2014-2015 Полный каталог инструмента Mitsubishi (Митсубиси) EN

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   RECOMMENDED CUTTING CONDITIONS

   Work Material     Cutting Speed (m/min) Recommended Tool Overhang (mm)

P  Carbon Steel      50 (30  80)  Micro-Mini Twin                                                          (Note 1)	Wet cutting is recommended.
    Alloy Steel      50 (30  80)          CT                                                               (Note 2)	Pay special attention to

M Stainless Steel                                                                                                       machining of small
                                                                                                                        diameters at high
K Cast Iron          50 (30  80)             L10+ 2(mm)  Holder                                                        revolutions as the feed rate
N Non-Ferrous Metal  80 (50 100)                                                                                       cannot keep up with the
                                                                                                                        speed.

y PRECAUTIONS WHEN USING THE MICRO-MINI TWIN                                                                fig.1

a	When using a holder for general purpose / small automatic lathe:                                         Internal Face of the Holder

aTo 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

sWhen using this type of holder, there is a possibility that damage to the shank and the 2nd cutting       fig.2                 3rd Clamping Screw            THREADING
   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

eWhen using Mitsubishi holders                                                                              fig.3
	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 N • m.

a	When using a square type holder:

aWhen installing the boring bar into the holder, tighten the clamp screws after ensuring the flats on
   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.
dDo not tighten the clamp screw without a bar in place, otherwise the bridge will be deformed.

                                                                                                                              Insert The Reference Plane
                                                                                                                                         of Square Type Holder

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