Sandvik Coromant Threading - Manual (Page 34)

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z z
2. Applications – Thread turning
Thread deburring
Burrs which appear at the start of the thread can cause problems
and should be removed. This is especially important, for example,
in the hydraulics and food processing industry where tolerance and
quality demands are high.
Burrs tend to form at the start of a thread before the insert cre-
ates the full profi le, mostly in difffi cult stainless steels and duplex
materials - thread deburring is achieved with standard turning tools
(mainly CoroCut inserts).
An important consideration is correct positioning of the deburring
insert in relation to the thread, pitch and thread cycle.
Setting instructions
1. Set the zero point of the threading insert.
2. Measure the zero point on the CoroCut insert.
3. Offset the CoroCut insert with z (see main
catalogue).
How to deburr a thread
1. Use a standard thread cycle with the recom-
mended infeed data. The tool should enter the
thread at a 45° angle.
2. Use the same thread program, with the same
cutting speed and a CoroCut insert, at half the
number of passes. Program the deburring length
to 1 x pitch, and measure the zero-point accord-
ing to the images below.