Sandvik Coromant Parting and grooving - users guide - Manual (Page 32)

30
Multiple grooving.
operations.
Plunge turning operation.
Methods of turning grooves
The most common applications for wide grooves or turning between shoulders are multiple
grooving, plunge turning or ramping. All three methods are roughing operations and have to
be followed by a separate finishing operation, see page 32.
A rule of thumb is that if the width of the groove is smaller than the depth – multiple groov-
ing should be used and vice versa for plunge turning. However for slender components ram-
ping may be used.
Plunge turning
Geometries TF and TM should be used for
plunge turning and ramping operations as
the inserts are made for both radial and axial
feeds.
Axial turning depth should not exceed
0.75 x width of the insert.
Multiple grooving
Geometry GM is the first choice in this
type of operation. Best tool life and swarf
is obtained by using an insert width to
produce full grooves first and then remove
the rings. This protects the corner radius
and directs the swarf into the middle of
the chip breaker. Choose ring width
0.6–0.8 x width of the insert.