EMUGE FRANKEN - Trochoidal Milling

Wednesday, January 02, 2019

Trochoidal Milling

Trochoidal milling is the overlapping of a circular path with a linear movement and thus the conversation of slot milling into contour milling. Just as in finishing operations the chip is peeled from the workpiece with a low radial depth of cut and a maximum axial depth of cut (2 x d1 to 5 x d1). The small contact angle reduces heat generation during machining and less thermal stress results in a higher tool life.

The high metal removal rates can be generated even on low-powered machines and wear during full slot-milling particularly in difficult to machine materials is reduced. The end mill is used with the entire flute length and as a result the wear is evenly spaced out over the full cutting edge length, increasing tool life.

The Tools

In order the meet the requirements of trochoidal machining FRANKEN solid carbide end mills 'Trochoid' feature low vibration characteristics such as variable spacing and variable helix angle or a new edge geometry.

The newly developed chip divider reduces the axial pull-out force of the tool and minimises the risk of jam in pockets. The short chips can easily be removed with compressed air or emulsion, avoiding a repeated pull-through of chips.

New high-performance coatings and an optimally suited carbide substrate round off the performance of these new types of tool.

The Benefits

  • Cutting geometry Jet-Cut steel and TiNox-Cut for INOX
  • 4 length dimensions available per type (2 x d1 to 4 x d1)
  • Chip breaker geometry designed for process-reliable roughing of pockets and contours
  • TiNox-Cut design with internal coolant supply (ICA) 
  • Special preparation of cutting edges to reduce vibrations
  • Low-vibration machining thanks to variable spacing and variable helix angle
  • New high-performance coatings
  • Optimally suited carbide substrate.

View full brochure HERE.



"A demonstration of trochoidal milling in P20 tool steel material. The video shows a series of 2533L extra length (3xD) Trochoid Carbide End Mill being used as a roughing and super finishing tool in the same application. The chip  breaking flute design allows the end mill to operate at full depth with minimal radial depth of cut. Chips are broken into smaller segments that are quickly evacuated."

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