Sandvik Coromant has added two microdrill families designed for precision machining. The CoroDrill 462 with -XM geometry and the CoroDrill 862 with -GM geometry support industries requiring small part manufacturing, including medical, automotive, electronics and aerospace.
"Drilling specialists generally use the term micro drilling when describing holes smaller than 3 mm in diameter," said a company spokesperson. "This can refer to holes often encountered in the electronics industry, where workpieces are just a few hundredths of a millimeter thick, but more common applications include the aerospace industry, mold and die making and medical equipment manufacturing."
CoroDrill 462 and 862 drills have been specially adapted to overcome the challenges of micro drilling. For instance, much like macroscale applications, it is critical to have quality coolant to effectively evacuate chips when performing deep-hole drilling with micro tools. The CoroDrill 462 and 862 can drill hole depths of up to 9xD when using external coolant, and a through-coolant option is available for drilling diameters of 1 mm and above and hole depths of up to 16xD. The effective use of coolant helps the tools to drill deeper holes, extends tool life and reduces the risk of chip jamming.
CoroDrill 462 offers high performance holemaking up to 3 mm. Suited for drilling 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. It provides a drill depth of 6xD.
CoroDrill 862 is designed for making holes from 1 mm to 3 mm in diameter in all materials, when used with internal coolant. In addition to conventional drilling, the CoroDrill 862 supports a variety of other drilling activities, including cross holes, stack drilling and drilling of convex and concave surfaces.
CoroDrill 462 and 862 are available as both off-the-shelf and customizable solid carbide tools. As part of the range, Sandvik Coromant has made it possible to configure the tools based on diameters, usable length, step-diameter length and shank diameter, for manufacturers who require a bespoke approach to micro drilling.
Customers also have the option of purchasing the CoroDrill 862 with a polycrystalline diamond (PCD) vein cutting edge. "PCD is up to 100x more wear-resistant than solid carbide, and PCD tooling is more accurate and can produce tighter tolerances than solid carbide tools," said the spokesperson. "Customers seeking to drill micro-sized holes in notoriously difficult-to-machine materials, such as titanium, aluminum, glass and ceramics, should consider PCD."
CoroDrill 462 and CoroDrill 862 replace Sandvik Coromant's R840 and 862 micro drill assortments.
For more information contact:
Sandvik Coromant
295 Maple Lane
Mebane, NC 27302
800-SANDVIK
coromant.us@sandvik.com
www.sandvik.coromant.com