Cincinnati is the name of a company that makes Metal Machinging Equiptment
Broaching is used to remove metal in a workpiece.
A Broaching tool consists of a series of cutting teeth, like a saw, except that each tooth is progressively larger than its predecessor. As the tapered tool passes the workpiece, each tooth removes slightly more material until, at the large end of the taper, the process is complete.
Broaching is a rapid process;it is also reliable, accurate and repeatable, making it the preferred alternative to conventional machining operations such as milling, grinding and reaming.
Broaching is ideal for high volume production wherever complex shapes are needed, such as internal splines and gears for the automotive industry or christmas tree root forms on aircraft engine turbine discs and blades.