New end mills for composites

Cutting tool supplier Sandvik Coromant’s (Sandviken, Sweden and Fair Lawn, N.J.) Smart Hub stand at JEC Europe 2014 emphasized the company’s ability to meet the needs of composite fabricators who are responsible for trimming, routing and drilling composite structures and/or stacks of composites and metals.

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Cutting tool supplier Sandvik Coromant’s (Sandviken, Sweden and Fair Lawn, N.J.) Smart Hub stand at JEC Europe 2014 emphasized the company’s ability to meet the needs of composite fabricators who are responsible for trimming, routing and drilling composite structures and/or stacks of composites and metals. Among the products on display was CoroMill Plura, a brazed end mill available in diameters of 6 to 18 mm (0.24 to 0.71 inch), with internal cooling and 5° ramping capability. The end mills feature a high-performance polycrystalline diamond (PCD)-grade optimized for CFRP, developed by Sandvik to deliver maximum possible tool life and offer the potential for end mill reconditioning. For a typical 2-D surface machining application, the end mill design permits cutting speeds that can range from 200 to 400 m/min (656 to 1,312 ft/min), with 0.03- to 0.06-mm/rev (0.001-inch to 0.002-inch/rev) feed rates for rough cutting, and an 0.02- to 0.04-mm/rev (0.0007-inch to 0.0015-inch) rate for finishing operations.