For parting-off at high feed rates, Horn has introduced EH geometry, a development based on the manufacturer’s S100 grooving system. The single-edge insert is available in widths of 3 and 4 mm. Notably, the stable cutting edge enables feed rates in the range of 0.25 to 0.4 mm/rev during grooving and parting, leading to fast cycle times.

High infeed requires a stable machine, as well as secure clamping of the workpiece. From a feed rate of 0.3 mm/rev, Horn recommends reducing the infeed for the first 3 to 4 mm during grooving and parting-off.

Due to their stability, S100 holders and cassettes for grooving along the Y axis are first choice when machining at these elevated feed rates. The process enables high-performance, vibration-free parting with high cutting values, leading to short machining times, reports Horn.

Especially when parting-off workpieces of larger diameter, high moments of force begin to manifest. The space available in a machine often does not allow the use of tools featuring larger cross-sections. With the new insert arrangement in the tool holder, the cutting forces are absorbed by the main cross-section of the parting tool holder, resulting in greater overall rigidity for a given tool width and, subsequently, higher feed rates. Alternatively, it is possible to deploy a narrower holder to achieve the same system rigidity.

For further information
www.phorn.co.uk