Hi all.
Using Mach3 Turn for the Lathe...
I have a strange motor speed happening when I reverse direction on my Z axis.
I do not have this issue when using mach3 Mill software tho.
I was going to try to explain it in words,,, but I could not,,so I took a video to show it.
(Build history)
Lathe is the 7X14 Sieg (micro mark Mill.)
http://www.micromark.com/MICROLUX-7X14-MINI-LATHE,8176.htmlI am using the hobbycnc pro driver board.
When I first started to convert the lathe to CNC,, I set up the X axis to drive the carrage only from the threading lead screw and used the Mach3MILL software to make some cuts..... This worked well with backlash compensation, no problems.
I am using backlash compensation, .0135" on that leadscrew at backlash speed of 100%. I do close and restart the program with any adjustment here.
Ive since mounted a motor (now the X axis) on the cross feed, and I have mounted the Z axis motor to the Z feed.
Motors are in 1/2 step and tuned properly per dial indicator verifications on each axis.
Now I am using the Mach3Turn software as I should be.
Here is the problem when using backlash compensation in Mach3Turn vs. Mach3Mill
http://tdracingrc.com/machining/Strange.wmvIn the video I jog, in one direction a few times,,, the velocity and accel work fine,, BUT when I reverse direction I get the strange movement.
I have made a few part with it this way,,, and accuracy is good on most features,, but,,,, this delay is causing some issues as the X takes off while the Z is winding down,, or up....
Can anyone offer some advice on this?
Any help is appreciated
I have changed accel rates and velocity rates to troubleshoot this issue. They do change, per new inputs, but still the reversing motor speeds are still weird.