Collet Chuck Unit And Collet Chucks; Fastening The Drill Chuck; Fixed Steady; Repair And Maintenance - Proxxon PD 250/E Manual De Instrucciones

Collet chuck unit and collet chucks

(No. 24038)
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.
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.
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 (No. 24020)
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 (No. 24010)
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 retain-
ing 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 retain-
ing jaws 2 onto the work piece
- 24 -
Note:
Note:
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.
5. Check that the work piece is positioned in the steady free of
play and re-tighten clamp screws 1.

Repair and Maintenance

Cleaning

Always disconnect the mains plug for all adjustment and main-
tenance work! Risk of serious injuries or damage due to inad-
vertent starting up of the device, or hazard due to electric
shock!
1. After use, thoroughly clean all chips from the machine using
a brush or handbrush. Do not use compressed air for clean-
ing.
2. Regularly lubricate or oil all moving parts, spindles and
guides!
The outside of the housing can be cleaned with a soft, dry or
damp cloth. It is possible to use mild soap or other suitable
cleaning agent here. Solvents or cleaning agents containing
alcohol (e.g. petrol, cleaning alcohol etc.) should be avoided,
since these can attack the plastic housing casings as well as
wash off the lubricants.
Please observe:
Changing the power supply cord may only be carried out by our
Proxxon-Service-Department or a qualified specialist!
Adjusting the play of the guides (Fig. 27)
Even if the guides are regularly lubricated or oiled, it is unavoid-
able that the guides will exhibit play after some time due to
wear.
The procedure described here using the example of the upper
carriage is the same for all guides, therefore it applies analo-
gously to the other guides on your lathe. For that reason they
will not be treated separately here. Adjust the guides according
to the motto: As "tightly" as necessary, as easy running as pos-
sible!
Please consider: If guides are set too closely, this causes high-
er operating forces as well as increased wear!
1. Release and slightly unscrew the counter nuts 1 of the
adjusting screws 2 for the upper carriage 3 using an open-
end spanner 5.
2. Evenly turn in the adjusting screws 2 with an Allen key 4
until the play is eliminated.
3. Retighten the counter nuts 1. In the process, hold the
adjusting screws 2 in position with the fixed spanner 5 so
that they do not misadjust again.
4. Turn over the machine and slightly unscrew the set screw 2
(Fig. 28).
Caution!
Note: