Clamping A Workpiece Into The Three Jaw Chuck; Taper Turning; Taper Turning With The Top Slide - Optimum OPTI turn TU 3008G Operating Manual

4.13.3 Clamping a workpiece into the three jaw chuck

When the workpiece is being clamped unprofessionally, there is a risk of injury as the workpiece
may fly off or the jaws may break. The following examples do not show all possible situations of
danger.
Incorrect
4.14

Taper turning

4.14.1 Taper turning with the top slide

With the top slide short cone can be rotated. The scaling is performed up to 60° degree of
angle. It is also possible to adjust the top slide over the 60°- angular mark.

Loosen the two nuts at the left and right of the top slide.

Swivel the top slide.

Clamp the top slide again.
Operation
Version 1.1.6 - 2021-9-17
Clamping length too short,
overhang too long.
Clamping diameter too
large.
Workpiece is too heavy
and clamping jaw is too
short.
Clamping diameter too
small.
Translation of original instruction
Correct
Additional support over
center or rest.
Larger
lathe necessary.
Support over center,
enlarged jaw.
Enlarged jaws are not
available for this three-jaw
chuck.
Possibly use larger lathe.
Clamping on the largest
possible diameter.
TU3008G GB
37