
3.MANUAL OPERATION B-63943EN-1/02
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3.4 MANUAL RIGID TAPPING
Overview
To execute rigid tapping, set rigid mode, then switch to handle mode
and move the tapping axis with a manual handle.
Manual rigid tapping is enabled by setting bit 0 (HRG) of parameter
No. 5203 to 1.
- Basic procedure
1 Stop the spindle and servo axes, then set MDI mode by using the
MDI mode selection switch.
2 Enter and execute the following program:
Example 1)
M series/T series (G code system B, C)
M29 S100 ;
G91 G84 Z0 F1000 ;
T
Example 2)
T series (G code system A)
M29 S100 ;
G84 W0 F1000 ;
The program above is required to determine a screw lead and set rigid
tapping mode. In this program, a tapping axis must always be
specified. Specify a value that does not operate the tapping axis.
G84 (G74) is specified for M series while G84 (G88) is specified for T
series.
WARNING
In this MDI programming, never specify commands
to position the tool at a drilling position and at point
R. Otherwise, the tool moves along an axis.
3 Close the position control loop of the spindle and set rigid
tapping mode by executing the entered program. At this time,
perform gear switching or other sequences with PMC as with
memory operation. Input the program as follows and then
execute it.
4 After rigid mode is set upon completion of MDI program
execution, switch to the handle mode by pressing the handle
switch among the mode selection switches.
CAUTION
At this time, never press the reset key. Otherwise,
rigid mode is canceled.