Broaching is classified in two wide categories:
1. Internal broaching
2. Surface broaching 1. Internal Broaching Internal broaching means make a hole of every preferred shape in workpiece already have a round hole. Such as: Making splines, keyway and square holes. 2. Surface Broaching In surface broaching, external surfaces on workpieces are generating. Surface broaching machines not just produce flat surfaces but various other ruled surfaces with those of difficult contours. Examples consist of the outside surfaces of major bearings of engine cylinder blocks, major bearing caps, connecting rods, and so on.