HEIDENHAIN TNC 640 (34059x-05) Cycle programming - Manual (Page 68)

Using Fixed Cycles
2.3 PATTERN DEF pattern definition
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TNC 640 | User's Manual Cycle Programming | 1/2015
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 circle center in the X axis
Bolt-hole circle center Y (absolute): Coordinate of
the circle center 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: Major axis of the active
machining plane (e.g. X for tool axis Z). You can
enter a positive or negative value
Stepping angle/end 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 repetitions: Total number of machining
positions on the circle
Coordinate of workpiece surface (absolute): Enter
Z coordinate at which machining is to begin
NC blocks
10 L Z+100 R0 FMAX
11 PATTERN DEF PITCHCIRC1
(X+25 Y+33 D80 START+45 STEP30
NUM8 Z+0)