Cutting tool and tooling system specialist Sandvik Coromant has released a new, high-feed version of the CoroMill 745 face milling cutter, featuring a 25° entering angle for milling steel and cast-iron workpieces. The new, high-feed version facilitates high metal removal rates (MRR) in applications with depths of cut up to 2.8 mm (0.110 inch). The new cutter is designed for use in sectors such as die and mold, pump and valve, oil and gas, automotive, power generation and general engineering.
The company asserts that despite the elevated MRR, there is no compromise to surface finish when using the CoroMill 745. A light cutting action from the insert positioning is designed to provide a smooth, soft sound and low power consumption.
“An important benefit of the new cutter is low cost per edge from its double-sided, 14-edge insert design,” said Matts Westin, product manager, Sandvik Coromant. The company has used the same inserts for this tool with a 25° entering angle as its counterpart cutter with a 42° entering angle.
The tool is aimed at roughing to semi-finishing face milling operations on machining centers and multi-task machines. With its multi-edge concept, the tool is suitable for large batch production and flexible transfer lines.
The CoroMill 745 is suitable for milling components made from ISO P or ISO K materials, such as valves, engine blocks, hubs, main frames, pump components and molds. A short (0.6 mm, 0.024 inch) parallel land is intended to ensure a good surface finish.
The large screw is designed for easy handling, while the insert position and the heptagonal insert shape make clamping secure for face milling operations. Internal coolant is available for all cutters that range from 63 to 160 mm (2.5 to 6.0 inch).
Face milling in cast iron.
A customer trial included face milling a machine bed component made from cast CMC ST52 (165 HB) on an ISO 50 gantry mill. A 125 mm (5 inch) CoroMill 745 with a 25° entering angle reduced cycle time per component by 40 percent in comparison with a competitor tool, according to the company.
For more information, visit the Sandvik Coromant website.