2014-2015 Полный каталог инструмента Mitsubishi (Митсубиси) EN
для заказа - info@mitsubishitools.ru
BORING BARS
MICRO-MINI TWIN
yPRECAUTIONS WHEN USING THE MICRO-MINI TWIN Fig.1
a When using a holder for general purpose / small automatic lathe: Internal face of the holder
a To avoid chipping of the 2nd cutting edge take care when inserting the boring bar into the holder.
Refer to fig.1. If the 2nd edge contacts the internal face of the holder there is a possibility that it
may chip.
Insert direction Cutting edge
BORING s When using this type of holder, there is a possibility that damage to the shank and the 2nd cutting Fig.2 3rd clamping screw
edge can occur. Make sure that the clamping screws are tightened to the set torque value. 123
Additionally make sure that there is no clamping screw near the 2nd cutting edge as this can Insert point
break the boring bar. 2nd cutting edge
e When using Mitsubishi holders
When using holders with a tool overhang of recommended quantity, ensure that the 3rd clamping
screw is removed prior to machining. The set torque value for the clamping screw is 2.0 Nm.
a When using a square type holder: Fig.3
a When installing the boring bar into the holder, tighten the clamp screws after ensuring the flats on Insert The reference plane
of square type holder
the tool holder are parallel to the reference flats on the micro-mini bar. Refer to fig.3.
sMake sure that the clamping screws are tightened to the recommended values. Tighten the clamping screw ensuring the
dDo not tighten the clamp screw without a bar in place, otherwise the bridge will be deformed. micro-mini twin boring bar is in contact with the
reference plane of square type holder.
MACHINING METHODS OF THE CR TYPE y NOTES FOR USE
aProfile turning Machining a work piece Machining a work piece Profile turning,
without a pre-prepared hole with a pre-prepared hole Inner end facing
By drilling a pre-prepared hole, the
R5 The cutting edge
machining time will be shortened R5 should not cross
the centre line of the
and chip control will be improved.
work piece.
If the cutting edge crosses the centre line of a
Workpiece : DIN S20C work piece, the cutting edge can fracture.
Holder : CR05RS-01B Copying
Cutting Speed : 80m/min
Feed : 0.05mm/rev The depth of cut
Depth of Cut : 0.05mm Depth of Cut Depth of Cut should be smaller
Wet Cutting 3 3
than the nose
aInner end facing Machining a work piece Machining a work piece radius value.
without a pre-prepared hole with a pre-prepared hole
By drilling a pre-prepared hole, the Depth of Cut
machining time will be shortened With depths of cut larger than the
nose radius value, burrs will be formed.
and chip control will be improved.
Workpiece : DIN S20C 6
6
Holder : CR05RS-01B
Cutting Speed : 80m/min
Feed : 0.05mm/rev
Depth of Cut : 0.05mm
Wet Cutting Depth of Cut Depth of Cut
2
2
E022 info@mitsubishitools.ru www.mitsubishitools.ru