HEIDENHAIN SW 54843x-03 - Manual (Page 210)

210 Cycle programming
4.4 T
u
rn
ing cy
cles
Examples of turning cycles
Roughing and finishing an outside contour
The shaded area from AP (contour starting point) to EP (contour end
point) is rough-machined with the cycle Cut longitudinal—expanded,
taking oversizes into account. This contour area is to be finished
subsequently with the cycle Finishing cut longitudinal—expanded.
The rounding arc and the oblique cut at the contour end are also
machined in "expanded mode."
The parameters for contour starting point X1, Z1 and contour end
point X2, Z2
determine the cutting and infeed directions—in this
example, external machining and infeed in negative X-axis direction.
Tool data
 Turning tool (for external machining)
 TO = 1 (tool orientation)
 A = 93° (tool angle)
 B = 55° (point angle)