Countersinking using extremely uneven pitch countersinks

Every machining process has latent potential for boosting productivity. There is significant potential  for improvement even in seemingly secondary machining operations. This issue is demonstrated by the new generation of countersinks.
90° countersinking tools from MAPAL.
The newly developed countersink operates with significantly reduced axial forces. The cutting edges on the countersinks have an unequal spacing. With this spacing, the axial forces are reduced by more than 50% and the radial forces by 25% compared with conventional countersinks. Such optimised operating conditions create far less vibrations at the tool, allowing higher accuracies and better surface finishes to be achieved. The precision of the countersink leads to an immediately improved contact of bolted and riveted joints, eliminating settling of the joint under load after assembly. The reduced load on the machine also increases the life of the tools. Thanks to the smooth and stable running, the tools can also be operated with higher cutting values. The result is significant time savings.

  • HSS design, coated

    The three cutting edges on the countersinks from MAPAL made of HSS with highperformance coating have extremely unequal spacing. As a consequence the axial forces are reduced and significantly less vibration is generated on the tool. In this way higher accuracies and better surface finishes are achieved. The precision of the countersink leads to the directly improved contact of bolted and riveted joints.

  • Countersinking tools in coated solid carbide design from MAPAL

    Solid carbide design, coated

    In addition to the high-performance coated HSS designs of countersinks, MAPAL also offers selected diameters as a coated solid carbide version. Along with the advantages of the unequal spacing, the solid carbide design offers additional advantages during the machining of demanding workpiece materials such as titanium, high-alloy cast iron, Inconel or CFRP. Longer tool lives and higher cutting speeds are reliably achieved compared with the coated HSS design

  • Two custom drills with countersinking step from MAPAL

    Special drill designs with countersink step

    MAPAL offers the possibility of manufacturing a countersink step for almost all solid carbide drills as a special solution. In this way two machining operations, drilling and countersinking, can be realised using one tool and non-productive times reduced. The latest production technologies as well as flexible manufacturing at MAPAL make possible short delivery times for custom solutions worldwide.