I posted this on CNCzone today but thought I'd post it here too as I need to get my machine tuned correctly; plus I've watched some vids on youtube and now I know it's not running smoothly.
OK, I've used my cnc for a while now, about 1 year, but now I'm finally cutting my guitar stuff and I want to make sure everything is working the way it's supposed to.
When moving during a run the sound of the motors are jerky sounding and when looking at the ballscrews during the run they move in a somewhat jerky motion. Now the cuts seem pretty smooth and since I've never owned or used a CNC machine before I'm not sure if this is correct movement. So if you all can look at the video and tell me that's normal or not I would appreciate it. The sound is going to be the key as it's hard to see the motion of the machine, it's just cutting air I've turned off the router. The video is 15mb. I'll include my G-code for this particular run that you are watching to see if it's that. Its not jerky during straight runs.
Video:
http://www.smokeproductions.com/cnc.avi A little background on the machine, home built. Keling 425oz steppers, Keling 8078 Drivers, 48V 6.5A PS, Roton Ball Screws, Mach 3 V2.63, 10,000 steps per inch, 72IPM maximum and 10 acceleration for motor tuning. I just thought during a run it would run smooth during curves in a fluid motion?
After reading on here about the CV stuff I went back and took note of my CV settings: Motion Mode CV, CV Dist Tol. 180 is checked and G100 Adaptive is checked.
So what setting should I be using and is that my problem? Thanks so much in advance.