Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: aliasant on January 17, 2018, 03:27:32 AM

Title: 4th A axis irradical behaviour
Post by: aliasant on January 17, 2018, 03:27:32 AM
Hi everyone.
I have used my 4-axis machine to create gears with great success but this past week it has started to act weird.

I have the A axis set to rotational angular and limit to 360 and shortcut G0 is active.
I use:
E-Cut 4axis board
Mach3 043.066
Win10 Pro x64


Heres a scenario example:

I load my code to drill 6 holes on a round part with 60 degrees between holes and finish one or two parts. Everything works as expected.
Then, instead of moving from A0 (or were ever the problem starts) to A60 it goes part of the way then suddenly skips to say A165.5347
The axis stops rotating were the big jump starts. The drilling commences.

I hit e stop and then I can jog back to the angle were it jumped from. Say it was 8.3562.

Now i can jog back and forth in one single small step from 8.3562 directly to A165.5347 but the head only rotates that single step.

Anyone familiar with this?
Title: Re: 4th A axis irradical behaviour
Post by: Tweakie.CNC on January 17, 2018, 03:43:19 AM
I have never seen this happen but there are some odd things occur with version .066
Try installing version .062 (over the top of your existing version) and see if that cures the problem ftp://anonymous:guest@ftp.machsupport.com/Mach3/Mach3Version3.043.062.exe (ftp://anonymous:guest@ftp.machsupport.com/Mach3/Mach3Version3.043.062.exe)
Make a backup of your Mach3 folder first (just in case you need to revert).

Tweakie.
Title: Re: 4th A axis irradical behaviour
Post by: aliasant on January 17, 2018, 03:57:39 AM
Thank you!
Will try this now.
Title: Re: 4th A axis irradical behaviour
Post by: jeep534 on January 17, 2018, 07:24:02 AM
Tweaki    I am getting ready to load a new laptop is .062 the solid locked down version...
thank you
archie

P.S. not meaning to hijack the thread
Title: Re: 4th A axis irradical behaviour
Post by: RICH on January 17, 2018, 07:45:03 AM
jeep534,

See the attached file which shows the changes done to Mach3 from version 52 to 62. I don't know what changes were done for 66 as some users have found issues when using it.  062 seems to work fine here.

RICH
Title: Re: 4th A axis irradical behaviour
Post by: aliasant on January 17, 2018, 07:59:32 AM
No luck with .062 :(

It might have something to do with offsets some how.

Latest testrun was like this. Without the "Rot 360 rollover" or the "And Short Rot on G0" ticked in.

Started Mach3 0.62 with all new profile with new settings.
Made 2 succesful runs of code.  
Third attempt stalled A axis at first attempt to rotate 60 degrees. It got to something like 39.2343 degrees and then halted. Readouts in mach3 showed that halted position and it did not change but Mach3 kept following the code, drilling "new" holes but stuck in the same degrees.

It even read this "N200 G91 A60 F1500 (**Go Next Incremental Angle**)" and kept going after that even though the A axis didnt move.

I stopped the program and rewinded it. Then manualy jogged the A axis back to 0 and tried again with the same result.

It starts to move from A0 towards A60 but this time after A39.2343 it jumped directly to something like A-5236.3425.
I can jog back and forth and the jump keeps happening very accuratly.

Stumped!
Any suggestions?

Title: Re: 4th A axis irradical behaviour
Post by: RICH on January 17, 2018, 08:21:03 AM
I am guessing it is your feed rate and you are skipping if using a stepper.
Post your xml file you are using and maybe someone will take a look.

RICH
Title: Re: 4th A axis irradical behaviour
Post by: Tweakie.CNC on January 17, 2018, 08:22:07 AM
Tweaki    I am getting ready to load a new laptop is .062 the solid locked down version...
thank you
archie

P.S. not meaning to hijack the thread

Hi Jeep534,

Popular opinion amongst our members here says that version .062 is the only one to use.

Tweakie.
Title: Re: 4th A axis irradical behaviour
Post by: aliasant on January 17, 2018, 08:23:48 AM
Tweaki    I am getting ready to load a new laptop is .062 the solid locked down version...
thank you
archie

P.S. not meaning to hijack the thread

Hi Jeep534,

Popular opinion amongst our members here says that version .062 is the only one to use.

Tweakie.

Hi.

No skipping. Not at all. No errors like that that I can see.
Title: Re: 4th A axis irradical behaviour
Post by: Tweakie.CNC on January 17, 2018, 08:26:24 AM
Hi Aliasant,

Your .xml file is in your Mach3 folder. Bottom right of the main Mach3 screen is your Profile. Your .xml file is entitled <your Profile> .xml

Use the Reply button the Additional Options to attach your .xml file.

Tweakie.
Title: Re: 4th A axis irradical behaviour
Post by: aliasant on January 17, 2018, 08:41:24 AM
Thank you. Attached the xml.
Just reinstalled completely fresh copy of .062 to test again.

Title: Re: 4th A axis irradical behaviour
Post by: aliasant on January 17, 2018, 08:48:34 AM
Tested freshly installed .062 and this time the problems start emediatly on first run.
Only A axis is affected.

I will try to generate a code using the wizard instead. See if its still the same..
Title: Re: 4th A axis irradical behaviour
Post by: Overloaded on January 17, 2018, 08:55:16 AM
The "A" axis is tuned too fast for the selected kernel speed.
And ..... you are using pirated software.
You must correct that first.
Regards,
Russ
Title: Re: 4th A axis irradical behaviour
Post by: aliasant on January 17, 2018, 08:59:27 AM
The "A" axis is tuned too fast for the selected kernel speed.
And ..... you are using pirated software.
You must correct that first.
Regards,
Russ

Oh. Its NOT pirated!. I bought this from someone on ebay. Its not piracy to buy a license is it?
I will try to tune down the A Axis to see if that helps.
Title: Re: 4th A axis irradical behaviour
Post by: RICH on January 17, 2018, 09:17:49 AM
Quote
Its not piracy to buy a license is it?

You can buy whatever you want.
You have purchased a pirated license and it will be your responsibility to resolve the matter with the provider.
Till then don't expect much help on this site.

RICH
Title: Re: 4th A axis irradical behaviour
Post by: Tweakie.CNC on January 17, 2018, 10:32:26 AM
That MaoA˜A  ¯Ðtonar certainly seems to be selling a lot of licenses on ebay these days. ;D

A genuine Mach3 license can be purchased from here; http://www.machsupport.com/shop/mach3/

I have sent you a PM.

Tweakie.
Title: Re: 4th A axis irradical behaviour
Post by: jeep534 on January 17, 2018, 12:12:36 PM
Boy am I glad my licence file is genuine
archie

I got it before it became popular enough to pirate
Title: Re: 4th A axis irradical behaviour
Post by: rcaffin on January 23, 2018, 03:25:11 AM
Third attempt stalled A axis at first attempt to rotate 60 degrees. It got to something like 39.2343 degrees and then halted. Readouts in mach3 showed that halted position and it did not change but Mach3 kept following the code, drilling "new" holes but stuck in the same degrees.
Now that is really weird. I do not see how Mach3 can 'keep following the code and drilling holes' while the A axis DRO sits still. That just does not make sense.
However, a pirated license would explain almost everything. Only advice you will get here is to buy a real license from Artsoft.

Cheers
Roger
Title: Re: 4th A axis irradical behaviour
Post by: aliasant on January 23, 2018, 03:50:43 AM
Hi.

Yes. It might be the apparently pirated software thats causing this or perhaps my E-Cut 4 axis boards plugin isnt perfect. Im about to get a new license for Mach3 but waiting for funds and trying to understand if I also need to get a new board and if so what board is suitable. Would prefer USB or IP/network card with at least 4 axis.

I also tried to obtain a new version of the plugin to run the E-Cut board from Mach3 it but that has proven to be a hard nut to crack. The seller sent me an install of Mach3 .066 instead and refused to understand that it was their own plugin made for their own E-Cut board that was asked for.
Anyways.
I tried to figure out what caused the A axis problems and did narrow it down to some sort of soft limit
of the range. If I turned of A axis degrees in General Settings it had a range from  -2701.0142 to +2541.8655. Once the axis passed any of the liits it wrapped around to the other. So passing +2541.8655 would emediatly change it to -2701.0142 and then keep rotating in the same direction but with the new readout value.
I solved that temporarily by rewriting my G-Code a axis drilling software to use this new range instead of wrapping around 360 degrees. Works well with no glitches but the axis needs to rotate back to zero after each op. Not really a problem. Just a bit annoying :)

Ill be back once I have a new license but if anyone has any suggestions of a nice 4 axis board to replace y E-Cut board Im eager to listen. USB or IP.



Third attempt stalled A axis at first attempt to rotate 60 degrees. It got to something like 39.2343 degrees and then halted. Readouts in mach3 showed that halted position and it did not change but Mach3 kept following the code, drilling "new" holes but stuck in the same degrees.
Now that is really weird. I do not see how Mach3 can 'keep following the code and drilling holes' while the A axis DRO sits still. That just does not make sense.
However, a pirated license would explain almost everything. Only advice you will get here is to buy a real license from Artsoft.

Cheers
Roger