142
96-8000 Rev AC
May 2010
Applications: Deep rough and finish pocketing.
The previous figures show the tool path during the pocket milling G-codes.
Example
G13 multiple-pass using
I, K, Q, L
, and G91:
This program uses G91 and an
L
count of
4
, so this cycle will execute a total
of four times. The
Z
depth increment is 0.500. This is multiplied by the
L
count,
making the total depth of this hole 2.000.
The G91 and
L
count can also be used in a G13 “I only” line.
Note: If geometry column of control Offsets display has a value inserted,
G12/G13 will read the data, whether a D0 is present or not. To cancel
cutter compensation insert a D00 in the program line, this will bypass the
value in the Offsets geometry column.
Program Example
Description
%
O4000
(0.500 entered in the Radius/Diameter
offset column)
T1 M06
(Tool #1 is a 0.500” diameter endmill)
G00 G90 G54 X0 Y0 S4000 M03
G43 H01 Z.1 M08
G01 Z0 F30.
G13 G91 Z-.5 I.400 K2.0 Q.400 L4
D01 F20.
G00 G90 Z1.0 M09
G28 G91 Y0 Z0
M30
%
G17 XY / G18 XZ / G19 YZ plane selection (Group 02)
The face of the workpiece to have a circular milling operation (G02, G03, G12,
G13) done to it must have two of the three main axes (X, Y and Z) selected.
One of three G codes is used to select the plane, G17 for XY, G18 for XZ, and
G19 for YZ. Each is modal and applies to all subsequent circular motions. The
default plane selection is G17, which means that a circular motion in the XY
plane can be programmed without selecting G17. Plane selection also applies
to G12 and G13, circular pocket milling, (always in the XY plane).
If cutter radius compensation is selected (G41 or G42), only use the XY plane
(G17) for circular motion.
G17 Defined - Circular motion with the operator looking down on the XY table
from above. This defines the motion of the tool relative to the table.
G18 Defined - Circular motion is defined as the motion for the operator looking
from the rear of the machine toward the front control panel.
G19 Defined - Circular motion is defined as the motion for the operator look
-
ing across the table from the side of the machine where the control panel is
Содержание 96-8000
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