Four-Jaw Chuck; Collet Chuck Unit And Collet Chucks; Fastening The Drill Chuck; Fixed Steady - Proxxon PD 230/E Manual Del Usuario

Four-jaw chuck

Round, oval, square and irregularly shaped work pieces can
be clamped as it is possible to adjust the jaws individually.
Centric or eccentric clamping is possible.
Unlike the three-jaw chuck, centring of the work piece must
be performed manually.
Important
Remove mains plug.
1. Detach the three-jaw chuck and attach the four-jaw chuck.
2. Open the four jaws, clean the contact faces and clamp the
work piece lightly according to visual estimation.
3. Move the support and turning tool onto the plane surface
of the work piece.
4. Turn the chuck by hand to establish symmetrical deviati-
ons.
5. Adjust by opening one of the jaws and re-set the opposite
jaw accordingly.
6. Tighten all four jaws evenly, alternating crosswise.
Important
In the normal clamping jaw position, only work pieces
with an edge of up to max. 30 mm long can be clamped.
The maximum length is 80 mm in the reverse position.
Larger work pieces are not securely held. Danger of accident.

Collet chuck unit and collet chucks

The collet chuck unit is especially suitable for processing
round parts with great precision. The truth of running is
considerably greater than when working with a jaw chuck.
Important
Remove mains plug.
1. Remove three fastening screws from the three-jaw chuck
and remove chuck.
2. Thoroughly clean the fit for the collet chuck mount 2
(Fig. 24) and the fit in the main spindle 1.
3. Attach the collet chuck mount 2 using four fastening
screws 3.
- 24 -
Note:
Note:
Important
Always use the correct collet chuck to suit the work piece.
Chucks with an oversized diameter are destroyed.
4. Insert the collet chuck 6 and loosely screw in the union nut
5.
Important
Never tighten the union nut when there is no work piece
inserted.
Remove the pins 4 (Fig. 24) for tightening the union nut 5
immediately after tightening.
5. Insert the appropriate work piece in the collet chuck and
tighten the union nut 5 using the tool pins 4.

Fastening the drill chuck

1. Remove the rotating centre from the sleeve. Thoroughly
clean the grease and dirt from the shank taper and chuck
bore.
2. Insert the journal in the sleeve and firmly push onto the
drill chuck.
Releasing the drill chuck is performed in the same way as the
rotating centre.

Fixed steady

The steady is particularly suitable for hollowing out long work
pieces with diameters up to 40 mm.
1. Release the fastening screw 4 (Fig. 25) and position retai-
ning plate 3 crosswise.
2. Place the steady on the bed guide and set to the required
position.
3. Swivel the retaining plate 3 parallel to the steady base and
tighten fastening screw 4.
4. Release all clamp screws 1 and drive the individual retai-
ning jaws 2 onto the work piece
Important
The jaws 2 must only touch the work piece and must not jam.
Otherwise there is a risk of the work piece surface becoming
scratched and the motor becoming overloaded.
If the work piece is not round and smooth at the support
point, it must first be turned round.
Lubricate the jaws and work piece regularly when turning.
Note: