HEIDENHAIN MANUALplus 4110 Pilot - Manual (Page 24)

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Recessing cycles
Undercut H
This cycle machines a “Form H” undercut. The workpiece is ap-
proached at a safety clearance. If you do not enter a value for W, it will
be calculated from K and R. The final point of the undercut is then
located at the “final point contour”.
Information on the cycle parameters:
R:
Undercut radius – default: no circular element
W: Plunge angle – default: W is calculated
Undercut K
The resulting contour geometry depends on the tool that is used.
Cycle run
1 Pre-position at an angle of 45° to safety clearance above “corner point
contour X1, Z1” in rapid traverse.
2 Plunge-cut at an angle of 45° – the path of traverse is calculated from
the parameter “undercut depth I”.
3 Retract to “start point X, Z“ on same path.
This cycle does not take any cutting radius compensation
values into account.