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Long-life endmills for CFRP components

News International-French

10 Mar 2014

JEC Europe 2014 - The new CoroMill Plura PCD end milling cutters are specifically designed for edging, surface milling, slotting and cutting operations on workpieces made from carbon fibre reinforced plastics (CFRP).  

CFRP components need to be trimmed to the right shape due to the way these innovative materials are manufactured.

These new milling cutters offer long tool life and predictable wear patterns, vital properties when machining composite parts in order to avoid downtime and rework/scrap. Based on a high-performance PCD grade optimized for CFRP, the endmills allow internal coolant and 5° ramping capability. Available in a diameter range of 6-16 mm, Sandvik Coromant has developed the PCD grade to produce the longest possible tool life. However, the end mills can also be reconditioned as and when required.

In terms of technical recommendations, for best results it is advisable to ensure the end of the cutter is 1 mm under the composite material, while conventional (up) milling gives less vibration and is preferable. The recommended maximum thickness of the material is 2 mm less than the length of the PCD section of the tool tip. Typical 2D surface machining applications permit a cutting speed in the region of 200-400 m/min, in combination with feed rates of 0.03-0.06 mm/rev. for roughing, or 0.02-0.04 mm/rev. for finishing.

The new cutters are a complement to the Sandvik Coromant drilling offer for CFRP. A complete package of solutions for CFRP components is available as many aerospace customers seek a full tooling solution.

More information:
Booth: Q42