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You are here: Technology / Milling / Spindles / Selection of the spindles
   

 

 

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Selection of the spindles
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Selection of the spindles


     

Each task demands a careful selection of the spindle system. The smallest
spindles are of special interest since they determine mainly the essential
operation time.

As to be seen in the table below, the optimal number of revolutions for steal,
with a diameter of 2 mm, is 30.000 rotations per minute. It has to be taken into
account that the effective diameter of milling cutters for radius is normally much
smaller than the nominal diameter. Hence, an even higher speed is necessary
for good surface quality.

Even much higher number of revolutions are optimal when working with materials
such as copper or graphite. The more solid spindles, like the 1201, are surely
strong enough to use also milling cutters with a diameter of 30 mm to handle
steal for tools.




 

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Determined by the system this
can taking a little time.

 

 
 
  Type of Spindle 71 301 751 901 1001 1201 2001
  Power: [kW] 0,7 3,0 7,5 9 10,0 12,0 20,0
  Number of revolution:
  min.
[r/min] 5000 5000 1000 1000 1000 1000 500
  Number of revolution:
  max.
[r/min] 60 000 40 000 24 000 60 000 24 000 30 000 18 000
  Tension cone ISO
10
HSK
A 25
HSK
A 40
HSK
F 40
HSK
A 40
HSK
F 40
HSK
F 40
  Max. tension
  diameter Ø
[mm] 6 10 16 20 16 20 32
  Change-over sensor nein ja ja ja ja ja ja
   Further spindles with number of revolutions of up to 160.000 r/min on demand.
 
   

 

Smallest milling actions with milling cutters of less than 0,5 mm diameter demand
an optimal number of revolutions of 60.000 r/min. Wissner even offers systems
with a number of revolution of 160.000 that still allow an economical production
of micro-small tools.
The spindles mainly need hollow frame cones as an intersection. These hollow
frame cones are characterized by an enormous stiffness and they are superior to
frame cones of the same diameter. This superiority is also to be seen at the inner
claw that becomes especially stable at a higher number of revolution. As a result
the whole tension system is even stiffer. All cones of normal size used by Wissner
are in stock so that we can help quickly with the supply . Wissner has also
several tool holding fixture systems on site at our presentation centre as to give
you detailed advise on the appropriate tension system.

 

 

 

 

 

 

 

 
     






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