Search found 104 matches

by George Butty
Thu Apr 11, 2024 4:24 pm
Forum: User Machines
Topic: 5 axis CNC Router/3d printer
Replies: 173
Views: 12223

Re: 5 axis CNC Router/3d printer

HI Tom, sorry about last post. Found the problem, had wrong Tool length offset. Looked good on first set of surfaces but
was off by a mile too.
George
by George Butty
Thu Apr 11, 2024 12:47 am
Forum: User Machines
Topic: 5 axis CNC Router/3d printer
Replies: 173
Views: 12223

Re: 5 axis CNC Router/3d printer

Hi Tom, solved my backlash problem. It was my gearbox for the B&C axis. Was missing shims on side of one gear set. Any ways ran into another strange problem. Not sure if it is a posting problem or not. I have attached two files and the larger file is a combination of two sets of surfaces I am trying...
by George Butty
Mon Mar 11, 2024 5:49 pm
Forum: User Machines
Topic: 5 axis CNC Router/3d printer
Replies: 173
Views: 12223

Re: 5 axis CNC Router/3d printer

Tom, can the backlash add on be changed to add on negative an no add in positive direction. That would be
a typical convention say in a manual lathe.

George
by George Butty
Mon Mar 11, 2024 12:26 am
Forum: User Machines
Topic: 5 axis CNC Router/3d printer
Replies: 173
Views: 12223

Re: 5 axis CNC Router/3d printer

Tom , if you are talking about encoder error in the Tecnik, then the errors run average 0 to +- 3 counts on a 8000 cnts per rev. encoder when based on Kmotion sending a 0 position output. I will double check this number again because it does seem crazy low. One thing about those motors is they are a...
by George Butty
Sun Mar 10, 2024 7:32 pm
Forum: User Machines
Topic: 5 axis CNC Router/3d printer
Replies: 173
Views: 12223

Re: 5 axis CNC Router/3d printer

Hi Tom, I agree backlash comp sucks. At this point it does look mechanical because both Kmotion and Tecnik zero all the time. I have been playing with the backlash comp and it seems to be working. Does the MoveAtVel account for the Backlash value? It seems like it does not. Is there away to have it ...
by George Butty
Sat Mar 09, 2024 4:36 pm
Forum: User Machines
Topic: 5 axis CNC Router/3d printer
Replies: 173
Views: 12223

Re: 5 axis CNC Router/3d printer

hi Tom , found how to setup backlash. Will give it a try.

George
by George Butty
Sat Mar 09, 2024 4:13 pm
Forum: User Machines
Topic: 5 axis CNC Router/3d printer
Replies: 173
Views: 12223

Re: 5 axis CNC Router/3d printer

What does backlash rate mean?
George
by George Butty
Sat Mar 09, 2024 4:11 pm
Forum: User Machines
Topic: 5 axis CNC Router/3d printer
Replies: 173
Views: 12223

Re: 5 axis CNC Router/3d printer

HI Tom, found problem. It is backlash but not obvious. Kmotion is going back to zero and so is the motor.
I had to push lot harder than I thought to get the backlash to show. How does backlash comp work. Would this
help improve problem?

Thanks
George
by George Butty
Fri Mar 08, 2024 9:49 pm
Forum: User Machines
Topic: 5 axis CNC Router/3d printer
Replies: 173
Views: 12223

Re: 5 axis CNC Router/3d printer

OK and also I can check the Teknic motor positions as well by connecting to it.
Will do this tomorrow.

Thanks
George
by George Butty
Fri Mar 08, 2024 8:02 pm
Forum: User Machines
Topic: 5 axis CNC Router/3d printer
Replies: 173
Views: 12223

Re: 5 axis CNC Router/3d printer

Hi Tom, moving the bar by hand will deflect position but it bounces back to the position it was at before deflecting it+-. If at zero bounces back to zero. If at error position bounces back to error. The only value changing on DOR is the C angle. C rotation is very smooth and quiet and not aggressiv...