Programming manual.
CNC 8070
PATH CONTROL.
8.
Arc defined by three points (G09).
·165·
(REF: 1709)
8.5 Arc defined by three points (G09).
Function G09 allows a circular tool path (arc) to be defined, by programming the end point
and an intermediate point; this means, instead of programming the coordinates of the center,
it programs any intermediate point. The starting point of the arc is the starting point of the
movement.
Programming.
Program, along with function G09, the end point and an intermediate point of the arc. When
G09 is programmed it is not necessary to program the direction of movement (G02 or G03).
Programming format.
The programming format is the following; the arguments appear between curly brackets and
the optional ones, between angle brackets.
G09 X..C{end_point} I..K{intermediate_point}
Coordinates of the end point of the arc
The end point may defined in cartesian or polar coordinates, both absolute and incremental.
Coordinates of the intermediate point of the arc.
The intermediate point must be defined in cartesian coordinates, using the letters "I", "J" or
"K”, depending on the active plane. These coordinates are affected by functions G90 and
G91.
Function G09 may not be used to programmed a full circle because all three points must be different.
X..C{end_point} End point of the arc.
Units: Millimeters, inches or degrees.
I..K{intermediate_point} Intermediate point of the arc.
Units: Millimeters, inches or degrees.
G09 G17 X50.87 Y38.45 I28.34 J34.58
Movement in cartesian coordinates.
G09 R20.23 Q45 I8 J-13.7
Movement in polar coordinates.
G17 G18 G19 Letters "I", "J" and "K" are associated with the first, second and third axis
of the channel respectively.
G20 Letters "I" and "J" are associated with the abscissa and ordinate axes of
the defined plane.
To Next Page
Loading...
