TOMATECH AUTOMATION
� When the block for rigid tapping specifies M code used to clamp the spindle, Mβ is
output.
Note: α value is set in №170, β＝α＋1, so, these corresponding M codes in PLC are executed.
Rigid tapping sequence
Taking example of G84 right-hand tapping, explain the creation, execution and
cancellation of rigid tapping.
Creation and execution of rigid tapping
The spindle rotation operation is defined that the rotary axis is switched to the position
control mode(i.e. send the position mode switch signal to the servo spindle), and the
system checks the position mode arrival signal of the servo spindle.
Rigid tapping cancellation
The cancellation methods of rigid tapping are shown below:
1） G80 cancels the rigid tapping mode;
2） G codes commands other cycles;
3） Other G codes in Group 01;
4） CNC resets.
The falling edge of F76.3 signal cancels the rigid tapping mode signal.
(a) RTCRG(№186＃2) is set to ‘1’ when:
The system executes directly the next block instead of waiting the rigid tapping mode
signal RGTAP<G61＃0> to become ‘0’.
Rigid tapping cancellation is shown below:
(b) RTCRG(№186＃2) is set to ‘0’ when:
Wait the rigid tapping mode signal RGTAP<G61＃0> to become ‘0’ and then execute the
next block. Rigid tapping cancellation is shown below:
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