HEIDENHAIN TNC 407 (280 580) User Manual - Manual (Page 209)

8-2
8 Cycles
TNC 407/TNC 415 B/TNC 425
ENT
CYCL
DEF
1 7
ENT
GOTO
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8.1 General Overview
Frequently recurring machining sequences which comprise several
working steps are stored in the control memory as standard cycles.
Coordinate transformations and other special functions are also provided
as standard cycles.
Cycles are subdivided into:
• Simple fixed cycles, such as pecking and tapping as well as the milling
operations slot milling, rectangular pocket milling and circular pocket
milling.
• SL (Subcontour List) Cycles, which allow machining of relatively
complex contours composed of several overlapping subcontours.
• SL Cycles for contour-oriented machining. During rough-out and
finishing, the tool follows the contour as defined in the SL cycles. The
cutter infeed positions are determined automatically by the control.
• Coordinate transformation cycles, which enable datum shift, rotation,
mirror image, enlarging and reducing for various contours.
• Special cycles, such as dwell time, program call, oriented spindle stop
and tilting the working plane.
Programming a cycle
Defining a cycle
Pressing the CYCL DEF key opens the cycle directory. Select the desired
cycle and program it in the dialog. The following example illustrates how
any cycle can be defined:
Open cycle directory.
CYCL DEF 1 PECKING
Select, for example, cycle 17 via the vertical arrow keys.
Address the desired cycle directly with GOTO.
CYCL DEF 17 RIGID TAPPING
Confirm entry.