Micro drills for precision machining
- November 16, 2021
Sandvik Coromant has launched two new microdrill families for precision machining.
The CoroDrill 462 with -XM geometry and the CoroDrill 862 with -GM geometry have been designed for industries with a high demand for precision small part manufacturing, including medical, automotive, electronics and aerospace, and cover a variety of workpiece materials.
Replacing Sandvik Coromant’s existing R840 and current 862 micro drill assortments, the CoroDrill 462 and 862 are available in new geometries to offer a wide variety of cutting diameters and lengths, offering an increased product range compared to previous assortments.
The drills have been adapted to overcome the challenges of micro drilling. For instance, much like macroscale applications, it’s critical to have quality coolant to effectively evacuate chips when performing deep-hole drilling with micro tools. Both the 462 and 862 can drill hole depths of up to nine times diameter (xD) when using external coolant, and a through-coolant option is also available for drilling diameters of 1.00 mm and above, and hole depths of up to 16xD. The use of coolant helps the tools to drill deeper holes and extends tool life and reduces the risk of chip jamming.
The CoroDrill 462 offers high performance hole making up to 3.00 mm, machining a variety of ISO materials, including ISO P, M, K, N, S, O and H with a drill depth of 6xD. The 862 is ideal for making 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 862 supports a variety of other drilling activities, including cross holes, stack drilling and drilling of convex and concave surfaces.
The 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.
Read more on the Sandvik Coromant website.