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Author Topic: CV Problems / Losing steps  (Read 8962 times)

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Hood

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Re: CV Problems / Losing steps
« Reply #10 on: June 03, 2007, 02:37:58 PM »
Will try and test it out on my mill tomorrow for you unless Brett has done so before.

Hood
Re: CV Problems / Losing steps
« Reply #11 on: June 03, 2007, 05:04:29 PM »
Woud you please test it :) You k now how Brett can get ;)
Fixing problems one post at a time ;)

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Re: CV Problems / Losing steps
« Reply #12 on: June 03, 2007, 05:35:55 PM »
Tested okay here ... Could you post your XML so I can see your settings?
Fixing problems one post at a time ;)

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Offline Chaoticone

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Re: CV Problems / Losing steps
« Reply #13 on: June 03, 2007, 08:49:20 PM »
Sorry guys, I just got in. Going to test now.

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

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Offline Chaoticone

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Re: CV Problems / Losing steps
« Reply #14 on: June 03, 2007, 09:03:46 PM »
Hey Mark,
    Have you allways had the x,y, and z axis rapid at once? I have had problems with that in the past. Feeding all three at once was fine but I can't rapid all three at once. It use to skip steps bad like that.

I'm still testing your file. I have to set up on a BOB rather than the Grex to test CV.

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!

Offline Chaoticone

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Re: CV Problems / Losing steps
« Reply #15 on: June 03, 2007, 09:37:07 PM »
Mark, try this code and see if you get the same results as the one you posted. It is the same file, I just seperated the rapids.
Still doing some test.

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!

Offline Chaoticone

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Re: CV Problems / Losing steps
« Reply #16 on: June 03, 2007, 10:10:13 PM »
Mark, I just ran your code with an indicator in the spindle. Even with all three axis rapiding at the same time, it retured to zero dead nuts. I Zeroed my axis and the indicator, ran the file. It sends it to 10 at the end. I hit go to z and it was perfect. How are you testing to see that it is getting out .3-.4 mm?


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 #17 on: June 04, 2007, 05:06:44 AM »
Oh dear
Thanks for running the tests guys.
The only thing that is common to my machine and my friends machine are Gecko 210's,should they work in microstep mode x10 or can this cause problems?

Regards
Mark
Re: CV Problems / Losing steps
« Reply #18 on: June 04, 2007, 07:59:23 AM »
Chatoticone

Are they stepper motors you are using,are you using microsteps,did you use cv on?
I know this is not lack of power and def not noise as the program runs no problem without losing steps if i turn cv off.
Does microstepping affect cv?
If i went x5 on the gecko's would it help or hinder the problem?
Any input is appreciated.

Regards
Mark
www.weardalecnccarving.co.uk

Offline Chaoticone

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Re: CV Problems / Losing steps
« Reply #19 on: June 04, 2007, 08:37:54 AM »
Hey Mark,
     Mine is a stepper machine, 10 microsteps, CV on. I'm not sure about the drives you have. I think some do have a problem with CV mode. You will have to Google gecko drives and read up on them. I use the 201s. I have heard nothing but good things about the new 203Vs.


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!