Search found 7 matches
- Wed Jun 19, 2019 9:19 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Cheap DIY "laser" screw compensation
- Replies: 12
- Views: 5358
Re: Cheap DIY "laser" screw compensation
Muzzler, You are right - I double checked all the mechanics and found that my belt tension was not adequate. After fixing that my backlash was FAR less! I have updated my original posting with a new version of the code. The original one that I posted had some errors I also added a function in there ...
- Wed Jun 19, 2019 8:58 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Cheap DIY "laser" screw compensation
- Replies: 12
- Views: 5358
Re: Cheap DIY "laser" screw compensation
qjones,
I am using a cheap Chinese one that I found on amazon
Model number: jcs900-2ae
It seems to work well enough
I am using a cheap Chinese one that I found on amazon
Model number: jcs900-2ae
It seems to work well enough
- Mon Jun 17, 2019 10:15 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Cheap DIY "laser" screw compensation
- Replies: 12
- Views: 5358
Re: Cheap DIY "laser" screw compensation
Alan, Thanks for the input.. I have been working off the TB048 pdf - did not notice the newer one! That makes it much easier! Also looks like they made it super easy to do the pitch adjustment.. no more math! I'll follow those steps tomorrow and hopefully will have it all calibrated and ready to run...
- Mon Jun 17, 2019 5:11 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Cheap DIY "laser" screw compensation
- Replies: 12
- Views: 5358
Re: Cheap DIY "laser" screw compensation
Tom,
Thats what I was hoping - thanks for the confirmation.
I am going to re-do all my axis tomorrow with the backlash set at zero
Thats what I was hoping - thanks for the confirmation.
I am going to re-do all my axis tomorrow with the backlash set at zero
- Mon Jun 17, 2019 2:38 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Cheap DIY "laser" screw compensation
- Replies: 12
- Views: 5358
Re: Cheap DIY "laser" screw compensation
cnckeith, I will post some pictures after work tomorrow It is a 1986 Leadwell MCV-550E which used to have a Meldas system in it I replaced everything with acorn and dyn4 servos Quick question - when doing the "laser" screw compensation - is there still a requirement to enter backlash compe...
- Sun Jun 16, 2019 2:13 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Cheap DIY "laser" screw compensation
- Replies: 12
- Views: 5358
Re: Cheap DIY "laser" screw compensation
Muzzer, I included my Z axis .tab file in the zip file there - it shows the correction values for the whole length and back. Open it in notepad I have a 30+ year old machine that I have upgraded. The ballscrews on Z have over 7 thou of backlash yet I was able to dial it in very close by mapping it o...
- Sat Jun 15, 2019 3:50 pm
- Forum: Centroid Acorn CNC Controller
- Topic: Cheap DIY "laser" screw compensation
- Replies: 12
- Views: 5358
Cheap DIY "laser" screw compensation
Hey all, Just wanted to share a method that I came up with to dial in my screw compensation as accurately as possible without having to sit there writing down a bunch of figures.. Using a cheap DRO from amazon, I set it up on each of my axis to be measured I then hooked up the DRO to an ardunio usin...