OPTIMUM
MASCHINEN - GERMANY
Operation
Version 1.1.5 dated 2015-08-31 Page 29Original operating instructions
BF30Vario GB
4.5 Inserting a tool
4.5.1 Installation
CAUTION!
When milling operations are performed the cone seat must always be fixed to the draw-
in rod. All cone connections with the taper bore of the work spindle without using the
draw-in rod is not allowed for milling operations. The cone connection should be
released by the lateral pressure. Injuries may be caused by parts flying off.
The milling head is equipped with a draw-in rod M12.
Remove the cap.
Clean the seat in the spindle / quill.
Clean the taper of your tool.
Insert the tool in the spindle / quill.
Img.4-2: Drilling and milling head
Screw the draw-in bar in the tool.
Tighten the tool with the draw-in rod
and hold the spindle on the counter
bearing by means of a wrench.
Img.4-3: Drilling-milling head without cap
4.5.2 Unfitting
Hold the spindle counter bearing with a wrench and loosen the draw-in rod. Continue turn-
ing the draw -in rod, so that the tool is squeezed out from the conical collet.
ATTENTION!
When using an MT spindle.
When installing a cold morse taper into a heated-up machine those MT seats tend to
shrink on the morse taper contrary to the quick-releaser tapers.
4.5.3 Use of collet chucks
When using collet chucks for the reception of milling tools, a higher operation tolerance can be
achieved. The exchange of the collet chucks for a smaller or larger end mill cutter is performed
simply and rapidly and it is not necessary to disassemble the complete tool. The collet chuck is
pressed into the ring of the swivel nut and must rest there by itself. The milling cutter is clamped
by fastening the swivel nut on the tool.
Make sure that the correct collet chuck is used for each milling cutter diameter, so that the mill-
ing cutter may be fastened securely and firmly.
"Optionally available accessories“ on page 25
Draw-in rod
Steady/
counter bearing
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