Sandvik Coromant has launched two micro-drill families for precision machining. CoroDrill 462 with -XM geometry and CoroDrill 862 with -GM geometry support industries that demand small parts, such as medical, automotive, electronics and aerospace. Designed to cover a variety of workpiece materials, CoroDrill 462 and 862 are available in new geometries to offer a wide range of cutting diameters and lengths.

The drills have been specially adapted to overcome the challenges of micro drilling. For instance, it is critical to have quality coolant to effectively evacuate chips when performing deep-hole drilling with micro tools. Both CoroDrill 462 and 862 can easily drill hole depths of up to 9xD when using external coolant. A through-coolant option is also available for drilling diameters of 1 mm and above, and hole depths of up to 16xD. Not only does the effective use of coolant help the tools to drill deeper holes, but it also extends tool life and reduces the risk of chip jamming.

Suitable for drilling both blind and through holes, the drill is capable of machining a variety of materials, including ISO P, M, K, N, S, O and H. Drill depths up to 6xD are available.

CoroDrill 862 is for making holes from 1 to 3 mm in diameter in all materials when used with internal coolant. In addition to conventional drilling, CoroDrill 862 supports a variety of other drilling activities, including cross holes, stack drilling and drilling convex and concave surfaces.

Although available as off-the-shelf solid carbide tools, both the CoroDrill 462 and 862 are available for customisation. Furthermore, customers have the option of purchasing CoroDrill 862 with a PCD vein cutting edge.

For further information
www.sandvik.coromant.com