EWS.Multiform - polygonal drilling

Create any desired shape centrically or eccentrically

4-, 6- or 8-edge, polygon or free-form shapes with EWS.Multiform on CNC turning/milling centers

Create any desired shape centrically or eccentrically

Free forms that used to be impossible can now be made with EWS Multiform on turning/milling or machining centres. For a six-edge outside the centre or a four-edge in the centre, additional processing steps such as reaming or eroding were necessary up until now. If a position change was also needed, complicated devices were needed for processing. This is now all possible with one chuck.

What is behind this?

EWS Multiform uses a custom internal cam disc unit to produce the required form. For conventional geometry like squares or hexagons, there are standard cam discs available. The cam forces the cutting tool to follow a path in order to get the desired geometric shape. Of course you can’t defy the laws of physics which means that there will be a small radius on the edges.

The multiple new possibilities however will allow engineers to come up with new processes for manufacturing. ID and OD slots, offset squares and straight polygons are examples of an endless list of opportunities. To see what shapes are possible all that needs to be done is verify with EWS application engineering.


  • The profile to be machined is generated via appropriately designed cams. Standard and special designs are possible.
  • The drive is provided by the turret station for driven tools.
  • Caution: Restriction for turrets whose driven tools run permanently, since the speed is limited to 1000/min.

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