System information

SECTION FOUR - PREPARATORY FUNCTIONS (G CODES)
Note: Parameter P150 is the pocket radius. If no finish stock is desired, parameters P153 and
P154 should be set to zero. The F20 programmed in N5 is the XY feedrate and the F5 in
N9 affects only the Z axis feed. Once parameters are set to a value they do not change
and can be utilized further in the program. When an autoroutine is called, any
parameters that are not re-initialized will default to the previous value of the parameter.
Circular finish outside (G26)
The G26 autoroutine is identical in operation to the G25 autoroutine except it cuts the outside of
a circular boss rather than the inside. Because the G26 needs to position to the outside of the
boss, it will use the following formula to calculate the distance from the center of the boss to the
pierce/retract point.
Distance = Circle + .1 + [3 X Tool ]
radius radius
Circular Finish Outside Program
N1 G20 G90 (Inch/Absolute)
N2 S1000 M3 D1 G43 H1 (spindle CW-1000 RPM, calls tool #1's offsets)
N3 F20 (X-Y feedrate)
N4 P150=1 (Boss radius)
N5 P153=0 (X-Y finish stock)
N6 P154=0 (Z finish stock)
N7 G26 G98 G41 G2 R.1 P199=0 Z-.5 V-.3 Q.2 F5
*1 *2 *3 *3 *4 *5 *6 *7 *8 *9
*1 Executes circle finish outside
*2 Return to initial point
*3 CW left or "G42 G3" CCW right
*4 Clearance plane
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