Optimum OPTIturn TU 2506 Betriebsanleitung Seite 124

OPTIMUM
M A S C H I N E N - G E R M A N Y
Img.3-27: Cone setting with stop measure
4. By offsetting the tailstock as the cone length is larger than the adjustable stroke of the top
slide.
The workpiece is clamped between two points, therefore center holes are required on the face.
They are to be drilled before removing the lathe chuck. The slaving of the workpiece is per-
formed by a pulling pin and a lathe carrier.
The calculated value "Vr" is the offset measure of the tailstock. The offset is monitored with the
gauge (also the return travel).
For this type of cone machining the lowest speed is used !
Annotation:
In order to check the position of the tailstock axis to the rotation axis, a shaft with two centering-
sis clamped between the points. The stand with the gauge is put on the bedslide. The gauge is
aligned 90° to the rotation axis and horizontally brought into contact with the shaft. The gauge
will pass along the shaft with the bedslide. There must not be any travel of the pointer along the
whole length of the shaft. If a deviation is being shown, the tailstock is to be corrected.
Calculation
Lw
----------------
Vr =

2 Kv
Lw
------- -
Vr max =
50
Example:
Kv = 1 : 40 ; Lw = 150 mm ; L = 100 mm
150

-------------- -
Vr = = 1 875mm

2 40
GB TU2506 | TU2506V | TU2807 | TU2807V
Page 124
D d –

or
------------ -
Vr =

2 L
The tailstock offset must not exceed the value
tumbles!
150
-------- -
Vr max =
50
Original operating instructions
Gauge
Advance of depth of cut
Lw
as the workpiece
"Vrmax"
= 3mm
Version 1.0.1 2014-05-16