
B-63783EN-1/01 9.SPINDLE FUNCTION
- 911 -
- Orientation function
Before rigid tapping, spindle orientation can be performed.
After positioning along the X- and Y-axes, rapid traverse is performed
to the point R level. At the point R level, spindle orientation is
performed. (The only difference between G84.2 and G84.3 is the
direction of spindle rotation in operations 3 and 5.)
CAUTION
1 The orientation function is enabled only when the
number of pulses from the position coder is 4096, and
the gear ratio between the spindle and position coder is
as follows:
1 : 2
n
(n: Integer not less than 0)
2 When a serial interface spindle is used, orientation is
performed in the direction set by bit 4 (SVO) of parameter
No. 3000, regardless of the sign specified in I.
3 The orientation command is valid only when specified in
the first block that enters rigid tapping mode. Orientation
commands specified in the second and subsequent
blocks in rigid tapping mode are all ignored.
G84.2/G84.3 (G98) G84.2/G84.3 (G99)
G84.2 (or G84.3) X_Y_Z_R_P_F_L_I_ ;
X_ Y_: Hole position data
Z_ : Distance from point R to a hole bottom, and hole position
R_ : Distance from initial level to point R
P_ : Dwell duration at a hole bottom and upon return to point R
F_ : Cutting feedrate
L_ : Number of repeats (only when repeats are required)
Initial level
Point R
Spindle
stop
Point Z
P
R point level
Operation 2
Operation 1
Operation 6
Operation 3
Operation 4
Operation 5
Spindle
stop
Reverse
spindle
rotation
Point Z
P
R point level
Spindle
stop
Reverse
spindle
rotation
Spindle stop
Spindle stop
Spindle
stop
P
I_ : Orientation command
0 : Positive-direction orientation
- 0 : Negative-direction orientation
Spindle
orientation
Forward
spindle
rotation
Spindle
orientation
Forward
spindle
rotation
Point R
: Rapid traverse
: Z axis feed
: Dwell
P