HEIDENHAIN SW 68894x-02 - Manual (Page 255)

HEIDENHAIN CNC PILOT 640 255
4.5
Recessing
cy
cles
Examples of recessing cycles
Recess outside
The machining operation is to be executed first with the Recessing,
radial—expanded
cycle, taking oversizes into account. This contour
area is to be finished subsequently with Recessing, radial
finishing, expanded.
The rounding arcs in the corners of the contour valley and the oblique
surfaces at the contour start and end are also machined in "expanded
mode."
Be sure to enter the correct values for the parameters contour
starting point X1, Z1
and contour end point X2, Z2. These
parameters determine the cutting and infeed directions—in this
example, external machining and infeed in negative Z-axis direction.
Tool data
 Turning tool (for external machining)
 WO = 1 (tool orientation)
 SB = 4 (cutting width 4 mm)