HEIDENHAIN TNC 410 ISO Programming User Manual
Page 220
194
8 Programming: Cycles
8.3 Cy
cles f
o
r Dr
illing
, T
a
p
p
ing
and
Th
read Millin
g
U
U
U
U
Set-up clearance
Q200 (incremental value): Distance
between tool tip and workpiece surface.
U
U
U
U
Depth of counterbore
Q249 (incremental value):
Distance between underside of workpiece and the
top of the hole. A positive sign means the hole will be
bored in the positive spindle axis direction.
U
U
U
U
Material thickness
Q250 (incremental value):
Thickness of the workpiece.
U
U
U
U
Off-center distance
Q251 (incremental value): Off-
center distance for the boring bar; value from tool
data sheet.
U
U
U
U
Tool edge height
Q252 (incremental value): Distance
between the underside of the boring bar and the main
cutting tooth; value from tool data sheet
U
U
U
U
Feed rate for pre-positioning
Q253: Traversing
speed of the tool when moving in and out of the
workpiece, in mm/min.
U
U
U
U
Feed rate for counterboring
Q254: Traversing
speed of the tool during counterboring in mm/min.
U
U
U
U
Dwell time
Q255: Dwell time in seconds at the top of
the bore hole.
U
U
U
U
Workpiece surface coordinate
Q203 (absolute
value): Coordinate of the workpiece surface.
U
U
U
U
2nd set-up clearance
Q204 (incremental value):
Coordinate in the tool axis at which no collision
between tool and workpiece (clamping devices) can
occur.
U
U
U
U
Disengaging direction (0/1/2/3/4)
Q214:
Determine the direction in which the TNC displaces
the tool by the off-center distance (after spindle
orientation).
1: Displace tool in the negative reference axis direction
2: Displace tool in the negative secondary axis direction
3: Displace tool in the positive reference axis direction
4: Displace tool in the positive secondary axis direction
Example: NC block
N11 G204 Q200=2 Q249=+5 Q250=20 Q251=3.5
Q252=15 Q253=750 Q254=200 Q255=0
Q203=+20 Q204=50 Q214=1 Q336=0 *
Danger of collision
Check the position of the tool tip when you program a
spindle orientation to the angle that you enter in Q336 (for
example, in the Positioning with Manual Data Input mode
of operation). Set the angle so that the tool tip is parallel to
a coordinate axis. Select a disengaging direction in which
the tool moves away from the edge of the hole.