ACU-RITE CNC 3500i User Manual

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11 G-Code Edit, Help, & Advanced Features

.4 A

nced Pr

ogr

mming

The pocket is milled with a side draft angle of three degrees. Z is set
to a step-up increment of .02 in. #152 can be set to a desired value,
perhaps to determine the finish on the sidewalls of the pocket. In this
example, the pocket always has a depth of 1 in., and a draft angle of 3
degrees. The side lengths and Z step may be changed.

To make this program totally independent, the Z depth and draft angle
can be set to variables, and the additional calculations must then be
made.

This program requires the length and width of a rectangle, the cut per
side on the rectangle, and the number of passes around the rectangle.
Variables #150 to #199 are read only. They can be set only in the main
program.

X0 Y0

O100

LOOP((1/#103)+1);

* SET LOOP NUMBER (1 IN. DP / .02
STEP) + 1

G91

* SET INCREMENTAL MODAL

G1 Y(-#102);

* MILL L.H. SIDE

X#101;

* MILL BOTTOM SIDE

Y#102;

* MILL R.H. SIDE

X(-#101);

* MILL TOP SIDE, BACK TO START
POS'N

X(-#104) Y#104 Z#103;

* STEP UP/OVER IN X-Y AND Z

#101 = #101 + (#104*2);

* ADD STEPOVER TIMES 2 TO LONG
SIDES

#102 = #102 + (#104*2);

* ADD STEPOVER TIMES 2 TO SHORT
SIDES

END

* END LOOP

M99