Automotive manufacturers are increasingly adopting aluminium parts

By OEM Update Editorial January 9, 2019 4:36 pm IST

A report on Sandvik Coromant’s two new drills optimised for drilling aluminium automotive parts.

Two new drills optimised for drilling aluminium automotive parts have been developed by cutting tool and tooling systems specialist Sandvik Coromant. Ideal for the machining of components in medium-to-large volumes, CoroDrill 400 and CoroDrill 430 deliver higher throughput and lower costs, as well extended tool life and enhanced process security. The drills are supported by CoroTap 100, 200, 300 and 400, which are also optimised for tapping operations in ISO N materials and help provide a complete hole-making offer from a single source for those tasked with producing aluminium automotive components.

“Automotive manufacturers are increasingly adopting aluminium parts to help reduce vehicle weight and improve fuel efficiency,” says Aaron Howcroft, Global Product Manager at SandvikCoromant. “These latest drills with grades optimised for ISO N materials offer a host of benefits, including high reliability, enhanced precision, low cost-per-hole, longer and more consistent tool life, high repeatability and improved process security.”

While both CoroDrill 400 and CoroDrill 430 are available in the SandvikCoromant N1BU solid-carbide grade, the former can also be specified in the new N1DU veined polycrystalline diamond (PCD) grade. N1DU provides PCD across the entire cutting edge, thus offering much longer tool life. Due to PCD’s low coefficient of friction and high conductivity of heat, the tool’s cutting edges are less susceptible to built-up edge (BUE). As a general guide, SandvikCoromant recommends the use of the solid-carbide grade when the hole count is low and handling risk is high, while the PCD grade is preferable where hole count is high and higher productivity is required.

CoroDrill 400 is recommended for drilling into solid material, as it features more flute volume for better chip evacuation. When drilling into cored material or pre-cast holes, CoroDrill 430 will perform better as it features three flutes for increased stability and holding true positon regardless of misaligned cored holes.

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