OPTIMUM
M A S C H I N E N - G E R M A N Y
Operation
Version 1.0.1 dated 2015-05-27
Page 40
Original operating instructions
TU3008 | TU3008V
GB
4.12.1 Adjusting the Camlock bolts to the workpiece holder
Insert all of the bolts in the screwed flange of the chuck, until the reference mark, the circular
reference line (F) is in line with the wall of the chuck flange surface and the semicircular
grooves are in line with the holes of the safety screw (E).
Fit the safety screw (E) into each bolt and tighten.
Make sure that the two contact sides (plate and shaft) are free from impurities.
Now the chuck can be mounted.
Before coupling the chuck to the shaft nose, check that the clamp bolts are in an unlocked posi-
tion.
Fasten the workpiece holder by turning the clamping bolts clockwise.
INFORMATION
The reference mark (F) on each Cam-lock bolt serves as an orientation for the correct
adjustment.
Img.4-13:
Cam-lock fixture
4.12.2 Lathe chuck
During turning, the workpiece is subject to cutting forces, weight forces and unbalance forces
which have to be absorbed by a sufficiently strong clamping force. Massive workpieces with
higher degrees of stiffness lead to a considerable loss of clamping force. This loss of clamping
force is lower for thin-walled, distortion-sensitive workpieces with less stiffness.
The maximum rotational speed of a lathe chuck may only be applied at maximum actuating
force and with perfectly working chucks.
Lathe chucks must be designed for the maximum rotational speed of the machine, the permissi-
ble lathe chuck speed with respective jaws and/or top jaws, as well as the maximum measured
static clamping force at maximum introduced force must be specified in the operating instruc-
tions for the lathe chuck or be indicated on the lathe chuck itself. Lathe chucks must comply
with EN 1550 standards. The minimum distance to the machine bed must not be less than 25
mm. The lathe chuck jaws must be covered by the lathe chuck shield and may not extend
beyond it.
WARNING!
Do not clamp any workpieces that exceed the permitted chucking capacity of the lathe
chuck. The clamping force of the chuck is too low if its capacity is being exceeded. The
clamping jaws may loosen.
Only use lathe chucks designed for the speed of the machine.
Do not use lathe chucks with an external diameter that is too large.
Please ensure that lathe chucks are manufactured to EN 1550 standards.