The same KOMET JEL thread mill cutting two different diameter holes-an M10×1.5 (left) and an M18×1.5. Most CNC machines built in the last 10 to 15 years have this capability. Two axes perform circular interpolation while the third moves perpendicular to the circular plane. Thread milling requires a machining center capable of helical interpolation, which requires three axes of simultaneous movement. “In reality, we can set up a customer to successfully thread mill fairly easily-as long as they have the right tooling.” Sales - USA, Troy, Mich., which offers solid-carbide and indexable-insert thread mills. “Thread milling is not a big mystery, but some shops are hesitant to do it,” said Joe Mazzenga, sales manager for J.M. While thread milling is a well-established process, some machine shops are still afraid to try it, fearing it is too complicated.
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