Seco JC898 JC899 Hybrid Stack tooling was developed to maintain hole quality in stacked materialsClick image to enlargeThe JC899 Hybrid Stack finisher and JC898 rougher from Seco Tools are ideal solutions for holemaking and milling operations in hybrid stacked materials.

The finisher features a two-in-one geometry that eliminates problems with delamination and fiber pulling out when working with stacked materials such as carbon fibre reinforced polymer (CFRP) combined with titanium/aluminum.

Together with the JC898 rougher, the JC899 finisher offers three to six times more tool life over conventional drill/reamer combinations and generates pollution-free holes and side walls with perfect surface finishes to deliver up to 300 per cent greater process efficiency.

The rougher’s advanced frontal teeth design makes it ideal for helical interpolation, which reduces cutting forces and minimizes the risk of delamination when working with hybrid stacked materials that can put pressure on Z-axis drilling operations and generate chips that can damage the machined hole’s surface finish. The new tools achieve faster, cleaner holes and side wall finishes without the extra time-consuming step of removing chips that lodge in between the stacked material layers.

In addition, the JC898 and JC899 offer numerous advantages for helical interpolation and side milling applications, increasing process stability and speed at the same time they minimize the need for post-machining operations and benchwork.

The JC898 and JC899 handle lengths or stack heights ranging from 15 to 60 mm. The JC898 is available in diameters of 8 or 15 mm, while the JC899 is available in 8.5 and 14.8 mm (finisher) as well as in a 0.375 in. diameter.

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