HEIDENHAIN CNC Pilot 4290 - Manual (Page 317)

HEIDENHAIN CNC PILOT 4290 305
Finishing – Hollowing (neutral tool)
(G890 – Q=4)
The IWG machines recess areas determined with the aid of the
”inward copying angle” (recesses: inward copying angle <= mtw).
During automatic generation, TURN PLUS selects a ”neutral finishing
tool”
Options (parameters)
X, Z: Cutting limit
Type of oversize is set by soft key
L, P: Different longitudinal/transverse oversize – generates
”oversize G57” before the cycle
L: Constant oversize – generates ”oversize G58” before the
cycle
Plunging: Machine descending contours ?
■ Yes
■ No
E: Reduced plunging feed rate with descending contours
Retraction:
■ Yes: Set the type of retraction by soft key
■ No (H=4): Tool remains at the end coordinate
H: Type of retraction – define by soft key
I, K: Retraction position with H=0, 1 or 2
Form element machining with ...: Define by soft key the form
elements, chamfers, etc. to be machined.
6.12 Int
er
activ
e
W
o
rking Plan Gener
ation (IWG)
The position defined in ”Cycle – Approach”
is assumed as proposed value for the
”Retraction position I,K”