HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 229)

HEIDENHAIN CNC PILOT 4290 229
4.20 Cont
our
-Based T
u
rn
ing Cy
cles
The CNC PILOT uses the tool definition to distinguish between
external and internal machining.
Undercuts are machined if they are programmed and if tool geometry
permits.
H Type of retraction (default: 3)
Tool backs off at 45° against the machining direction and
moves as follows to the position I, K:
„ H=0: Diagonal
„ H=1: First X, then Z direction
„ H=2: First Z, then X direction
„ H=3: Remains at safety clearance
„ H=4: No traverse—tool remains on the end coordinate
X Cutting limit (diameter value)—(default: no cutting limit)
Z Cutting limit (default: no cutting limit)
D Omit elements (default: 1). Use the omit codes listed in the
table at right to omit individual elements, or the following
codes to skip execution of recesses, undercuts and relief
turns.
G22 G23
H0 G23
H1 G25
H4 G25
H5/6 G25
H7/8 G25
H9
D=0 • • • • • • •
D=1 • • – – – – –
D=2 • • – • • • •
D=3 • • • – – – –
D=4 • • – – • – –
D=5 • • – – – – •
D=6 • • – • – • •
D=7 – – – – – – –
“•”: Do not machine the elements
I End point that is approached at the end of the cycle (diameter
value)
K End point that is appropriate at the end of the cycle
O Feed rate reduction for circular elements (default: 0)
„ O=0: Feed rate reduction active
„ O=1: No feed rate reduction
Parameters