Fixed Cycles: Drilling
3.1 Fundamentals
3
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HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
3.1 Fundamentals
Overview
The TNC offers the following cycles for all types of drilling
operations:
Soft key Cycle Page
240 CENTERING
With automatic pre-positioning, 2nd
set-up clearance, optional entry of the
centering diameter or centering depth
65
200 DRILLING
With automatic pre-positioning, 2nd
set-up clearance
67
201 REAMING
With automatic pre-positioning, 2nd
set-up clearance
69
202 BORING
With automatic pre-positioning, 2nd
set-up clearance
71
203 UNIVERSAL DRILLING
With automatic pre-positioning, 2nd
set-up clearance, chip breaking, and
decrementing
74
204 BACK BORING
With automatic pre-positioning, 2nd
set-up clearance
77
205 UNIVERSAL PECKING
With automatic pre-positioning, 2nd
set-up clearance, chip breaking, and
advanced stop distance
81
208 BORE MILLING
With automatic pre-positioning, 2nd
set-up clearance
85
241 SINGLE-LIP D.H.DRLNG
With automatic pre-positioning to
deepened starting point, shaft speed
and coolant definition
87
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