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CV Problems / Losing steps
« on: June 02, 2007, 05:23:22 PM »
I am having problems with mach2 and cv and i was just wondering if anybody could maybe advise.
My gantry router has been running for a couple of years and i run mach2 v7.5 (old i know but it has always worked).

Anyway i produced a file from artcam to engrave a coin (approx 21mm dia).
If i run the file and go back and check the z position it is .3 - .4mm out of position and always upover.
So i spent all day re-tuning the motors only to find that no-matter what accel i use the machine is alway out the above amount and alway upover.

So i sent the file to a friend that has mach and a milling machine,Now this mill is rock solid and never loses steps.
But sure enough whhen he runs it he is alway out .2mm - .3mm upover.

After much debate i turned the cv off and the machine never lost a step.
I have spent many hours discussing this problem with art over the years,We always seem to get the machine to run but every now and again a new file throws a spanner in the works.

Is there anything i could do in artcam to help,Or mach2?

Regards
Mark
www.weardalecnccarving.co.uk
Re: CV Problems / Losing steps
« Reply #1 on: June 02, 2007, 08:43:25 PM »
I would Try Mach3 and see if you have the same problem... I think the enhanced pulsing could help you.
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com
Re: CV Problems / Losing steps
« Reply #2 on: June 02, 2007, 08:50:47 PM »
Brian

I am already using enhanced pulseing.
The reason i stick to mach2 is because mach3 requires such a powerful computer,And i have never had problems in the past.
It just seems to be this application?

Also the friend that also tried to run the program is running mach3 lockdown.

regards
Mark
Re: CV Problems / Losing steps
« Reply #3 on: June 02, 2007, 08:56:24 PM »
I can test the file here on the servo mill that I have here as well :)
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com
Re: CV Problems / Losing steps
« Reply #4 on: June 02, 2007, 08:58:27 PM »
Where to send the file?
It's a chopped version which only runs for 10 mins.

Regards
Mark
Re: CV Problems / Losing steps
« Reply #5 on: June 02, 2007, 09:00:16 PM »
Brett will test it and he can send it to me :)


He has a stepper mill
Fixing problems one post at a time ;)

www.newfangledsolutions.com
www.machsupport.com
Re: CV Problems / Losing steps
« Reply #6 on: June 02, 2007, 09:06:24 PM »
Brian

I still need to put the file somewhere so you/brett can get it?

Regards
Mark

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Re: CV Problems / Losing steps
« Reply #7 on: June 02, 2007, 09:11:16 PM »
Hey Mark, you can post here on the forum. If you don't know how, watch the welcome tutor, one of the top topics in the general disscusion board.

Brett
;D If you could see the things I have in my head, you would be laughing too. ;D

My guard dog is not what you need to worry about!
Re: CV Problems / Losing steps
« Reply #8 on: June 02, 2007, 09:22:59 PM »
Ok here is the chopped file.
Please run with cv turned on.

Regards
Mark
Re: CV Problems / Losing steps
« Reply #9 on: June 03, 2007, 09:40:17 AM »
Anybody had a chance to run the file?

Regards
Mark