High speed fine boring tool
BRIGHETTI MECCANICA

The BROACHER is a high-speed tool for forming blind or through holes with regular polygonal shapes (square, hexagonal, etc.).
It consists of a tempered steel body with a conical or cylindrical shank for connecting it to a machine tool at one end, and a boring bar for applying various types of broaches at the other end.
The broacher may be applied on most rotary machine tools, both conventional (lathe, drill, milling machine) and numerically controlled ones. Thus it can work both vertically and horizontally.
The boring bar carrying the broach is set in the tool body at a specific inclination so that, when the machine rod starts it rotating, it transmits both, a rotary and oscillating motion to the broach. The combined action deriving from the rotation and feed function provided by the machine , allows the broach to smoothly penetrate the pre-drilled workpiece, in order to form the shape required.
The broacher is manufactured with different types of connections, so that it can be fitted to a broader range of machine tools.