WEISS WBL290F, User Manual

Page: 18 / 48

18
Turning Between Centers
For turning between centers, it is necessary
to remove the chuck from the spindle. Fit
the MT3 center into the 5/3 reducing sleeve
(provided) and fit the reducing sleeve into
the spindle taper.
Mount the work-piece fitted with the driver
dog between the centers. The driver is
driven by a catch or face plate. See figure-
29.
Figure-29 Turning between centers
Important
Always use a small amount of grease
on the tailstock center to prevent
center tip from over heating.
Thread Cutting
SeveraI different threads can be cut using
the proper combination of gears and
settings.
Imperial Thread: when cutting inch
threads, the half nut and threading dial are
used to thread in a conventional manner.
The threading and feeding table on page-27
or on the headstock, specifies at which
point a thread can be entered using the
threading dial.
Metric Thread: The only difference in
metric thread cutting is that the half nut
must remain engaged during the entire
threading process. The thread dial can not
be utilized.
Figure-30 HaIf nut and threading diaI
Set the machine up for the desired thread
pitch.
Start the machine and engage the half nut.
when the tool reaches the end of the cut,
stop the machine by turning the motor off
and at the same time back the tool out off
the work-piece so that it clears the thread.
Do not disengage the half nut lever.
Reverse the motor direction allowing the
cutting tool to traverse back to the starting
point.
Repeat these steps until you have obtained
resuIts.