
B–63523EN–1/03
3. MANUAL OPERATION
515
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.
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:
M29 S1000 ;
G91 G84 Z0 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 move the tapping axis.
WARNING
In this MDI programming, never specify commands to
position the tool at a drilling position and at point R.
Otherwise, undesirable tool movement will occur.
3 When the MDI program is executed, rigid tapping mode is set.
4 After rigid mode is active upon completion of MDI program
execution, switch to the handle mode by using the handle mode
selection switch.
CAUTION
At this point, never press the reset key. Otherwise, rigid
mode will be canceled.
5 To perform rigid tapping, select a tapping axis with the handle feed
axis select switch, and move the tapping axis with the manual handle.
To cancel rigid mode, specify G80, the same as normal cancellation of
rigid tapping. When the reset key is pressed, rigid mode is canceled, but
the canned cycle is not canceled.
When the rigid mode switch is to be set to “off” to cancel rigid mode
(when bit 2 (CRG) of parameter No. 5200 is set to 0), the G80 command
ends after the rigid mode switch is turned off.
The rotation direction of the spindle is determined by a specified tapping
cycle G code and setting bit 1 (HRM) of parameter No. 5203. For
example, when the HRM parameter is set to 0 in G84 mode, the spindle
makes forward rotations as the tapping axis moves in the minus direction.
(When the tapping axis moves in the plus direction, the spindle makes
reverse rotations.)
3.7
MANUAL RIGID
TAPPING (M SERIES)
General
D Basic Procedure
D Cancellation of rigid
mode
D Spindle rotation
direction