HEIDENHAIN TNC 426 (280 476) Pilot - Manual (Page 35)

36
Working with Cycles
Cycles for Machining Holes
and Threads
1 PECKING Page 39
200 DRILLING Page 40
201 REAMING Page 41
202 BORING Page 42
203 UNIVERSAL DRILLING Page 43
204 COUNTERBORE BACK Page 44
205 UNIVERSAL PECKING Page 45
208 BORE MILLING Page 46
2 TAPPING Page 47
206 TAPPING NEW Page 48
17 RIGID TAPPING Page 48
207 RIGID TAPPING NEW Page 49
18 THREAD CUTTING Page 49
209 TAPPING W/ CHIP BRKG Page 50
262 THREAD MILLING Page 51
263 THREAD MLLNG/CNTSNKG Page 52
264 THREAD DRILLNG/MLLNG Page 53
265 HEL. THREAD DRLG/MLG Page 54
267 OUTSIDE THREAD MLLNG Page 55
Continued on next page
Working with Cycles
Certain frequently needed machining sequences are stored in the TNC
as cycles. Coordinate transformations and some special functions are
also available as cycles.
• In a cycle, positioning data entered in the tool axis are
always incremental, even without the I key!
• The algebraic sign of the cycle parameter depth determines
the working direction!
Example
6 CYCL DEF 1.0 PECKING
7 CYCL DEF 1.1 SET UP 2
8 CYCL DEF 1.2 DEPTH -15
9 CYCL DEF 1.3 PECKG 10
...
Feed rates are entered in mm/min, the dwell time in seconds.
Defining cycles
Select the Cycle Overview:
Select the cycle group
Select the cycle