Centroid Community CNC Support Forum

To get very repeatable homing on a lathe using either DMM ZRI or a proximity or hall effect sensor on the leadscrew pulley, and mechanical switches on the homing end of the axis, here is the setup and the cnct.hom file I used:

Z mechanical limit is on input 1
X mechanical limit is on input 2
Z Prox ...

... Plus license

My goal is to make the mill 5 Axis with full closed loop since RS422 scales with a DRO are already on the machine
I also will install ZRI home with index pulse from the scales/encoders on rotary axis
A and C axis will be driven with A6 Servos, XYZ with the old steppers CL57T and CL86T ...

... M91 - negative
M92/Z
M26/Z
M92/Y
M26/Y
M92/X
M26/X

I will go out to my machine to see what my file contents are. I use Zero Reference Indicator (ZRi) to accurately move to the same home position after hitting the limit switches...right now it would not help


Wow! That worked! I had to tweak it ...

If you do not have precise ZRI home, set part X with T0101 each time after homing..

Set X and Z ref for the tool arm once if the mounting is repeatable.

Probe all tools

Set Z for the current part

Make parts

Uwe

Here is how I setup ZRI Home on Acorn Six from Index pulse of an Aikron scale.

At the moment if an encoder input is used for a scale, it is not possible to read out the index pulse with CNC12 (Version 5.22)

But it is possible to use Z /Z from the scale to trigger an input with a F53055 Mosfet ...

... is from LeadShine, since they also provide LeadShine Motion Studio with them.

A6 comes with another tuning software (not very well translated) but a lot more functions in the drivers.
I want to try them because of full encoder outputs and OZC Encoder Z-phase open collector output for ZRI home

Uwe

... and do not need to connect to the VFD Direction Output

In Position mode they can be wired directly to the Headers.

They also have an output for ZRi Home and Inputs to switch them to different modes, like from speed to position ...

Price range is on the low side and delivers with complete 3m ...

... something on T0101, you have to remeasure all other tools if you set Part X and X Diam again with T0101

A way to avoid this is to have a precise ZRI home on X and use tool wear or retouch X in the tool lib for T0101 if you use another insert on T0101, but do not set X Diam again with the new ...

... something on T0101, you have to remeasure all other tools if you set Part X and X Diam again with T0101

A way to avoid this is to have a precise ZRI home on X and use tool wear or retouch X in the tool lib for T0101 if you use another insert on T0101, but do not set X Diam again with the new ...

... NOTE TO MOVE IN THE OPPOSITE DIRECTION USE M91 - negative
M92/Z
M26/Z
M92/Y
M26/Y
M92/X
M26/X

I will go out to my machine to see what my file contents are. I use Zero Reference Indicator (ZRi) to accurately move to the same home position after hitting the limit switches...right now it would not help