HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 521)

HEIDENHAIN CNC PILOT 4290 521
6.14 Int
e
ra
ctiv
e W
o
rk
ing Plan Gener
a
tion (IWG)
Finishing
The IWG presents the following finishing operations for selection
(“Finishing” drop-down menu):
„ Finishing using cycle G890:
„ Contour machining
„ Residual-contour machining
„ Finishing hollowing (neutral tool)
„ Finishing using special functions:
„ Clearance turning: see “Finishing – Clearance turning” on
page 524
„ Undercuts: see “Finishing – undercut” on page 524
Soft keys
Longitudinal/constant oversize
“Approach” soft keys
Automatic selection of the mode of
approach
First X, then Z direction
First Z, then X direction
“Retract” soft keys
Diagonally to retraction position
First X, then Z direction
First Z, then X direction
Retract to safety clearance
Parameters
X Cutting limit
Z Cutting limit
L Depending on the soft-key setting:
„ Longitudinal oversize
„ Constant oversize (generates “Oversize G58” before the
cycle)
P Transverse oversize
Plunge-cutting (machine descending contours)?
„ Yes
„ No
E Reduced plunging feed rate with descending contours
Approach
„ Yes: “Mode of approach Q” (define by soft key)
„ No (Q=3): Tool is located near the starting point of the
contour area
Q Type of approach (see soft key table)
„ Q=0: The IWG checks the following types of approach:
„ Diagonal approach
„ First X, then Z direction
„ Equidistant around the barrier
„ Omission of the first contour element if the starting
position is inaccessible
„ Q=1: First X, then Z direction
„ Q=2: First Z, then X direction
Retract
„ Yes: “Type of retraction H” (define by soft key)
„ No (H=4): Tool remains on the end coordinate