Composite Material Machining

Delamination and fraying occur when the axial cutting force pushes the composite layers apart rather than shearing them cleanly. To solve this, JIAYI SEIKO recommends using compression routers (up-down cutters) or diamond-cut pineapple routers. Compression tools feature alternating left and right-hand helixes that simultaneously push the top layer down and the bottom layer up toward the center of the material, clamping the fibers during the cut to deliver perfectly clean, delamination-free edges on both surfaces.

Carbon and glass fibers are extremely abrasive, behaving like sandpaper against a cutting edge, which causes rapid flank wear and heat buildup. Standard coatings like TiAlN fail almost instantly. JIAYI SEIKO provides advanced CVD Diamond-coated and PCD (Polycrystalline Diamond) tipped tools. CVD diamond coatings offer a hardness close to natural diamond, drastically reducing friction, dissipating heat, and extending tool life by up to 10 to 20 times compared to uncoated carbide.

Drilling composites risks severe exit-side delamination as the drill thrusts through the backing material. JIAYI SEIKO engineers specialized 8-facet drills or "dagger" (W-point) drill geometries specifically for aerospace composite applications. This unique geometry reduces thrust force at the point of exit by shearing the fibers from the center outward, ensuring a clean break and maintaining tight hole-diameter tolerances for rivets and fasteners.

Absolutely. Lightweight automotive components, wind turbine blades, and aerospace honeycomb materials frequently require proprietary trim lines and profile geometries. Our engineering team custom-designs composite step drills, profile routers, and slotting cutters paired with optimal PCD or CVD diamond specifications based on your specific fiber-to-resin ratio and machining setup. Submit your composite part drawing for a custom tooling blueprint.