hy proto there are also other methods :

1) after the cutting tool finished, move the 2nd spindle towards left : travel should be insert_width-a_bit : if there is no gap, the machine should sense this, and stop

2) after the 2nd spindle has gone to its home position, with both chucks clamped, trigger a dual comand, at same moment, each one for each spindle : like "break" on 1st spindle + "orientation" on 2nd spindle

if the material was not cut, the machine should raise an error, and the stress on spindles should be minimal




but don't you receive an error for chuck un-clamped ? if the cut-off tool failed, then the 2nd spindle should not be able to move, because the part is clamped also by the 1st spindle; or does the material slides inside the jaws ?

what happens when the cut-off fails ? is the material pulled by the 2nd spindle, and jaws from 1st spindle are damaged ? if the material remains in 1st spindle, you can simply trigger an rpm comand for the 2nd chuck, after it has gone to home position, and this should raise the chuck not-clamp error

kindly