HEIDENHAIN iTNC 530 (340 49x-05) Pilot - Manual (Page 81)

81
Definin
g
Machining Operations
Unit 265 Helical Thread Drilling / Milling
Parameters on the overview form:
 T : Tool number or name (switchable via soft key)
 S : Spindle speed [rpm] or cutting speed [m/min or ipm]
 F: Feed rate for milling
 F: Countersinking feed rate [mm/min] or FU [mm/rev]
 Diameter : Nominal diameter of the thread
 Thread pitch : Pitch of the thread
 Depth : Depth of thread
 Countersink: Select whether countersinking occurs before or after
thread milling
 Depth at front: Depth for sinking at front.
 Offset at front: Distance by which the TNC moves the tool center
from the hole center
 Machining positions (see “Defining Machining Positions” on page
145.)
Additional parameters on the tool detail form:
 DL : Delta length for tool T
 DR : Delta radius for tool T
 M function : Any miscellaneous function M
 Spindle : Direction of spindle rotation. As a default, smarT.NC sets M3
 Tool preselect : If needed, this is the number of the next tool for faster
tool change (machine-dependent)