Gear Hob Features Indexable Carbide Inserts

The CoroMill 177 tangentially mounted hob from Sandvik Coromant is said to increase productivity and tool life in gear wheel machining operations. Designed as an alternative to HSS hobs and disc cutters for module range 10-18, the hob features indexable carbide inserts with four cutting edges for roughing, semi-finishing and finishing operations. The tool is well-suited for workpieces such as spur gears and helical gears found in gearboxes, and transmissions for wind power and other heavy-industry applications.

The hob’s segment fixturing interface ensures cutter accuracy and rigidity for greater stability during machining. According to the company, the tool enables aggressive cutting without decreased security or reliability. Secure, stable insert seats offer reliable performance and avoid sudden failures, the company says. Insert screws are positioned for easy accessibility, and there are no inclined screw holes. Tools can be designed to accommodate finishing inserts for DIN 3972-2 profiles or roughing inserts with protrusion.