HEIDENHAIN iTNC 530 (340 49x-02) ISO programming User Manual
Page 417
HEIDENHAIN iTNC 530
417
8.8 Cy
cles f
o
r Multipass Milling
8
Set-up clearance
Q200 (incremental value): Distance
between tool tip and the starting position in the tool
axis. If you are milling with machining strategy
Q389=2, the TNC moves the tool at the set-up
clearance over the current plunging depth to the
starting point of the next pass.
8
Clearance to side
Q357 (incremental value): Safety
clearance to the side of the workpiece when the tool
approaches the first plunging depth, and distance at
which the stepover occurs if the machining strategy
Q389=0 or Q389=2 is used.
8
2nd set-up clearance
Q204 (incremental value):
Coordinate in the tool axis at which no collision
between tool and workpiece (clamping devices) can
occur.
Example: NC blocks
N70 G232 FACE MILLING
Q389=2
;STRATEGY
Q225=+10
;STARTING PNT 1ST AXIS
Q226=+12
;STARTING PNT 2ND AXIS
Q227=+2.5
;STARTING PNT 3RD AXIS
Q386=-3
;END POINT IN 3RD AXIS
Q218=150
;1ST SIDE LENGTH
Q219=75
;2ND SIDE LENGTH
Q202=2
;MAX. PLUNGING DEPTH
Q369=0.5
;ALLOWANCE FOR FLOOR
Q370=1
;MAX. TOOL PATH OVERLAP
Q207=500
;FEED RATE FOR MILLING
Q385=800
;FEED RATE FOR FINISHING
Q253=2000
;F PRE-POSITIONING
Q200=2
;SET-UP CLEARANCE
Q357=2
;CLEARANCE TO SIDE
Q204=2
;2ND SET-UP CLEARANCE