Small-Diameter End Mill Reduces Cutting Resistance, Chattering

The MFH Mini from Kyocera Precision Tools is a small-diameter, high-feed end mill for rough processing, comprising an insert and dedicated holder. The insert enables smooth cutting with low resistance by applying an edge design developed to cushion initial shock at the moment of workpiece contact, thus achieving smooth cutting with low resistance. As a result, the product reduces chattering and enables increased feed rates. In addition, the MFH Mini provides high chip evacuation with its GM chipbreaker design. This end mill is available with both a CVD- and PVD-coated insert.

The end mill’s LOGU insert and GM chipbreaker are ideal for face milling, shouldering, contouring, slotting, pocketing, ramping and helical milling required for mold processing and other applications. The insert material exhibits increased wear and fracture resistance when the company’s CVD/PVD coating is applied to the insert’s cemented-carbide base material. This enables the processing of materials ranging from general and mold steels to traditionally difficult-to-cut materials such as nickel-based, heat-resistant alloys.

The insert avoids chip evacuation problems that typically occur when slotting and pocketing, and improves stability, contributing to high-efficiency processing. The insert also reduces cutting resistance and chattering, enabling high-efficiency, high-feed processing on small machines with increased feed rates. The company says that the double-sided, four-edge negative insert provides economic efficiency.