Hello Guest it is October 17, 2021, 03:46:27 AM

Author Topic: Z stepper jerky  (Read 11442 times)

0 Members and 1 Guest are viewing this topic.

Offline Garyh

*
  •  19 19
    • View Profile
Re: Z stepper jerky
« Reply #10 on: June 24, 2008, 09:06:50 PM »
Brett, just running my laptop with the same file with same problem?

Offline Chaoticone

*
  • *
  •  5,626 5,626
  • Precision Chaos
    • View Profile
Re: Z stepper jerky
« Reply #11 on: June 24, 2008, 09:33:26 PM »
Gary, I think it may be your motor tuning. Try this, tune all your motors to the slowest axis. Steps per will stay the same, but turn your accel and vel. down to match slowest axis and see if it smooths out. It will be slower of course but not so much on this file. In a blended move, one axis will limit the others speed.

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 Garyh

*
  •  19 19
    • View Profile
Re: Z stepper jerky
« Reply #12 on: June 24, 2008, 10:56:13 PM »
Brett, I tried to send a video see if this works.

Offline Chaoticone

*
  • *
  •  5,626 5,626
  • Precision Chaos
    • View Profile
Re: Z stepper jerky
« Reply #13 on: June 24, 2008, 11:01:22 PM »
No Gary, that didn't work.  :(

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 Garyh

*
  •  19 19
    • View Profile
Re: Z stepper jerky
« Reply #14 on: June 24, 2008, 11:28:53 PM »
Brett. the video file is abou 4.5meg it won't let me send it.

Offline Garyh

*
  •  19 19
    • View Profile
Re: Z stepper jerky
« Reply #15 on: June 25, 2008, 12:08:49 AM »
 Brett, many thanks for your help. I have made a decision to take the stepper system out and replace with servo system. It appears the stepper
can't handle blend when doing simple 3d machining. Tryed all different motor tuning settings etc. with no luck, once again many thanks. Gary.

Offline Chaoticone

*
  • *
  •  5,626 5,626
  • Precision Chaos
    • View Profile
Re: Z stepper jerky
« Reply #16 on: June 25, 2008, 01:50:59 AM »
Gary, it's up to you but maybe you can get the steppers sorted.  :)  I'd really hate for you to go to the trouble and expense of that and still have a problem.  :(

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 Garyh

*
  •  19 19
    • View Profile
Re: Z stepper jerky
« Reply #17 on: June 25, 2008, 02:37:18 AM »
Yeah Brett, you would think just a couple of clicks and it should be up and running.there doesn't seem to be an easy fix.????

Offline Chaoticone

*
  • *
  •  5,626 5,626
  • Precision Chaos
    • View Profile
Re: Z stepper jerky
« Reply #18 on: June 25, 2008, 09:57:19 AM »
I wish I could see what it is doing. The code is tiny line segments so I wouldn't think it would be very smooth unless you get your CV settings dialed in. I have only done very little 3D files as my machine has a slow z. Hopefully someone else can help out here. If the steppers will move the machine, should be able to get them to run smooth. Maybe not fast, but smooth. I have a friend who is great with 3D files. He is out of town till Friday but I'll alert him to your post. Hopefully someone else will have you sorted by then.

I have sent you a personal message.

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 Hood

*
  •  25,838 25,838
  • Carnoustie, Scotland
    • View Profile
Re: Z stepper jerky
« Reply #19 on: June 25, 2008, 06:19:52 PM »
can you put the vid up on Machs YouTube and we can view it from there.
http://www.youtube.com/groups_videos?name=artsoft

Hood