Defining A Pitch Circle - HEIDENHAIN TNC 620 User Manual

2
Using Fixed Cycles
2.3 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 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: Reference 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
Workpiece surface coordinate (absolute): Enter Z
coordinate at which machining is to begin
60
NC blocks
10 L Z+100 R0 FMAX
11 PATTERN DEF PITCHCIRC1
(X+25 Y+33 D80 START+45 STEP30
NUM8 Z+0)
TNC 620 | User's Manual Cycle Programming | 3/2014