HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 265)

HEIDENHAIN CNC PILOT 4290 265
4.27 Milling Cy
cles R Radius of approaching/departing arc (default: 0)
„ R=0: Contour element is approached directly; feed to
starting point above the milling plane, then vertical plunge.
„ R>0: Tool moves on approaching/departing arc that
connects tangentially to the contour element.
„ R<0 for inside corners: Tool moves on approaching/
departing arc that connects tangentially to the contour
element.
„ R<0 for outside corners: Contour element is approached/
departed tangentially on a line
P Milling depth (default: depth from the contour description)
K Retraction plane (default: back to starting position)
„ Front or rear face: Retraction position in Z direction
„ Lateral surface: Retraction position in X direction (diameter)
D Starting element number when partial figures are machined.
V End element number when partial figures are machined.
The direction of contour definition for figures is
counterclockwise. The first contour element for figures:
„ Circular slot: The larger arc
„ Full circle: The upper semicircle
„ Rectangles, polygons and linear slots: The orientation angle
points to the first contour element.
A Sequence for “Milling, deburring”: A=0 (default=0)
NF Position mark—reference from which the cycle reads the hole
positions [1 to 127].
O Approach behavior (default: 0)
„ O=0: Vertical plunging
„ O=1: With predrilling
„ If NF is programmed: The cycle positions the milling
cutter above the first hole position saved in NF, then
plunges and mills the first section. If applicable, the cycle
positions the tool to the next pre-drilled hole and mills the
next section, etc.
„ If NF is not programmed: The tool plunges at the current
position and mills the section. If required, repeat this
operation for the next section, etc.
Parameters – milling