Manual Spindle Sleeve Feed With The Spindle Sleeve Lever; Swivelling The Drill-Mill Head; Selecting The Speed - Optimum OPTImill BF 46TC Betriebsanleitung

4.18

Manual spindle sleeve feed with the spindle sleeve lever

ATTENTION!
The clutch of the fine feed has to be disengaged before the spindle sleeve lever can be
used. Activating the spindle sleeve lever when the fine feed is engaged may damage the
clutch.

Loosen the handle screw. The sleeve lever moves away from the drilling head and deacti-
vates the coupler of the fine feed.
4.19

Swivelling the drill-mill head

The drill-mill head may be swivelled 45°
to the right and to the left. There are to
loosen three screws.
CAUTION!
If the screws are completely unfastened, the drilling-milling head might fall down. When
slewing the working head, only unfasten the screws as far as necessary to be able to
perform the settings. After having set the slewing angle, retighten the fixing screws.
ATTENTION!
The drill-mill head can be rotated much further. When slewing it further on gear oil might
escape.
4.20

Selecting the speed

The correct speed is an important factor for milling. The speed determines the cutting speed by
which the cutting edges cut the material. By selecting the correct cutting speed, the service life
of the tool is increased and the working result is optimized.
The optimum cutting speed mainly depends on the material and on the material of the tool. With
tools (milling cutters) made of hard metal or ceramic insert it is possible to work with higher
speeds than with tools made of high-alloy high speed steel (HSS). You will achieve the correct
cutting speed by selecting the correct speed.
In order to determine the correct cutting speed for your tool and for the material to be cut you
may refer to the following standard values or a table reference book (e.g. Tabellenbuch Metall,
Europa Lehrmittel, ISBN 3808517220).
The required speed is calculated as follows:
V
----------- -
n =
 
d
-1
n = speed in min (revolutions per minute)
V = cutting speed in m/min (meter per minute)
d = tool diameter in m (Meter)
Version 1.1.3 dated 2014-4-8
Clamping screws
Img.4-15: Clamping screws
Original operating instructions
OPTIMUM
M A S C H I N E N - G E R M A N Y
BF46V | BF46TC GB
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