Proxxon PD 230E, Руководство пользователя

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Note:
The sleeve can be clamped in any position by tightening the
screw
5 (Fig. 7).
3. Firmly push the cone of the lathe center 1 (Fig. 7) by hand
into the spindle sleeve.
The cone is firmly seated and cannot be pulled out from
the front.
4. To release an inserted tool, turn handwheel 3 to the left to
stop.
5. Then turn approx. one further turn against the resistance.
The taper is released and can be removed.
Selecting the turning tool
Important
For proper turning, it is essential that:
• the correct turning tool has been selected for the
appropriate purpose
• the blade of the turning tool is sharp
• the blade of the turning tool sits exactly in the "centre"
position
• and is operated at the correct speed.
Inside turning tools (a) (Fig. 8)
• are used for interior diameter turning.
Cut-off tools (b)
• for plunge-cutting grooves and cutting off work pieces.
Thread tools (c)
• are used for cutting outer threads.
Finishing or tapering tools (d)
• are used to achieve a clean surface when removing small
chips.
Right side tools (e)
• is used to cut as many turning chips as possible in the
right-hand direction of processing regardless of the quality
of the work piece surface (so-called “rough-cutting”).
Left side tools (f)
• are used to remove as many chips as possible in a short
time when machining towards the left, regardless of the
surface quality of the work piece.
Insert the cutting tool in the tool post
1. Unscrew both fastening screws 1 (Fig. 9) until the selected
turning tool 3 fits into the mount.
Important
Give the turning tool as short an overhang as possible.
Allowing the tool to project too far leads to vibrations,
imprecision and an unclean surface.
2. Insert the turning tool 3 and tighten the fastening screws
1.
3. Move the turning tool to the centre 4 and check whether
the height has been correctly adjusted.
Note:
For height deviations, small metal sheets 2 (e.g. valve sensor
gauges) must be placed beneath the complete surface.
Setting the spindle speeds
Important
Always disconnect the mains plug before working on the
drive gearbox. Risk of injury.
The spindle speed must be adjusted to suit the work piece
material and diameter.
Calculating the maximum spindle speed
The required spindle speed can be calculated when the speci-
fied maximum cutting speed for a certain material is known.
Maximum permissible spindle speed
Cutting speed x 1000
=
Working piece diameter x 3.14
Example:
A work piece with a diameter of 20 mm is to be turned at a
cutting speed of 50 rpm.
50 x 1000
20 x 3.14
= 796/min
By shifting the V-belt (Fig. 10), set to the next highest speed.
In this case, the speed is 1600 rpm. The correct speed is now
set via the controls, and here is important to note that the
controls cover a speed range of 25% to 100%, i.e. in our
example, 400 rpm to 1600 rpm.
1. Release the clamp screw from the drive gearbox and open
the flap.
2. Release V-belt tensioner 1 (Fig. 10).
3. Adjust the relevant speed by shifting the V-belt according
to Fig. 11.
4. Re-tighten V-belt tensioner. Note the appropriate tension
of the V-belt. Overtensioning increases the wear of the belt
and bearing and reduces the motor power.
5. Close the drive gearbox before commencing turning work.