat, 10 Feb 2024 at 00:07, Leonardo Marsaglia wrote: > Hello guys, I hope you're doing well > > We just purchased a Mori Seiki SL3 lathe that's going to be > retrofitted with LCNC because it

[Emc-users] Capto

And here is a Capto profile being ground; https://www.youtube.com/watch?v=ALRAiiMxTnk Roland On Tue, 2 Jan 2024 at 18:02, gene heskett wrote: > On 1/2/24 08:17, Adam McLeod wrote: > > Fortunately, Sandvik standardized the Capto shank via ISO 26623. It is > > called a "Polygonal taper

[Emc-users] OT: interesting mechanics

I don't know if there is a use for such a thing, but it is an odd arrangement; https://www.youtube.com/watch?v=9xmLpHZG5gI Roland ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

[Emc-users] OT Fanuc ot-c cpu power supply A16B-1212-0950

If you can obtain/borrow any thermal imaging device, then run with the PSU with covers off and check every 5min. You should identify a cap-thermal problem. On Sat, 2 Dec 2023 at 21:14, John Dammeyer wrote: > > From: Chris Albertson [mailto:albertson.ch...@gmail.com] > > > > If it is a simple

[Emc-users] OT: novel 3+ n axes

Interesting, and it looks rigid enough for real work.. https://www.youtube.com/watch?v=4r4_uo6ZrAE https://www.youtube.com/watch?v=ztW4JIbLSMs ___ Emc-users mailing list Emc-users@lists.sourceforge.net

[Emc-users] OT: thread cutting

I thought this is an interesting way of doing a 'peck' in thread turning. More relevant because it's a deep square thread. https://www.youtube.com/shorts/jT_4KKKCTbY Roland ___ Emc-users mailing list Emc-users@lists.sourceforge.net

[Emc-users] new tool table in linuxcnc master

Just wondering, why would there be limit of 50? Why not just make it 255? (surely the software doesn't care?) On Mon, 2 Oct 2023 at 08:47, andrew beck wrote: > hey guys > > i see there is a new tool table in linuxcnc now. looks like it has great > potential > >

[Emc-users] [Emc-developers] Trajectory planner shortcomings

https://www.youtube.com/watch?v=KHB5ecOgr2o I think the machine runs off a Beaglebone board. Roland On Thu, 6 Jul 2023 at 18:48, Chris Albertson wrote: > > > > On Jul 6, 2023, at 9:22 AM, Roland Jollivet > wrote: > > > > The small 4-axis CNC machine,'Pocket Nc' us

[Emc-users] [Emc-developers] Trajectory planner shortcomings

The small 4-axis CNC machine,'Pocket Nc' uses LinuxCNC as far as I can tell, and it seems to run just fine. Or does it? Roland On Tue, 4 Jul 2023 at 20:16, andy pugh wrote: > On Tue, 4 Jul 2023 at 18:34, Marius wrote: > > > The problem seems to be that our trajectory planner lack the

[Emc-users] Drilling holes in the back of a stepper motor

You have such a large flat surface area there. Design an encoder mount plate of similar size where the end result is also has a flat surface. Rough and clean the back of the motor up, then use a decent polyurethane adhesive to bond it on. During the setup you could use a jig to keep it concentric

[Emc-users] Medium voltage BLDC motor

Actually, many of the sewing machine motors are now BLDC, with a controller containing one of those power bricks. Here's one of the motors

[Emc-users] OT: Air cooled router spindle problem

A break in one of the wires would cause it be on two phases, vibrate and not run. Definitely intermittent as it flexes. A piece of cable is so cheap compared to another VFD. Just strap another cable onto the cable chain and run it for a few hours. If it doesn't fail, it's not conclusive, but if it

[Emc-users] Linuxcnc HAL and AI

Since most ?? of us have some difficulty with configuring the HAL script, I thought maybe ChatGPT could help. So this is obviously very generic, but one can easily 'add' new parameters/constraints to the query. By the way, I have no clue if it is correct or not. Maybe someone could try

[Emc-users] custom m codes tutorial and cnc lathe bar pulling

I do like the 'bar pusher' as opposed to a puller... https://www.youtube.com/watch?v=1vumk-ZvnjU Roland On Sun, 29 Jan 2023 at 12:21, andrew beck wrote: > Thanks gene > > Hey you might know how to loop a gcode file > > I want to loop a gcode file 50 times. > > Ideally using m98 and m99 > But

[Emc-users] OT: Shapr3D

I wondered if anyone is using this package... I've just become aware of it. Free with limited functionality, or $25/m paid.. https://www.youtube.com/watch?v=oCo90ILLX5U https://www.shapr3d.com/pricing Roland ___ Emc-users mailing list

[Emc-users] Fusion 360

I've tried F360 for code on a small lathe and find it quite painful to get the toolpath usable. It often wants to part off before completing the turn, or just doesn't machine optimally. Possibly because I mostly machine with a grooving tool, so you don't need a tool-change. I have to mess with

[Emc-users] OT How to make fine splines

: > On Tue, 25 Oct 2022 at 09:31, Roland Jollivet > wrote: > > > > If you have a CNC lathe, you could do this; > > > > https://www.youtube.com/watch?v=TW6QPl8Oy7g > > It could be done with a mill too, with a non-rotating fixture on the > head. But tha

[Emc-users] OT How to make fine splines

If you have a CNC lathe, you could do this; https://www.youtube.com/watch?v=TW6QPl8Oy7g On Mon, 24 Oct 2022 at 16:32, John Figie wrote: > I have a 1978 Honda XL175 I want to get running again. The Kick start shaft > is broken, a common problem on this bike. Replacements are hard to find and

[Emc-users] stmbl servo drives - want to buy...

> Now. Why is it not available? Two reasons. The key thing about the > STMBL for 3 phase AC servos was that it used single driver for all three > windings. Probably originally designed for washing machines. It was > discontinued. A different one with slightly lower power was available. >

[Emc-users] Matrix Wiring

You don't say how often you need to change the jumpers, or how compact you need this to be, or how easily they need to be changed. But, if you have two pcbs that you can move far apart, then load one side with pins, then bring them together, you could use something like this;

[Emc-users] Clausing NC Spindle drive belt tension and noise.

If the noise is from the belt whipping, then lightly press a rod, or two, on the back of the belt to see the effect on the noise. Be careful... So if it helps, you could add two 50mm bearinged idlers on the outside of the belt. Maybe use those two holes I see to mount. On Sun, 3 Jul 2022 at

[Emc-users] spindle problem

Presumably your machine is different to mine.. I have a BT30 spindle and it had broken washers when I got the machine. I was very relieved to simply loosen/remove two locking nuts at the top of the drawbar and the complete stack simply dropped out the bottom. On Mon, 27 Jun 2022 at 18:04, dave

[Emc-users] spindle problem

Surely you could hire a buff mechanic from down the road and totally supervise/instruct him what to do? On Sun, 26 Jun 2022 at 16:45, dave engvall wrote: > Hi, > My Mazak V5 has been down for a few years. First for brushes on the > spindle motor and then a much more serious broken belleville

[Emc-users] Hight Frequency VFD

> The drive had been acting up for the past couple months. When the machine > would be first powered on (throwing disconnect) the drive would not "turn > on" right away "Power" LED on the front of the drive would not light up, > even though the drive had power on all 3 phases. If the machine was

[Emc-users] custom | stock bearing nut

On Tue, 5 Apr 2022 at 18:47, dave engvall wrote: > Hi all, > I have a pair of ball screws: THK KX 71227 A > These are new but older and as far as I can tell not on the THK site. > They are threaded on one end to retain a bearing. > M15 x 0.8 or close. Does anyone know of a bearing nut that would

[Emc-users] Graceful pi shutdown, power off

On Wed, 16 Feb 2022 at 16:17, Thaddeus Waldner wrote: > > Just use a simple 10A relay with 5V coil > > As a latch, you press a button to power up, ie power the coil, then the > > same line gets dropped by the Pi to power off.. > > How does the pi drop the 5v line after shutting down? The

[Emc-users] Graceful pi shutdown, power off

Just use a simple 10A relay with 5V coil As a latch, you press a button to power up, ie power the coil, then the same line gets dropped by the Pi to power off.. https://www.digikey.co.za/en/products/detail/omron-electronics-inc-emc-div/G5Q-1A4-DC5/1815721 On Wed, 16 Feb 2022 at 00:00, Thaddeus

[Emc-users] miniature taper-lock type pulleys

On Thu, 27 Jan 2022 at 06:49, Ralph Stirling wrote: > I had some problems today with a small XL timing > pulley slipping on a NEMA17 stepper shaft due to > the set screw loosening after running for long > periods (multiple days). I drilled and tapped a > second set screw hole, and I can

[Emc-users] ER-32 Collet Wrench

On Wed, 12 Jan 2022 at 14:43, Stuart Stevenson wrote: > The length of the handle is purposely short as most people will use way too > much torque to tighten the lock nut. Exceeding the chuck manufacturer's > torque specification will not help in the holding capability and will > result in less

[Emc-users] ER-32 Collet Wrench

On Wed, 12 Jan 2022 at 10:50, John Dammeyer wrote: > So my Collet chuck arrived a week or so ago. Today the ER-32 collet set > arrived. I no longer have an excuse for not completing my 4th axis driven > by a real harmonic drive. (Well it is raining and can't cast). So I have > drawn up the

[Emc-users] Spindle positioning.

You probably don't need more than 1 bar on the lifting air cylinder, up or down. No need to force it down. So let it down, then if you can give the spindle a 1RPM burst to let the nut slip over. And have a switch on driver Z to know if it's down over the nut. You could also stop the spindle and

[Emc-users] Closed loop control of air motors.

It's not what you asked, but what about a centrifugal clutch/limiter? Above say 200RPM it could swing outwards and lock, only releasing again once the torque is removed. On Sun, 21 Nov 2021 at 09:45, John Dammeyer wrote: > Has anyone ever tried any sort of closed loop control of an air motor

[Emc-users] USB to Ethernet

I might be wrong, but I'd think such a device would be resource heavy. Less hardware means more gets done is software.. On Tue, 16 Nov 2021 at 09:21, John Dammeyer wrote: > Would this type of USB 3.0 to Ethernet work with Ethernet supported MESA > boards? >

[Emc-users] Power Draw Bar

On a BT30 spindle; A button the front of the sindle, drawbar is depressed only as long as you hold the button in. On Sun, 14 Nov 2021 at 08:03, John Dammeyer wrote: > Quick question. > > On commercial machines that have buttons to load or unload the tool by > actuating the drawbar how are the

[Emc-users] Prox sensors and wiring

I think the problem with proxies is that any chips in the probe path is going to affect this distance, quite lilely flood coolant situations. The mechanical switches on CNC machines however, have a slope on the switch and are really difficult to press in with your finger. This makes sure that any

[Emc-users] Panasonic serial encoder interface

I knew I had something on file... Try this ; Everyone should download it just

[Emc-users] was; Shortening motor shafts, now account

Hi Andy I'm also on gmail and got this message. Never seen it before; Roland ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

[Emc-users] Replacing a handle.

On Wed, 13 Oct 2021 at 05:36, John Dammeyer wrote: > This has nothing to do with LCNC specifically. Really more a how to use > LCNC. > > The attached picture is of a broken tripod crank handle that clearly was a > casting. > > I can't figure out how I'd hold the raw stock to machine it. The

[Emc-users] splicing teeny wires

Hi Gene I don't know if you know about these splicers. Mostly used for telephone wire. You can see what's going on, and any pliers will do the trick, but they're not 'in-line' https://www.amazon.com/Connector-Uvital-Waterproof-Gel-Filled-Connectors/dp/B07Z7NY6BN On Fri, 20 Aug 2021 at 15:54,

[Emc-users] Something went wrong.

I would send the .dxf to the laser shop and collect the cut-and-bent parts in a few days. Some parts are not worth machining when there's a far easier practical solution. Roland On Tue, 3 Aug 2021 at 23:31, John Dammeyer wrote: > That's a good suggestion John F. Thanks. I did do some more

[Emc-users] Ethercat returning message disappear

No I don't but you might find this interesting. It was in an email I got two days ago. The software is downloadable; https://www.st.com/en/evaluation-tools/steval-eth001v1.html?ecmp=tt21493_gl_enews_jun2021=stmDM44500=438016236=mrX5prLpL0WLPr+vcjBGHEiEOnoACPSG9a4XfANkxEI= On Sun, 11 Jul 2021

[Emc-users] Machining question

I've worked with Fanuc robots,and was amazed to find that none of the cables were shielded. The robot, with motors and encoders, is linked to the control box with a 6m cable. All unshielded. Ok, the power and signal cables are separate, but once installed, all extra cable is looped together next

[Emc-users] Running 440V 3PH 2 speed motor off 220V 3PH or 1PH?

y, June 17, 2021, 3:31:57 AM MDT, Peter Blodow < > p.blo...@dreki.de> wrote: > > Am 17.06.2021 um 07:20 schrieb Roland Jollivet: > > ... > > I don't know if you can use a 110V:24V transformer in reverse, or whether > > you

[Emc-users] Running 440V 3PH 2 speed motor off 220V 3PH or 1PH?

If you have some transformers lying around you could stack the secondaries to get 440V They don't need to be step-up, just sum the secondaries. You need to have them all in phase obviously. Then use a small, single phase 440V VFD Most VFD's under 1Hp accept single or 3ph, but I don't know about

[Emc-users] Spindle Control

On Tue, 15 Jun 2021 at 11:55, andy pugh wrote: > On Tue, 15 Jun 2021 at 10:33, Gregg Eshelman via Emc-users > wrote: > > > > Look up lost PLA casting. > > Though the drawback with that is that you only get one shot at it. > Which often makes me wonder why guys aren't CNC machining the moulds

[Emc-users] CUI devices

Hi I was wondering what experience people have had with the CUI encoders. Mostly looking at the costs. The AMT13 series comes as a kit with all the adapters, at $33 But it's supplied with no female connector. You might only realise this when you open the box, after paying for shipping, duties

Re: [Emc-users] OT: About a chat here on vacuum table ideas

A friend was complaining about the need for 6kW vacuum system on a large table and this got me thinking Another way is to divide the table up into squares, grid wise, and have a .. separate.. vacuum motor for each section. The motor is mounted under the table at the bottom of each 'box'. You

[Emc-users] OT: Fanuc wrist

Interesting, never thought they'd use a gear with so little engagement; https://www.youtube.com/watch?v=iblqrfu5wdw (note, it's immersed in oil) ___ Emc-users mailing list Emc-users@lists.sourceforge.net

[Emc-users] homing off glass scale

On Sun, 23 May 2021 at 03:31, Jon Elson wrote: > On 05/22/2021 07:12 PM, dave engvall wrote: > > > >> Has anyone tried homing off the reference channel on a > >> glass scale? There is information on the web indicating > >> that at least some of the chinese glass > >> scales mask and compare the

[Emc-users] Can't find the PP. Where is lspci or equiv ?

Just enter the Bios on startup... On Tue, 4 May 2021 at 21:05, Ed wrote: > Updating an old retrofit that uses step servos, Gecko 320's. I tried > using lspci to find the ports (onboard and an addon ) and no such animal > as lspci. Is there another good way to find the ports? > > > Some

[Emc-users] Worn Ball Screw?

Dalton, Ohio 44618 > Phone: (330)828-2105ext. 2031 > > -Original Message----- > From: Roland Jollivet > Sent: Tuesday, April 13, 2021 11:23 AM > To: Enhanced Machine Controller (EMC) > Subject: [Emc-users] Worn Ball Screw? > > [EXTERNAL EMAIL] Be sure links are s

[Emc-users] Worn Ball Screw?

Ha ha, oops, they're in the UK On Tue, 13 Apr 2021 at 17:22, Roland Jollivet wrote: > > Did you try PGM Reball (saw them on an old video I have) > > > On Tue, 13 Apr 2021 at 14:38, Todd Zuercher wrote: > >> Yes, near the limit switch, outside of the normal travel ar

[Emc-users] Worn Ball Screw?

Did you try PGM Reball (saw them on an old video I have) On Tue, 13 Apr 2021 at 14:38, Todd Zuercher wrote: > Yes, near the limit switch, outside of the normal travel area, I can not > measure any backlash. That pretty much points the finger squarely at wear > on the screw as the main

[Emc-users] Spindle rps and index

On Fri, 19 Mar 2021 at 11:58, andy pugh wrote: > On Fri, 19 Mar 2021 at 01:46, John Dammeyer > wrote: > > > I take it then that you can't actually move the spindle to the index > position unless you have some sort of control beyond velocity? >

[Emc-users] OT: pcb milling

Has anyone tried this for holding down PCB's when milling? https://www.materialsampleshop.com/products/micro-suction-tape Roland ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

[Emc-users] Tandem home switches on single axis

Lucky the proxy is PNP Wire the proxy in series with the switch - the proxy will pull the line UP - the proxy Only has power when the switch is closed - so the home position is only valid if the switch is closed AND the proxy is active AND the proxy is interrupted. Then the line will get pulled

[Emc-users] Sheet metal operations.

To throw in my two cents; I build a lot of prototypes, and get my parts laser cut, but a CNC turret punch would be a great have. I've toyed with the idea a lot and came up with this strategy; - machine designed to up to 3mm sheet metal only, maybe half a full sheet (1.2 x 1.2m) - build a high

[Emc-users] Small spring, very simple flat

One way is to use Beryllium copper. If you have a local PCB supplier, they will etch the parts from a .dxf They normally keep stock since the material is used as battery springs. Otherwise, a laser cutter who does saw blades might have material. There's also steel binding strap used in crate

[Emc-users] I wonder if I can fix it?

On Thu, 7 Jan 2021 at 01:35, Gregg Eshelman via Emc-users < emc-users@lists.sourceforge.net> wrote: > I wonder if a replacement cup spline with an elastomeric part would work? > Make teeth that interlock at the side of the spline wall and the back > plate, with a thin filler of high durometer

[Emc-users] I wonder if I can fix it?

On Wed, 6 Jan 2021 at 17:22, andy pugh wrote: > On Wed, 6 Jan 2021 at 14:52, Ralph Stirling > wrote: > > > > Along those lines, could curved "teeth" like cycloidal reducers be used > with a flex element? > > Here's something I designed earlier :-) > > https://youtu.be/VrvwlPxRhKU > > I did a

[Emc-users] I wonder if I can fix it?

I've been pondering this for a while now, wondering if there's a design shape that has been missed. In terms of a fresh design, things that could be done; - increase the length of the cup - put cutouts in strategic places - use a cone rather than a cup - make the cup in more than one piece

[Emc-users] Gecko G213V failed yet again.

Solder a bridging wire under the pcb directly to the output Fet or whatever. And/or maybe solder wires from the posts to an off-board connector so there are no connectors on the board itself. On Tue, 8 Dec 2020 at 06:39, John Dammeyer wrote: > The attached photo is of the last time but this

[Emc-users] OT: probing query_01

Hi All I'm wondering about probing, maybe someone can shed light; I want to make a touch probe, and looking at the classic Renishaw tripod style, an obvious limitation is the lobing error. Is this appreciable (<5um?) or is it dwarfed by taper-mounting and spindle error? So I'm wondering why M19

[Emc-users] Cutting fluid

The smell of many coolants make me feel nauseous, and that stuff surely gets to the liver if on your skin Have a look at this stuff. I haven't used it myself but intend to. https://www.mmsonline.com/products/clear-metalworking-fluid-engineered-for-easier-part-cleaning On Wed, 21 Oct 2020 at

[Emc-users] OT: Fanuc 0M setup

way over $200/hr > to make changes. > Dave > > On 10/20/2020 10:49 AM, Jon Elson wrote: > > On 10/20/2020 02:29 AM, Roland Jollivet wrote: > >> Also, if I want to ditch the controller at a later stage, are the Fanuc > >> servo drives interfaceable to EMC? >

[Emc-users] OT: Fanuc 0M setup

Graham Dunn Inc. > 630 Henry Street > Dalton, Ohio 44618 > Phone: (330)828-2105ext. 2031 > > -Original Message- > From: Roland Jollivet > Sent: Monday, October 19, 2020 3:45 AM > To: Enhanced Machine Controller (EMC) > Subject: [Emc-users] OT: Fanuc 0M setup

[Emc-users] OT: Fanuc 0M setup

Hi All I'm looking at getting a small VMC that has a Fanuc 0M controller on it. Much to my chagrin, I found out that there is no I/O on the machine. (for fixtures, probes etc.) I was expecting a Harting plug on the side. So any functionality has to be 'enabled' and hardware added and brought

[Emc-users] driver for a DC motor for a BS-1.

Maybe this is good for you, if available locally; https://www.olimex.com/Products/Robot-CNC-Parts/MotorDrivers/BB-VNH3SP30/open-source-hardware On Wed, 14 Oct 2020 at 22:42, Gene Heskett wrote: > After it finally was delivered, testing looks good but now I need a > controller, smaller and

[Emc-users] Linux CAM.

The problem with all the lower end CAM's is that they don't support Rest machining, which makes them fairly useless if you're machining steel. DeskProto didn't either as far as I remember. Now it does, but don't know how good it is. Roland On Tue, 22 Sep 2020 at 13:59, andy pugh wrote: >

[Emc-users] OT: Synchronised motion using RS485/CAN bus motors

Have you looked at the manual? These drives are used on real machines... On Wed, 19 Aug 2020 at 22:36, N wrote: > > Have a read on the manuals for the Yaskawa Legend 01 or 04 > > > > It uses serial at 9600 !!! to command the drive. (RS232 serial, or > > ethernet interface) > > The trick it

[Emc-users] OT: Synchronised motion using RS485/CAN bus motors

Have a read on the manuals for the Yaskawa Legend 01 or 04 It uses serial at 9600 !!! to command the drive. (RS232 serial, or ethernet interface) The trick it uses is to send only new, relevant data, and not fixed packets Roland On Wed, 19 Aug 2020 at 01:31, Frank Tkalcevic wrote: > An off

[Emc-users] Quiet toothed belts.

For that size I would use an HTD 5M. Maybe a 8M (8mm pitch) A benefit too, us that most vehicles use this dimension for the cambelts, so you can easily get belts. And even scrapped pulleys that are still perfectly good. Pulleys are expensive and you can get a scrapped pulley for < $1 Then

[Emc-users] off topic: pwm with a stepper driver/motor

I had a friend that had a motorised telescope. It had a DC motor, with a very high reduction ratio. I think one would see fluctuations with a stepper motor. Also, I wouldn't use a belt at all. Drive a smooth roller and use a friction drive against a large disc. This also allows you to manually

[Emc-users] ghesk...@shentel.net

Hi Gene I don't know if you got this on the list, so I'm sending it directly to you too. Here

[Emc-users] More cbn headaches

See here ; Pferd will usually have what you need.

[Emc-users] Maths (wow)

When I was working with a Fanuc robot, and if in a tight space, I would often get a 'singularity' error. Two axes are too parallel to each other. Then you have to fiddle with the program to get out of the paradox. Thing is, in all of my life of picking up things, my arm has never frozen from a

[Emc-users] dxf2gcode

my 2 cents.. When saving the .dxf, try saving as a R14 format. This is easily read by most programs. The newer versions are full of headers that may cause problems. The files are in ASCII so you can examine what's there and compare versions. I watched the video. Interesting. It looks like a

[Emc-users] Universal spindle speed control for $7

I was going to suggest this at the start of the thread, but I thought it would be considered too Heath Robinson.. On Thu, 18 Jun 2020 at 20:40, Chris Albertson wrote: > I'm making good progress on my 3D printed CNC conversion. I found a way to > 3D print a spindle controller that should work

[Emc-users] Cheaper than normal FHA-25B

I've been thinking about 4th axes; While motorised reduction drives are readily available, the issue is obviously backlash. One way to make a zero backlash drive is to use two identical gearbox/drives. Place them at opposite ends of the axis, and pit them against each other by a few encoder

[Emc-users] Hal file naming conventions

Just add a comment at the top referencing a text file where you have it all described? On Thu, 14 May 2020 at 06:42, David Berndt wrote: > Wondering if anyone cares to share with me a useful naming convention for > your signals? Do you also use the name parameters to name your components > or

[Emc-users] Encoder reset on homing to index

No-one has mentioned the mechanics of the system.. (or have they?) What is the mechanical coupling like between the stepper and the linear scale. Obviously it's most susceptible to backlash and belt stretch. If the stepper is holding fast, how much linear deviation can you get if you try move the

[Emc-users] Who knows about LASIMM ?

On Fri, 27 Mar 2020 at 11:23, Valerio Bellizzomi wrote: > It is a phenomenal machine > > http://www.lasimm.eu/ > > > I don't get it... All those fancy robots and all they can

[Emc-users] PMSM, STMBL Drive

On Sat, 21 Mar 2020 at 18:32, Nicklas Karlsson wrote: > > *rene-dev * commented on May 7, 2018 > > > > > > IRAM256-1567A2 or IRAM256-1067A2 can be used as replacement, but they > > only have 15 and

[Emc-users] where can I find

Hi Gene Why don't you; - take a 6mm or 1/4in or similar bright rod. Maybe 20mm long; - mount in the lathe and use the 1mm drill to make a hole - go to the milling mahine - place a 6mm centre drill bit in a 6mm collet - start a drill hole in some scrap - remove the 6mm drill and insert the drilled

[Emc-users] OT - simple motor wiring

You can see the yellow wire bound with the others in the first pic. I'm sure it's a coil wire. Usually the frame wire is bolted to the ... frame. You should measure the resistance of the two coils. They're quite different. I'm not sure what the rule of thumb is on which is the start winding, but

[Emc-users] Whereare you getting your wire from?

On Tue, 29 Oct 2019 at 04:48, Dave Cole wrote: > Menards was selling some surprisingly nice low voltage control wiring > with two conductors two years ago for a good price. I bought a hundred > feet of it or so to wire up some air valves on a machine and I was in a > rush. > It was real

[Emc-users] ADC - realtime for load cell

What will be the total travel of this ballscrew? Is it static or does it travel as well? On Thu, 19 Sep 2019 at 01:39, Curtis Dutton wrote: > my experiment is to use a force measuring device to proportionally control > torque output on a servo attached to a ball screw. > > as a thought

[Emc-users] OT: loctiting cutters

Hi All Was wondering what you guys think about loctiting cutters in place, as a principle. First, here is a typical 2.2kW spindle . It has a max torque of 1.75N.m (ISO20 taper)

[Emc-users] Touching off and Gxx Home positions.

On Sun, 14 Jul 2019 at 22:42, John Dammeyer wrote: > > > M30 (and M2( explicitly sets back to G54. > > http://linuxcnc.org/docs/2.7/html/gcode/m-code.html#mcode:m2-m30 > > Thanks. > > > > Maybe use G54 if you are only going to use one? > > There's a long story as to why I wanted two. But too

[Emc-users] Work holding machining Techniques

> G0 X10 Y100 (equivalent to positioning by DRO) > jog down to kiss the material "Touch Off" Z (equivalent to zeroing the DRO) > It's often suggested to jog down to touch off. Maybe onto some paper or whatever. I think it's a bad idea because of the risk of chipping the flutes, and in the last

[Emc-users] Work holding machining Techniques

How bit is the part? If your stock is a solid bar, or you can use a bar (BMS?) then just clamp the whole bar in the vise, with enough material to the side of the vise. Mill the overhang, flip, mill. Then cut it off and skim the cut face. On Sun, 14 Jul 2019 at 04:25, John Dammeyer wrote: >

[Emc-users] First project with LinuxCNC.

The thing about home/limit switches is that you can actually mount them far from the engagement point, say two feet away. Use a hard, sprung rod to transfer the action. I've also come across switches that you can barely depress with your finger, so that any oil/gunk gets squeezed out the way

[Emc-users] OT: machine style

I thought this is a nice clean axes configuration, for a lighter duty machine But one would have to be careful of to-fro rocking in the linear guides https://www.datron.com/cnc-machine-products/inline.php ___ Emc-users mailing list

[Emc-users] 8255 type cards

Hi all This might expose my ignorance ;-) and I'm not wanting anyone to do in-depth calculations for me.. In the days of ISA cards, the 8255 was quite popular, but now we're onto PCI and PCIe So, if one looks at the Mesa 5i25, it can read encoders because presumably because the FPGA is doing

[Emc-users] OT; Induction servo motor

019 12:18:24 +0200 > Roland Jollivet wrote: > > > A while back there was some discussion on using an induction motor as a > > servo motor. I can't find the thread.. > > I think I know how this should be done but had to fight it for a while. > Now it seems performan

[Emc-users] OT; Induction servo motor

A while back there was some discussion on using an induction motor as a servo motor. I can't find the thread.. Yesterday, at the scrapyard I hauled two of these exact motors off a roller press;

[Emc-users] OT: laser rust removal

I thought this is quite fascinating. (Sorry to all those who think it's old hat..) https://www.youtube.com/watch?v=ACGSzBXKONo ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

[Emc-users] How come....

Because no-one has posted anything? On Thu, 9 May 2019 at 10:17, Peter Blodow wrote: > there has been no incoming mail since May 6th? > Peter > > > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net >

[Emc-users] Servo reduction for gantry machine

. On Tue, 30 Apr 2019 at 19:35, Les Newell wrote: > Hi Roland, > > These are supported rails with open bearings that can't be rotated. That > was one of the first things I checked ;-) > > Les > > On 29/04/2019 16:52, Roland Jollivet wrote: > > Les, have you looked

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