Flat-bottom geometry for series of modular drills
Posted on 18 Sep 2020 and read 767 times
Kingswinford-based Kennametal UK Ltd (www.kennametal.com
) has expanded the replaceable drill offering for its KenTIP FS modular drill series with the new FEG insert for flat bottom hole applications in steel, cast iron and stainless steels.
This insert eliminates end-milling operations and completes a task in a single step, saving time and tooling costs.
Drilling flat-bottom holes can be challenging, as can drilling on inclined or curved surfaces, drilling into cross holes, drilling stacked plates and drilling into castings and other rough surfaces.
However, Kennametal says its KenTIP FS modular drill with FEG insert geometry not only streamlines many of these types of applications but also simplifies the drilling of counterbores and pilot holes.
The FEG geometry features a 180deg cutting edge and a conical centre point that acts as a pilot to provide ‘exceptional hole position and straightness’, while corner chamfers serve to protect the cutting edges and reduce exit burrs and four margin lands provide stability when breaking into interrupted cuts and cross-holes.
Furthermore, Kennametal’s KCP15A grade uses a nano-structured AlTiN coating and fine grain carbide substrate to provide both toughness and wear resistance when drilling steel, stainless steel and cast iron.
The diameter range covers 6-26mm, with drilling depths up to 12xD, depending on the KenTIP FS modular drill body used.