EDGE2 Spherical Ballnose Tools

March 07, 2016

Truly indexable finishing inserts have arrived with the new EDGE² spherical ballnose (SBN) system from DAPRA Corp.

SBN inserts feature two usable cutting edges, delivering cost savings and high-quality finishes. Thicker carbide construction enhances heat and stress absorption, and outstanding insert life allows for the long unattended finishing runs—with superior surface finishes reportedly created by an improved grinding process. The SBN series is also excellent for tip-cutting, 3D profiling, semifinishing and light roughing.

Fully through-hardened SBN cutter bodies provide optimal strength and longevity. High accuracy and centrality ensure minimal runout to provide the best finishes and tool life, and a close-tolerance insert pocket produced by EDM removes less body material for improved insert support. Solid carbide and carbide core cutter bodies are available, as are screw-on modular heads and modular extensions.

Related Glossary Terms

  • electrical-discharge machining ( EDM)

    electrical-discharge machining ( EDM)

    Process that vaporizes conductive materials by controlled application of pulsed electrical current that flows between a workpiece and electrode (tool) in a dielectric fluid. Permits machining shapes to tight accuracies without the internal stresses conventional machining often generates. Useful in diemaking.

  • grinding


    Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.

  • profiling


    Machining vertical edges of workpieces having irregular contours; normally performed with an endmill in a vertical spindle on a milling machine or with a profiler, following a pattern. See mill, milling machine.


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