160
96-8000 Rev AC
May 2010
G90 Y-8.0
G91 X-1.0 L9
G90 Y-9.0
G91 X1.0 L9
G90 Y-10.0
G91 X-1.0 L9
G00 G90 G80 Z1.0 M09
G28 G91 Y0Z0
M30
%
Modifying Canned Cycles
In this section we will cover canned cycles that have to be customized in order
to make the programming of difficult parts easier.
Using G98 and G99 to clear clamps
– For example, A square part being held
to the table with one-inch tall table clamps. A program needs to be written to
clear the table clamps.
Program Example
Description
%
O4500
T1 M06
G00 G90 G54 X1.0 Y-1.0 S3500 M03
G43 H01 Z1.125 M08
G81 G99 Z-1.500 R.05 F20.
X2.0 G98
(Will return to starting point after execut-
ing cycle )
X6.0 G99
(Will return to reference plane after
executing cycle)
X8.0
X10.0
X12.0 G98
X16.0 G99
X18.0 G98
G00 G80 Z2.0 M09
G28 G91 Y0 Z0
M30
%
X, Y Plane Obstacle Avoidance In A Canned Cycle:
To avoid an obstacle in the X, Y plane during a canned cycle place an L0 in a
canned cycle line to make an X, Y move without executing the Z-axis canned
operation.
For example, having a six-inch square aluminum block, with a one-inch by one-
inch deep flange on each side, the print calls for two holes centered on each
side of the flange. The program to avoid each of the corners on the block.
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