HEIDENHAIN ITNC 530 User Manual page 392

Stepping angle Q247 (incremental value): Angle
between two machining operations on a pitch circle.
If you enter an angle step of 0, the TNC will calculate
the angle step from the starting and stopping angles
and the number of pattern repetitions. If you enter a
value other than 0, the TNC will not take the stopping
angle into account. The sign for the angle step
determines the working direction (– = clockwise).
Number of repetitions Q241: Number of machining
operations on a pitch circle.
Set-up clearance Q200 (incremental value): Distance
between tool tip and workpiece surface. Enter a
positive value.
Workpiece surface coordinate Q203 (absolute
value): Coordinate of the workpiece surface.
2nd Set-up clearance Q204 (incremental value):
Coordinate in the tool axis at which no collision
between tool and workpiece (clamping devices) can
occur.
Moving to clearance height Q301: Definition of how
the tool is to move between machining processes.
0: Move between operations to the set-up clearance
1: Move between operations to 2nd set-up clearance
Type of traverse? Line=0/Arc=1 Q365: Definition of
the path function with which the tool is to move
between machining operations.
0: Move between operations on a straight line
1: Move between operations on the pitch circle
392
Example: NC blocks
53 CYCL DEF 220 POLAR PATTERN
Q216=+50 ;CENTER IN 1ST AXIS
Q217=+50 ;CENTER IN 2ND AXIS
Q244=80 ;PITCH CIRCLE DIA.
Q245=+0 ;STARTING ANGLE
Q246=+360 ;STOPPING ANGLE
Q247=+0 ;STEPPING ANGLE
Q241=8 ;NR OF REPETITIONS
Q200=2 ;SET-UP CLEARANCE
Q203=+30 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP CLEARANCE
Q301=1 ;TRAVERSE TO CLEARANCE HEIGHT
Q365=0 ;TYPE OF TRAVERSE
8 Programming: Cycles