Proxxon UT 400 Bedienungsanleitung Seite 5

PROXXON DIVIDING HEAD UT 400
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1 In general
As already implied by the name, dividing heads are suitable
for manufacturing divisions on work pieces: typical exam-
ples are gear teeth or bolt circles. These can be regular or
irregular: The main thing is that the spacing is as set on the
dividing head or a multiple of it.
To carry out the required task, the work piece clamped in a
lathe chuck or face plate is simply turned further by the set
amount after each machining operation.
The PROXXON UT 400 is equipped with a worm gear as
standard and is mainly used for the manufacture of gear
wheels, gear parts, ratchets, cams, etc.
Virtually all divisions of less than 100 can be executed. De-
livery includes the mounting parts and 4 index plates with:
27/42, 33/40, 34/39 and 36/38 bolt circle divisions.
Although the device was primarily developed for the lathe
system PD 400 (in combination with the vertical miller PD
230) and the PROXXON milling machine system FF 500/BL,
horizontal and vertical mounting is possible on practically
any suitable T-slot table.
If the enclosed slot nuts do not fi t (they are coordinated to
the PD 400 and FF 500/BL system with the corresponding
compound tables), the user must procure other slot nuts
with matching tapped holes.
2 Scope of delivery (Fig. 1)
Pos. 1 Dividing head
Pos. 2 Mounting parts
Pos. 3 Index plates
3 Fastening and assembly
Working with the PD 400 and the PF 230 milling cutter
The dividing head UT 400 can be mounted directly on the
cross slide of the lathe PD 400.
The top slide with the tool post must fi rst be removed.
Unscrew the two Allen screws as shown in Fig. 2 and re-
move the top slide and the square nut in the groove:
removing the top slide reveals the grooves and tapped
holes by means of which the dividing head can be mounted,
see Pos. 1 and 2 in Fig. 3.
A slot nut with loosely screwed in M6 x 40 screw (included)
is now inserted into the required groove of the support ta-
ble, see Fig. 4. The second M6 x 40 screw is then screwed
several threads into one of the tapped holes Pos. 2 (Fig.
3) and the dividing head is fi tted as shown in Fig. 5. Fig. 6
shows the completed vertically assembled dividing head.
Fig. 7 shows the horizontally assembled dividing head. This
is fastened with two M6 x 25 screws (included) and both slot
nuts (also included) in the required groove, Pos. 1 (Fig. 3).
Working with the FF 500/BL
Please note: The dividing head can, of course, also be
mounted by the same method on the compound table FF
500/BL. With horizontal assembly, however, please note
that 4 Allen screws M6 x 40 (included) must be used in this
case. The hole spacing in the base body of the dividing head
and the slot clearances are the same in one plane.
Fig. 8 and 9 show the dividing head in horizontal and verti-
cal position.
Lastly, the suitable clamping device can be screwed on.
Please use only PROXXON original lathe chuck or PROXXON
face plate:
The clamping device holder of the dividing head is coordi-
nated to the accessories of the PROXXON accessories pro-
gramme. For example, it is possible to use all lathe chucks
that we also offer for our lathes (see table below), but also,
e.g., our face plate. The chucks available:
Article number: Designation:
24407 3-jaw chuck, centrically clamped
24408 4-jaw lathe chuck, centrically clamped
24410 4-jaw lathe chuck with individually
adjustable jaws
You will fi nd more information on our entire comprehensive
accessories programme for your UT 400 in our device cata-
logue or at www.proxxon.com.
4 Working with the dividing head
The fl ange is provided with a centring collar with a 70 mm fi t.
This is suitable for fastening the various PROXXON 3- or
4-jaw chucks and the face plates (all from the lathe system
PD 400).
The edge of the fl ange has graduation marks (see 1, Fig.
10): long mark = 10 degrees, short mark = 5 degrees.
ATTENTION!
WHEN TURNING THE FLANGE; ALWAYS ENSURE THAT
BOTH HEXAGON SCREWS (see Fig. 10) ARE LOOSENED.
WHILE MACHINING THE WORK PIECE (ESPECIALLY
WHEN MILLING), THE FLANGE MUST BE CLAMPED BY
TIGHTENING THE HEXAGON SCREWS POS. 2.
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