Broaching machines are relatively simple as they only have to move the broach in a linear motion at a predetermined speed and provide a means for handling the broach automatically.

A broaching machine is a specialty machine designed for machining, or finishing, the surface of metal parts. It consists of a work table or some other fixture to hold the part in place, a broaching tool and a drive mechanism.

It has cutting teeth arranged in one or more rows, according to Encyclopaedia Brittanica. A broaching machine is typically used to finish metal surfaces in commercial industries.

A typical broaching machine works by keeping the metal piece stationary and cutting its edge while rotating around it, according to Global Spec. Broaching machines work quickly. A job usually takes only seconds.

Parts of a Broaching Machine

• Work Table

  The work table, or fixture, serves to tilt and hold the part in place for broaching. The center of the part and the center of the broaching tool are typically aligned with an offset of 1 degree, which creates a scalloping effect on the metal surface.

• Broaching Tool

  A broaching tool is a cutting tool with graduated cutting teeth arranged in a row. Each of the cutting teeth removes only a fraction of an inch from the surface of the metal, but, as the teeth become progressively higher, more and more metal is removed.

• Drive Mechanism

  The drive mechanism of a broaching machine is typically hydraulic or electromechanical. In either case, its purpose is to push or pull the broaching tool across the surface of the part. The part, itself, remains stationary.

• Types

  Broaching machines are either horizontal or vertical, according to Equipment MLS. Horizontal units are easily adjustable, and the user can readily reach any of its parts. Vertical machines save room and last longer.

• Applications

  Broaching machines are common tools in the electrical, automotive and aerospace industries. They must meet industry specifications. Manufacturers use them to make metal stampings, for forging and casting processes and to make machine parts.