HEIDENHAIN TNC 426 (280 476) Pilot - Manual (Page 71)

72
SL
Cycles
CONTOUR TRAIN (25)
This cycle is for entering data for machining an open contour that has
been defined in a contour subprogam.
CYCL DEF: Select Cycle 25 CONTOUR TRAIN
Milling depth Q1; incremental
Allowance for side Q3:
Finishing allowance in the working plane
Workpiece surface coordinates Q5:
Coordinates referenced to the workpiece datum; absolute
Clearance height Q7:
Height at which the tool cannot collide with the workpiece; absolute
Pecking depth Q10; incremental
Feed rate for pecking Q11
Feed rate for milling Q12
Climb or up-cut ? Up-cut = –1 Q15
• Climb milling: Q15 = +1
• Up-cut milling: Q15 = –1
• Alternately in reciprocating cuts: Q15 = 0
• Cycle 14 CONTOUR can have only one label number.
• A subprogram can hold no more than 128 line segments.