HEIDENHAIN iTNC 530 (340 49x-06) Pilot - Manual (Page 83)

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Definin
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Mac
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Unit 265 Helical Thread Drilling / Milling
Parameters on the overview form:
U T : Tool number or name (switchable via soft key)
U S : Spindle speed [rpm] or cutting speed [m/min or ipm]
U F : Feed rate for milling
U F : Countersinking feed rate [mm/min] or FU [mm/rev]
U Diameter : Nominal diameter of the thread
U Thread pitch : Pitch of the thread
U Depth : Depth of the thread
U Countersink : Select whether countersinking occurs before or after
thread milling
U Depth at front : Depth for sinking at front
U Offset at front : Distance by which the TNC moves the tool center
from the hole center
U Machining positions (see “Defining Machining Positions” on page 149)
Additional parameters on the tool detail form:
U DL : Delta length for tool T
U DR : Delta radius for tool T
U M function : Any miscellaneous function M
U Spindle : Direction of spindle rotation. As a default, smarT.NC sets M3
U Tool preselect : If needed, this is the number of the next tool for faster
tool change (machine-dependent)