My first machine was belt driven and mach3 would calibrate. I changed to ball screws and i have been unable to calibrate. Any suggestions?
My first machine was belt driven and mach3 would calibrate. I changed to ball screws and i have been unable to calibrate. Any suggestions?
By "calibration" do you mean finding the correct steps-per-unit values?
Yes
Those are pretty easy to calculate without using Mach3's wizard. Post some information about your machine:
- ball screw thread pitch
- ball screw number of starts
- stepper motor degrees per step
- stepper driver number of microsteps per step
- any gearing between the stepper motor and the ball screw.
SFU1605 RM1605 1605 Ball Screw
Pitch is 5
Start is 5
Nema 23 57mm Stepper Motor High Torque
200 steps
You did not say what your microstepping is, but let's assume it's 8.
Then your steps-per-millimeter would be:
200*8/5=320.
If you are using inches, multiply 320 by 25.4.
P. S.
According to the Internet, SFU1605 is single-start, not 5-start. So it has 5mm thread pitch and 5mm lead.
16
Then 200*16/5=640 steps per mm.
Thank you for your help. When i am twicking movement when movement is more than requested do i add or substrat ?
Thank you.
If your ball screw is accurate (and it probably is), then the calibration should be spot on. But if you do need to tweak it, then BIGGER steps-per-unit means BIGGER movement.
edited. sorry, got it wrong the first time.