20 Custom Macro
20.18 Pocket-milling Macro Cycle
Instruction
G65 P9999 X Y Z I J K R F D E Q M S T
will start a
Prior to calling the cycle, the tool must be brought over the geometric center of the pocket in the selected plane, at a safety distance over the workpiece. At the end of the cycle the tool will be retracted to the same point.
The addresses in the block have the
following meaning: X = size of pocket in direction X
Y = size of pocket in direction Y Z = size of pocket in direction Z
Instructions G17, G18, G19 will define the length, width and depth of the pocket for the three coordinates. For
example, in case of G17 Z will be the depth of the pocket, the longer one of X and Y will be the length of pocket
(the shorter one will be the width thereof). Those values have to be
entered in absolute values as positive numbers.
R = the radius of the corners of the pocket. Rounding (if any) of the corners of the
pocket should be specified at address
R. Unless address R is filled, the rounding ofthe pocket's corners will be
rounded with the tool radius.
I = safety distance toward the depth of pocket in the case of G19
J = safety distance toward the depth of pocket in the case of G18
K = safety distance toward the depth of pocket in the case of G17
Depending on the plane selected, the safety allowance in the direction of the tool has to be specified at the addresses I(G19), J(G18) or K(G17) in the block. When the cycle is started, the control assumes that the tip of the tool is located at that distance from the surface of the workpiece. While the pocket is being milled, as soon as the material of a level is removed, the tool will be lifted to that distance so that it can be brought to the start point for milling the next level.
D= address of register containing the radius compensation of the tool
The
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