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SINGLE-LIP DEEP-HOLE DRILLING (Cycle 241, DIN/ISO: G241) 3.10
Q428 Spindle speed for drilling?: Desired speed
for drilling. Input range 0 to 99999
Q429 M function for coolant on?: Miscellaneous
function for switching on the coolant. The TNC
switches the coolant on if the tool is in the hole at
Q379 STARTING POINT. Input range 0 to 999
Q430 M function for coolant off?: Miscellaneous
function for switching off the coolant. The TNC
switches the coolant off if the tool is at Q201
DEPTH. Input range 0 to 999
Q435 Dwell depth? (incremental): Coordinate in
the spindle axis at which the tool is to dwell. If 0 is
entered, the function is not active (standard setting)
Application: During machining of through-holes
some tools require a short dwell time before exiting
the bottom of the hole in order to transport the
chips to the top. Define a value smaller than Q201
DEPTH, input range 0 to 99999.9999.
Q401 Feed rate factor in %?: Factor by which
the TNC reduces the feed rate after Q435 DWELL
DEPTH has been reached. Input range 0 to 100
Q202 Maximum plunging depth? (incremental):
Infeed per cut. Q201 DEPTH does not have to be a
multiple of Q202. Input range 0 to 99999.9999
Q212 Decrement? (incremental): Value by which the
TNC decreases Q202 MAX. PLUNGING DEPTH after
each infeed. Input range 0 to 99999.9999
Q205 Minimum plunging depth? (incremental): If
you have entered Q212 DECREMENT,the TNC limits
the plunging depth to the value for Q205. Input
range 0 to 99999.9999
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HEIDENHAIN | TNC 320 | User's manual for cycle programming | 9/2016
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