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Emerald Group Publishing Limited
Copyright © 2009, Emerald Group Publishing Limited
Two geometries in one for the perfect rough and finish turning insert
Article Type: Equipment and software From: Aircraft Engineering and Aerospace Technology: An International Journal, Volume 81, Issue 6
By combining two different geometries on the same insert, tooling giant Walter has created the NRF indexable insert for simultaneous heavy-duty rough and finish turning applications in the same set-up. The insert can be applied on both low- and high-alloy steels and with the same tool, effectively halving the number of geometries users may need.
In addition, because NRF features a strengthened double groove at the main cutting edge, the doubled chip compression generates short chips and the v-shape chip forming area at the cutting radius leads to optimum chip breaking at low depth of cut.
Available in five basic shapes – CNMM, DNMM, SNMM, TNMM and WNMM – and in a variety of Tiger.tec coatings (visit for full options and specifications), NRF inserts can accommodate machining at low (0.8 mm) and deep (15 mm) cut depths, and cutting forces can be reduced because the curved cutting edge generates a soft flow of swarf (Figure 1).
For further details, please contact: Walter GB Limited. Tel.:+44 (0)1527 839450; Fax: +44 (0)1527 839499.