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Milling

Milling closed pockets or angles

Milling closed pockets or angles

Closed angles, less than 90 degrees, are a common component feature in pockets and cavities. A machine with 4 or 5 axes is needed to machine a closed angle.


Milling of a blisk impellar is one
application example of milling closed angles.
 

Use a 4-axis machine:

  • If only one side of the pockets has a closed angle and the bottom shape is flat

Use a 5 axis machine:

  • If there is a corner with closed angles on both sides
  • If there is a radius at the bottom profile

How to mill closed pockets or angles

Machining recommendation

  1. Prior to radius machining, shoulder milling of the wall should be performed with a square end mill for best stability.
  2. The radius is machined with a ball nose end mill.​

Use a square end mill for
best stability when machining
the peripheral wall.

The final machining of the radius
should be performed with a conical
ball nose end mill.​
 
 
 
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