Machsupport Forum
General CNC Chat => Building or Buying a Wood routing table.. Beginnners guide.. => Topic started by: TomR on April 21, 2012, 12:37:31 PM
-
I am experiencing a racking problem on the Y axis gantry and looking for some ideas on how to correct this problem. I am new to the blog (my first post) and assume this is a common problem which has been previously addressed. Thus, sorry if I am kicking a dead horse.
Specifically, what I would like to do is have 2 stepper motors, each driving lead screws on either sides of the gantry. Also I would like to have 2 homing switches such that when running a homing routine the gantry is squared to the X axis in the process. I know Mach3 has a “slave” feature for such stepper configurations but not sure how this works or how to wire the motors and limit switches.
As background, the router has a table size of 24” square. The hardware consists of Probotix boards (PBX-RF breakout, 3 Probostep VX drivers) and unipolar steppers.
Thanks in advance for your help.
-
You'll need an additional drive for the second Y axis motor. Set up the additional motor as the A axis, and go to config > slaving and check the box to slave the A to the Y ( I think that's what you're saying). That's it. Both the Y and A axis should have their own home switch set up, and in General Config, make sure "Home Slave with Master" is NOT checked.
That's about it. Just make sure the A and Y axis have identical motor tuning and home speed settings.
-
Thanks for the quick reply. I think I understand what you are saying but I'm sure I'll be back with additional questions once I purchase the hardware.