Decades ago, technology shifted from HSS to indexable inserts in turning and milling. This movement wasn't immediately realized in gear hobbing because coated PM-HSS hobs and complex gear profiles remained highly effective and productive methods. Only fairly recently have gear manufacturers started to take a serious look at indexable technology to cut gear teeth. A shift away from conventional gear machining to machining centers/five-axis machines is one of the major factors in this shift. Furthermore, advances in both productivity and quality in indexable gear tooling also play a central role in this development. Finally, new materials in gear production are making indexable tooling attractive to many gear manufacturers.
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