HEIDENHAIN iTNC 530 (340 49x-03) Pilot - Manual (Page 29)

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Path functions
Helix (Only in Polar Coordinates)
Calculations (upward milling direction)
Path revolutions: n Thread revolutions + overrun at start and
end of thread
Total height: h Thread pitch P x path revolutions n
Incr. coord. angle: IPA Path revolutions n x 360°
Start angle: PA Angle for start of thread + angle for thread
overrun
Start coordinate: Z Pitch P x (path revolutions + thread
overrun at start of thread)
Y
X
Z
CC