B-63324EN/03 PROGRAMMING 13.FUNCTIONS TO SIMPLIFY PROGRAMMING
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13.2.1 Rigid Tapping (G84.2)
When the spindle motor is controlled as if it were a servo motor, a
tapping cycle can be sped up.
The only difference from the reverse rigid tapping cycle (G84.3) is the
spindle rotation direction in tapping.
After positioning along the X- and Y-axes, rapid traverse is performed
to point R.
Tapping is performed from point R to point Z. When tapping is
completed, the spindle is stopped and a dwell is performed . The
spindle is then rotated in the reverse direction, the tool is retracted to
point R, then the spindle is stopped. Rapid traverse to initial level is
then performed for G98.
While tapping is being performed, the feedrate override and spindle
override are assumed to be 100%.
However, the speed for extraction (operation 5) can be overridden by
up to 200% depending on the setting at parameter No.5883.
G84.2 X_ Y_ Z_ R_ P_ F_ L_ S_ ;
X_ Y_: Hole position data
Z_ : The distance from point R to the bottom of the hole and the position of
the bottom of the hole
R_ : The distance from the initial level to point R level
P_ : Dwell time at the bottom of the hole and at point R when a return is
F_ : Cutting feedrate
L_ : Number of repeats (Only for necessity of repeat)
Point R level
Point R level
Spindle stop Spindle CCW
S_ : Spindle speed