Indexable Inserts - Optimum Optiturn TU 2807VB Betriebsanleitung

4.18.3 Indexable inserts

For indexable inserts there are partial profile and full profile indexable inserts. The partial pro-
file indexable inserts are designed for a certain pitch range (e.g. 0.5 - 3 mm).
The partial profile indexable insert is optimally appropriate for the single-piece production.

The full profile indexable insert is only designed for a certain pitch.

Img.4-31: partial profile indexable insert
Determining the machining method of right-handed and left-handed threads:
Right-handed tool holders or drill rods are used. In order to top right-handed threads the feed
direction towards the clamping chuck is selected and the machine spindle turns to the right (the
turning direction of the machine spindle is determined when you look into the spindle from the
rear side). If a left-handed thread is to be tapped, the feed direction is selected away from the
clamping chuck in direction to the tailstock and the machine spindle turns to the right.
Img.4-33: right-handed thread with the machine
spindle turning to the right
As for thread cutting there are other conditions as for longitudinal turning, the forward cutter
must show a larger clearance as the pitch angle of the thread.
Img.4-35: Pitch angle
EN
TU2807VB
132
Feed direction
Translation of original instruction
Img.4-32: full profile indexable insert
Feed direction
Img.4-34: left-handed thread with the machine spin-
dle turning to the right
Pitch angle
Pitch

---------------- -
tan =
D

P
P


2
Operation
Version 1.0 - 2020-12-22