System information

SECTION FOUR - PREPARATORY FUNCTIONS (G CODES)
Rectangular finish outside (G36)
The G36 autoroutine is used to remove finish stock around the outside of a rectangular boss. The
G36 autoroutine works in an identical manner to the G34 autoroutine. It starts in the center,
makes a rapid move to the outside of the part, then feeds the tool down. The circle to the edge is
always on the bottom side of the boss. The formula the CNC uses to calculate the distance from
the center to the feed down point is as follows.
Y = (3 X tool radius) + .1 + ½ Y pocket width
Rectangular Finish Outside Program
N1 G20 G90 (Inch/Absolute)
N2 S1000 M3 D1 G43 H1 (spindle CW 1000 RPM, calls tool #1's offsets)
N3 G00 X0 Y0 (rapid to X0 Y0)
N4 G98 (returns Z to initial level)
N5 F20 (X-Y feedrate)
N6 P150=.25 (corner radius)
N7 P153=0 (X-Y finish stock)
N8 P154=0 (Z finish stock)
N9 P151=4 (X frame dimension)
N10 P152=2 (Y frame dimension)
N11 G36 G41 G2 V-.25 R.1 Z-.5 Q.25 F10 P199=0
*1 *2 *3 *4 *5 *6 *7 *8
*1 Executes rectangular finish outside
*2 CW left or "G42 G3" CCW right
*3 First Z depth (If no V is specified the 1
st
Z depth is the clearance plane
minus the Z increment)
*4 Clearance plane
*5 Final Z depth
*6 Z increment
*7 Z feedrate
*8 Z plunge
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