Optimum OPTIturn TU 2506 Betriebsanleitung Seite 139

Abb.3-51: radial infeed
Abb.3-52: Alternate infeed
The cutting point is slit slightly by turning the handwheel of the cross slide the scale is turned to
zero. This is the point of departure for the infeed of the depth of thread.
The scale of the top slide is also set to zero (this is important for the lateral offset whenturning
threads with larger pitches).
The cutting point is set just in front of the starting point of the start of the thread by actuating
thehandwheel of the bedslide.
The cutting point is set just in front of the starting point of the start of the thread by actuating
thehandwheel of the bedslide. With this connection, the adjusted thread pitch is transferred to
the bedslide and to the tool holder.
ATTENTION!
This connection must not be disconnected until the thread is finished!
Starting the threading:

Radial infeed over the handwheel of the cross slide.

Turn the change-over, switch to the right

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 clamping chuck !

Immediately turn off the machine at the run out of the thread and cam the cutter out by turn-
ing the handwheel of the cross slide.

Turn the change-over, switch to the left.

Turn the machine on and return the bedslide to the starting point and switch the machine
off.
Version 1.0.1 2014-05-16
The depth of thread is manufactured in
various passes. The infeed is to be
reduced after each pass.
The first pass takes place with an infeed of
0.1 - 0.15 mm
For the last pass the infeed shall not be
below 0.04 mm.
For pitches up to 1.5 mm the infeed may
be radial.
For our example 5 to 7 passes are being
determined.
For larger pitches the alternate flank
infeed is selected. The top slide is from the
2nd passage in each case 0.05 - 0.10 mm
adjusted alternately to the left and right.
The last two passes are performed with-
out lateral offset. When the depth of
thread is achieved, two passes are per-
formed without infeed.
To machine internal threads, about 2
passes shall be selected additionally for
the infeed (drill rods are more instable).
TU2506 | TU2506V | TU2807 | TU2807V
Original operating instructions
OPTIMUM
M A S C H I N E N - G E R M A N Y
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Page 139