Defining A Pitch Circle - HEIDENHAIN TNC 640 User Manual

Using Fixed Cycles | PATTERN DEF pattern definition

Defining a pitch circle

If you have defined a Workpiece surface in Z not equal to
0, then this value is effective in addition to the workpiece
surface Q203 that you defined in the machining cycle.
Bolt-hole circle center X (absolute): Coordinate of
the center point of the circle in the X axis
Bolt-hole circle center Y (absolute): Coordinate
of the center point of the circle in the Y axis
Bolt-hole circle diameter: Diameter of the bolt
hole circle
Starting angle: Polar angle of the first machining
position. Reference axis: Reference axis of the
active machining plane (e.g. X for tool axis Z). You
can enter a positive or negative value
Stepping angle/Stopping angle: Incremental polar
angle between two machining positions. You can
enter a positive or negative value. As an alternative
you can enter the end angle (switch via soft key).
Number of operations: Total number of machining
positions on the circle
Coordinate of workpiece surface (absolute):
Enter Z coordinate at which machining is to begin
HEIDENHAIN | User's manual for cycle programming | 10/2017
NC blocks
10 L Z+100 R0 FMAX
11 PATTERN DEF PITCHCIRC1
(X+25 Y+33 D80 START+45 STEP30
NUM8 Z+0)
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