OPTIMUM
M A S C H I N E N - G E R M A N Y
Version 3.1.8 dated 2015-1-27
Page 26
Original operating instructions
BF20V
US
4.5
Inserting a tool
4.5.1 Installation
CAUTION!
When milling operations are performed the cone seat has to be fixed always to the draw-
in rod. Any cone connections with the taper bore of the work spindle without using the
draw-in rod are not allowed for milling operations. The cone connection should be
released by the lateral pressure. Injuries may be caused by parts flying off.
The mill head is equipped with a 10mm draw-in rod.
Remove the cover.
Clean the seat in the milling spindle /
spindle quill.
Clean the taper of your tool.
Insert the tool into the holding fixture /
spindle quill.
Fig.4-4: Mill drill head
Screw the draw-in rod into the tool.
Tighten the tool with the draw-in rod
and hold the spindle onto the end
support with a key.
Fig.4-5: Mill drill head
4.5.2 Disassembly
Hold the spindle thrust bearing with a wrench and loosen the draw-in rod 2-3 turns. Tap top
of draw rod with hammer to loosen the tool from the cone. Turn the draw-in rod further, so
that the tool is released completely from the cone.
ATTENTION!
When installing a cold Morse taper into a heated-up machine those MT seats tend to
shrink on the Morse taper versus quick-release tapers.
4.5.3 Use of collet chucks
When using collet chucks to hold milling tools, a higher operation tolerance can be achieved.
The exchange of the collet chucks for a smaller or larger end mill cutter is done in a simple and
rapid way and it is not necessary to disassemble the complete tool. The collet chuck is pressed
into the ring of the swivel nut and has to rest there by itself. The milling cutter is clamped by fas-
tening the swivel nut on the tool.
Make sure that the correct collet chuck is used for each milling cutter diameter, so that the
milling cutter may be fastened securely and firmly.
"Optional accessories“ on page 22
Cover
Draw-in rod
End support /
thrust bearing
