What is Broaching? - Definition, Types, and Applications

Broaching is a machining process that uses a toothed tool, called a broach, to remove material from a workpiece. The broach is typically rotated in a linear motion to cut the material, creating a keyway or other feature on the part. Broaching can be used to create a variety of features, including splines, keys, and threads.
Broaching is commonly used in the production of gears, shafts, and other components that require precise tolerances and smooth finishes. It is often used as a finishing operation after other machining processes have been completed.
There are several types of broaching, including:
1. External broaching: This process uses a broach to cut material on the outside surface of a workpiece.
2. Internal broaching: This process uses a broach to cut material on the inside surface of a workpiece.
3. Spline broaching: This process uses a specialized broach to cut splines, which are teeth that are cut into a shaft or other rotating component.
4. Keyway broaching: This process uses a broach to cut a keyway, which is a groove or channel in a workpiece that is used to receive a pin or other component.
Broaching can be performed using a variety of tools and techniques, including manual, automatic, and CNC (computer numerical control) machines. The specific technique used will depend on the size and complexity of the part being broached, as well as the desired tolerances and finish.