Re: [Emc-users] Sourced from: Re: Fluctuating RPM using CUI ATM 10 encoder

Try “Linuxcnc rockhopper” -Tom > On May 7, 2020, at 12:27 PM, James Isaac wrote: > > Hello Gene. > > A while back, you said: >> In rare cases you may have to survey the running >> system with "rockhopper", (google for it, pain in the butt to use but >> its also very very good at what it does,

Re: [Emc-users] Reverse/stop spindle for no reason

5 years it’s been running. I have seen some oddities but not related to the spindle suddenly changing direction or stopping. The back to back G96s seem to be the trigger (if not the cause)…. -Tom _______ Emc-users mailing list Emc-use

Re: [Emc-users] Reverse/stop spindle for no reason

I will have to dig up my documentation…. By the way, I haven’t ever seen this happen before using this code from Fusion. Other code, or course, wouldnt lilely have 2 back-to-back G96 commands, but this seems to be related to the fact that spindle is in some state of CSS, gets commanded again

Re: [Emc-users] Reverse/stop spindle for no reason

hon Electric brand bought through Automation Direct) driven by an Automation Direct VFD (GS2). -Tom ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Reverse/stop spindle for no reason

Gene, This is a lathe I am talking about. So FWD is relative to the tools then? My tools can go in the turret (which is above and to the left of the spindle) in either direction (forward facing or rear facing). So these terms don’t define M3/M4…. Also, this is not a Chinese VFD. It is an

[Emc-users] Reverse/stop spindle for no reason

Is there a standard or convention on which way M3 and M4 spins a lathe spindle? Is the direction (CW/CCW) viewed from looking at the spindle face or out FROM the spindle? Does it change depending on where the tools are? I think I may have our lathe set up to spin opposite of convention but

Re: [Emc-users] different idea re mister

Submersible (salt water) fish tank pump? https://www.amazon.com/gp/product/B004IMPOIO/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8=1 -Tom > On Mar 25, 2019, at 12:42 PM, Gene Heskett wrote: > > On Monday 25 March 2019 11:11:21 John Dammeyer wrote: > >> Can't you just build yourself a small

Re: [Emc-users] ConFusion 360

Indeed! I've always said one should run Windows as an application in Unix as god intended ;-) -Tom > On Mar 23, 2019, at 11:35 PM, Chris Albertson > wrote: > > Almost all of this Windows BS goes away if you run Windows in a VM.The > easy and secure way to run Windows is to first install

Re: [Emc-users] mister nozzle shape

FWIW, here are models of the No Mister Misty: https://bgp.nu/~tom/pub/NoMisterMisty-Assy.f3d. (Fusion 360 Assembly) https://bgp.nu/~tom/pub/NoMisterMisty-Assy.zip (Solid Works Assembly) https://bgp.nu/~tom/pub/NoMisterMisty-Assy.step (.stp or step file) -Tom > On Mar 21, 2019, at 2:11 PM,

Re: [Emc-users] Surface grinder vertical axis servo motor and controller recommendation

e correct that speed isn’t an issue so could probably just step from the PC. Also, given a modern stepper with enough torque it would probably be fine vs a servo system. Linuxcnc just seems a bit overkill (as well) given the simplicity of what he wants to do. Thanks, -Tom ___

Re: [Emc-users] CSS and spindle-at-speed during a G33

A warning would be nice. A warning with option to continue with spindle slowed would be a bonus. -Tom > On Feb 7, 2018, at 4:43 PM, andy pugh wrote: > > On 7 February 2018 at 20:02, John Kasunich wrote: > >> >> LinuxCNC will NOT reduce the

Re: [Emc-users] CSS and spindle-at-speed during a G33

My experience corroborates Peter and John’s descriptions. I tried cutting an SFM that was above the capability of the Z-axis to move, just for fun. Rather than a thread, I essentially got a bored out cylinder with some thread-like lines as a finish. So it doesn’t slow the spindle to the

Re: [Emc-users] CSS and spindle-at-speed during a G33

Thanks Chris…for both the information and one of the most apropos example of autocorrect I have ever seen. "The spinach is turning in x-direction the carnage in z” I think this will be my new signature line ;-) -Tom > On Feb 7, 2018, at 2:35 PM, Chris Albertson

Re: [Emc-users] The sound of G1 vs G33 moves

> On Feb 6, 2018, at 11:03 AM, John Kasunich wrote: > > When you say "same feeds and speeds", do you mean you have selected the > F and K and S values such that the actual Z axis speed should be the same? Yes, exactly. We calculated what F,K and S values would give

Re: [Emc-users] CSS and spindle-at-speed during a G33

> On Feb 6, 2018, at 10:28 AM, andy pugh wrote: > > On 6 February 2018 at 15:20, wrote: >> >> As I replied to Andy, spindle-at-speed is just coming from vfd-at-speed in >> custom.hal. >> net gs2-at-speed motion.spindle-at-speed <= spindle-vfd.at-speed > >

[Emc-users] The sound of G1 vs G33 moves

In an effort to optimize our lathe for spindle synchronized motion a question came up. Should a machine sound the same when running a G1 vs G33 at identical feeds and speeds? When we spin the spindle at, say, 800 rpm and command a G1 move in Z at 80 ipm the machine sounds different from a

Re: [Emc-users] CSS and spindle-at-speed during a G33

As I replied to Andy, spindle-at-speed is just coming from vfd-at-speed in custom.hal. net gs2-at-speed motion.spindle-at-speed <= spindle-vfd.at -speed I am not using wcomp or near component as suggested in the manual:

Re: [Emc-users] CSS and spindle-at-speed during a G33

That is a good question, and one we have recently asked ourselves. In fact we changed our threading routine to fix the RPM because at least then the spindle is not constantly accelerating and decelerating. But, to be honest, CSS should work fine, all it does it change the spindle speed for a

[Emc-users] CSS and spindle-at-speed during a G33

We have CSS on and are threading with a G33 on our Emco lathe and we are seeing the spindle decelerating during the cut. Seems like the spindle speed should be fairly steady at a given X location during a G33 and what it seems like is that the spindle is still decelerating to speed while it’s

Re: [Emc-users] G76 tool path not behaving as expected (bad code or bad expectations?)

> On Jan 18, 2018, at 1:04 PM, Gene Heskett wrote: > > On Thursday 18 January 2018 10:41:50 Kirk Wallace wrote: > >> On 01/17/2018 11:45 AM, tom-...@bgp.nu wrote: On Jan 17, 2018, at 10:43 AM, Kirk Wallace

Re: [Emc-users] G76 tool path not behaving as expected (bad code or bad expectations?)

> On Jan 17, 2018, at 10:43 AM, Kirk Wallace > wrote: >> > I did a rewrite a while back: >> http://wallacecompany.com/tmp/G76/G76-7b.cc >> >> http://wallacecompany.com/tmp/G76/Screenshot-g76_kw-1a.png >>

[Emc-users] G76 tool path not behaving as expected (bad code or bad expectations?)

We are tying to cut some internal Acme threads on our lathe. We have an internal Acme 8-pitch single point tool. From the edge of the backside of tool to the tip of the cutting point is 0.490”. The major diameter of our hole to thread is 0.506. So, you can see there is very little

Re: [Emc-users] Internal threading using external G76 tool path (back-tool lathe)

Another question related to threading…. It is my understanding that when cutting internal threads (or external threads) that after a threading pass the tool should return to the driveline (“I”) in order to retract for the next pass. But, as can be seen in the image below, the various

Re: [Emc-users] Internal threading using external G76 tool path (back-tool lathe)

Gene, > On Jan 13, 2018, at 8:18 AM, Gene Heskett wrote: >> > This is confusing Tom. From the video I'd assume the enco is a slant bed > machine. So this s/b equ to a regular lathe, with the z axis rotated > some arbitrary, might not be 90 degrees CCW as viewed from the

[Emc-users] Sluggish Intel Atom DN2800MT motherboard

My new-old Intel DN2800MT motherboard is a bit sluggish on my Emco. I helped it a bit by disabling Hyperthreading in the bios and setting ISOLCPUS=1 in Grub. But I have a vague recollection of needing to do something related to the graphics driver for the board (board has crappy built-in

Re: [Emc-users] G0 vs G1

I would expect compensation to be on or off period (that is, not PER axis). I am curious why you expect it to look that way. Why would you expect the first move to position itself one cutter diameter lower than where the cut should be? We are using a NGCGUI routine that was written by

Re: [Emc-users] G0 vs G1

I admit that compensation confuses me on a lathe. I have no idea if it is cancelling or changing - but why would it change? There is a single G42 at the beginning of the routine. The routine is simply cutting a taper (as can be seen by the steeper lines in the back plot) starting at

Re: [Emc-users] G0 vs G1

Yes, I do see different results, the line becomes horizontal rather than angled. But my question is, why when cutter compensation IS on, are the moves treated differently. By the way, even if we change the first G0 to a G1, we still get the angled line. So, it isn’t G0 vs G1, it is simply

Re: [Emc-users] G0 vs G1

I don’t disagree but am failing to see the connection to my question…? -Tom > On Jul 2, 2017, at 4:16 PM, Stuart Stevenson wrote: > > It has always been my experience G40 cancels cutter compensation. > > On Jul 2, 2017 2:44 PM, wrote: > > Why would G0 to a

[Emc-users] G0 vs G1

Why would G0 to a given location in one axis (X) differ such that a G1 movement in another axis (Z) causes the first axis to move? Let me explain... Attached is a screenshot of the back plot from Axis: http://bgp.nu/~tom/pub/G0G1.png The highlighted line is "G0 X#" However, if you look at

Re: [Emc-users] Can't install from livecd (usb stick)

Thanks for the suggestions. I think you are both right, the system just won’t boot off USB. And in fact after thinking about it more I believe I built the original system off a DVD drive. That was back when bootable USB sticks were just getting started. I was thinking that installing onto a

Re: [Emc-users] Can't install from livecd (usb stick)

Thanks Kurt, I'm fairly certain that I originally built it using a USB stick (back in the day) with Ubuntu 10.04…. -Tom > On Jul 1, 2017, at 4:57 PM, Kurt Jacobson wrote: > > I know that some older computers do not support booting from a USB. Have > you been able to

Re: [Emc-users] Can't install from livecd (usb stick)

Still fighting with this. I’ve never had so much problem installing Linuxcnc. I have tried everything, different USB sticks, building on several different machines using the several different methods and nothing I do seems to help. I still get stuck in this loop of the install trying to use

[Emc-users] Can't install from livecd (usb stick)

I was going to update my Emco F1 mill with the latest Linuxcnc running on Debian Wheezy. It is currently on an old Ubuntu that isn’t updated anymore. I have built a bootable USB stick using two different methods, one from my Mac using terminal commands and one from another Debian machine

Re: [Emc-users] steppers with encoders in closed loop

Latest plot (on X axis): http://bgp.nu/~tom/pub/pid-X-ff2.png -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot

Re: [Emc-users] steppers with encoders in closed loop

Thanks Peter, It did help a small bit. Max f-error is now .00014 to .00015 (vs .00018 to .00019). That is a sensitive parameter. I played with FF2 = .001 (bad), .0006 (bad), .00055 ok but ferror was .00016-.00017, so I left it at .0005. -Tom > On Jun 26, 2017, at 7:35 PM, Peter C. Wallace

Re: [Emc-users] steppers with encoders in closed loop

And for those following along at home, I got the machine set up in velocity mode and the pid tuned fairly well. The following error is less than .0002 and the machine runs very nicely, and I can now Home to the index pulse on the encoder (which is where this all began)! Yay. Below are links

Re: [Emc-users] steppers with encoders in closed loop

Thanks Todd, your suggestion lead me to the issue. Turns out PNConfig sets the P term to 1000 (and Deadband to 0.0) at which point I got a terrible nose from the motors. Setting the P term down to 10, and setting Deadband to 0.0005 has it running quite smoothly. Now to run Halscope and get

[Emc-users] steppers with encoders in closed loop

I would like to attempt to get my machine with stepper motors running in velocity mode with feedback from the encoders. Below are the relevant parts of my Hal and Ini files for just the X-Axis. I figured I would do one axis at a time. Currently nothing happens when I try to jog the X axis

Re: [Emc-users] following error only while homing

Here is more zoom fwiw…. http://bgp.nu/~tom/pub/enc-6.png -Tom -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot

Re: [Emc-users] following error only while homing

Yes, when I re-enable the machine (with or without estop first) I get another (immediate) following error. That is, I understand to make the notification itself go away I click the X, but what I am seeing is a perpetual following error when re-enabling with each new notification piling up on

Re: [Emc-users] following error only while homing

You guys are prolific, and I appreciate it! Thanks for all the input. A few things in case it hasn’t been clear... 1) I don’t (currently) have a PID involved at all (position-mode steppers with encoders only). 2) If I set FERROR=2 and MIN_FERROR=1, homing DOES complete successfully. 2)

[Emc-users] following error only while homing

Why would I get a following error only while homing (latest Linuxcnc 2.7.9)? I recently added home switches to my machine. My machine has encoders on the steppers on each of the 3 axes so I want to use the index pulse for home. I set up the homing sequence each axis and when I do "Home All"

Re: [Emc-users] LCNC TED Talk style

If you have sound Chris Radek’s gcode playing “Daisy” is amusing. There may be other renditions, this is my Emco F1... https://youtu.be/S0re79zEX5A -Tom > On Jun 14, 2017, at 11:49 AM, Nicklas Karlsson > wrote: > >> Friends! >> >> I've been asked to do a 25

[Emc-users] backtool lathe tool table DIAM entry and tool orientation

The Emco 120P I am using is a back tool lathe. Tool turret is above to the right of the spindle, and +X is up, -X is down towards spindle. For my threading tool which is pointing straight down, if I enter a value into the DIAM column in the Tool Table for the radius of the tool tip, will

Re: [Emc-users] Question on thread geometry

My numbers are similar (not exactly the same): Major Dia: 0.3678 Minor Dia: 0.3239 Thread Depth: 0.2555 I am measuring with thread wires (0.029 dia) and am trying to get a pitch dia of between 0.3468 and .3430 (class 2A or better). -Tom > On Jun 5, 2017, at 5:30 AM, andy pugh

Re: [Emc-users] Question on thread geometry

This is a G76 canned cycle and I usually enter 1 (sometimes 2) spring passes. The spring pass(es) take no material so this isn’t a deflection problem. My theoretical thread depth was 0.0255. I ended up needing to set it to 0.0280, but once set it cuts correctly and repeatably. I thought

Re: [Emc-users] Question on thread geometry

Well, I cut a bunch of screws today, which was executing a repetitive series of gcode routines and I did not have this problem at all. I am now thinking it is caused by something we are doing outside of the G76. We were touching tools off and I am wondering if we did something that caused the

Re: [Emc-users] Pyngcgui question on formatting parameters

Thanks Dewey! That did the trick. Changed: # try to use minimum height if less than 3 columns 1653 if nparms > 20: 1654

[Emc-users] Pyngcgui question on formatting parameters

I have an issue with Pyngcgui subroutine parameter entry. I am space/resolution constrained on the monitor I use on the lathe and this results in limited space in the display of Axis’ various panels. I am using pyngcgui as tabs in Axis as well as a Glade panel on the right and when pyngcgui

Re: [Emc-users] Question on thread geometry

> On Jun 3, 2017, at 7:16 AM, Gene Heskett wrote: > > > What then is the effect of g7/g8 on g76? Gene, According to the G76 man page: "Note: When G7 Lathe Diameter Mode is in force the values for I, J and K are diameter measurements. When G8 Lathe Radius Mode is in

Re: [Emc-users] Question on thread geometry

> On Jun 3, 2017, at 5:17 AM, andy pugh wrote: > > On 3 June 2017 at 01:11, wrote: >> However, what we were seeing (and have seen multiple times now but cannot >> yet re-create at will) is that even though our routine is commanding say, a >> diameter of

Re: [Emc-users] Question on thread geometry

To touch the tool off I am physically cutting an OD, measuring that diameter and touching off the tool using that mic’d measurement, so the “actual tip” as you say. So, yes, we are cutting a tiny bit deeper. However, what we were seeing (and have seen multiple times now but cannot yet

Re: [Emc-users] Question on thread geometry

Ok, thanks for the responses. I found some thread gauge wires and with them have determined that we are cutting too deep. This would cause the pointy peaks and root, so the next question is why are we cutting too deep…? We believe we are entering the correct value for K (thread depth) but I

[Emc-users] Question on thread geometry

There is a custom adjusting screw that I buy commercially and when I get them the threads have a text-book geometry to them. That is, they have a small flat top on the major diameter and small flat bottom at the minor diameter or root. They are made to class 2 or perhaps even class 3. I know

Re: [Emc-users] Happy New Year everybody!

Happy 12,017!! -Tom http://www.popularmechanics.com/science/archaeology/a24195/case-for-a-new-calendar-12017/ > On Jan 1, 2017, at 12:01 AM, Gene Heskett wrote: > > Cheers, Gene Heskett > -- > "There are four boxes to be used in defense of liberty: > soap, ballot, jury,

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

> On May 11, 2016, at 9:57 PM, Andy Pugh wrote: > 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) It is even more generous than it first appears. We have had a several

Re: [Emc-users] Special cables

While we’re listing sources… waytekwire.com is also a good source for wire in the US at reasonable prices. They sell products generally automotive use but most applicable to machines. Their automotive primary wire is spec’d for oil, heat resistant, etc. -Tom > On

Re: [Emc-users] OT: Linux Security

t; the key in three locations (devices) so losing the key would be extremely >> unlikely. > > but it can also be stolen in 3 different places :-) True that, if

Re: [Emc-users] Strange behavior of backplot on our plasma machine

Hmm, I’ll look into the M codes tomorrow, I can’t recall if those are related to our torch height controller or something else... I ran this on my lathe machine (in Axis SIM) which is also running 2.7.4 on Wheezy and I too didn’t have any problems with it there. I am really at a loss to

[Emc-users] Strange behavior of backplot on our plasma machine

We are running Linuxcnc 2.7.4 on our plasma machine. Today during the class on the machine the backplot started jumping around. See videos below. This happens after we load the file, move over the part, Touch Off X,Y and then click the first view icon in Axis (Z). Has anyone seen the

Re: [Emc-users] Pyngcgui questions

That’s good to know. Thanks John. -Tom > On Feb 20, 2016, at 1:15 PM, John Thornton wrote: > > The limit on subroutine parameters is 1 through 30. > > JT > > On 2/20/2016 12:05 PM, tom-...@bgp.nu wrote: >> I modified this slightly so that if the number of parameters is

Re: [Emc-users] Trying to do anything with glade, can't, apparently missing resources

Yes, I believe there is no support for gtk3 (yet? ever?). I am using/editing Glade panels in Wheezy using glade-gtk2. -Tom > On Feb 21, 2016, at 11:48 AM, Philipp Burch wrote: > > Hi Gene, > > I remember that there was something with Glade 2 and Glade 3 being entirely >

Re: [Emc-users] Pyngcgui questions

I modified this slightly so that if the number of parameters is greater than 25 (25 happen to fit nicely in the space on my monitor) it will create another column parameters. By the way, I suspect it is very uncommon for a subroutine to require so many parameters. All the subroutines I have

Re: [Emc-users] Clone a HD

>> On Feb 20, 2016, at 11:56 AM, Chris Albertson >> wrote: >> Note that to close a device you need identical hardware. > > To clarify, you don’t need “identical” hardware. You need a disk that is the > same size or larger to clone a disk. > -Tom And, I should

Re: [Emc-users] Clone a HD

> On Feb 20, 2016, at 11:56 AM, Chris Albertson > wrote: > Note that to close a device you need identical hardware. To clarify, you don’t need “identical” hardware. You need a disk that is the same size or larger to clone a disk. -Tom

Re: [Emc-users] Clone a HD

+1 for Clonezilla. I keep it on an old usb stick, boot from it and clone the drives. I use it fairly frequently and keep copies of machine drives so if I lose one I can just put in the clone and continue on my way. Also, as Sarah mentions, not only is dd copying every bit (even blanks) and

Re: [Emc-users] Pyngcgui questions

> On Feb 19, 2016, at 1:11 PM, Dewey Garrett wrote: > >> ... >> Is there a way to make them appear as vertical list? > no Thanks Dewey. I found the .py file and modified the “make_entryfields" function to set the number of rows equal to the number of parameters. That way

[Emc-users] Pyngcgui questions

I just discovered Pyngcgui. I’ve been using standalone ngcgui for a while. Little nits about it’s UI have always driven me crazy. Mostly that if my cursor drifts out of the tiny box when entering values it loses focus. I was wishing there was a python version and google told me it was

Re: [Emc-users] MPG Handwheel for use with 7i73

Rick, I may be able to help you out fixing your mpg. I am just up the road from you in Ann Arbor. I sent you a message a couple days ago but it may have gone into your spam mailbox. -Tom > On Feb 7, 2016, at 9:55 AM, r...@superiorroll.com wrote: > > We do need the whole pendant, I found

Re: [Emc-users] Any idea how they machine these?

Super sized machines are still made. IMTS (in Chicago Sept 12-16 this year) has had giant lathes in the past. I was amazed at one that had what looked to be a railroad car axle with wheels which appeared to be turned from a single billet of steel (that must have been enormous!). By the way,

Re: [Emc-users] Creating G-code?

I too am a Mac user. Up until recently I have been using Geomagic Design (formerly Alibre Design) for CAD and mostly Sheetcam for CAM. Both of these apps are Windows based. I run Windows7 as an application on MacOS - as god intended ;-) with Parallels. Geomagic and Sheetcam are pretty much

Re: [Emc-users] Creating G-code?

BTW, Dale Grover at Maker Works in Ann Arbor put together this handy overview of the CAD/CAM tool chain: http://maker-works.com/wp-content/uploads/2015/12/cadcamPosterV1.png -Tom -- Site24x7 APM Insight: Get Deep

Re: [Emc-users] Creating G-code?

"the CAD/CAM tool chain” should have been "their CAD/CAM tool chain”. This is Maker Works tool chain for the software they use and the machines they drive. It doesn’t include ALL possibilities. For example, Fusion 360 CAM isn’t shown. But handy nonetheless. -Tom > On Jan 30, 2016, at 5:12

Re: [Emc-users] Creating G-code?

To clarify… This is not an Adobe app. The company is Autodesk, same company that did Autocad and Inventor, etc etc…. -Tom > On Jan 30, 2016, at 11:33 PM, Chris Albertson > wrote: > > As I said, running this app as I type... Yes you can sign up for free use >

Re: [Emc-users] Creating G-code?

> On Jan 30, 2016, at 11:56 PM, Chris Albertson > wrote: > > For Mac users getting it from the Apple Mac Store is better than downloading > from the Autodesk web site.Apple will manage software updates > automatically and it will run on all my Apple computers,

Re: [Emc-users] Creating G-code?

Chris, Go here: http://www.autodesk.com/products/fusion-360/overview Download, sign up, and if you are a small business making less than $100k per year (I think that is the number), or a hobbiest you get a 1 year (and renewable) license for no charge. -Tom . > On Jan 30, 2016, at 11:04 PM,

Re: [Emc-users] Creating G-code?

Here is the quote from the Fusion 360 link I sent: "Access the same design software used by industry leaders worldwide. A free 3-year license is available for students, teachers, and academic institutions. A free 1-year startup license is also available for hobbyists, enthusiasts, makers,

Re: [Emc-users] Camview-emc update

xmat.net -Tom >> > Or sharmov@? > > I'll see if I can send a pleading his way once that question is settled. > > Thanks Tom-emc. > > But, since its getting closer all the time for a new install.iso spin, is > there a possilbility we should wait so he doesn't do it for

Re: [Emc-users] Calculating thread engagement [Was: Rigid tapping speed advice]

> On Jan 25, 2016, at 10:45 PM, Gregg Eshelman wrote: > So you either have to somehow get a finger on something to provide > enough drag to force the ratchet to do its job, or you're stuck > constantly swapping and flipping two different open end wrenches because > the

Re: [Emc-users] Camview-emc update

It was Pavel Sharmov. His email address back in 2010 was: shra...@mexmat.net -Tom > On Jan 25, 2016, at 10:52 PM, Gene Heskett wrote: > > Greetings; > > I just now got the bounced message, the address in the camview web page > of deb...@psha.org.ru, is a bounce so no

Re: [Emc-users] Calculating thread engagement [Was: Rigid tapping speed advice]

As is often the case with data in Machinery’s Handbook, the specific information one is trying to find is difficult to locate. After many minutes of scanning I found the tolerances of a class 6H internal metric thread M12 1.5 thread: Minor Diameter - Min:10.376 Max:10.676. So, this says that

Re: [Emc-users] Rigid tapping speed advice

OSG, referenced earlier by John Thornton, has this tool (http://www.osgtool.com/Technical.asp?tid=1=1) that calculates hole size given Major Dia, Pitch, and Engagement (% of Thread). Their numbers seem to be slightly different than Erik’s though, but they suggest 60-70% engagement for deep

Re: [Emc-users] Rigid tapping speed advice

What are your favorite internal single point threading tools? I don’t have one (yet) and haven’t tried any internal threads. How small can you go doing that? Did I mention I’m not a “real” machinist :-) Thanks everyone for all the good info! -Tom > On Jan 22, 2016, at 2:07 PM, Gene Heskett

[Emc-users] Rigid tapping speed advice

I need some advice rigid tapping on an Emco120p lathe. The lathe has a 3.5HP motor that can go from 50-3000rpm. It can travel at about 120 ipm (maybe 150 ipm, but haven’t verified it’s max yet). Spindle torque drops off as I go down in lower rpm range, of course. I have done some tapping

Re: [Emc-users] Rigid tapping speed advice

This is the tap I am using: http://www.mscdirect.com/product/details/58607482?rItem=58607482 The drill I am using is 10.5mm which is 0.875 of 12mm so I would say that seems fairly large. The OSG online tool recommends a 27/64” (10.7mm) drill, so I am very close (0.008” difference). Also, if I

Re: [Emc-users] Rigid tapping speed advice

Hey Drew, I ended up mounting it exactly like the old encoder, in the same cylindrical housing. I only had to machine a new mount for the encoder housing because the disc was smaller diameter so the mount had to raise the encoder a bit compared to the older one. I attached the encoder wheel

Re: [Emc-users] Rigid tapping speed advice

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:

Re: [Emc-users] Rigid tapping speed advice

On Jan 22, 2016, at 9:31 PM, tom-...@bgp.nu wrote: > > bgp.nu:/~tom/pub/EMCO120P-NewEncoderBrakt.stp Oops, my link had a typo in it. The correct link is: http://bgp.nu/~tom/pub/EMCO120P-NewEncoderBrakt.stp -- Site24x7

Re: [Emc-users] View buttons and views in Axis menu gone in lathe mode

Is there a way to bring them back in Lathe mode? It is a lathe I am using it on so want to keep that mode, but want the buttons so I can get the view back on the screen after touching off. -Tom > On Jan 19, 2016, at 6:22 PM, John Thornton wrote: > > Change the mode back to

[Emc-users] View buttons and views in Axis menu gone in lathe mode

I am using Axis in lathe mode and the view buttons that are normally there, at least on my mill and plasma machine, are missing in Axis’ tool bar and View Menu (2.7.3) . Is there a way to get them to show up? -Tom --

Re: [Emc-users] Debian Wheezy monitor problem(s), new install

and in the upper left corner, the other background image defined for LVDS1 (low display res) I have another image. Any ideas on where to go from here? -Tom -- ___ Emc-users mailing

Re: [Emc-users] Debian Wheezy monitor problem(s), new install

s I found a checkbox to turn off the LVDS1 screen and so when the log in completes I have only one background image. The 0.1% that isn’t correct is that the login screen has both monitors live with

[Emc-users] Debian Wheezy monitor problem(s), new install

an Xfce Error that the Panels haven’t been saved (I say OK), and a second one that says they can’t be written without permission. Any idea how to get those to go away? -Tom

Re: [Emc-users] Debian Wheezy monitor problem(s), new install

; >> The third (and more minor) issue is related to the Xfce (user interface) >> tool bars, they call them Panels. When I log in I get an Xfce Error that >> the Panels haven?t been saved (I say OK), and a second one that says they >> can?t be written without permission.

Re: [Emc-users] Debian Wheezy monitor problem(s), new install

This is a D510 board. I will see what I can do with xorg.conf… Thanks, -Tom > On Jan 3, 2016, at 9:00 PM, andy pugh wrote: > > On 4 January 2016 at 00:27, wrote: > >> I sort of know what the issues are, I just need help in extracting myself >> from the

Re: [Emc-users] Rookie Question - Direct wire or connectors

Neutrik connectors are surprisingly affordable and very reliable: http://www.neutrik.com I used the XLR, etherncon, and powercon connectors on a plasma machine and they have held up over the years. -Tom > On Dec 26, 2015, at 6:30 PM, John Thornton wrote: > > something like

Re: [Emc-users] Rookie Question - Direct wire or connectors

/16940006302/in/album-72157651167328249/ -Tom -- ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users

Re: [Emc-users] Grounding Issues

ferrites I used: https://www.digikey.com/product-detail/en/74277290/732-3092-ND/2626031 Good luck. -Tom -- _______ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.

Re: [Emc-users] Grounding Issues

I bought some Weidmuller WPE6 off ebay for less than $1/ea. In fact, I bought various DIN terminal blocks off ebay for a fraction of the price new. I’d watch ebay, you may find a deal…

  1   2   >