Sandvik Coromant Threading - Manual (Page 95)

95
5. Technical reference
Repeat this program for
CoroMill 327/CoroMill 328.
until the right thread depth is
achieved.
G00 Z-21.000
Move to required depth on centerline of the pre-drilled hole
G41 D... G01 X0.000 Y6.000 F994
Set approach path for entry loop
G03 X0.000 Y-8.000 Z-20.000 10.000 J-7.000 F121
Move to the contour starting point
G03 X0.000 Y-8.000 Z-18.000 10.000 J8.000 F249
Thread milling
G03 X0.000 Y-6.000 Z-17.000 10.000 J7.000
Move clear of the contour
G40 G01 X0.000 Y0.000
Re-set to centerline
G00 Z2.000
Retract from thread
You can use the RPRG value marked on the tool as starting value
for new thread milling cutters.
The feed rates of the radii have already been adjusted. If your
control reduces the feed rate for concave forms automatically, the
additionally reduced values for the circular path are not needed. If
you need to recalculate the feed for thread milling, see recommen-
dations on page 88-91.