OPTIMUM
M A S C H I N E N - G E R M A N Y
Version 1.0.1 2014-05-16
Page 131
Original operating instructions
TU2506 | TU2506V | TU2807 | TU2807V
GB
3.23
Tapping of external and internal threads
Threads with smaller diameters and standard thread pitches should be tapped manually on the
lathe with screw-taps or dies by turning the clamping chuck as this is more simple to produce.
CAUTION!
Pull off the mains plug of the lathe if you want to tap a thread as described above.
Bolts and nuts with large thread diameters, deviating thread pitches or special types of thread,
right-handed and left-handed threads may be produced by threading. For this manufacturing
there are as well tool holders and drill rods with exchangeable indexable inserts (one-edged or
multiple-edged).
Polished section for threading
The point angle or the shape for chasing tools is depending on the type of thread.
Also refer to:
The measure X must be larger than the depth of thread. Make save that no chip angle is being
ground as in this case there would be a strain of the profile.
Img.3-40:
Polished section
for threading
X
Img.3-41:
die
Img.3-42:
screw tap
