DOUBLE-SIDED CUTTING INSERTS WITH POSITIVE CLEARANCE FACE GEOMETRY

摘要

A double-sided cutting insert that has a positive clearance face and includes a top portion, a bottom portion substantially identical to the top portion, and a middle portion. The inscribed diameter at the middle portion is larger than the inscribed diameter at each of the top portion and the bottom portion. The double-sided cutting insert having positive clearance face provides a simplified grinding method in order to achieve the dimensional precision required as well as reduced tooling cost allowing both positive and negative double-sided cutting inserts seat in the same insert-receiving pocket on the same tool holder.

主权项

1. A double-sided cutting insert having positive clearance faces comprising a top portion, a substantially identical bottom portion and a middle portion between the top portion and bottom portion; the top portion having an inscribed diameter, the bottom portion having an inscribed diameter, and the middle portion having an inscribed diameter; and the inscribed diameter of the top portion being less than the inscribed diameter of the middle portion, the inscribed diameter of the bottom portion being less than the inscribed diameter of the middle portion, and the inscribed diameter of the top portion being approximately equal to the inscribed diameter of the bottom portion.