Two Microdrill Families Optimized for Precision Machining

Sandvik Coromant has launched two micro-drill families specifically designed for precision machining. The Corodrill 462 with -XM geometry and the Corodrill 862 with -GM geometry are designed for small part manufacturing, including medical, automotive, electronics and aerospace. These drills are designed for a variety of workpiece materials and applications that demand high-accuracy.

Micro-drilling typically refers to holes smaller than 3 mm in diameter, according to the company. The Corodrill 462 and 862 are available in new geometries to offer a variety of cutting diameters and lengths.

Sandvik Coromant has designed the drills to overcome the challenges of micro-drilling. The Corodrill 462 and 862 can drill hole depths of up to nine times diameter (xD) when using external coolant, and a through-coolant option is available for drilling diameters of 1.00 mm and above, and hole depths of up to 16xD.

The Corodrill 462 offers hole making up to 3.00 mm with a drill depth of 6xD. Suitable for drilling both blind and through holes, the drill is capable of machining a variety of ISO materials, including ISO P, M, K, N, S, O and H.

The Corodrill 862 makes holes from 1.00 mm to 3.00 mm in diameter in all materials when used with internal coolant. In addition to conventional drilling, the Corodrill 862 supports other drilling activities, including cross holes, stack drilling and drilling of convex and concave surfaces. It offers the option for a polycrystalline diamond (PCD) vein cutting edge, which the company says is especially useful for difficult-to-machine materials.

Both micro-drills are available as off-the-shelf or customizable solid carbide tools. Tools can be configured based on diameter, usable length, step-diameter length and shank diameter for manufacturers who require a bespoke approach to micro drilling.