OPTIMUM
M A S C H I N E N - G E R M A N Y
201
2
Operation
Version 1.0.1 dated 30 / 08 / 2012
Page 27
Original operating instructions
MH28V
GB
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 draw-in rod M10.
Remove the cover.
Clean the seat in the milling spin-
dle / spindle sleeve.
Clean the taper of your tool.
Insert the tool into the holding fix-
ture / spindle sleeve.
Fig.4-4:
Drill-mill 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:
Drill-mill head
4.5.2 Disassembly
Hold the spindle thrust bearing with a wrench and loosen the draw-in rod. Turn the draw-
in rod further, so that the tool is squeezed out from the cone admission.
ATTENTION!
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 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 fastening 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.
“If the machine is cold such as e.g. directly after having transported the machine it
should be warmed up at a spindle speed of only 500 1/min for the first 30 minutes.“ on page
23
Cover
Draw-in rod
End support /
thrust bearing
