2014-2015 Полный каталог инструмента Mitsubishi (Митсубиси) EN

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y OPERATIONAL GUIDANCE FOR THE MNS TYPE LONG DRILL (L/D 10, 12, 15, 20, 25, 30)

  FLAT FACE DRILLING aDrilling a blind hole                                      y 2. Initial cutting with the long type drill

y 1. Drilling a pilot hole

z	U se a drill with a larger (flatter) point angle than the super long type.    z	Penetrate the pilot hole at low revolution.  (Cutting speed

  Mitsubishi type MNS, MAE-MB or MAS-MB drill is recommended.                      20m-30m/min, feed rate 0.2mm-0.3mm/rev)
x	Ensure a high precision hole is drilled for the guide.                        x	Stop the long type drill 1mm-3mm short of the pilot hole bottom.
c	Drill depth : Approx 1D or deeper.

	 (Adjust the pilot hole depth according to the length of the super long type.)

y 3. Drill the deep hole                                                         y 4. Drill retraction

z	Start cutting at the recommended speed and feed with a non-peck               z	After drilling, lower the cutting revolution about 1mm-2mm short of the
  (continuous feed) cycle.
                                                                                   hole end.  (Cutting speed of around 20m-30m/min)
                                                                                 x	R etract the drill to the pilot hole depth starting point at a feed rate of

                                                                                   3000mm/min.
                                                                                 c	Finally, clear the hole at a cutting speed of 20m-30m/min and feed rate

                                                                                   of 0.2mm-0.3mm/rev.

INTERRUPTED DRILLING aDrilling and breaking through on irregular faces or angles

y 1. Spot facing                                                                 y 2. Drilling a pilot hole

    z	Machine a flat on the irregular face by using an end mill or slot drill       z	Use a drill with a larger (flatter) point angle than the super long type.     DRILLING
       capable of spot facing.  Make the spot face diameter the same size               Mitsubishi type MNS, MAE-MB or MAS-MB drill is recommended.
       as the required deep hole diameter.
                                                                                     x	Ensure a high precision hole is drilled for the guide.
y 3. Initial cutting with the long type drill                                        c	Drill depth : Approx 1D or deeper.
                                                                                     	 (Adjust the pilot hole depth according to the length of the super long type.)

                                                                                 y 4. Drill the deep hole

    z	Penetrate the pilot hole at a low revolution.  (Cutting speed                 z	Start cutting at the recommended speed and feed with a non-peck
       20m-30m/min, feed rate 0.2mm-0.3mm/rev)                                          (continuous feed) cycle.

    x	Stop the long type drill 1mm-3mm short of the pilot hole bottom.          y 6. Drill retraction

y 5. Breaking through

z	When breaking through, the cutting edge can be damaged.                       z	R etract the drill to the pilot hole depth starting point at a feed rate of
x	A feed rate of 0.05mm-0.1mm/rev is recommended.
                                                                                   3000mm/min.
                                                                                 x	Finally clear the hole at a cutting speed of 20m-30m/min and feed rate of

                                                                                   0.2mm-0.3mm/rev.

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