Inserts Can Accelerate Metal Removal

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Millstar has developed the Marathon ball insert for use when performing multi-axis machining of dies, molds and similar free-form 3D surfaces. The product incorporates a helical design, which is said to be useful for a variety of applications, and the company’s V-pocket clamping system.


The cutting edge allows the insert to perform all operations in materials that are less than 42 Rc. In semi-finishing, and finishing operations, the product can be used with materials that are more than 42 Rc.


Other applications for use are heat-treated intricate geometries and some roughing applications. The geometry allows for smooth cutting action, which can diminish heat build up and tool deflection, in turn reducing vibrations, the company says.