Hello Guest it is March 29, 2024, 08:54:16 AM

Author Topic: Do I need a smoothstepper?  (Read 4505 times)

0 Members and 1 Guest are viewing this topic.

Do I need a smoothstepper?
« on: May 09, 2014, 04:11:52 PM »
I have an issue with juddering and shaking on my CNC router when cutting curves. I have fiddled about with acceleration and feed speeds but it persists. As a newcomer to CNC is a smoothstepper something that may help this? My CNC uses stepper motors and I am running XP with a 2GHz processor.


 

Offline ger21

*
  • *
  •  6,295 6,295
    • View Profile
    • The CNC Woodworker
Re: Do I need a smoothstepper?
« Reply #1 on: May 09, 2014, 06:48:46 PM »
What does your g-code for the curves look like?
Do you have CV mode enabled?
If so, what CV options do you have enabled?

A Smoothstepper shouldn't have any effect on how your machine is cutting curves, unless there's a problem with the parallel port causing the issue.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html

Offline BR549

*
  •  6,965 6,965
    • View Profile
Re: Do I need a smoothstepper?
« Reply #2 on: May 10, 2014, 09:05:02 PM »
Sounds like you ar cutting small segmented lines instead of true arcs
Re: Do I need a smoothstepper?
« Reply #3 on: May 11, 2014, 05:03:53 PM »
CV Mode is activated and at the moment I haven't enabled anything. I will find the g code for the item I was cutting.

I notice the jerkiness as well when engraving letters.

I wasn't sure if a smoothstepper would solve the problem so thank you for confirming that and saving me some cash and a few more headaches!

Offline ger21

*
  • *
  •  6,295 6,295
    • View Profile
    • The CNC Woodworker
Re: Do I need a smoothstepper?
« Reply #4 on: May 11, 2014, 05:20:01 PM »
Some options are enabled by default. Make sure all CV options are turned off, in both General Config, and on the Setting page.
Gerry

2010 Screenset
http://www.thecncwoodworker.com/2010.html

JointCAM Dovetail and Box Joint software
http://www.g-forcecnc.com/jointcam.html