HEIDENHAIN TNC 426 (280 476) User Manual
Page 288
HEIDENHAIN TNC 426, TNC 430
261
8.4 Cy
cles f
or milling poc
k
e
ts, st
uds and slots
7
7
7
7
Set-up clearance
Q200 (incremental value): Distance
between tool tip and workpiece surface.
7
7
7
7
Depth
Q201 (incremental value): Distance between
workpiece surface and bottom of pocket
7
7
7
7
Feed rate for plunging
Q206: Traversing speed of
the tool in mm/min when moving to depth. If you are
plunge-cutting into the material, enter a value lower
than that defined in Q207
7
7
7
7
Plunging depth
Q202 (incremental value): Infeed per
cut. Enter a value greater than 0.
7
7
7
7
Feed rate for milling
Q207: Traversing speed of the
tool in mm/min while milling.
7
7
7
7
Workpiece surface coordinate
Q203 (absolute
value): Coordinate of the workpiece surface
7
7
7
7
2nd set-up clearance
Q204 (incremental value):
Coordinate in the tool axis at which no collision
between tool and workpiece (clamping devices) can
occur.
7
7
7
7
Center in 1st axis
Q216 (absolute value): Center of
the pocket in the reference axis of the working plane
7
7
7
7
Center in 2nd axis
Q217 (absolute value): Center of
the pocket in the minor axis of the working plane
7
7
7
7
First side length
Q218 (incremental value): Pocket
length, parallel to the reference axis of the working
plane.
7
7
7
7
Second side length
Q219 (incremental value): Pocket
length, parallel to the minor axis of the working plane
7
7
7
7
Corner radius
Q220: Radius of the pocket corner If
you make no entry here, the TNC assumes that the
corner radius is equal to the tool radius.
7
7
7
7
Allowance in 1st axis
Q221 (incremental value):
Allowance for pre-positioning in the reference axis of
the working plane referenced to the length of the
pocket.
Example: NC blocks
34 CYCL DEF 212 POCKET FINISHING
Q200=2 ;SET-UP CLEARANCE
Q201=-20 ;DEPTH
Q206=150 ;FEED RATE FOR PLUNGING
Q202=5 ;PLUNGING DEPTH
Q207=500 ;FEED RATE FOR MILLING
Q203=+30 ;SURFACE COORDINATE
Q204=50 ;2ND SET-UP CLEARANCE
Q216=+50 ;CENTER IN 1ST AXIS
Q217=+50 ;CENTER IN 2ND AXIS
Q218=80 ;FIRST SIDE LENGTH
Q219=60 ;SECOND SIDE LENGTH
Q220=5 ;CORNER RADIUS
Q221=0 ;ALLOWANCE