WABECO CC-D4000 E, Руководство по эксплуатации

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As shown in the diagram (2.2) the right-hand wheel on the tumbler gear is engaged in the gear-
wheel of the main spindle.
This setting is for LH threads, i.e. if the spindle is turning in an anti-clockwise direction (looking at
the chuck), then the tooling carriage will move away from the chuck.
If clamping bolt (36) is slackened, then the tumbler gear can be pivoted over to the right so that the
left-hand take-up gearwheel engages the gearwheel of the main spindle. With this setting you can
then do right-hand threads, or the slide can run as before (given the same direction of turn of the
main spindle) towards the chuck.
9.2.6 Protective cover for chuck
The main spindle of the machine will only run when the chuck protective hood (24) is
closed.
For safety reasons it is not possible to switch on the machine with the protective hood open.
9.3 Bed with leadscrew drive
9.3.1 Overload coupling
In order to avoid damage to the drive system of the leadscrew an overload coupling is fitted on the
leadscrew drive side. The coupling becomes effective when the machine is overloaded and also
when the machine hits an end stop in the longitudinal direction.
The coupling is pre-tensed via the hexagonal nuts (18) and are countered against each other.
9.3.2 Setting the bearing play on the leadscrew
On the RH side the leadscrew is placed radially in bearings in a bronze bushing (10) and axially in
two axial bearings (9;8). These two axial bearings allow the leadscrew (6) to be adjusted so that
there is no play.
If you have to adjust the setting of the bearings, then first of all the outer of the two capstan nuts
(14) must be slackened. Then the inner nut is turned against the axial bearing so that the lead-
screw has no more air axially.
Then the outer capstan nut is countered against the inner one.
9. Description of the modules
9.4 Tooling carriages