Multi-flute reamer and cutting insert therefor
Номер патента: US20120121352A1. Автор: Armin Josef Zimmermann, Bernhard Eckl, LI NING, Michael Schuffenhauer, Thilo Klaus Juergen Mueller, Xaver Spichtinger. Владелец: Kennametal Inc. Дата публикации: 17-05-2012.A multi-flute reamer includes a cutting portion having a forward end and a rearward end, and a chip flute with a chip gash opening, and a cutting insert mounted on the cutting portion. A leading edge is formed at an intersection between a top surface and a radially-outward side surface, and a front edge is formed at an intersection between the top surface and a forward side surface. The cutting insert includes a rounded lead cutting edge formed at the intersection between the leading edge and the front edge, and the top surface includes a chip breaker having a bottom surface formed with a radius, R.