Unibor EQ50 Guide page 3

t B C
hE ROaCh
If you are unfamiliar with the use of
annular (or broaching) cutters, take a few
minutes to read this guide - you will benefit
from the better performance and longer life
of the tool if you understand the concept.
Annular cutters only cut material at
the periphery of the hole, rather than
converting the entire hole to shavings. As
a result the time and energy required to
make the hole is lower than for a traditional
twist drill.
The broaching capacity of a machine
is therefore greater than the twist drill
capacity. The slug ejected after the cut also
has a higher scrap value than shavings.
C
utting OnCEpt
Power
required
Material
removed
3