HEIDENHAIN ITNC 530 - CONVERSATIONAL PROGRAMMING User Manual page 235

Programming a helix
Always enter the same algebraic sign for the direction of
rotation and the incremental total angle IPA. The tool may
otherwise move in a wrong path and damage the contour.
For the total angle IPA you can enter a value of
-99 999.9999° to +99 999.9999°.
U
Polar coordinates angle: Enter the total angle of
tool traverse along the helix in incremental
dimensions. After entering the angle, specify the
tool axis with an axis selection key.
U Coordinate: Enter the coordinate for the height of the
helix in incremental dimensions.
U
Direction of rotation DR
Clockwise helix: DR–
Counterclockwise helix: DR+
U Enter the radius compensation according to the table
above.
Example NC blocks: Thread M6 x 1 mm with 5 revolutions
12 CC X+40 Y+25
13 L Z+0 F100 M3
14 LP PR+3 PA+270 RL F50
15 CP IPA-1800 IZ+5 DR-
HEIDENHAIN iTNC 530 235