General Operating Instructions; Clamping Long Workpieces - Optimum Optiturn TU 2506VB Betriebsanleitung

ATTENTION!
This connection must not be disconnected until the thread is finished !
Starting the threading:
Radial infeed over the handwheel of the cross slide.

Switch the direction of rotation to counter clockwise rotation.

Start the machine and have the first cutting process run.

ATTENTION!
Always have the thumb ready on the OFF-switch in order to prevent a collision with the
workpiece or with the lathe chuck !
Immediately switch off the machine at the run out of the thread and cam the cutter out by

turning the handwheel of the cross slide.
Switch the direction of rotation to clockwise rotation.

Switch the machine on; move the lathe saddle to the starting point; switch the machine off.

Radial infeed over the handwheel of the cross slide.

Switch the direction of rotation to counter clockwise rotation.

Switch the machine on and have the second cutting process run.

Repeat this procedure as often as necessary until the depth of thread is achieved.

To check the thread you may use a thread gauge or a workpiece with an internal thread

M30 x 1.0
If the thread is having the exact size, the thread cutting process may be terminated. Now

you may again shift the operating lever of the lead-screw nut in standstill. In this way, the
connection between the lead-screw and the lathe saddle is interrupted.
Now the gearwheels for the longitudinal feed are to be mounted again!

4.19

General operating instructions

4.19.1 Clamping long workpieces


through the hollow shaft of the spindle
CAUTION!
Long rotating parts that 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.
EN TU2506VB
144 Translation of original instruction
Operation
Version 1.0 - 2020-12-22