Hello Guest it is May 20, 2019, 07:09:28 AM

Author Topic: machine drags when backlash compensation turned on.  (Read 2982 times)

0 Members and 1 Guest are viewing this topic.

machine drags when backlash compensation turned on.
« on: February 07, 2010, 04:51:40 PM »
I just installed a new version of mach3 mill and my mill drags every time it reverses direction. I tried imputing different percentages of full speed but
didn't see much difference. Anyone have a solution for this.
Thanks
Wawatobi

Offline ger21

*
  • *
  •  6,231 6,231
    • View Profile
    • The CNC Woodworker
Re: machine drags when backlash compensation turned on.
« Reply #1 on: February 07, 2010, 05:21:00 PM »
I think it has to do with the shuttle accel, but I don't know where you need to set it. This might help.

http://www.youtube.com/user/hossmachine#p/u/80/A27nOkTFYDY
Gerry

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

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

Offline RICH

*
  • *
  •  7,330 7,330
    • View Profile
Re: machine drags when backlash compensation turned on.
« Reply #2 on: February 07, 2010, 05:50:48 PM »
Good post Gerry....

 I use 50% and a shuttle of .005 and the backlash is rather hard, by that i mean almost instantaneous.

I suggest one play with the settings starting with 50% ( i don't like 100%, but that's my nickle on it ) and say shuttle of .5, then .05, then .005 to see the differences. Then up the % to say 75%, and again to 100% with the the different shuttles.
BTW, you may want to see the same affects when using exact stop and constant velocity. been a while since i played with the compensation.

RICH


Offline RICH

*
  • *
  •  7,330 7,330
    • View Profile
Re: machine drags when backlash compensation turned on.
« Reply #3 on: February 07, 2010, 05:55:55 PM »