Optimum OPTI turn TU 3008G Operating Manual page 39

by one calculation step (summary)
100 mm x (D - d)
Vo =
2 x L
Example:
D = 30.0 mm ; d = 24.0 mm ; L = 22.0 mm
100 mm x (30 mm - 24 mm)
Vo =
2 x 22 mm
The stop measure (100mm) is to be put between a fixed unit stop and the bedslide. Put the
gauge with stand on the lathe bed and horizontally align the test prod with the test prod with
thetop slide (90° to the top slide). The twisting measure is calculated with the above mentioned
formula.
The top slide is twisted by this value (then set the gauge to zero). After removing the stop
measure, the bedslide will be aligned to the limit stop. The gauge must indicate the calculated
value "Vo" Then the workpiece and the tool are clamped and positioned (the bedslide is fixed).
The infeed is performed with the handwheel of the top slide. The depth of cut is advanced with
the handwheel of the cross slide.
Dog
Stop measure 100 mm
Img.4-15: Cone setting with stop measure
3. By measuring an existing cone with gauge and stand.
The stand is put on the top slide. The gauge is aligned horizontally and 90° to the top slide. The
top slide is approximately adjusted to the cone angle and the test prod brought in contact with
the cone surface (fix the bedslide). Now the top slide is twisted in a way that the gauge does not
indicate any travel of the pointer over the whole length of the cone (offset over the handwheel of
the top slide).
Then you may start reaming the lathe as described under point 2. The workpiece might be a
flange for lathe chucks or a face plate.
Operation
Version 1.1.6 - 2021-9-17
100 mm x 6 mm
=
44 mm
Measuring direction
Translation of original instruction
13.63 mm
Gauge
Advance of depth of cut
TU3008G GB
39