Circle Segment Cutters

5-Axis Milling Tooling

EMUGE-FRANKEN was the first company to introduce Circle Segment end mills for 5-Axis milling. This family of tool designs constitute a new tool class that enable machining with a larger tool path distance during pre-finishing and finishing operations. These tools are primarily used in mold-making as well as in the production of tire molds, turbine blades, impeller blades or blisks.

The technical specialty of these end mills are the large radii in the cutting area of the respective tool which offer entirely new possibilities in machining. The large radius simulates a ball-nose end mill with a cutting diameter of 12 to 3,000 mm and even larger on request.

The CAM system which has to support and compute the geometry of the circle segment end mill, plays an important role here. Emuge offers programming assistance to end users who use most popular CAM software such as hyperMILL®,, Mastercam® and others. With circle segment cutters, machining times can be reduced significantly and at the same time the surface quality of the components is increased.

There are four different types of circle segment end mills available:

  • Barrel-shape
  • Oval form
  • Taper form
  • Lens-shape

To help further understand the benefits of circle segment cutters please read the June 2018 article in Modern Machine Shop

Visit the Circle Segment Microsite to create examples that compare your current ball nose milling cutter paths and time cycles to a circle segment tool:

Visit Microsite

Circle Segment Cutters Products