Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: jamiedaugherty on December 02, 2014, 12:44:22 PM

Title: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 02, 2014, 12:44:22 PM
Guys, I'm having a strange problem with threading on my lathe with Mach3.  I've not tried threading on this machine before so please keep that in mind.

It seems to execute the G76 command ok, but no matter what I put in for an X value it tries to run into the negative X.  The machine hits a soft limit a -0.100in and forces the tool back to 0.000.  It then just goes into an infinite loop.  Any ideas?

Also, this is a slant style lathe so the tool is on the back side and the spindle rotates CW.  I'm having trouble getting the tool to move in the -Z direction which is what I need to make a RH thread.  I start out at Z0.7 and the G76 line has Z1.0 but that doesn't work.  Seems like the G76 is trying to work but not correctly.

Sorry for not being more specific, I'm just not sure what to do!  Thanks guys!
Title: Re: G76 Lathe Theading Problem
Post by: RICH on December 03, 2014, 09:30:30 AM
What version of Mach are you using?
Post your xml file that you are using?
Post you gcode file.

RICH

Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 04, 2014, 06:00:58 AM
I meant to add that:

Version R3.043.066

G Code Test File:
-----------------
%
G30 U0. W0.
G90 G95 G54 G48 S2000
T0707
G97 S2500 M04


G00 X1.75 Z0.7

G01 X1.72 F.005

G76 P020560 Q10 R0.0050
G76 X1.72 Z1.0 P500 Q100 R0 F0.0556


G30 U0. W0.
M30

%
---------------------

You can put anything in for the X positions and it acts the same way.  I'm actually trying to make a much smaller thread (M22x1.0) but when that didn't work the first thing I tried was increasing the X's by a large amount, no change.

I can post the xml file too if you need.  Thanks!!!

Title: Re: G76 Lathe Theading Problem
Post by: Hood on December 04, 2014, 07:15:59 AM
Mach uses single line G76, have a look at the code produced by the simple threading wizard or have a look at the lathe manual to see what the code should be like.
Hood
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 04, 2014, 07:47:26 AM
Interesting, I guess that I've never seen that explicitly stated.   Just a Mach3 thing, I assume?
Title: Re: G76 Lathe Theading Problem
Post by: RICH on December 04, 2014, 08:00:41 AM
There are different "dialects" of gcode so consult the Mach Manual as suggested.

RICH
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 04, 2014, 08:16:15 AM
Any suggestions on how to re-write what I've been using?
Title: Re: G76 Lathe Theading Problem
Post by: hanermo on December 04, 2014, 08:47:54 AM
Run the threading wizard for a sample for code.

Also;
Some motion controllers work weird / wrong.
Sometimes the wizards work weird/wrong in threading. Its always consistent.

This is a very complex issue - and I am doing/will be doing a complete write-up on how to do *perfect threads* and howto.
It is affected by;
motion controller, mach3 version, imperial/metric, diameter/radius, and negatives/positives in some values in the wizard.
There are complex interactions in m3 and the wizards, and sometimes the problems show up and sometimes not.

The issues may appear for example when doing an inside vs outside thread, and or if the pullout angle is positive/negative (dont remember any more. I looked at this about 2 years back).
Just wanted to mention this, so You have an understanding why your combo may not appear to work vs other people.

I WILL have a working version in Mach4 with:
-With the motion controllers I use (CSMIO IPS, Pokeys) and metric. Other motion controllers as I get some.
-I will also document the imperial version
-Encoder threading or encoder index pulses
-Step/dir spindle (servo spindle or c-axis)


Title: Re: G76 Lathe Theading Problem
Post by: ministeam on December 04, 2014, 03:07:14 PM
hi
this is the way i write my code for threading on my denford orac cnc lathe , all my code is hand written because i could not get on with wizards
i am using version 062 of mach 3 , with the parallel port

this is my code for a m12 x 1mm pitch external thread
G0 X40.00 Z40.00  (tool change position)
G0 G40 G18 G80 G50 G90 G95
M6 T0505  (external threading tool)  
M3 S550  (spindle speed
G0 X12.00 Z15.00 (threading start point
G76 X10.78 Z-8.90 Q1 P1.000 J0.080 L45 H0.250 I29 C0.250  (thread cycle )
hope this helps you
robert
Title: Re: G76 Lathe Theading Problem
Post by: RICH on December 04, 2014, 05:06:37 PM
Quote
I am doing/will be doing a complete write-up on how to do *perfect threads* and howto
Should be interesting and look forward to it.

There is a write up in Member's Doc's  called Threading on the Lathe - Mach 3 Turn. Not sure how Mach4 will address
tool touch off  and other things for the lathe. Quess we'll just need to waite and read the manual for Mach4 Lathe.

RICH
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 06, 2014, 04:59:07 PM
[EDIT]

So, I got it working.....sort of.  The problem I have now is it will turn the correct thread pitch on the first pass only.  After that it runs at least 2x as fast and the thread gets all messed up.  Any idea what is causing that?
Title: Re: G76 Lathe Theading Problem
Post by: Hood on December 06, 2014, 05:01:36 PM
My lathe has the turret at the rear, so Mach has no issues with that ;)

Attach your xml please.
Hood
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 06, 2014, 05:26:00 PM
Please see the edited post.

What would the xml tell you that would help in this case?  Just curious.
Title: Re: G76 Lathe Theading Problem
Post by: Hood on December 06, 2014, 05:29:39 PM
It will allow me to load your profile here and check through it to see if I can find a problem and save me asking 100 questions ;)
Hood
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 06, 2014, 05:32:20 PM
I'm still not sure why it would create the correct pitch (or at least what appears to be) on the first pass then go crazy on the remaining ones.  My program is set to take 8 passes and by the time it is done what is remaining does not resemble anything like a thread.
Title: Re: G76 Lathe Theading Problem
Post by: RICH on December 06, 2014, 07:49:33 PM
jamiedaugherty,

If you want help post your xml file so someone can have a look and see if there are issues.

RICH

Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 07, 2014, 12:55:25 PM
Here you go guys.  This is a custom xml that was created by the previous owner.  I've had this machine for over 6 months and so far it works well, this is the first problem (that wasn't operator error) I've come across to date.

I hope there is something in there that can help!
Title: Re: G76 Lathe Theading Problem
Post by: Hood on December 07, 2014, 12:59:11 PM
You are running demo mode, threading only works with the licence.
Hood
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 07, 2014, 01:43:21 PM
But it works, just not correctly.  Is that what is supposed to happen?

I recently noticed it wasn't a purchased copy, although the previous owner told me it was.  I will be purchasing a license anyway, just waiting to see if I should stick Mach3 or go to Mach4.
Title: Re: G76 Lathe Theading Problem
Post by: DICKEYBIRD on December 07, 2014, 07:03:07 PM
...just waiting to see if I should stick Mach3 or go to Mach4.
If you want to use that lathe to thread anytime soon, ya' better pony up for Mach3; no other choice.

When Hood says Mach4 Turn is good enough to switch over to, I'll be all over it!:D
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 08, 2014, 07:17:44 AM
Somehow I totally missed the part about threading being disabled in Demo mode.  Looks like that should fix me up, thanks fellas!
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 20, 2015, 09:32:54 AM
Somehow I totally missed the part about threading being disabled in Demo mode.  Looks like that should fix me up, thanks fellas!


Not long after this I purchased a license and everything has been working great.....until yesterday.  Actually, I don't know when it started but I just noticed it yesterday.  It's back to doing the same thing again.  Any thoughts on why it would start doing that???

Thanks again for all of your help guys.
Title: Re: G76 Lathe Theading Problem
Post by: RICH on December 20, 2015, 11:02:29 AM
What is it doing again?

Post you xml file again and the gcode file you tried.
Are you using the simple threading wizard to generate the code?

I am guessing you are new to using Mach3 Lathe.
I strongly suggest you have a read of the Manual. Also have a read of Threading on the Lathe write up which can be found in Members Doc's.

RICH
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 20, 2015, 01:36:12 PM
Not new, been using it for about three years.  I used the wizard to generate the code originally.  I have read the manual.

It is doing exactly the same thing as before - first pass is ok but all other passes are at the maximum machine speed.  I'm trying to tune in my tool offset because I have production parts to make (already programmed).  

I'm not at the shop now but will get the xml the next I'm there.  Why would that have changed???
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 23, 2015, 09:54:46 AM
What is it doing again?

Post you xml file again and the gcode file you tried.
Are you using the simple threading wizard to generate the code?

I am guessing you are new to using Mach3 Lathe.
I strongly suggest you have a read of the Manual. Also have a read of Threading on the Lathe write up which can be found in Members Doc's.

RICH


Here is the xml file.  The code I'm using is this:

%
G30 U0. W0.
G90 G95 G54 G48 S2000
T0707
G97 S402 M04

G00 X2 Z0.3
G00 X0.65
G00 X0.625

G76 X0.5568 Z0.700 Q1 P0.0556 J0.005 L45 H0.0141 I29 C0.025 B0.0001 T0

M5
G30 U0. W0.
M30

%








Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 23, 2015, 09:59:24 AM
Something else to throw out: my PC is old and I have to hit F1 to get through BIOS.  That throws my date off to sometime in 2005.  Even if I change the date in Windows the threading still doesn't work.  Could this have something to do with it?
Title: Re: G76 Lathe Theading Problem
Post by: RICH on December 25, 2015, 09:34:04 AM
jamie,

First a number of comments:
- You are using version 66, suggest you try 62. I am not sure if there are problems with 66.
- You are using a screen set that i am not familar with.
  So, to make things simple suggest you use the generic lathe screen so we can be on common ground.
- Set your spindle speed manualy for threading and not automaticaly.
  So reconfigure Mach.
- When you use the Simple threading wizard click the "calc number of     
  passes" to see if your vel and accel is ok.
- G30 X value Z value, NOT U or w
  G48 - dosen't exist
  G97 -   "       "
  You need to look at Gcode definitions in the Lathe Manual for Mach.
  Two replies were posted informing you about the commands.

- Check that your index is working. You should should see the mode go
  from G94 to G95 when threading.The rpm should be stable within +- 1
  rpm as shown in the DRO when running. If you rotate the spindle by hand you will see the index turn on and off in diagnostics.

All of the above will bring you back to a basic configuration and eliminate spome things that could have an affect and simplify us trying to finding out what is going on.

RICH
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 25, 2015, 10:37:53 AM
Thanks for the response!!!  I'll give you some insight to see if this helps better understand my situation:

- After I purchased a license this was working great.  It was only in the last month or so it reverted back to the issues I had prior to using a purchased version.  Why would v66->v62 fix this?
- Again, could you please explain why the screen would make a difference?  This is a custom screen that has always been used with this machine, I don't think I've ever opened anything else.
- The spindle only works automatically, there is no manual control on this machine.
- I made the code using the wizard initially and only changed the H variable (was 0.021 I think) just to see if that would help, no change.
- G30 with U and W is what works on this machine.
- G48 is used to clear the tool offsets just as good programming practice.
- G97 is what I want, not G96 CSS
- Index works fine, at least from what I can tell.


I guess what still has me scratching my head is why it work then stop all of sudden?  Something must have changed, but I know wasn't my test program.

I'm going to change my CMOS battery to see if that helps.  I'm still wondering if the system date/time could be the problem.  I'll post the results after I try that.

Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 25, 2015, 12:40:58 PM
- Index works fine, at least from what I can tell.

Ok, well, I thought it was working!  Your comment got me thinking so I double checked - lo and behold I'm only getting one index pulse every 2-5 seconds at 1000rpm.  I'm guessing my sensor is bad.  There are no markings on it so it's going to be interesting finding a replacement.

Thanks again for all of your help, hopefully this is my problem.
Title: Re: G76 Lathe Theading Problem
Post by: BR549 on December 25, 2015, 02:24:08 PM
(;-) THAT is not telling you if the Sensor is working correctly or not. The screen led cannot keep up with the pulse rate and will just flash randomly. LOOK at the actual spindle RPM is it stable or does it vary a great deal. IF the RPM is not stable then the threading will not be stable as well. It is trying to follow the RPM.

Most people do not use the latest Version(066)  as it appears to be unstable and they may have broken more than they fixed. Most use a much earlier ver for turn and threading. Do a search and you should find the info.

(;-) TP
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on December 25, 2015, 03:41:48 PM
Actual spindle RPM is very steady, no issues there I can tell.  Is it easy to go backwards to v62?  Would I be better off migrating to Mach4?  I don't want to make a science project out of this, but I DO want to get the threading working again.
Title: Re: G76 Lathe Theading Problem
Post by: BR549 on December 25, 2015, 03:45:48 PM
Mach4 would definetly be a science project at this point. Do a simple search for the best ver for turn and threading it may NOT be V062 it is probably an older version.

(;-) TP
Title: Re: G76 Lathe Theading Problem
Post by: RICH on December 25, 2015, 07:42:48 PM
Can't help you if you don't want to do as requested since
I will need to dupicate what you are doing asking some simple
questions based on eliminating posibilities to begin with.

G96 is constant surface speed, G46 sets the max speed when in G96,
and G97 turns CSS off ( from my notes / not in the manual, and I
don't use them ).

If you did read the Threading on the Lathe Manual, page 4,
How It Works, then would understand a little why I request using the
generic screen set. There may be problems when using CSS as it may
be fighting the threading which is reading true time rpm value and adjusting the next pass based on the monitored rpm during the threading.
If it does not see the index then the treading cycle won't start. It waites for  an index and changes from G94 to G95.

For Now,
RICH
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on January 08, 2016, 03:27:15 PM
Can't help you if you don't want to do as requested since
I will need to dupicate what you are doing asking some simple
questions based on eliminating posibilities to begin with.

G96 is constant surface speed, G46 sets the max speed when in G96,
and G97 turns CSS off ( from my notes / not in the manual, and I
don't use them ).

If you did read the Threading on the Lathe Manual, page 4,
How It Works, then would understand a little why I request using the
generic screen set. There may be problems when using CSS as it may
be fighting the threading which is reading true time rpm value and adjusting the next pass based on the monitored rpm during the threading.
If it does not see the index then the treading cycle won't start. It waites for  an index and changes from G94 to G95.

For Now,
RICH


So, I tried using the standard Marc3Turn screen and that doesn't work at all - it was never configured for my machine so it just throws out a bunch of errors. 

I tried my threading test program again (using my custom screen) and it still does the same thing.  It is exactly the same behavior as when using a free license.  I'm hoping someone has a clue why it would start acting up all of a sudden after working for a long time.
Title: Re: G76 Lathe Theading Problem
Post by: rcaffin on January 10, 2016, 04:38:11 AM
Be of good cheer. Threading does work very well. I use it all the time.

I am running W7, M3...062, with an ESS, and standard lathe screen set.
You need a good clean Index pulse, and to enable spindle averaging.

Cheers
Roger
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on January 12, 2016, 04:54:13 PM
Be of good cheer. Threading does work very well. I use it all the time.

I am running W7, M3...062, with an ESS, and standard lathe screen set.
You need a good clean Index pulse, and to enable spindle averaging.

Cheers
Roger


I also use it all of the time....or should I say USED to use it all of the time.  I have a bunch of production parts that have threading cycles which have worked great for a long time.

I'm really disappointed that nobody can help understand why it stopped working.  Everything else is checking out ok (I double checked the indexing and that looks fine).  It is really frustrating because a CNC lathe that cannot make a thread is not very useful.  Kind of running out of ideas here!
Title: Re: G76 Lathe Theading Problem
Post by: rcaffin on January 12, 2016, 05:11:17 PM
Hi Jamie

OK, so it used to work but now it does not. So, something has changed. There are three possibilities:

1) The Mach XML file has become corrupted and needs fixing. Sadly, that seems to happen a fair bit. But it can be fixed by going through every (damn) screen and checking every detail. Many of us have done that.

2) The hardware has suffered a failure somewhere. This may only be a partial failure. only operating some of the time. It may only happen at speed: Rc filtering perhaps. For this you will probably need an oscilloscope. Sorry about that.

3) The 3rd possibility is a funny one: an interaction between HW and SW. I found that my displayed spindle speed was fine up to ~2200 RPM, then it went haywire. But the HW signals going into the ESS were fine at all speeds. It turned out that at 2200 RPM the Index pulse width dropped below the Mach SW filtering threshold, and so Mach was not seeing the Index pulses any more. I cancelled the filtering.

Cheers
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on January 12, 2016, 05:32:11 PM
Hi Jamie

OK, so it used to work but now it does not. So, something has changed. There are three possibilities:

1) The Mach XML file has become corrupted and needs fixing. Sadly, that seems to happen a fair bit. But it can be fixed by going through every (damn) screen and checking every detail. Many of us have done that.

2) The hardware has suffered a failure somewhere. This may only be a partial failure. only operating some of the time. It may only happen at speed: Rc filtering perhaps. For this you will probably need an oscilloscope. Sorry about that.

3) The 3rd possibility is a funny one: an interaction between HW and SW. I found that my displayed spindle speed was fine up to ~2200 RPM, then it went haywire. But the HW signals going into the ESS were fine at all speeds. It turned out that at 2200 RPM the Index pulse width dropped below the Mach SW filtering threshold, and so Mach was not seeing the Index pulses any more. I cancelled the filtering.

Cheers


Thanks, I'll take another look and see what happens.
Title: Re: G76 Lathe Theading Problem
Post by: rcaffin on January 12, 2016, 05:57:41 PM
I have not worked out why, but it seems that having anything to do with a CNC means either that you pay large amounts to a service technician OR you have to have a DVM and an oscilloscope, at a minimum. That's life.

But there is some satisfaction when you find the bug and fix it. :-)

Cheers
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on January 13, 2016, 08:30:00 AM
I have not worked out why, but it seems that having anything to do with a CNC means either that you pay large amounts to a service technician OR you have to have a DVM and an oscilloscope, at a minimum. That's life.

But there is some satisfaction when you find the bug and fix it. :-)

Cheers


I have a scope so that is a not a problem.  What I can't figure out is why everything seems ok - one day it worked and the next it didn't without any apparent cause.  I fear that I'm going to have to dig really deep which could take a lot of time.
Title: Re: G76 Lathe Theading Problem
Post by: Overloaded on January 13, 2016, 09:04:45 AM
If you can't find any digital anomalies, did you check everything mechanical ?
Loose couplings/pulleys/bearings ?
Does it perform all other turning operations correctly ?

Another thing .. after it runs a messed up thread, will it return to the exact 0,0 position if commanded ?
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on January 13, 2016, 12:20:25 PM
If you can't find any digital anomalies, did you check everything mechanical ?
Loose couplings/pulleys/bearings ?
Does it perform all other turning operations correctly ?

Another thing .. after it runs a messed up thread, will it return to the exact 0,0 position if commanded ?

Yes, all mechanical parts are ok.  It runs parts without threads just fine.  It makes the first pass of the thread just fine.  Each subsequent pass is made at the maximum Z travel velocity of the machine.  It makes the thread just fine, only with a pitch that is way off.  This is precisely the same behavior as a non-paid license.
Title: Re: G76 Lathe Theading Problem
Post by: Overloaded on January 13, 2016, 12:24:29 PM
Double (triple) check that the .lic file is in the proper folder and active.

Don't recall a .lic file getting corrupted .... but guess it's possible. Maybe replace it with the original (if you still have it).
Certainly does resemble no lic.
Have NFS check it for you ?
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on January 13, 2016, 12:33:17 PM
Double (triple) check that the .lic file is in the proper folder and active.

Don't recall a .lic file getting corrupted .... but guess it's possible. Maybe replace it with the original (if you still have it).
Certainly does resemble no lic.
Have NFS check it for you ?

You know, I had thought of doing that.  I still have the original email so I'll give it a shot.  At this point what could it hurt!
Title: Re: G76 Lathe Theading Problem
Post by: Overloaded on January 13, 2016, 12:45:27 PM
Here is a related .lic post ....
http://www.machsupport.com/forum/index.php/topic,18692.msg129005.html#msg129005

FYI/FWIW
Title: Re: G76 Lathe Theading Problem
Post by: Gerald Wubs on January 23, 2016, 09:45:19 PM
hello,
  last night I was going crazy because of very erratic threading.  I read a few threads on this forum, and it was Hood that got me thinking correctly.    I've got it working today, and want to share.  The secret is to have a perfect index pulse.  I had faked my spindle speed into being stable by using major debounce in both Mach3 and ESS dialogue boxes.  This is only hiding a serious deficiency once you try to cut threads.  Hood said"No debounce".  My signal wire was picking up so much noise without debounce that my spindle speed was registering in 8 digits with spindle off!  I hooked up my cnc4pc spindle pulse unit to the c3 board with the shielded cable and presto - no more bad rpm readings, all with no debounce.  It was my twisted pair extension wiring that was picking up the bad signals and passing to Mach.  The signal was so poor Mach had no chance.  I cut a 2 1/4-8 thread in steel today, and it worked perfectly!  Hats off to Hood!!!!
Title: Re: G76 Lathe Theading Problem
Post by: RICH on January 24, 2016, 05:23:09 AM
Quote
I'm really disappointed that nobody can help understand why it stopped working.

If you followed advice given, rather than picking and choosing to rationalize what
what makes sense to youself, you would be farther along.

Consider the following:
1. You were using a version of Mach which has problems along with improper code.
2. You were using an unlicensed copy of Mach. Threading does not work in unlicened
   / demo mode.
3. You were asked to use the standard screen set. Didn't even bother to configure it
   and of course it won't work then.
   
   Understand that when something is not working you go back to BASICS and confirm
   things in a logical way so that there is no need for guessing. That allows others
   to duplicate each step as you go through the process of elimination / confirmation.

Manny times from experience we can give that single fix, but when the variables are
many we need to go through a process.

FWIW,

RICH
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on January 24, 2016, 09:50:57 AM
Quote
I'm really disappointed that nobody can help understand why it stopped working.

If you followed advice given, rather than picking and choosing to rationalize what
what makes sense to youself, you would be farther along.

I have not been given anything tangible to look at.  The problem is it worked one day and not the next, yet your suggestions make it seem like the machine never worked at all.  Unfortunately I do not have the time to walk you through an entire CNC machine build to help you understand the problem.

Quote
Consider the following:
1. You were using a version of Mach which has problems along with improper code.

I'm working this angle right now but it will take a lot of time to reconfigure v62 and get the machine running with this version.

Quote
2. You were using an unlicensed copy of Mach. Threading does not work in unlicened
   / demo mode.

I haven't been running in demo mode for quite some time - I have a purchased license.


Quote
3. You were asked to use the standard screen set. Didn't even bother to configure it
   and of course it won't work then.

See above, I tried that but it is too much work and I do not see how that would help.  Maybe you can explain this in more detail.

Quote
   
   Understand that when something is not working you go back to BASICS and confirm
   things in a logical way so that there is no need for guessing. That allows others
   to duplicate each step as you go through the process of elimination / confirmation.

Manny times from experience we can give that single fix, but when the variables are
many we need to go through a process.

FWIW,

RICH


I'm looking into it, but right now everything seems to be grasping at straws.  Meanwhile I'm threading as a second op on a manual lathe!
Title: Re: G76 Lathe Theading Problem
Post by: Hood on January 24, 2016, 10:10:39 AM
No need to reconfigure for 062, just save a copy of your xml some place else other than the Mach3 folder in case something goes wrong, highly unlikely but best to be safe.
Next run the Mach installer of ver 062, it will overwrite the version you presently have, wait until its finished then open your lathe profile as normal.
If you dont have the settings there for some strange reason just copy the saved xml back to the Mach3 folder, job done.

Hood
Title: Re: G76 Lathe Theading Problem
Post by: Tweakie.CNC on January 24, 2016, 11:12:39 AM
Quote
Unfortunately I do not have the time to walk you through an entire CNC machine build to help you understand the problem.

Perhaps a silly thing to say when you are the one who wants others to spend their time helping you !

Tweakie.
Title: Re: G76 Lathe Theading Problem
Post by: magicniner on January 24, 2016, 11:23:54 AM
Unfortunately I do not have the time to walk you through an entire CNC machine build to help you understand the problem.

What you're essentially saying here is that although others have this working and are willing to help you don't have the time to give them the required info about your system to be able to help you.
Obvious conclusions are that

(i) The software works.
(ii) You're happy to solve the problems without the generous support provided here to the owners of shonky machines.
(iii) You'll need to get the support of whoever built your machine to get it working.

Good luck with that ;-)

 - Nick
Title: Re: G76 Lathe Theading Problem
Post by: RICH on January 24, 2016, 01:58:54 PM
Quote
I tried that but it is too much work and I do not see how that would help.  Maybe you can explain this in more detail.

Sure will, if you will just listen!

If we are both using the generic lathe screen, using the same code generated by the same source, using the same operating system we are on common ground. I can review your configuration, go through basics in a logical order and find where your problem is without guessing. I will add that we don't have to deal with a custom screen set that you are using............haven't the foggiest what was done in that screen set.......just want eliminate many possibilities that a custom screen set can create.

Just offering help to you one more time.........
If you want it just say YES or NO.

If YES, then you have the community at your disposal,  if NO then your on your owne.

What more can one say,

RICH
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on January 25, 2016, 10:20:53 AM
No need to reconfigure for 062, just save a copy of your xml some place else other than the Mach3 folder in case something goes wrong, highly unlikely but best to be safe.
Next run the Mach installer of ver 062, it will overwrite the version you presently have, wait until its finished then open your lathe profile as normal.
If you dont have the settings there for some strange reason just copy the saved xml back to the Mach3 folder, job done.

Hood

I actually tried that but v62 will not recognize my v66 files.  I'll look into again, but luckily I backed up the entire Mach3 folder and I can still run the machine from the new location.  I'll try copying the xml over again.


Quote
Unfortunately I do not have the time to walk you through an entire CNC machine build to help you understand the problem.

Perhaps a silly thing to say when you are the one who wants others to spend their time helping you !

Tweakie.

What I was hoping for was a list of possible causes so I can systematically work my way through to (hopefully) find the problem.  I haven't gotten that from him, only criticism.

The only possible suggestion I've received is that v66 is no good.  I find that strange because it is still listed as the recommended download on the NFS site.  Can anyone provide more insight into this?  I'm slightly fearful because it would seem there was a reason to release v66.
Title: Re: G76 Lathe Theading Problem
Post by: BR549 on January 25, 2016, 10:47:46 AM
Hiya Rich, I think you got your answer >:D

(;-) TP
Title: Re: G76 Lathe Theading Problem
Post by: RICH on January 25, 2016, 11:07:08 AM
Jamie,

I take your last reply as a NO.
I wish you well in finding more insight into your problem on your owne.

RICH
 

 
Title: Re: G76 Lathe Theading Problem
Post by: BR549 on January 25, 2016, 11:23:41 AM
Jamie you were talking to one of the foremost experts on Mach3 turn on this site and all you can do is kick him in the teeth ??

Good Luck, (;-) TP
Title: Re: G76 Lathe Theading Problem
Post by: jamiedaugherty on January 26, 2016, 03:57:56 PM
Jamie you were talking to one of the foremost experts on Mach3 turn on this site and all you can do is kick him in the teeth ??

Good Luck, (;-) TP

That is disappointing because he has not been very helpful!

Seems like the "foremost expert" should be able to provide some ideas on the source(s) of the issue I'm having.  However, best advice I have received has come from elsewhere.