Operation
Version 1.0.5 - 2020-12-09
43
Translation of original instruction
TX4414
EN
T
X
4414
_GB
_4.
fm
4.12.1 Clamping long workpieces
through the hollow shaft of the spindle
CAUTION!
Long rotating parts that have to protrude from the hollow shaft of the spindle must be
secured by the operator using suitable covers. A cover can be a sleeve that is mounted
on the headstock that, as a permanent safety device, completely covers the protruding
workpiece.
between the tips
CAUTION!
Long workpieces must be additionally supported. They are supported by the tailstock
sleeve and, if necessary, a rest.
with a lathe dog
CAUTION!
When clamping workpieces between the tips of the lathe while using a lathe dog, the
existing lathe chuck protection must be replaced with a circular lathe chuck protection.
Workpieces that require a high concentricity precision are machined between the centres. For
holding purposes, a centre hole is drilled into both plain machined faces of the workpiece.
Img. 4-7: Turning between centres
The lathe dog is clamped onto the workpiece. The driving bolt, which is screwed into the flange
for the lathe chuck, transmits the torque to the lathe dog.
The fixed centre glides into the centre hole of the workpiece on the spindle nose side. The fol-
low centre glides into the centre hole of the workpiece at the tailstock side.
Feed
Workpiece
Live centre
60
0
Workpiece
Lathe dog
Chuck flange
Driving bolt
Fixed
Centre 60
0
